Merge pull request #8297 from iterion/switch-to-aws-sdk-go

Godeps/Godeps.json

 {
 	"ImportPath": "github.com/GoogleCloudPlatform/kubernetes",
-	"GoVersion": "go1.4.2",
+	"GoVersion": "go1.3.3",
 	"Packages": [
 		"./..."
 	],
@@ -49,6 +49,34 @@
 			"Rev": "87808a37061a4a2e6204ccea5fd2fc930576db94"
 		},
 		{
+			"ImportPath": "github.com/awslabs/aws-sdk-go/aws",
+			"Rev": "c0a38f106248742920a2b786dcae81457af003d3"
+		},
+		{
+			"ImportPath": "github.com/awslabs/aws-sdk-go/internal/endpoints",
+			"Rev": "c0a38f106248742920a2b786dcae81457af003d3"
+		},
+		{
+			"ImportPath": "github.com/awslabs/aws-sdk-go/internal/protocol/ec2query",
+			"Rev": "c0a38f106248742920a2b786dcae81457af003d3"
+		},
+		{
+			"ImportPath": "github.com/awslabs/aws-sdk-go/internal/protocol/query/queryutil",
+			"Rev": "c0a38f106248742920a2b786dcae81457af003d3"
+		},
+		{
+			"ImportPath": "github.com/awslabs/aws-sdk-go/internal/protocol/xml/xmlutil",
+			"Rev": "c0a38f106248742920a2b786dcae81457af003d3"
+		},
+		{
+			"ImportPath": "github.com/awslabs/aws-sdk-go/internal/signer/v4",
+			"Rev": "c0a38f106248742920a2b786dcae81457af003d3"
+		},
+		{
+			"ImportPath": "github.com/awslabs/aws-sdk-go/service/ec2",
+			"Rev": "c0a38f106248742920a2b786dcae81457af003d3"
+		},
+		{
 			"ImportPath": "github.com/beorn7/perks/quantile",
 			"Rev": "b965b613227fddccbfffe13eae360ed3fa822f8d"
 		},
@@ -358,14 +386,6 @@
 			"Rev": "3f504e8dabd5d562e997d19ce0200aa41973e1b2"
 		},
 		{
-			"ImportPath": "github.com/mitchellh/goamz/aws",
-			"Rev": "703cfb45985762869e465f37ed030ff01615ff1e"
-		},
-		{
-			"ImportPath": "github.com/mitchellh/goamz/ec2",
-			"Rev": "703cfb45985762869e465f37ed030ff01615ff1e"
-		},
-		{
 			"ImportPath": "github.com/mitchellh/mapstructure",
 			"Rev": "740c764bc6149d3f1806231418adb9f52c11bcbf"
 		},

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/awsutil/copy.go

+package awsutil
+
+import (
+	"io"
+	"reflect"
+)
+
+// Copy deeply copies a src structure to dst. Useful for copying request and
+// response structures.
+func Copy(dst, src interface{}) {
+	rcopy(reflect.ValueOf(dst), reflect.ValueOf(src))
+}
+
+// CopyOf returns a copy of src while also allocating the memory for dst.
+// src must be a pointer type or this operation will fail.
+func CopyOf(src interface{}) (dst interface{}) {
+	dsti := reflect.New(reflect.TypeOf(src).Elem())
+	dst = dsti.Interface()
+	rcopy(dsti, reflect.ValueOf(src))
+	return
+}
+
+// rcopy performs a recursive copy of values from the source to destination.
+func rcopy(dst, src reflect.Value) {
+	if !src.IsValid() {
+		return
+	}
+
+	switch src.Kind() {
+	case reflect.Ptr:
+		if _, ok := src.Interface().(io.Reader); ok {
+			if dst.Kind() == reflect.Ptr && dst.Elem().CanSet() {
+				dst.Elem().Set(src)
+			} else if dst.CanSet() {
+				dst.Set(src)
+			}
+		} else {
+			e := src.Type().Elem()
+			if dst.CanSet() {
+				dst.Set(reflect.New(e))
+			}
+			if src.Elem().IsValid() {
+				rcopy(dst.Elem(), src.Elem())
+			}
+		}
+	case reflect.Struct:
+		dst.Set(reflect.New(src.Type()).Elem())
+		for i := 0; i < src.NumField(); i++ {
+			rcopy(dst.Field(i), src.Field(i))
+		}
+	case reflect.Slice:
+		s := reflect.MakeSlice(src.Type(), src.Len(), src.Cap())
+		dst.Set(s)
+		for i := 0; i < src.Len(); i++ {
+			rcopy(dst.Index(i), src.Index(i))
+		}
+	case reflect.Map:
+		s := reflect.MakeMap(src.Type())
+		dst.Set(s)
+		for _, k := range src.MapKeys() {
+			v := src.MapIndex(k)
+			v2 := reflect.New(v.Type()).Elem()
+			rcopy(v2, v)
+			dst.SetMapIndex(k, v2)
+		}
+	default:
+		dst.Set(src)
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/awsutil/copy_test.go

+package awsutil_test
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"testing"
+
+	"github.com/awslabs/aws-sdk-go/aws/awsutil"
+	"github.com/stretchr/testify/assert"
+)
+
+func ExampleCopy() {
+	type Foo struct {
+		A int
+		B []*string
+	}
+
+	// Create the initial value
+	str1 := "hello"
+	str2 := "bye bye"
+	f1 := &Foo{A: 1, B: []*string{&str1, &str2}}
+
+	// Do the copy
+	var f2 Foo
+	awsutil.Copy(&f2, f1)
+
+	// Print the result
+	fmt.Println(awsutil.StringValue(f2))
+
+	// Output:
+	// {
+	//   A: 1,
+	//   B: ["hello","bye bye"]
+	// }
+}
+
+func TestCopy(t *testing.T) {
+	type Foo struct {
+		A int
+		B []*string
+		C map[string]*int
+	}
+
+	// Create the initial value
+	str1 := "hello"
+	str2 := "bye bye"
+	int1 := 1
+	int2 := 2
+	f1 := &Foo{
+		A: 1,
+		B: []*string{&str1, &str2},
+		C: map[string]*int{
+			"A": &int1,
+			"B": &int2,
+		},
+	}
+
+	// Do the copy
+	var f2 Foo
+	awsutil.Copy(&f2, f1)
+
+	// Values are equal
+	assert.Equal(t, f2.A, f1.A)
+	assert.Equal(t, f2.B, f1.B)
+	assert.Equal(t, f2.C, f1.C)
+
+	// But pointers are not!
+	str3 := "nothello"
+	int3 := 57
+	f2.A = 100
+	f2.B[0] = &str3
+	f2.C["B"] = &int3
+	assert.NotEqual(t, f2.A, f1.A)
+	assert.NotEqual(t, f2.B, f1.B)
+	assert.NotEqual(t, f2.C, f1.C)
+}
+
+func TestCopyPrimitive(t *testing.T) {
+	str := "hello"
+	var s string
+	awsutil.Copy(&s, &str)
+	assert.Equal(t, "hello", s)
+}
+
+func TestCopyNil(t *testing.T) {
+	var s string
+	awsutil.Copy(&s, nil)
+	assert.Equal(t, "", s)
+}
+
+func TestCopyReader(t *testing.T) {
+	var buf io.Reader = bytes.NewReader([]byte("hello world"))
+	var r io.Reader
+	awsutil.Copy(&r, buf)
+	b, err := ioutil.ReadAll(r)
+	assert.NoError(t, err)
+	assert.Equal(t, []byte("hello world"), b)
+
+	// empty bytes because this is not a deep copy
+	b, err = ioutil.ReadAll(buf)
+	assert.NoError(t, err)
+	assert.Equal(t, []byte(""), b)
+}
+
+func ExampleCopyOf() {
+	type Foo struct {
+		A int
+		B []*string
+	}
+
+	// Create the initial value
+	str1 := "hello"
+	str2 := "bye bye"
+	f1 := &Foo{A: 1, B: []*string{&str1, &str2}}
+
+	// Do the copy
+	v := awsutil.CopyOf(f1)
+	var f2 *Foo = v.(*Foo)
+
+	// Print the result
+	fmt.Println(awsutil.StringValue(f2))
+
+	// Output:
+	// {
+	//   A: 1,
+	//   B: ["hello","bye bye"]
+	// }
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/awsutil/path_value.go

+package awsutil
+
+import (
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var indexRe = regexp.MustCompile(`(.+)\[(-?\d+)?\]$`)
+
+// rValuesAtPath returns a slice of values found in value v. The values
+// in v are explored recursively so all nested values are collected.
+func rValuesAtPath(v interface{}, path string, create bool) []reflect.Value {
+	pathparts := strings.Split(path, "||")
+	if len(pathparts) > 1 {
+		for _, pathpart := range pathparts {
+			vals := rValuesAtPath(v, pathpart, create)
+			if vals != nil && len(vals) > 0 {
+				return vals
+			}
+		}
+		return nil
+	}
+
+	values := []reflect.Value{reflect.Indirect(reflect.ValueOf(v))}
+	components := strings.Split(path, ".")
+	for len(values) > 0 && len(components) > 0 {
+		var index *int64
+		var indexStar bool
+		c := strings.TrimSpace(components[0])
+		if c == "" { // no actual component, illegal syntax
+			return nil
+		} else if c != "*" && strings.ToLower(c[0:1]) == c[0:1] {
+			// TODO normalize case for user
+			return nil // don't support unexported fields
+		}
+
+		// parse this component
+		if m := indexRe.FindStringSubmatch(c); m != nil {
+			c = m[1]
+			if m[2] == "" {
+				index = nil
+				indexStar = true
+			} else {
+				i, _ := strconv.ParseInt(m[2], 10, 32)
+				index = &i
+				indexStar = false
+			}
+		}
+
+		nextvals := []reflect.Value{}
+		for _, value := range values {
+			// pull component name out of struct member
+			if value.Kind() != reflect.Struct {
+				continue
+			}
+
+			if c == "*" { // pull all members
+				for i := 0; i < value.NumField(); i++ {
+					if f := reflect.Indirect(value.Field(i)); f.IsValid() {
+						nextvals = append(nextvals, f)
+					}
+				}
+				continue
+			}
+
+			value = value.FieldByName(c)
+			if create && value.Kind() == reflect.Ptr && value.IsNil() {
+				value.Set(reflect.New(value.Type().Elem()))
+				value = value.Elem()
+			} else {
+				value = reflect.Indirect(value)
+			}
+
+			if value.IsValid() {
+				nextvals = append(nextvals, value)
+			}
+		}
+		values = nextvals
+
+		if indexStar || index != nil {
+			nextvals = []reflect.Value{}
+			for _, value := range values {
+				value := reflect.Indirect(value)
+				if value.Kind() != reflect.Slice {
+					continue
+				}
+
+				if indexStar { // grab all indices
+					for i := 0; i < value.Len(); i++ {
+						idx := reflect.Indirect(value.Index(i))
+						if idx.IsValid() {
+							nextvals = append(nextvals, idx)
+						}
+					}
+					continue
+				}
+
+				// pull out index
+				i := int(*index)
+				if i >= value.Len() { // check out of bounds
+					if create {
+						// TODO resize slice
+					} else {
+						continue
+					}
+				} else if i < 0 { // support negative indexing
+					i = value.Len() + i
+				}
+				value = reflect.Indirect(value.Index(i))
+
+				if value.IsValid() {
+					nextvals = append(nextvals, value)
+				}
+			}
+			values = nextvals
+		}
+
+		components = components[1:]
+	}
+	return values
+}
+
+// ValuesAtPath returns a list of objects at the lexical path inside of a structure
+func ValuesAtPath(i interface{}, path string) []interface{} {
+	if rvals := rValuesAtPath(i, path, false); rvals != nil {
+		vals := make([]interface{}, len(rvals))
+		for i, rval := range rvals {
+			vals[i] = rval.Interface()
+		}
+		return vals
+	}
+	return nil
+}
+
+// SetValueAtPath sets an object at the lexical path inside of a structure
+func SetValueAtPath(i interface{}, path string, v interface{}) {
+	if rvals := rValuesAtPath(i, path, true); rvals != nil {
+		for _, rval := range rvals {
+			rval.Set(reflect.ValueOf(v))
+		}
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/awsutil/path_value_test.go

+package awsutil_test
+
+import (
+	"testing"
+
+	"github.com/awslabs/aws-sdk-go/aws/awsutil"
+	"github.com/stretchr/testify/assert"
+)
+
+type Struct struct {
+	A []Struct
+	a []Struct
+	B *Struct
+	D *Struct
+	C string
+}
+
+var data = Struct{
+	A: []Struct{Struct{C: "value1"}, Struct{C: "value2"}, Struct{C: "value3"}},
+	a: []Struct{Struct{C: "value1"}, Struct{C: "value2"}, Struct{C: "value3"}},
+	B: &Struct{B: &Struct{C: "terminal"}, D: &Struct{C: "terminal2"}},
+	C: "initial",
+}
+
+func TestValueAtPathSuccess(t *testing.T) {
+	assert.Equal(t, []interface{}{"initial"}, awsutil.ValuesAtPath(data, "C"))
+	assert.Equal(t, []interface{}{"value1"}, awsutil.ValuesAtPath(data, "A[0].C"))
+	assert.Equal(t, []interface{}{"value2"}, awsutil.ValuesAtPath(data, "A[1].C"))
+	assert.Equal(t, []interface{}{"value3"}, awsutil.ValuesAtPath(data, "A[2].C"))
+	assert.Equal(t, []interface{}{"value3"}, awsutil.ValuesAtPath(data, "A[-1].C"))
+	assert.Equal(t, []interface{}{"value1", "value2", "value3"}, awsutil.ValuesAtPath(data, "A[].C"))
+	assert.Equal(t, []interface{}{"terminal"}, awsutil.ValuesAtPath(data, "B . B . C"))
+	assert.Equal(t, []interface{}{"terminal", "terminal2"}, awsutil.ValuesAtPath(data, "B.*.C"))
+	assert.Equal(t, []interface{}{"initial"}, awsutil.ValuesAtPath(data, "A.D.X || C"))
+}
+
+func TestValueAtPathFailure(t *testing.T) {
+	assert.Equal(t, []interface{}(nil), awsutil.ValuesAtPath(data, "C.x"))
+	assert.Equal(t, []interface{}(nil), awsutil.ValuesAtPath(data, ".x"))
+	assert.Equal(t, []interface{}{}, awsutil.ValuesAtPath(data, "X.Y.Z"))
+	assert.Equal(t, []interface{}{}, awsutil.ValuesAtPath(data, "A[100].C"))
+	assert.Equal(t, []interface{}{}, awsutil.ValuesAtPath(data, "A[3].C"))
+	assert.Equal(t, []interface{}{}, awsutil.ValuesAtPath(data, "B.B.C.Z"))
+	assert.Equal(t, []interface{}(nil), awsutil.ValuesAtPath(data, "a[-1].C"))
+	assert.Equal(t, []interface{}{}, awsutil.ValuesAtPath(nil, "A.B.C"))
+}
+
+func TestSetValueAtPathSuccess(t *testing.T) {
+	var s Struct
+	awsutil.SetValueAtPath(&s, "C", "test1")
+	awsutil.SetValueAtPath(&s, "B.B.C", "test2")
+	awsutil.SetValueAtPath(&s, "B.D.C", "test3")
+	assert.Equal(t, "test1", s.C)
+	assert.Equal(t, "test2", s.B.B.C)
+	assert.Equal(t, "test3", s.B.D.C)
+
+	awsutil.SetValueAtPath(&s, "B.*.C", "test0")
+	assert.Equal(t, "test0", s.B.B.C)
+	assert.Equal(t, "test0", s.B.D.C)
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/awsutil/string_value.go

+package awsutil
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"reflect"
+	"strings"
+)
+
+// StringValue returns the string representation of a value.
+func StringValue(i interface{}) string {
+	var buf bytes.Buffer
+	stringValue(reflect.ValueOf(i), 0, &buf)
+	return buf.String()
+}
+
+// stringValue will recursively walk value v to build a textual
+// representation of the value.
+func stringValue(v reflect.Value, indent int, buf *bytes.Buffer) {
+	for v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	switch v.Kind() {
+	case reflect.Struct:
+		strtype := v.Type().String()
+		if strtype == "time.Time" {
+			fmt.Fprintf(buf, "%s", v.Interface())
+			break
+		} else if strings.HasPrefix(strtype, "io.") {
+			buf.WriteString("<buffer>")
+			break
+		}
+
+		buf.WriteString("{\n")
+
+		names := []string{}
+		for i := 0; i < v.Type().NumField(); i++ {
+			name := v.Type().Field(i).Name
+			f := v.Field(i)
+			if name[0:1] == strings.ToLower(name[0:1]) {
+				continue // ignore unexported fields
+			}
+			if (f.Kind() == reflect.Ptr || f.Kind() == reflect.Slice) && f.IsNil() {
+				continue // ignore unset fields
+			}
+			names = append(names, name)
+		}
+
+		for i, n := range names {
+			val := v.FieldByName(n)
+			buf.WriteString(strings.Repeat(" ", indent+2))
+			buf.WriteString(n + ": ")
+			stringValue(val, indent+2, buf)
+
+			if i < len(names)-1 {
+				buf.WriteString(",\n")
+			}
+		}
+
+		buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")
+	case reflect.Slice:
+		nl, id, id2 := "", "", ""
+		if v.Len() > 3 {
+			nl, id, id2 = "\n", strings.Repeat(" ", indent), strings.Repeat(" ", indent+2)
+		}
+		buf.WriteString("[" + nl)
+		for i := 0; i < v.Len(); i++ {
+			buf.WriteString(id2)
+			stringValue(v.Index(i), indent+2, buf)
+
+			if i < v.Len()-1 {
+				buf.WriteString("," + nl)
+			}
+		}
+
+		buf.WriteString(nl + id + "]")
+	case reflect.Map:
+		buf.WriteString("{\n")
+
+		for i, k := range v.MapKeys() {
+			buf.WriteString(strings.Repeat(" ", indent+2))
+			buf.WriteString(k.String() + ": ")
+			stringValue(v.MapIndex(k), indent+2, buf)
+
+			if i < v.Len()-1 {
+				buf.WriteString(",\n")
+			}
+		}
+
+		buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")
+	default:
+		format := "%v"
+		switch v.Interface().(type) {
+		case string:
+			format = "%q"
+		case io.ReadSeeker, io.Reader:
+			format = "buffer(%p)"
+		}
+		fmt.Fprintf(buf, format, v.Interface())
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/config.go

+package aws
+
+import (
+	"io"
+	"net/http"
+	"os"
+
+	"github.com/awslabs/aws-sdk-go/aws/credentials"
+)
+
+// DefaultChainCredentials is a Credentials which will find the first available
+// credentials Value from the list of Providers.
+//
+// This should be used in the default case. Once the type of credentials are
+// known switching to the specific Credentials will be more efficient.
+var DefaultChainCredentials = credentials.NewChainCredentials(
+	[]credentials.Provider{
+		&credentials.EnvProvider{},
+		&credentials.SharedCredentialsProvider{Filename: "", Profile: ""},
+		&credentials.EC2RoleProvider{},
+	})
+
+// The default number of retries for a service. The value of -1 indicates that
+// the service specific retry default will be used.
+const DefaultRetries = -1
+
+// DefaultConfig is the default all service configuration will be based off of.
+var DefaultConfig = &Config{
+	Credentials:             DefaultChainCredentials,
+	Endpoint:                "",
+	Region:                  os.Getenv("AWS_REGION"),
+	DisableSSL:              false,
+	ManualSend:              false,
+	HTTPClient:              http.DefaultClient,
+	LogHTTPBody:             false,
+	LogLevel:                0,
+	Logger:                  os.Stdout,
+	MaxRetries:              DefaultRetries,
+	DisableParamValidation:  false,
+	DisableComputeChecksums: false,
+	S3ForcePathStyle:        false,
+}
+
+// A Config provides service configuration
+type Config struct {
+	Credentials             *credentials.Credentials
+	Endpoint                string
+	Region                  string
+	DisableSSL              bool
+	ManualSend              bool
+	HTTPClient              *http.Client
+	LogHTTPBody             bool
+	LogLevel                uint
+	Logger                  io.Writer
+	MaxRetries              int
+	DisableParamValidation  bool
+	DisableComputeChecksums bool
+	S3ForcePathStyle        bool
+}
+
+// Copy will return a shallow copy of the Config object.
+func (c Config) Copy() Config {
+	dst := Config{}
+	dst.Credentials = c.Credentials
+	dst.Endpoint = c.Endpoint
+	dst.Region = c.Region
+	dst.DisableSSL = c.DisableSSL
+	dst.ManualSend = c.ManualSend
+	dst.HTTPClient = c.HTTPClient
+	dst.LogLevel = c.LogLevel
+	dst.Logger = c.Logger
+	dst.MaxRetries = c.MaxRetries
+	dst.DisableParamValidation = c.DisableParamValidation
+	dst.DisableComputeChecksums = c.DisableComputeChecksums
+	dst.S3ForcePathStyle = c.S3ForcePathStyle
+
+	return dst
+}
+
+// Merge merges the newcfg attribute values into this Config. Each attribute
+// will be merged into this config if the newcfg attribute's value is non-zero.
+// Due to this, newcfg attributes with zero values cannot be merged in. For
+// example bool attributes cannot be cleared using Merge, and must be explicitly
+// set on the Config structure.
+func (c Config) Merge(newcfg *Config) *Config {
+	cfg := Config{}
+
+	if newcfg != nil && newcfg.Credentials != nil {
+		cfg.Credentials = newcfg.Credentials
+	} else {
+		cfg.Credentials = c.Credentials
+	}
+
+	if newcfg != nil && newcfg.Endpoint != "" {
+		cfg.Endpoint = newcfg.Endpoint
+	} else {
+		cfg.Endpoint = c.Endpoint
+	}
+
+	if newcfg != nil && newcfg.Region != "" {
+		cfg.Region = newcfg.Region
+	} else {
+		cfg.Region = c.Region
+	}
+
+	if newcfg != nil && newcfg.DisableSSL {
+		cfg.DisableSSL = newcfg.DisableSSL
+	} else {
+		cfg.DisableSSL = c.DisableSSL
+	}
+
+	if newcfg != nil && newcfg.ManualSend {
+		cfg.ManualSend = newcfg.ManualSend
+	} else {
+		cfg.ManualSend = c.ManualSend
+	}
+
+	if newcfg != nil && newcfg.HTTPClient != nil {
+		cfg.HTTPClient = newcfg.HTTPClient
+	} else {
+		cfg.HTTPClient = c.HTTPClient
+	}
+
+	if newcfg != nil && newcfg.LogHTTPBody {
+		cfg.LogHTTPBody = newcfg.LogHTTPBody
+	} else {
+		cfg.LogHTTPBody = c.LogHTTPBody
+	}
+
+	if newcfg != nil && newcfg.LogLevel != 0 {
+		cfg.LogLevel = newcfg.LogLevel
+	} else {
+		cfg.LogLevel = c.LogLevel
+	}
+
+	if newcfg != nil && newcfg.Logger != nil {
+		cfg.Logger = newcfg.Logger
+	} else {
+		cfg.Logger = c.Logger
+	}
+
+	if newcfg != nil && newcfg.MaxRetries != DefaultRetries {
+		cfg.MaxRetries = newcfg.MaxRetries
+	} else {
+		cfg.MaxRetries = c.MaxRetries
+	}
+
+	if newcfg != nil && newcfg.DisableParamValidation {
+		cfg.DisableParamValidation = newcfg.DisableParamValidation
+	} else {
+		cfg.DisableParamValidation = c.DisableParamValidation
+	}
+
+	if newcfg != nil && newcfg.DisableComputeChecksums {
+		cfg.DisableComputeChecksums = newcfg.DisableComputeChecksums
+	} else {
+		cfg.DisableComputeChecksums = c.DisableComputeChecksums
+	}
+
+	if newcfg != nil && newcfg.S3ForcePathStyle {
+		cfg.S3ForcePathStyle = newcfg.S3ForcePathStyle
+	} else {
+		cfg.S3ForcePathStyle = c.S3ForcePathStyle
+	}
+
+	return &cfg
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/chain_provider.go

+package credentials
+
+import (
+	"fmt"
+)
+
+var (
+	// ErrNoValidProvidersFoundInChain Is returned when there are no valid
+	// providers in the ChainProvider.
+	ErrNoValidProvidersFoundInChain = fmt.Errorf("no valid providers in chain")
+)
+
+// A ChainProvider will search for a provider which returns credentials
+// and cache that provider until Retrieve is called again.
+//
+// The ChainProvider provides a way of chaining multiple providers together
+// which will pick the first available using priority order of the Providers
+// in the list.
+//
+// If none of the Providers retrieve valid credentials Value, ChainProvider's
+// Retrieve() will return the error ErrNoValidProvidersFoundInChain.
+//
+// If a Provider is found which returns valid credentials Value ChainProvider
+// will cache that Provider for all calls to IsExpired(), until Retrieve is
+// called again.
+//
+// Example of ChainProvider to be used with an EnvProvider and EC2RoleProvider.
+// In this example EnvProvider will first check if any credentials are available
+// vai the environment variables. If there are none ChainProvider will check
+// the next Provider in the list, EC2RoleProvider in this case. If EC2RoleProvider
+// does not return any credentials ChainProvider will return the error
+// ErrNoValidProvidersFoundInChain
+//
+//     creds := NewChainCredentials(
+//         []Provider{
+//             &EnvProvider{},
+//             &EC2RoleProvider{},
+//         })
+//     creds.Retrieve()
+//
+type ChainProvider struct {
+	Providers []Provider
+	curr      Provider
+}
+
+// NewChainCredentials returns a pointer to a new Credentials object
+// wrapping a chain of providers.
+func NewChainCredentials(providers []Provider) *Credentials {
+	return NewCredentials(&ChainProvider{
+		Providers: append([]Provider{}, providers...),
+	})
+}
+
+// Retrieve returns the credentials value or error if no provider returned
+// without error.
+//
+// If a provider is found it will be cached and any calls to IsExpired()
+// will return the expired state of the cached provider.
+func (c *ChainProvider) Retrieve() (Value, error) {
+	for _, p := range c.Providers {
+		if creds, err := p.Retrieve(); err == nil {
+			c.curr = p
+			return creds, nil
+		}
+	}
+	c.curr = nil
+
+	// TODO better error reporting. maybe report error for each failed retrieve?
+
+	return Value{}, ErrNoValidProvidersFoundInChain
+}
+
+// IsExpired will returned the expired state of the currently cached provider
+// if there is one.  If there is no current provider, true will be returned.
+func (c *ChainProvider) IsExpired() bool {
+	if c.curr != nil {
+		return c.curr.IsExpired()
+	}
+
+	return true
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/chain_provider_test.go

+package credentials
+
+import (
+	"errors"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestChainProviderGet(t *testing.T) {
+	p := &ChainProvider{
+		Providers: []Provider{
+			&stubProvider{err: errors.New("first provider error")},
+			&stubProvider{err: errors.New("second provider error")},
+			&stubProvider{
+				creds: Value{
+					AccessKeyID:     "AKID",
+					SecretAccessKey: "SECRET",
+					SessionToken:    "",
+				},
+			},
+		},
+	}
+
+	creds, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+	assert.Equal(t, "AKID", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "SECRET", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Empty(t, creds.SessionToken, "Expect session token to be empty")
+}
+
+func TestChainProviderIsExpired(t *testing.T) {
+	stubProvider := &stubProvider{expired: true}
+	p := &ChainProvider{
+		Providers: []Provider{
+			stubProvider,
+		},
+	}
+
+	assert.True(t, p.IsExpired(), "Expect expired to be true before any Retrieve")
+	_, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+	assert.False(t, p.IsExpired(), "Expect not expired after retrieve")
+
+	stubProvider.expired = true
+	assert.True(t, p.IsExpired(), "Expect return of expired provider")
+
+	_, err = p.Retrieve()
+	assert.False(t, p.IsExpired(), "Expect not expired after retrieve")
+}
+
+func TestChainProviderWithNoProvider(t *testing.T) {
+	p := &ChainProvider{
+		Providers: []Provider{},
+	}
+
+	assert.True(t, p.IsExpired(), "Expect expired with no providers")
+	_, err := p.Retrieve()
+	assert.Equal(t, ErrNoValidProvidersFoundInChain, err, "Expect no providers error returned")
+}
+
+func TestChainProviderWithNoValidProvider(t *testing.T) {
+	p := &ChainProvider{
+		Providers: []Provider{
+			&stubProvider{err: errors.New("first provider error")},
+			&stubProvider{err: errors.New("second provider error")},
+		},
+	}
+
+	assert.True(t, p.IsExpired(), "Expect expired with no providers")
+	_, err := p.Retrieve()
+	assert.Contains(t, "no valid providers in chain", err.Error(), "Expect no providers error returned")
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/credentials.go

+// Package credentials provides credential retrieval and management
+//
+// The Credentials is the primary method of getting access to and managing
+// credentials Values. Using dependency injection retrieval of the credential
+// values is handled by a object which satisfies the Provider interface.
+//
+// By default the Credentials.Get() will cache the successful result of a
+// Provider's Retrieve() until Provider.IsExpired() returns true. At which
+// point Credentials will call Provider's Retrieve() to get new credential Value.
+//
+// The Provider is responsible for determining when credentials Value have expired.
+// It is also important to note that Credentials will always call Retrieve the
+// first time Credentials.Get() is called.
+//
+// Example of using the environment variable credentials.
+//
+//     creds := NewEnvCredentials()
+//
+//     // Retrieve the credentials value
+//     credValue, err := creds.Get()
+//     if err != nil {
+//         // handle error
+//     }
+//
+// Example of forcing credentials to expire and be refreshed on the next Get().
+// This may be helpful to proactively expire credentials and refresh them sooner
+// than they would naturally expire on their own.
+//
+//     creds := NewCredentials(&EC2RoleProvider{})
+//     creds.Expire()
+//     credsValue, err := creds.Get()
+//     // New credentials will be retrieved instead of from cache.
+//
+//
+// Custom Provider
+//
+// Each Provider built into this package also provides a helper method to generate
+// a Credentials pointer setup with the provider. To use a custom Provider just
+// create a type which satisfies the Provider interface and pass it to the
+// NewCredentials method.
+//
+//     type MyProvider struct{}
+//     func (m *MyProvider) Retrieve() (Value, error) {...}
+//     func (m *MyProvider) IsExpired() bool {...}
+//
+//     creds := NewCredentials(&MyProvider{})
+//     credValue, err := creds.Get()
+//
+package credentials
+
+import (
+	"sync"
+	"time"
+)
+
+// Create an empty Credential object that can be used as dummy placeholder
+// credentials for requests that do not need signed.
+//
+// This Credentials can be used to configure a service to not sign requests
+// when making service API calls. For example, when accessing public
+// s3 buckets.
+//
+//     svc := s3.New(&aws.Config{Credentials: AnonymousCredentials})
+//     // Access public S3 buckets.
+//
+var AnonymousCredentials = NewStaticCredentials("", "", "")
+
+// A Value is the AWS credentials value for individual credential fields.
+type Value struct {
+	// AWS Access key ID
+	AccessKeyID string
+
+	// AWS Secret Access Key
+	SecretAccessKey string
+
+	// AWS Session Token
+	SessionToken string
+}
+
+// A Provider is the interface for any component which will provide credentials
+// Value. A provider is required to manage its own Expired state, and what to
+// be expired means.
+//
+// The Provider should not need to implement its own mutexes, because
+// that will be managed by Credentials.
+type Provider interface {
+	// Refresh returns nil if it successfully retrieved the value.
+	// Error is returned if the value were not obtainable, or empty.
+	Retrieve() (Value, error)
+
+	// IsExpired returns if the credentials are no longer valid, and need
+	// to be retrieved.
+	IsExpired() bool
+}
+
+// A Credentials provides synchronous safe retrieval of AWS credentials Value.
+// Credentials will cache the credentials value until they expire. Once the value
+// expires the next Get will attempt to retrieve valid credentials.
+//
+// Credentials is safe to use across multiple goroutines and will manage the
+// synchronous state so the Providers do not need to implement their own
+// synchronization.
+//
+// The first Credentials.Get() will always call Provider.Retrieve() to get the
+// first instance of the credentials Value. All calls to Get() after that
+// will return the cached credentials Value until IsExpired() returns true.
+type Credentials struct {
+	creds        Value
+	forceRefresh bool
+	m            sync.Mutex
+
+	provider Provider
+}
+
+// NewCredentials returns a pointer to a new Credentials with the provider set.
+func NewCredentials(provider Provider) *Credentials {
+	return &Credentials{
+		provider:     provider,
+		forceRefresh: true,
+	}
+}
+
+// Get returns the credentials value, or error if the credentials Value failed
+// to be retrieved.
+//
+// Will return the cached credentials Value if it has not expired. If the
+// credentials Value has expired the Provider's Retrieve() will be called
+// to refresh the credentials.
+//
+// If Credentials.Expire() was called the credentials Value will be force
+// expired, and the next call to Get() will cause them to be refreshed.
+func (c *Credentials) Get() (Value, error) {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	if c.isExpired() {
+		creds, err := c.provider.Retrieve()
+		if err != nil {
+			return Value{}, err
+		}
+		c.creds = creds
+		c.forceRefresh = false
+	}
+
+	return c.creds, nil
+}
+
+// Expire expires the credentials and forces them to be retrieved on the
+// next call to Get().
+//
+// This will override the Provider's expired state, and force Credentials
+// to call the Provider's Retrieve().
+func (c *Credentials) Expire() {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	c.forceRefresh = true
+}
+
+// IsExpired returns if the credentials are no longer valid, and need
+// to be retrieved.
+//
+// If the Credentials were forced to be expired with Expire() this will
+// reflect that override.
+func (c *Credentials) IsExpired() bool {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	return c.isExpired()
+}
+
+// isExpired helper method wrapping the definition of expired credentials.
+func (c *Credentials) isExpired() bool {
+	return c.forceRefresh || c.provider.IsExpired()
+}
+
+// Provide a stub-able time.Now for unit tests so expiry can be tested.
+var currentTime = time.Now

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/credentials_test.go

+package credentials
+
+import (
+	"errors"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+type stubProvider struct {
+	creds   Value
+	expired bool
+	err     error
+}
+
+func (s *stubProvider) Retrieve() (Value, error) {
+	s.expired = false
+	return s.creds, s.err
+}
+func (s *stubProvider) IsExpired() bool {
+	return s.expired
+}
+
+func TestCredentialsGet(t *testing.T) {
+	c := NewCredentials(&stubProvider{
+		creds: Value{
+			AccessKeyID:     "AKID",
+			SecretAccessKey: "SECRET",
+			SessionToken:    "",
+		},
+		expired: true,
+	})
+
+	creds, err := c.Get()
+	assert.Nil(t, err, "Expected no error")
+	assert.Equal(t, "AKID", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "SECRET", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Empty(t, creds.SessionToken, "Expect session token to be empty")
+}
+
+func TestCredentialsGetWithError(t *testing.T) {
+	c := NewCredentials(&stubProvider{err: errors.New("provider error"), expired: true})
+
+	_, err := c.Get()
+	assert.Equal(t, "provider error", err.Error(), "Expected provider error")
+}
+
+func TestCredentialsExpire(t *testing.T) {
+	stub := &stubProvider{}
+	c := NewCredentials(stub)
+
+	stub.expired = false
+	assert.True(t, c.IsExpired(), "Expected to start out expired")
+	c.Expire()
+	assert.True(t, c.IsExpired(), "Expected to be expired")
+
+	c.forceRefresh = false
+	assert.False(t, c.IsExpired(), "Expected not to be expired")
+
+	stub.expired = true
+	assert.True(t, c.IsExpired(), "Expected to be expired")
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/ec2_role_provider.go

+package credentials
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+const metadataCredentialsEndpoint = "http://169.254.169.254/latest/meta-data/iam/security-credentials/"
+
+// A EC2RoleProvider retrieves credentials from the EC2 service, and keeps track if
+// those credentials are expired.
+//
+// Example how to configure the EC2RoleProvider with custom http Client, Endpoint
+// or ExpiryWindow
+//
+//     p := &credentials.EC2RoleProvider{
+//         // Pass in a custom timeout to be used when requesting
+//         // IAM EC2 Role credentials.
+//         Client: &http.Client{
+//             Timeout: 10 * time.Second,
+//         },
+//         // Use default EC2 Role metadata endpoint, Alternate endpoints can be
+//         // specified setting Endpoint to something else.
+//         Endpoint: "",
+//         // Do not use early expiry of credentials. If a non zero value is
+//         // specified the credentials will be expired early
+//         ExpiryWindow: 0,
+//     }
+//
+type EC2RoleProvider struct {
+	// Endpoint must be fully quantified URL
+	Endpoint string
+
+	// HTTP client to use when connecting to EC2 service
+	Client *http.Client
+
+	// ExpiryWindow will allow the credentials to trigger refreshing prior to
+	// the credentials actually expiring. This is beneficial so race conditions
+	// with expiring credentials do not cause request to fail unexpectedly
+	// due to ExpiredTokenException exceptions.
+	//
+	// So a ExpiryWindow of 10s would cause calls to IsExpired() to return true
+	// 10 seconds before the credentials are actually expired.
+	//
+	// If ExpiryWindow is 0 or less it will be ignored.
+	ExpiryWindow time.Duration
+
+	// The date/time at which the credentials expire.
+	expiresOn time.Time
+}
+
+// NewEC2RoleCredentials returns a pointer to a new Credentials object
+// wrapping the EC2RoleProvider.
+//
+// Takes a custom http.Client which can be configured for custom handling of
+// things such as timeout.
+//
+// Endpoint is the URL that the EC2RoleProvider will connect to when retrieving
+// role and credentials.
+//
+// Window is the expiry window that will be subtracted from the expiry returned
+// by the role credential request. This is done so that the credentials will
+// expire sooner than their actual lifespan.
+func NewEC2RoleCredentials(client *http.Client, endpoint string, window time.Duration) *Credentials {
+	return NewCredentials(&EC2RoleProvider{
+		Endpoint:     endpoint,
+		Client:       client,
+		ExpiryWindow: window,
+	})
+}
+
+// Retrieve retrieves credentials from the EC2 service.
+// Error will be returned if the request fails, or unable to extract
+// the desired credentials.
+func (m *EC2RoleProvider) Retrieve() (Value, error) {
+	if m.Client == nil {
+		m.Client = http.DefaultClient
+	}
+	if m.Endpoint == "" {
+		m.Endpoint = metadataCredentialsEndpoint
+	}
+
+	credsList, err := requestCredList(m.Client, m.Endpoint)
+	if err != nil {
+		return Value{}, err
+	}
+
+	if len(credsList) == 0 {
+		return Value{}, fmt.Errorf("empty MetadataService credentials list")
+	}
+	credsName := credsList[0]
+
+	roleCreds, err := requestCred(m.Client, m.Endpoint, credsName)
+	if err != nil {
+		return Value{}, err
+	}
+
+	m.expiresOn = roleCreds.Expiration
+	if m.ExpiryWindow > 0 {
+		// Offset based on expiry window if set.
+		m.expiresOn = m.expiresOn.Add(-m.ExpiryWindow)
+	}
+
+	return Value{
+		AccessKeyID:     roleCreds.AccessKeyID,
+		SecretAccessKey: roleCreds.SecretAccessKey,
+		SessionToken:    roleCreds.Token,
+	}, nil
+}
+
+// IsExpired returns if the credentials are expired.
+func (m *EC2RoleProvider) IsExpired() bool {
+	return m.expiresOn.Before(currentTime())
+}
+
+// A ec2RoleCredRespBody provides the shape for deserializing credential
+// request responses.
+type ec2RoleCredRespBody struct {
+	Expiration      time.Time
+	AccessKeyID     string
+	SecretAccessKey string
+	Token           string
+}
+
+// requestCredList requests a list of credentials from the EC2 service.
+// If there are no credentials, or there is an error making or receiving the request
+func requestCredList(client *http.Client, endpoint string) ([]string, error) {
+	resp, err := client.Get(endpoint)
+	if err != nil {
+		return nil, fmt.Errorf("%s listing MetadataService credentials", err)
+	}
+	defer resp.Body.Close()
+
+	credsList := []string{}
+	s := bufio.NewScanner(resp.Body)
+	for s.Scan() {
+		credsList = append(credsList, s.Text())
+	}
+
+	if err := s.Err(); err != nil {
+		return nil, fmt.Errorf("%s reading list of MetadataService credentials", err)
+	}
+
+	return credsList, nil
+}
+
+// requestCred requests the credentials for a specific credentials from the EC2 service.
+//
+// If the credentials cannot be found, or there is an error reading the response
+// and error will be returned.
+func requestCred(client *http.Client, endpoint, credsName string) (*ec2RoleCredRespBody, error) {
+	resp, err := client.Get(endpoint + credsName)
+	if err != nil {
+		return nil, fmt.Errorf("getting %s MetadataService credentials", credsName)
+	}
+	defer resp.Body.Close()
+
+	respCreds := &ec2RoleCredRespBody{}
+	if err := json.NewDecoder(resp.Body).Decode(respCreds); err != nil {
+		return nil, fmt.Errorf("decoding %s MetadataService credentials", credsName)
+	}
+
+	return respCreds, nil
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/ec2_role_provider_test.go

+package credentials
+
+import (
+	"fmt"
+	"github.com/stretchr/testify/assert"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+)
+
+func initTestServer(expireOn string) *httptest.Server {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.RequestURI == "/" {
+			fmt.Fprintln(w, "/creds")
+		} else {
+			fmt.Fprintf(w, `{
+  "AccessKeyId" : "accessKey",
+  "SecretAccessKey" : "secret",
+  "Token" : "token",
+  "Expiration" : "%s"
+}`, expireOn)
+		}
+	}))
+
+	return server
+}
+
+func TestEC2RoleProvider(t *testing.T) {
+	server := initTestServer("2014-12-16T01:51:37Z")
+	defer server.Close()
+
+	p := &EC2RoleProvider{Client: http.DefaultClient, Endpoint: server.URL}
+
+	creds, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.Equal(t, "accessKey", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "secret", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Equal(t, "token", creds.SessionToken, "Expect session token to match")
+}
+
+func TestEC2RoleProviderIsExpired(t *testing.T) {
+	server := initTestServer("2014-12-16T01:51:37Z")
+	defer server.Close()
+
+	p := &EC2RoleProvider{Client: http.DefaultClient, Endpoint: server.URL}
+	defer func() {
+		currentTime = time.Now
+	}()
+	currentTime = func() time.Time {
+		return time.Date(2014, 12, 15, 21, 26, 0, 0, time.UTC)
+	}
+
+	assert.True(t, p.IsExpired(), "Expect creds to be expired before retrieve.")
+
+	_, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.False(t, p.IsExpired(), "Expect creds to not be expired after retrieve.")
+
+	currentTime = func() time.Time {
+		return time.Date(3014, 12, 15, 21, 26, 0, 0, time.UTC)
+	}
+
+	assert.True(t, p.IsExpired(), "Expect creds to be expired.")
+}
+
+func TestEC2RoleProviderExpiryWindowIsExpired(t *testing.T) {
+	server := initTestServer("2014-12-16T01:51:37Z")
+	defer server.Close()
+
+	p := &EC2RoleProvider{Client: http.DefaultClient, Endpoint: server.URL, ExpiryWindow: time.Hour * 1}
+	defer func() {
+		currentTime = time.Now
+	}()
+	currentTime = func() time.Time {
+		return time.Date(2014, 12, 15, 0, 51, 37, 0, time.UTC)
+	}
+
+	assert.True(t, p.IsExpired(), "Expect creds to be expired before retrieve.")
+
+	_, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.False(t, p.IsExpired(), "Expect creds to not be expired after retrieve.")
+
+	currentTime = func() time.Time {
+		return time.Date(2014, 12, 16, 0, 55, 37, 0, time.UTC)
+	}
+
+	assert.True(t, p.IsExpired(), "Expect creds to be expired.")
+}
+
+func BenchmarkEC2RoleProvider(b *testing.B) {
+	server := initTestServer("2014-12-16T01:51:37Z")
+	defer server.Close()
+
+	p := &EC2RoleProvider{Client: http.DefaultClient, Endpoint: server.URL}
+	_, err := p.Retrieve()
+	if err != nil {
+		b.Fatal(err)
+	}
+
+	b.ResetTimer()
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			_, err := p.Retrieve()
+			if err != nil {
+				b.Fatal(err)
+			}
+		}
+	})
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/env_provider.go

+package credentials
+
+import (
+	"fmt"
+	"os"
+)
+
+var (
+	// ErrAccessKeyIDNotFound is returned when the AWS Access Key ID can't be
+	// found in the process's environment.
+	ErrAccessKeyIDNotFound = fmt.Errorf("AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY not found in environment")
+	// ErrSecretAccessKeyNotFound is returned when the AWS Secret Access Key
+	// can't be found in the process's environment.
+	ErrSecretAccessKeyNotFound = fmt.Errorf("AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY not found in environment")
+)
+
+// A EnvProvider retrieves credentials from the environment variables of the
+// running process. Environment credentials never expire.
+//
+// Environment variables used:
+// - Access Key ID:     AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY
+// - Secret Access Key: AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY
+type EnvProvider struct {
+	retrieved bool
+}
+
+// NewEnvCredentials returns a pointer to a new Credentials object
+// wrapping the environment variable provider.
+func NewEnvCredentials() *Credentials {
+	return NewCredentials(&EnvProvider{})
+}
+
+// Retrieve retrieves the keys from the environment.
+func (e *EnvProvider) Retrieve() (Value, error) {
+	e.retrieved = false
+
+	id := os.Getenv("AWS_ACCESS_KEY_ID")
+	if id == "" {
+		id = os.Getenv("AWS_ACCESS_KEY")
+	}
+
+	secret := os.Getenv("AWS_SECRET_ACCESS_KEY")
+	if secret == "" {
+		secret = os.Getenv("AWS_SECRET_KEY")
+	}
+
+	if id == "" {
+		return Value{}, ErrAccessKeyIDNotFound
+	}
+
+	if secret == "" {
+		return Value{}, ErrSecretAccessKeyNotFound
+	}
+
+	e.retrieved = true
+	return Value{
+		AccessKeyID:     id,
+		SecretAccessKey: secret,
+		SessionToken:    os.Getenv("AWS_SESSION_TOKEN"),
+	}, nil
+}
+
+// IsExpired returns if the credentials have been retrieved.
+func (e *EnvProvider) IsExpired() bool {
+	return !e.retrieved
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/env_provider_test.go

+package credentials
+
+import (
+	"github.com/stretchr/testify/assert"
+	"os"
+	"testing"
+)
+
+func TestEnvProviderRetrieve(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("AWS_ACCESS_KEY_ID", "access")
+	os.Setenv("AWS_SECRET_ACCESS_KEY", "secret")
+	os.Setenv("AWS_SESSION_TOKEN", "token")
+
+	e := EnvProvider{}
+	creds, err := e.Retrieve()
+	assert.Nil(t, err, "Expect no error", err)
+
+	assert.Equal(t, "access", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "secret", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Equal(t, "token", creds.SessionToken, "Expect session token to match")
+}
+
+func TestEnvProviderIsExpired(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("AWS_ACCESS_KEY_ID", "access")
+	os.Setenv("AWS_SECRET_ACCESS_KEY", "secret")
+	os.Setenv("AWS_SESSION_TOKEN", "token")
+
+	e := EnvProvider{}
+
+	assert.True(t, e.IsExpired(), "Expect creds to be expired before retrieve.")
+
+	_, err := e.Retrieve()
+	assert.Nil(t, err, "Expect no error", err)
+
+	assert.False(t, e.IsExpired(), "Expect creds to not be expired after retrieve.")
+}
+
+func TestEnvProviderNoAccessKeyID(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("AWS_SECRET_ACCESS_KEY", "secret")
+
+	e := EnvProvider{}
+	creds, err := e.Retrieve()
+	assert.Equal(t, ErrAccessKeyIDNotFound, err, "ErrAccessKeyIDNotFound expected, but was %#v error: %#v", creds, err)
+}
+
+func TestEnvProviderNoSecretAccessKey(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("AWS_ACCESS_KEY_ID", "access")
+
+	e := EnvProvider{}
+	creds, err := e.Retrieve()
+	assert.Equal(t, ErrSecretAccessKeyNotFound, err, "ErrSecretAccessKeyNotFound expected, but was %#v error: %#v", creds, err)
+}
+
+func TestEnvProviderAlternateNames(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("AWS_ACCESS_KEY", "access")
+	os.Setenv("AWS_SECRET_KEY", "secret")
+
+	e := EnvProvider{}
+	creds, err := e.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.Equal(t, "access", creds.AccessKeyID, "Expected access key ID")
+	assert.Equal(t, "secret", creds.SecretAccessKey, "Expected secret access key")
+	assert.Empty(t, creds.SessionToken, "Expected no token")
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/example.ini

+[default]
+aws_access_key_id = accessKey
+aws_secret_access_key = secret
+aws_session_token = token
+
+[no_token]
+aws_access_key_id = accessKey
+aws_secret_access_key = secret

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/shared_credentials_provider.go

+package credentials
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/vaughan0/go-ini"
+)
+
+var (
+	// ErrSharedCredentialsHomeNotFound is emitted when the user directory cannot be found.
+	ErrSharedCredentialsHomeNotFound = fmt.Errorf("User home directory not found.")
+)
+
+// A SharedCredentialsProvider retrieves credentials from the current user's home
+// directory, and keeps track if those credentials are expired.
+//
+// Profile ini file example: $HOME/.aws/credentials
+type SharedCredentialsProvider struct {
+	// Path to the shared credentials file. If empty will default to current user's
+	// home directory.
+	Filename string
+
+	// AWS Profile to extract credentials from the shared credentials file. If empty
+	// will default to environment variable "AWS_PROFILE" or "default" if
+	// environment variable is also not set.
+	Profile string
+
+	// retrieved states if the credentials have been successfully retrieved.
+	retrieved bool
+}
+
+// NewSharedCredentials returns a pointer to a new Credentials object
+// wrapping the Profile file provider.
+func NewSharedCredentials(filename, profile string) *Credentials {
+	return NewCredentials(&SharedCredentialsProvider{
+		Filename: filename,
+		Profile:  profile,
+	})
+}
+
+// Retrieve reads and extracts the shared credentials from the current
+// users home directory.
+func (p *SharedCredentialsProvider) Retrieve() (Value, error) {
+	p.retrieved = false
+
+	filename, err := p.filename()
+	if err != nil {
+		return Value{}, err
+	}
+
+	creds, err := loadProfile(filename, p.profile())
+	if err != nil {
+		return Value{}, err
+	}
+
+	p.retrieved = true
+	return creds, nil
+}
+
+// IsExpired returns if the shared credentials have expired.
+func (p *SharedCredentialsProvider) IsExpired() bool {
+	return !p.retrieved
+}
+
+// loadProfiles loads from the file pointed to by shared credentials filename for profile.
+// The credentials retrieved from the profile will be returned or error. Error will be
+// returned if it fails to read from the file, or the data is invalid.
+func loadProfile(filename, profile string) (Value, error) {
+	config, err := ini.LoadFile(filename)
+	if err != nil {
+		return Value{}, err
+	}
+	iniProfile := config.Section(profile)
+
+	id, ok := iniProfile["aws_access_key_id"]
+	if !ok {
+		return Value{}, fmt.Errorf("shared credentials %s in %s did not contain aws_access_key_id", profile, filename)
+	}
+
+	secret, ok := iniProfile["aws_secret_access_key"]
+	if !ok {
+		return Value{}, fmt.Errorf("shared credentials %s in %s did not contain aws_secret_access_key", profile, filename)
+	}
+
+	token := iniProfile["aws_session_token"]
+
+	return Value{
+		AccessKeyID:     id,
+		SecretAccessKey: secret,
+		SessionToken:    token,
+	}, nil
+}
+
+// filename returns the filename to use to read AWS shared credentials.
+//
+// Will return an error if the user's home directory path cannot be found.
+func (p *SharedCredentialsProvider) filename() (string, error) {
+	if p.Filename == "" {
+		homeDir := os.Getenv("HOME") // *nix
+		if homeDir == "" {           // Windows
+			homeDir = os.Getenv("USERPROFILE")
+		}
+		if homeDir == "" {
+			return "", ErrSharedCredentialsHomeNotFound
+		}
+
+		p.Filename = filepath.Join(homeDir, ".aws", "credentials")
+	}
+
+	return p.Filename, nil
+}
+
+// profile returns the AWS shared credentials profile.  If empty will read
+// environment variable "AWS_PROFILE". If that is not set profile will
+// return "default".
+func (p *SharedCredentialsProvider) profile() string {
+	if p.Profile == "" {
+		p.Profile = os.Getenv("AWS_PROFILE")
+	}
+	if p.Profile == "" {
+		p.Profile = "default"
+	}
+
+	return p.Profile
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/shared_credentials_provider_test.go

+package credentials
+
+import (
+	"github.com/stretchr/testify/assert"
+	"os"
+	"testing"
+)
+
+func TestSharedCredentialsProvider(t *testing.T) {
+	os.Clearenv()
+
+	p := SharedCredentialsProvider{Filename: "example.ini", Profile: ""}
+	creds, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.Equal(t, "accessKey", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "secret", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Equal(t, "token", creds.SessionToken, "Expect session token to match")
+}
+
+func TestSharedCredentialsProviderIsExpired(t *testing.T) {
+	os.Clearenv()
+
+	p := SharedCredentialsProvider{Filename: "example.ini", Profile: ""}
+
+	assert.True(t, p.IsExpired(), "Expect creds to be expired before retrieve")
+
+	_, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.False(t, p.IsExpired(), "Expect creds to not be expired after retrieve")
+}
+
+func TestSharedCredentialsProviderWithAWS_PROFILE(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("AWS_PROFILE", "no_token")
+
+	p := SharedCredentialsProvider{Filename: "example.ini", Profile: ""}
+	creds, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.Equal(t, "accessKey", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "secret", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Empty(t, creds.SessionToken, "Expect no token")
+}
+
+func TestSharedCredentialsProviderWithoutTokenFromProfile(t *testing.T) {
+	os.Clearenv()
+
+	p := SharedCredentialsProvider{Filename: "example.ini", Profile: "no_token"}
+	creds, err := p.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+
+	assert.Equal(t, "accessKey", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "secret", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Empty(t, creds.SessionToken, "Expect no token")
+}
+
+func BenchmarkSharedCredentialsProvider(b *testing.B) {
+	os.Clearenv()
+
+	p := SharedCredentialsProvider{Filename: "example.ini", Profile: ""}
+	_, err := p.Retrieve()
+	if err != nil {
+		b.Fatal(err)
+	}
+
+	b.ResetTimer()
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			_, err := p.Retrieve()
+			if err != nil {
+				b.Fatal(err)
+			}
+		}
+	})
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/static_provider.go

+package credentials
+
+import (
+	"fmt"
+)
+
+var (
+	// ErrStaticCredentialsEmpty is emitted when static credentials are empty.
+	ErrStaticCredentialsEmpty = fmt.Errorf("static credentials are empty")
+)
+
+// A StaticProvider is a set of credentials which are set pragmatically,
+// and will never expire.
+type StaticProvider struct {
+	Value
+}
+
+// NewStaticCredentials returns a pointer to a new Credentials object
+// wrapping a static credentials value provider.
+func NewStaticCredentials(id, secret, token string) *Credentials {
+	return NewCredentials(&StaticProvider{Value: Value{
+		AccessKeyID:     id,
+		SecretAccessKey: secret,
+		SessionToken:    token,
+	}})
+}
+
+// Retrieve returns the credentials or error if the credentials are invalid.
+func (s *StaticProvider) Retrieve() (Value, error) {
+	if s.AccessKeyID == "" || s.SecretAccessKey == "" {
+		return Value{}, ErrStaticCredentialsEmpty
+	}
+
+	return s.Value, nil
+}
+
+// IsExpired returns if the credentials are expired.
+//
+// For StaticProvider, the credentials never expired.
+func (s *StaticProvider) IsExpired() bool {
+	return false
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/credentials/static_provider_test.go

+package credentials
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestStaticProviderGet(t *testing.T) {
+	s := StaticProvider{
+		Value: Value{
+			AccessKeyID:     "AKID",
+			SecretAccessKey: "SECRET",
+			SessionToken:    "",
+		},
+	}
+
+	creds, err := s.Retrieve()
+	assert.Nil(t, err, "Expect no error")
+	assert.Equal(t, "AKID", creds.AccessKeyID, "Expect access key ID to match")
+	assert.Equal(t, "SECRET", creds.SecretAccessKey, "Expect secret access key to match")
+	assert.Empty(t, creds.SessionToken, "Expect no session token")
+}
+
+func TestStaticProviderIsExpired(t *testing.T) {
+	s := StaticProvider{
+		Value: Value{
+			AccessKeyID:     "AKID",
+			SecretAccessKey: "SECRET",
+			SessionToken:    "",
+		},
+	}
+
+	assert.False(t, s.IsExpired(), "Expect static credentials to never expire")
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/error.go

+package aws
+
+// An APIError is an error returned by an AWS API.
+type APIError struct {
+	StatusCode int // HTTP status code e.g. 200
+	Code       string
+	Message    string
+	RequestID  string
+}
+
+// Error returns the error as a string. Satisfies error interface.
+func (e APIError) Error() string {
+	return e.Code + ": " + e.Message
+}
+
+// Error returns an APIError pointer if the error e is an APIError type.
+// If the error is not an APIError nil will be returned.
+func Error(e error) *APIError {
+	if err, ok := e.(*APIError); ok {
+		return err
+	} else if err, ok := e.(APIError); ok {
+		return &err
+	} else {
+		return nil
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/handler_functions.go

+package aws
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strconv"
+	"time"
+)
+
+var sleepDelay = func(delay time.Duration) {
+	time.Sleep(delay)
+}
+
+// Interface for matching types which also have a Len method.
+type lener interface {
+	Len() int
+}
+
+// BuildContentLength builds the content length of a request based on the body,
+// or will use the HTTPRequest.Header's "Content-Length" if defined. If unable
+// to determine request body length and no "Content-Length" was specified it will panic.
+func BuildContentLength(r *Request) {
+	if slength := r.HTTPRequest.Header.Get("Content-Length"); slength != "" {
+		length, _ := strconv.ParseInt(slength, 10, 64)
+		r.HTTPRequest.ContentLength = length
+		return
+	}
+
+	var length int64
+	switch body := r.Body.(type) {
+	case nil:
+		length = 0
+	case lener:
+		length = int64(body.Len())
+	case io.Seeker:
+		r.bodyStart, _ = body.Seek(0, 1)
+		end, _ := body.Seek(0, 2)
+		body.Seek(r.bodyStart, 0) // make sure to seek back to original location
+		length = end - r.bodyStart
+	default:
+		panic("Cannot get length of body, must provide `ContentLength`")
+	}
+
+	r.HTTPRequest.ContentLength = length
+	r.HTTPRequest.Header.Set("Content-Length", fmt.Sprintf("%d", length))
+}
+
+// UserAgentHandler is a request handler for injecting User agent into requests.
+func UserAgentHandler(r *Request) {
+	r.HTTPRequest.Header.Set("User-Agent", SDKName+"/"+SDKVersion)
+}
+
+var reStatusCode = regexp.MustCompile(`^(\d+)`)
+
+// SendHandler is a request handler to send service request using HTTP client.
+func SendHandler(r *Request) {
+	r.HTTPResponse, r.Error = r.Service.Config.HTTPClient.Do(r.HTTPRequest)
+	if r.Error != nil {
+		if e, ok := r.Error.(*url.Error); ok {
+			if s := reStatusCode.FindStringSubmatch(e.Err.Error()); s != nil {
+				code, _ := strconv.ParseInt(s[1], 10, 64)
+				r.Error = nil
+				r.HTTPResponse = &http.Response{
+					StatusCode: int(code),
+					Status:     http.StatusText(int(code)),
+					Body:       ioutil.NopCloser(bytes.NewReader([]byte{})),
+				}
+			}
+		}
+	}
+}
+
+// ValidateResponseHandler is a request handler to validate service response.
+func ValidateResponseHandler(r *Request) {
+	if r.HTTPResponse.StatusCode == 0 || r.HTTPResponse.StatusCode >= 300 {
+		// this may be replaced by an UnmarshalError handler
+		r.Error = &APIError{
+			StatusCode: r.HTTPResponse.StatusCode,
+			Code:       "UnknownError",
+			Message:    "unknown error",
+		}
+	}
+}
+
+// AfterRetryHandler performs final checks to determine if the request should
+// be retried and how long to delay.
+func AfterRetryHandler(r *Request) {
+	// If one of the other handlers already set the retry state
+	// we don't want to override it based on the service's state
+	if !r.Retryable.IsSet() {
+		r.Retryable.Set(r.Service.ShouldRetry(r))
+	}
+
+	if r.WillRetry() {
+		r.RetryDelay = r.Service.RetryRules(r)
+		sleepDelay(r.RetryDelay)
+
+		// when the expired token exception occurs the credentials
+		// need to be expired locally so that the next request to
+		// get credentials will trigger a credentials refresh.
+		if err := Error(r.Error); err != nil && err.Code == "ExpiredTokenException" {
+			r.Config.Credentials.Expire()
+			// The credentials will need to be resigned with new credentials
+			r.signed = false
+		}
+
+		r.RetryCount++
+		r.Error = nil
+	}
+}
+
+var (
+	// ErrMissingRegion is an error that is returned if region configuration is
+	// not found.
+	ErrMissingRegion = fmt.Errorf("could not find region configuration")
+
+	// ErrMissingEndpoint is an error that is returned if an endpoint cannot be
+	// resolved for a service.
+	ErrMissingEndpoint = fmt.Errorf("`Endpoint' configuration is required for this service")
+)
+
+// ValidateEndpointHandler is a request handler to validate a request had the
+// appropriate Region and Endpoint set. Will set r.Error if the endpoint or
+// region is not valid.
+func ValidateEndpointHandler(r *Request) {
+	if r.Service.SigningRegion == "" && r.Service.Config.Region == "" {
+		r.Error = ErrMissingRegion
+	} else if r.Service.Endpoint == "" {
+		r.Error = ErrMissingEndpoint
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/handler_functions_test.go

+package aws
+
+import (
+	"net/http"
+	"os"
+	"testing"
+
+	"github.com/awslabs/aws-sdk-go/aws/credentials"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidateEndpointHandler(t *testing.T) {
+	os.Clearenv()
+	svc := NewService(&Config{Region: "us-west-2"})
+	svc.Handlers.Clear()
+	svc.Handlers.Validate.PushBack(ValidateEndpointHandler)
+
+	req := NewRequest(svc, &Operation{Name: "Operation"}, nil, nil)
+	err := req.Build()
+
+	assert.NoError(t, err)
+}
+
+func TestValidateEndpointHandlerErrorRegion(t *testing.T) {
+	os.Clearenv()
+	svc := NewService(nil)
+	svc.Handlers.Clear()
+	svc.Handlers.Validate.PushBack(ValidateEndpointHandler)
+
+	req := NewRequest(svc, &Operation{Name: "Operation"}, nil, nil)
+	err := req.Build()
+
+	assert.Error(t, err)
+	assert.Equal(t, ErrMissingRegion, err)
+}
+
+type mockCredsProvider struct {
+	expired        bool
+	retreiveCalled bool
+}
+
+func (m *mockCredsProvider) Retrieve() (credentials.Value, error) {
+	m.retreiveCalled = true
+	return credentials.Value{}, nil
+}
+
+func (m *mockCredsProvider) IsExpired() bool {
+	return m.expired
+}
+
+func TestAfterRetryRefreshCreds(t *testing.T) {
+	os.Clearenv()
+	credProvider := &mockCredsProvider{}
+	svc := NewService(&Config{Credentials: credentials.NewCredentials(credProvider), MaxRetries: 1})
+
+	svc.Handlers.Clear()
+	svc.Handlers.ValidateResponse.PushBack(func(r *Request) {
+		r.Error = &APIError{Code: "UnknownError"}
+		r.HTTPResponse = &http.Response{StatusCode: 400}
+	})
+	svc.Handlers.UnmarshalError.PushBack(func(r *Request) {
+		r.Error = &APIError{Code: "ExpiredTokenException"}
+	})
+	svc.Handlers.AfterRetry.PushBack(func(r *Request) {
+		AfterRetryHandler(r)
+	})
+
+	assert.True(t, svc.Config.Credentials.IsExpired(), "Expect to start out expired")
+	assert.False(t, credProvider.retreiveCalled)
+
+	req := NewRequest(svc, &Operation{Name: "Operation"}, nil, nil)
+	req.Send()
+
+	assert.True(t, svc.Config.Credentials.IsExpired())
+	assert.False(t, credProvider.retreiveCalled)
+
+	_, err := svc.Config.Credentials.Get()
+	assert.NoError(t, err)
+	assert.True(t, credProvider.retreiveCalled)
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/handlers.go

+package aws
+
+// A Handlers provides a collection of request handlers for various
+// stages of handling requests.
+type Handlers struct {
+	Validate         HandlerList
+	Build            HandlerList
+	Sign             HandlerList
+	Send             HandlerList
+	ValidateResponse HandlerList
+	Unmarshal        HandlerList
+	UnmarshalMeta    HandlerList
+	UnmarshalError   HandlerList
+	Retry            HandlerList
+	AfterRetry       HandlerList
+}
+
+// copy returns of this handler's lists.
+func (h *Handlers) copy() Handlers {
+	return Handlers{
+		Validate:         h.Validate.copy(),
+		Build:            h.Build.copy(),
+		Sign:             h.Sign.copy(),
+		Send:             h.Send.copy(),
+		ValidateResponse: h.ValidateResponse.copy(),
+		Unmarshal:        h.Unmarshal.copy(),
+		UnmarshalError:   h.UnmarshalError.copy(),
+		UnmarshalMeta:    h.UnmarshalMeta.copy(),
+		Retry:            h.Retry.copy(),
+		AfterRetry:       h.AfterRetry.copy(),
+	}
+}
+
+// Clear removes callback functions for all handlers
+func (h *Handlers) Clear() {
+	h.Validate.Clear()
+	h.Build.Clear()
+	h.Send.Clear()
+	h.Sign.Clear()
+	h.Unmarshal.Clear()
+	h.UnmarshalMeta.Clear()
+	h.UnmarshalError.Clear()
+	h.ValidateResponse.Clear()
+	h.Retry.Clear()
+	h.AfterRetry.Clear()
+}
+
+// A HandlerList manages zero or more handlers in a list.
+type HandlerList struct {
+	list []func(*Request)
+}
+
+// copy creates a copy of the handler list.
+func (l *HandlerList) copy() HandlerList {
+	var n HandlerList
+	n.list = append([]func(*Request){}, l.list...)
+	return n
+}
+
+// Clear clears the handler list.
+func (l *HandlerList) Clear() {
+	l.list = []func(*Request){}
+}
+
+// Len returns the number of handlers in the list.
+func (l *HandlerList) Len() int {
+	return len(l.list)
+}
+
+// PushBack pushes handlers f to the back of the handler list.
+func (l *HandlerList) PushBack(f ...func(*Request)) {
+	l.list = append(l.list, f...)
+}
+
+// PushFront pushes handlers f to the front of the handler list.
+func (l *HandlerList) PushFront(f ...func(*Request)) {
+	l.list = append(f, l.list...)
+}
+
+// Run executes all handlers in the list with a given request object.
+func (l *HandlerList) Run(r *Request) {
+	for _, f := range l.list {
+		f(r)
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/handlers_test.go

+package aws
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHandlerList(t *testing.T) {
+	s := ""
+	r := &Request{}
+	l := HandlerList{}
+	l.PushBack(func(r *Request) {
+		s += "a"
+		r.Data = s
+	})
+	l.Run(r)
+	assert.Equal(t, "a", s)
+	assert.Equal(t, "a", r.Data)
+}
+
+func TestMultipleHandlers(t *testing.T) {
+	r := &Request{}
+	l := HandlerList{}
+	l.PushBack(func(r *Request) { r.Data = nil })
+	l.PushFront(func(r *Request) { r.Data = Boolean(true) })
+	l.Run(r)
+	if r.Data != nil {
+		t.Error("Expected handler to execute")
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/param_validator.go

+package aws
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// ValidateParameters is a request handler to validate the input parameters.
+// Validating parameters only has meaning if done prior to the request being sent.
+func ValidateParameters(r *Request) {
+	if r.ParamsFilled() {
+		v := validator{errors: []string{}}
+		v.validateAny(reflect.ValueOf(r.Params), "")
+
+		if count := len(v.errors); count > 0 {
+			format := "%d validation errors:\n- %s"
+			msg := fmt.Sprintf(format, count, strings.Join(v.errors, "\n- "))
+			r.Error = APIError{Code: "InvalidParameter", Message: msg}
+		}
+	}
+}
+
+// A validator validates values. Collects validations errors which occurs.
+type validator struct {
+	errors []string
+}
+
+// validateAny will validate any struct, slice or map type. All validations
+// are also performed recursively for nested types.
+func (v *validator) validateAny(value reflect.Value, path string) {
+	value = reflect.Indirect(value)
+	if !value.IsValid() {
+		return
+	}
+
+	switch value.Kind() {
+	case reflect.Struct:
+		v.validateStruct(value, path)
+	case reflect.Slice:
+		for i := 0; i < value.Len(); i++ {
+			v.validateAny(value.Index(i), path+fmt.Sprintf("[%d]", i))
+		}
+	case reflect.Map:
+		for _, n := range value.MapKeys() {
+			v.validateAny(value.MapIndex(n), path+fmt.Sprintf("[%q]", n.String()))
+		}
+	}
+}
+
+// validateStruct will validate the struct value's fields. If the structure has
+// nested types those types will be validated also.
+func (v *validator) validateStruct(value reflect.Value, path string) {
+	prefix := "."
+	if path == "" {
+		prefix = ""
+	}
+
+	for i := 0; i < value.Type().NumField(); i++ {
+		f := value.Type().Field(i)
+		if strings.ToLower(f.Name[0:1]) == f.Name[0:1] {
+			continue
+		}
+		fvalue := value.FieldByName(f.Name)
+
+		notset := false
+		if f.Tag.Get("required") != "" {
+			switch fvalue.Kind() {
+			case reflect.Ptr, reflect.Slice:
+				if fvalue.IsNil() {
+					notset = true
+				}
+			default:
+				if !fvalue.IsValid() {
+					notset = true
+				}
+			}
+		}
+
+		if notset {
+			msg := "missing required parameter: " + path + prefix + f.Name
+			v.errors = append(v.errors, msg)
+		} else {
+			v.validateAny(fvalue, path+prefix+f.Name)
+		}
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/param_validator_test.go

+package aws_test
+
+import (
+	"testing"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+	"github.com/stretchr/testify/assert"
+)
+
+var service = func() *aws.Service {
+	s := &aws.Service{
+		Config:      &aws.Config{},
+		ServiceName: "mock-service",
+		APIVersion:  "2015-01-01",
+	}
+	return s
+}()
+
+type StructShape struct {
+	RequiredList   []*ConditionalStructShape           `required:"true"`
+	RequiredMap    *map[string]*ConditionalStructShape `required:"true"`
+	RequiredBool   *bool                               `required:"true"`
+	OptionalStruct *ConditionalStructShape
+
+	hiddenParameter *string
+
+	metadataStructureShape
+}
+
+type metadataStructureShape struct {
+	SDKShapeTraits bool
+}
+
+type ConditionalStructShape struct {
+	Name           *string `required:"true"`
+	SDKShapeTraits bool
+}
+
+func TestNoErrors(t *testing.T) {
+	input := &StructShape{
+		RequiredList: []*ConditionalStructShape{},
+		RequiredMap: &map[string]*ConditionalStructShape{
+			"key1": &ConditionalStructShape{Name: aws.String("Name")},
+			"key2": &ConditionalStructShape{Name: aws.String("Name")},
+		},
+		RequiredBool:   aws.Boolean(true),
+		OptionalStruct: &ConditionalStructShape{Name: aws.String("Name")},
+	}
+
+	req := aws.NewRequest(service, &aws.Operation{}, input, nil)
+	aws.ValidateParameters(req)
+	assert.NoError(t, req.Error)
+}
+
+func TestMissingRequiredParameters(t *testing.T) {
+	input := &StructShape{}
+	req := aws.NewRequest(service, &aws.Operation{}, input, nil)
+	aws.ValidateParameters(req)
+	err := aws.Error(req.Error)
+
+	assert.Error(t, err)
+	assert.Equal(t, "InvalidParameter", err.Code)
+	assert.Equal(t, "3 validation errors:\n- missing required parameter: RequiredList\n- missing required parameter: RequiredMap\n- missing required parameter: RequiredBool", err.Message)
+}
+
+func TestNestedMissingRequiredParameters(t *testing.T) {
+	input := &StructShape{
+		RequiredList: []*ConditionalStructShape{&ConditionalStructShape{}},
+		RequiredMap: &map[string]*ConditionalStructShape{
+			"key1": &ConditionalStructShape{Name: aws.String("Name")},
+			"key2": &ConditionalStructShape{},
+		},
+		RequiredBool:   aws.Boolean(true),
+		OptionalStruct: &ConditionalStructShape{},
+	}
+
+	req := aws.NewRequest(service, &aws.Operation{}, input, nil)
+	aws.ValidateParameters(req)
+	err := aws.Error(req.Error)
+
+	assert.Error(t, err)
+	assert.Equal(t, "InvalidParameter", err.Code)
+	assert.Equal(t, "3 validation errors:\n- missing required parameter: RequiredList[0].Name\n- missing required parameter: RequiredMap[\"key2\"].Name\n- missing required parameter: OptionalStruct.Name", err.Message)
+
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/request.go

+package aws
+
+import (
+	"bytes"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"reflect"
+	"strings"
+	"time"
+)
+
+// A Request is the service request to be made.
+type Request struct {
+	*Service
+	Handlers     Handlers
+	Time         time.Time
+	ExpireTime   time.Duration
+	Operation    *Operation
+	HTTPRequest  *http.Request
+	HTTPResponse *http.Response
+	Body         io.ReadSeeker
+	bodyStart    int64 // offset from beginning of Body that the request body starts
+	Params       interface{}
+	Error        error
+	Data         interface{}
+	RequestID    string
+	RetryCount   uint
+	Retryable    SettableBool
+	RetryDelay   time.Duration
+
+	built  bool
+	signed bool
+}
+
+// An Operation is the service API operation to be made.
+type Operation struct {
+	Name       string
+	HTTPMethod string
+	HTTPPath   string
+}
+
+// NewRequest returns a new Request pointer for the service API
+// operation and parameters.
+//
+// Params is any value of input parameters to be the request payload.
+// Data is pointer value to an object which the request's response
+// payload will be deserialized to.
+func NewRequest(service *Service, operation *Operation, params interface{}, data interface{}) *Request {
+	method := operation.HTTPMethod
+	if method == "" {
+		method = "POST"
+	}
+	p := operation.HTTPPath
+	if p == "" {
+		p = "/"
+	}
+
+	httpReq, _ := http.NewRequest(method, "", nil)
+	httpReq.URL, _ = url.Parse(service.Endpoint + p)
+
+	r := &Request{
+		Service:     service,
+		Handlers:    service.Handlers.copy(),
+		Time:        time.Now(),
+		ExpireTime:  0,
+		Operation:   operation,
+		HTTPRequest: httpReq,
+		Body:        nil,
+		Params:      params,
+		Error:       nil,
+		Data:        data,
+	}
+	r.SetBufferBody([]byte{})
+
+	return r
+}
+
+// WillRetry returns if the request's can be retried.
+func (r *Request) WillRetry() bool {
+	return r.Error != nil && r.Retryable.Get() && r.RetryCount < r.Service.MaxRetries()
+}
+
+// ParamsFilled returns if the request's parameters have been populated
+// and the parameters are valid. False is returned if no parameters are
+// provided or invalid.
+func (r *Request) ParamsFilled() bool {
+	return r.Params != nil && reflect.ValueOf(r.Params).Elem().IsValid()
+}
+
+// DataFilled returns true if the request's data for response deserialization
+// target has been set and is a valid. False is returned if data is not
+// set, or is invalid.
+func (r *Request) DataFilled() bool {
+	return r.Data != nil && reflect.ValueOf(r.Data).Elem().IsValid()
+}
+
+// SetBufferBody will set the request's body bytes that will be sent to
+// the service API.
+func (r *Request) SetBufferBody(buf []byte) {
+	r.SetReaderBody(bytes.NewReader(buf))
+}
+
+// SetStringBody sets the body of the request to be backed by a string.
+func (r *Request) SetStringBody(s string) {
+	r.SetReaderBody(strings.NewReader(s))
+}
+
+// SetReaderBody will set the request's body reader.
+func (r *Request) SetReaderBody(reader io.ReadSeeker) {
+	r.HTTPRequest.Body = ioutil.NopCloser(reader)
+	r.Body = reader
+}
+
+// Presign returns the request's signed URL. Error will be returned
+// if the signing fails.
+func (r *Request) Presign(expireTime time.Duration) (string, error) {
+	r.ExpireTime = expireTime
+	r.Sign()
+	if r.Error != nil {
+		return "", r.Error
+	}
+	return r.HTTPRequest.URL.String(), nil
+}
+
+// Build will build the request's object so it can be signed and sent
+// to the service. Build will also validate all the request's parameters.
+// Anny additional build Handlers set on this request will be run
+// in the order they were set.
+//
+// The request will only be built once. Multiple calls to build will have
+// no effect.
+//
+// If any Validate or Build errors occur the build will stop and the error
+// which occurred will be returned.
+func (r *Request) Build() error {
+	if !r.built {
+		r.Error = nil
+		r.Handlers.Validate.Run(r)
+		if r.Error != nil {
+			return r.Error
+		}
+		r.Handlers.Build.Run(r)
+		r.built = true
+	}
+
+	return r.Error
+}
+
+// Sign will sign the request retuning error if errors are encountered.
+//
+// Send will build the request prior to signing. All Sign Handlers will
+// be executed in the order they were set.
+func (r *Request) Sign() error {
+	if r.signed {
+		return r.Error
+	}
+
+	r.Build()
+	if r.Error != nil {
+		return r.Error
+	}
+
+	r.Handlers.Sign.Run(r)
+	r.signed = r.Error != nil
+	return r.Error
+}
+
+// Send will send the request returning error if errors are encountered.
+//
+// Send will sign the request prior to sending. All Send Handlers will
+// be executed in the order they were set.
+func (r *Request) Send() error {
+	for {
+		r.Sign()
+		if r.Error != nil {
+			return r.Error
+		}
+
+		if r.Retryable.Get() {
+			// Re-seek the body back to the original point in for a retry so that
+			// send will send the body's contents again in the upcoming request.
+			r.Body.Seek(r.bodyStart, 0)
+		}
+		r.Retryable.Reset()
+
+		r.Handlers.Send.Run(r)
+		if r.Error != nil {
+			return r.Error
+		}
+
+		r.Handlers.UnmarshalMeta.Run(r)
+		r.Handlers.ValidateResponse.Run(r)
+		if r.Error != nil {
+			r.Handlers.UnmarshalError.Run(r)
+			r.Handlers.Retry.Run(r)
+			r.Handlers.AfterRetry.Run(r)
+			if r.Error != nil {
+				return r.Error
+			}
+			continue
+		}
+
+		r.Handlers.Unmarshal.Run(r)
+		if r.Error != nil {
+			r.Handlers.Retry.Run(r)
+			r.Handlers.AfterRetry.Run(r)
+			if r.Error != nil {
+				return r.Error
+			}
+			continue
+		}
+
+		break
+	}
+
+	return nil
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/request_test.go

+package aws
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/awslabs/aws-sdk-go/aws/credentials"
+	"github.com/stretchr/testify/assert"
+)
+
+type testData struct {
+	Data string
+}
+
+func body(str string) io.ReadCloser {
+	return ioutil.NopCloser(bytes.NewReader([]byte(str)))
+}
+
+func unmarshal(req *Request) {
+	defer req.HTTPResponse.Body.Close()
+	if req.Data != nil {
+		json.NewDecoder(req.HTTPResponse.Body).Decode(req.Data)
+	}
+	return
+}
+
+func unmarshalError(req *Request) {
+	bodyBytes, err := ioutil.ReadAll(req.HTTPResponse.Body)
+	if err != nil {
+		req.Error = err
+		return
+	}
+	if len(bodyBytes) == 0 {
+		req.Error = APIError{
+			StatusCode: req.HTTPResponse.StatusCode,
+			Message:    req.HTTPResponse.Status,
+		}
+		return
+	}
+	var jsonErr jsonErrorResponse
+	if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
+		req.Error = err
+		return
+	}
+	req.Error = APIError{
+		StatusCode: req.HTTPResponse.StatusCode,
+		Code:       jsonErr.Code,
+		Message:    jsonErr.Message,
+	}
+}
+
+type jsonErrorResponse struct {
+	Code    string `json:"__type"`
+	Message string `json:"message"`
+}
+
+// test that retries occur for 5xx status codes
+func TestRequestRecoverRetry5xx(t *testing.T) {
+	reqNum := 0
+	reqs := []http.Response{
+		http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
+		http.Response{StatusCode: 501, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
+		http.Response{StatusCode: 200, Body: body(`{"data":"valid"}`)},
+	}
+
+	s := NewService(&Config{MaxRetries: 10})
+	s.Handlers.Validate.Clear()
+	s.Handlers.Unmarshal.PushBack(unmarshal)
+	s.Handlers.UnmarshalError.PushBack(unmarshalError)
+	s.Handlers.Send.Clear() // mock sending
+	s.Handlers.Send.PushBack(func(r *Request) {
+		r.HTTPResponse = &reqs[reqNum]
+		reqNum++
+	})
+	out := &testData{}
+	r := NewRequest(s, &Operation{Name: "Operation"}, nil, out)
+	err := r.Send()
+	assert.Nil(t, err)
+	assert.Equal(t, 2, int(r.RetryCount))
+	assert.Equal(t, "valid", out.Data)
+}
+
+// test that retries occur for 4xx status codes with a response type that can be retried - see `shouldRetry`
+func TestRequestRecoverRetry4xxRetryable(t *testing.T) {
+	reqNum := 0
+	reqs := []http.Response{
+		http.Response{StatusCode: 400, Body: body(`{"__type":"Throttling","message":"Rate exceeded."}`)},
+		http.Response{StatusCode: 429, Body: body(`{"__type":"ProvisionedThroughputExceededException","message":"Rate exceeded."}`)},
+		http.Response{StatusCode: 200, Body: body(`{"data":"valid"}`)},
+	}
+
+	s := NewService(&Config{MaxRetries: 10})
+	s.Handlers.Validate.Clear()
+	s.Handlers.Unmarshal.PushBack(unmarshal)
+	s.Handlers.UnmarshalError.PushBack(unmarshalError)
+	s.Handlers.Send.Clear() // mock sending
+	s.Handlers.Send.PushBack(func(r *Request) {
+		r.HTTPResponse = &reqs[reqNum]
+		reqNum++
+	})
+	out := &testData{}
+	r := NewRequest(s, &Operation{Name: "Operation"}, nil, out)
+	err := r.Send()
+	assert.Nil(t, err)
+	assert.Equal(t, 2, int(r.RetryCount))
+	assert.Equal(t, "valid", out.Data)
+}
+
+// test that retries don't occur for 4xx status codes with a response type that can't be retried
+func TestRequest4xxUnretryable(t *testing.T) {
+	s := NewService(&Config{MaxRetries: 10})
+	s.Handlers.Validate.Clear()
+	s.Handlers.Unmarshal.PushBack(unmarshal)
+	s.Handlers.UnmarshalError.PushBack(unmarshalError)
+	s.Handlers.Send.Clear() // mock sending
+	s.Handlers.Send.PushBack(func(r *Request) {
+		r.HTTPResponse = &http.Response{StatusCode: 401, Body: body(`{"__type":"SignatureDoesNotMatch","message":"Signature does not match."}`)}
+	})
+	out := &testData{}
+	r := NewRequest(s, &Operation{Name: "Operation"}, nil, out)
+	err := r.Send()
+	apiErr := Error(err)
+	assert.NotNil(t, err)
+	assert.NotNil(t, apiErr)
+	assert.Equal(t, 401, apiErr.StatusCode)
+	assert.Equal(t, "SignatureDoesNotMatch", apiErr.Code)
+	assert.Equal(t, "Signature does not match.", apiErr.Message)
+	assert.Equal(t, 0, int(r.RetryCount))
+}
+
+func TestRequestExhaustRetries(t *testing.T) {
+	delays := []time.Duration{}
+	sleepDelay = func(delay time.Duration) {
+		delays = append(delays, delay)
+	}
+
+	reqNum := 0
+	reqs := []http.Response{
+		http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
+		http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
+		http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
+		http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
+	}
+
+	s := NewService(&Config{MaxRetries: -1})
+	s.Handlers.Validate.Clear()
+	s.Handlers.Unmarshal.PushBack(unmarshal)
+	s.Handlers.UnmarshalError.PushBack(unmarshalError)
+	s.Handlers.Send.Clear() // mock sending
+	s.Handlers.Send.PushBack(func(r *Request) {
+		r.HTTPResponse = &reqs[reqNum]
+		reqNum++
+	})
+	r := NewRequest(s, &Operation{Name: "Operation"}, nil, nil)
+	err := r.Send()
+	apiErr := Error(err)
+	assert.NotNil(t, err)
+	assert.NotNil(t, apiErr)
+	assert.Equal(t, 500, apiErr.StatusCode)
+	assert.Equal(t, "UnknownError", apiErr.Code)
+	assert.Equal(t, "An error occurred.", apiErr.Message)
+	assert.Equal(t, 3, int(r.RetryCount))
+	assert.True(t, reflect.DeepEqual([]time.Duration{30 * time.Millisecond, 60 * time.Millisecond, 120 * time.Millisecond}, delays))
+}
+
+// test that the request is retried after the credentials are expired.
+func TestRequestRecoverExpiredCreds(t *testing.T) {
+	reqNum := 0
+	reqs := []http.Response{
+		http.Response{StatusCode: 400, Body: body(`{"__type":"ExpiredTokenException","message":"expired token"}`)},
+		http.Response{StatusCode: 200, Body: body(`{"data":"valid"}`)},
+	}
+
+	s := NewService(&Config{MaxRetries: 10, Credentials: credentials.NewStaticCredentials("AKID", "SECRET", "")})
+	s.Handlers.Validate.Clear()
+	s.Handlers.Unmarshal.PushBack(unmarshal)
+	s.Handlers.UnmarshalError.PushBack(unmarshalError)
+
+	credExpiredBeforeRetry := false
+	credExpiredAfterRetry := false
+
+	s.Handlers.Retry.PushBack(func(r *Request) {
+		if err := Error(r.Error); err != nil && err.Code == "ExpiredTokenException" {
+			credExpiredBeforeRetry = r.Config.Credentials.IsExpired()
+		}
+	})
+
+	s.Handlers.AfterRetry.PushBack(func(r *Request) {
+		credExpiredAfterRetry = r.Config.Credentials.IsExpired()
+	})
+
+	s.Handlers.Sign.Clear()
+	s.Handlers.Sign.PushBack(func(r *Request) {
+		r.Config.Credentials.Get()
+	})
+	s.Handlers.Send.Clear() // mock sending
+	s.Handlers.Send.PushBack(func(r *Request) {
+		r.HTTPResponse = &reqs[reqNum]
+		reqNum++
+	})
+	out := &testData{}
+	r := NewRequest(s, &Operation{Name: "Operation"}, nil, out)
+	err := r.Send()
+	assert.Nil(t, err)
+
+	assert.False(t, credExpiredBeforeRetry, "Expect valid creds before retry check")
+	assert.True(t, credExpiredAfterRetry, "Expect expired creds after retry check")
+	assert.False(t, s.Config.Credentials.IsExpired(), "Expect valid creds after cred expired recovery")
+
+	assert.Equal(t, 1, int(r.RetryCount))
+	assert.Equal(t, "valid", out.Data)
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/service.go

+package aws
+
+import (
+	"fmt"
+	"math"
+	"net/http"
+	"net/http/httputil"
+	"regexp"
+	"time"
+
+	"github.com/awslabs/aws-sdk-go/internal/endpoints"
+)
+
+// A Service implements the base service request and response handling
+// used by all services.
+type Service struct {
+	Config            *Config
+	Handlers          Handlers
+	ManualSend        bool
+	ServiceName       string
+	APIVersion        string
+	Endpoint          string
+	SigningName       string
+	SigningRegion     string
+	JSONVersion       string
+	TargetPrefix      string
+	RetryRules        func(*Request) time.Duration
+	ShouldRetry       func(*Request) bool
+	DefaultMaxRetries uint
+}
+
+var schemeRE = regexp.MustCompile("^([^:]+)://")
+
+// NewService will return a pointer to a new Server object initialized.
+func NewService(config *Config) *Service {
+	svc := &Service{Config: config}
+	svc.Initialize()
+	return svc
+}
+
+// Initialize initializes the service.
+func (s *Service) Initialize() {
+	if s.Config == nil {
+		s.Config = &Config{}
+	}
+	if s.Config.HTTPClient == nil {
+		s.Config.HTTPClient = http.DefaultClient
+	}
+
+	if s.RetryRules == nil {
+		s.RetryRules = retryRules
+	}
+
+	if s.ShouldRetry == nil {
+		s.ShouldRetry = shouldRetry
+	}
+
+	s.DefaultMaxRetries = 3
+	s.Handlers.Validate.PushBack(ValidateEndpointHandler)
+	s.Handlers.Build.PushBack(UserAgentHandler)
+	s.Handlers.Sign.PushBack(BuildContentLength)
+	s.Handlers.Send.PushBack(SendHandler)
+	s.Handlers.AfterRetry.PushBack(AfterRetryHandler)
+	s.Handlers.ValidateResponse.PushBack(ValidateResponseHandler)
+	s.AddDebugHandlers()
+	s.buildEndpoint()
+
+	if !s.Config.DisableParamValidation {
+		s.Handlers.Validate.PushBack(ValidateParameters)
+	}
+}
+
+// buildEndpoint builds the endpoint values the service will use to make requests with.
+func (s *Service) buildEndpoint() {
+	if s.Config.Endpoint != "" {
+		s.Endpoint = s.Config.Endpoint
+	} else {
+		s.Endpoint, s.SigningRegion =
+			endpoints.EndpointForRegion(s.ServiceName, s.Config.Region)
+	}
+
+	if s.Endpoint != "" && !schemeRE.MatchString(s.Endpoint) {
+		scheme := "https"
+		if s.Config.DisableSSL {
+			scheme = "http"
+		}
+		s.Endpoint = scheme + "://" + s.Endpoint
+	}
+}
+
+// AddDebugHandlers injects debug logging handlers into the service to log request
+// debug information.
+func (s *Service) AddDebugHandlers() {
+	out := s.Config.Logger
+	if s.Config.LogLevel == 0 {
+		return
+	}
+
+	s.Handlers.Send.PushFront(func(r *Request) {
+		logBody := r.Config.LogHTTPBody
+		dumpedBody, _ := httputil.DumpRequestOut(r.HTTPRequest, logBody)
+
+		fmt.Fprintf(out, "---[ REQUEST POST-SIGN ]-----------------------------\n")
+		fmt.Fprintf(out, "%s\n", string(dumpedBody))
+		fmt.Fprintf(out, "-----------------------------------------------------\n")
+	})
+	s.Handlers.Send.PushBack(func(r *Request) {
+		fmt.Fprintf(out, "---[ RESPONSE ]--------------------------------------\n")
+		if r.HTTPResponse != nil {
+			logBody := r.Config.LogHTTPBody
+			dumpedBody, _ := httputil.DumpResponse(r.HTTPResponse, logBody)
+			fmt.Fprintf(out, "%s\n", string(dumpedBody))
+		} else if r.Error != nil {
+			fmt.Fprintf(out, "%s\n", r.Error)
+		}
+		fmt.Fprintf(out, "-----------------------------------------------------\n")
+	})
+}
+
+// MaxRetries returns the number of maximum returns the service will use to make
+// an individual API request.
+func (s *Service) MaxRetries() uint {
+	if s.Config.MaxRetries < 0 {
+		return s.DefaultMaxRetries
+	}
+	return uint(s.Config.MaxRetries)
+}
+
+// retryRules returns the delay duration before retrying this request again
+func retryRules(r *Request) time.Duration {
+	delay := time.Duration(math.Pow(2, float64(r.RetryCount))) * 30
+	return delay * time.Millisecond
+}
+
+// Collection of service response codes which are generically
+// retryable for all services.
+var retryableCodes = map[string]struct{}{
+	"ExpiredTokenException":                  struct{}{},
+	"ProvisionedThroughputExceededException": struct{}{},
+	"Throttling":                             struct{}{},
+}
+
+// shouldRetry returns if the request should be retried.
+func shouldRetry(r *Request) bool {
+	if r.HTTPResponse.StatusCode >= 500 {
+		return true
+	}
+	if err := Error(r.Error); err != nil {
+		if _, ok := retryableCodes[err.Code]; ok {
+			return true
+		}
+	}
+	return false
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/types.go

+package aws
+
+import (
+	"fmt"
+	"io"
+	"time"
+)
+
+// String converts a Go string into a string pointer.
+func String(v string) *string {
+	return &v
+}
+
+// Boolean converts a Go bool into a boolean pointer.
+func Boolean(v bool) *bool {
+	return &v
+}
+
+// Long converts a Go int64 into a long pointer.
+func Long(v int64) *int64 {
+	return &v
+}
+
+// Double converts a Go float64 into a double pointer.
+func Double(v float64) *float64 {
+	return &v
+}
+
+// Time converts a Go Time into a Time pointer
+func Time(t time.Time) *time.Time {
+	return &t
+}
+
+// ReadSeekCloser wraps a io.Reader returning a ReaderSeakerCloser
+func ReadSeekCloser(r io.Reader) ReaderSeekerCloser {
+	return ReaderSeekerCloser{r}
+}
+
+// ReaderSeekerCloser represents a reader that can also delegate io.Seeker and
+// io.Closer interfaces to the underlying object if they are available.
+type ReaderSeekerCloser struct {
+	r io.Reader
+}
+
+// Read reads from the reader up to size of p. The number of bytes read, and
+// error if it occurred will be returned.
+//
+// If the reader is not an io.Reader zero bytes read, and nil error will be returned.
+//
+// Performs the same functionality as io.Reader Read
+func (r ReaderSeekerCloser) Read(p []byte) (int, error) {
+	switch t := r.r.(type) {
+	case io.Reader:
+		return t.Read(p)
+	}
+	return 0, nil
+}
+
+// Seek sets the offset for the next Read to offset, interpreted according to
+// whence: 0 means relative to the origin of the file, 1 means relative to the
+// current offset, and 2 means relative to the end. Seek returns the new offset
+// and an error, if any.
+//
+// If the ReaderSeekerCloser is not an io.Seeker nothing will be done.
+func (r ReaderSeekerCloser) Seek(offset int64, whence int) (int64, error) {
+	switch t := r.r.(type) {
+	case io.Seeker:
+		return t.Seek(offset, whence)
+	}
+	return int64(0), nil
+}
+
+// Close closes the ReaderSeekerCloser.
+//
+// If the ReaderSeekerCloser is not an io.Closer nothing will be done.
+func (r ReaderSeekerCloser) Close() error {
+	switch t := r.r.(type) {
+	case io.Closer:
+		return t.Close()
+	}
+	return nil
+}
+
+// A SettableBool provides a boolean value which includes the state if
+// the value was set or unset.  The set state is in addition to the value's
+// value(true|false)
+type SettableBool struct {
+	value bool
+	set   bool
+}
+
+// SetBool returns a SettableBool with a value set
+func SetBool(value bool) SettableBool {
+	return SettableBool{value: value, set: true}
+}
+
+// Get returns the value. Will always be false if the SettableBool was not set.
+func (b *SettableBool) Get() bool {
+	if !b.set {
+		return false
+	}
+	return b.value
+}
+
+// Set sets the value and updates the state that the value has been set.
+func (b *SettableBool) Set(value bool) {
+	b.value = value
+	b.set = true
+}
+
+// IsSet returns if the value has been set
+func (b *SettableBool) IsSet() bool {
+	return b.set
+}
+
+// Reset resets the state and value of the SettableBool to its initial default
+// state of not set and zero value.
+func (b *SettableBool) Reset() {
+	b.value = false
+	b.set = false
+}
+
+// String returns the string representation of the value if set. Zero if not set.
+func (b *SettableBool) String() string {
+	return fmt.Sprintf("%t", b.Get())
+}
+
+// GoString returns the string representation of the SettableBool value and state
+func (b *SettableBool) GoString() string {
+	return fmt.Sprintf("Bool{value:%t, set:%t}", b.value, b.set)
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/aws/version.go

+// Package aws provides core functionality for making requests to AWS services.
+package aws
+
+// SDKName is the name of this AWS SDK
+const SDKName = "aws-sdk-go"
+
+// SDKVersion is the version of this SDK
+const SDKVersion = "0.5.0"

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/endpoints/endpoints.go

+package endpoints
+
+//go:generate go run ../model/cli/gen-endpoints/main.go endpoints.json endpoints_map.go
+
+import "strings"
+
+// EndpointForRegion returns an endpoint and its signing region for a service and region.
+// if the service and region pair are not found endpoint and signingRegion will be empty.
+func EndpointForRegion(svcName, region string) (endpoint, signingRegion string) {
+	derivedKeys := []string{
+		region + "/" + svcName,
+		region + "/*",
+		"*/" + svcName,
+		"*/*",
+	}
+
+	for _, key := range derivedKeys {
+		if val, ok := endpointsMap.Endpoints[key]; ok {
+			ep := val.Endpoint
+			ep = strings.Replace(ep, "{region}", region, -1)
+			ep = strings.Replace(ep, "{service}", svcName, -1)
+
+			endpoint = ep
+			signingRegion = val.SigningRegion
+			return
+		}
+	}
+	return
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/endpoints/endpoints.json

+{
+  "version": 2,
+  "endpoints": {
+    "*/*": {
+      "endpoint": "{service}.{region}.amazonaws.com"
+    },
+    "cn-north-1/*": {
+      "endpoint": "{service}.{region}.amazonaws.com.cn",
+      "signatureVersion": "v4"
+    },
+    "us-gov-west-1/iam": {
+      "endpoint": "iam.us-gov.amazonaws.com"
+    },
+    "us-gov-west-1/sts": {
+      "endpoint": "sts.us-gov-west-1.amazonaws.com"
+    },
+    "us-gov-west-1/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "*/cloudfront": {
+      "endpoint": "cloudfront.amazonaws.com",
+      "signingRegion": "us-east-1"
+    },
+    "*/cloudsearchdomain": {
+      "endpoint": "",
+      "signingRegion": "us-east-1"
+    },
+    "*/iam": {
+      "endpoint": "iam.amazonaws.com",
+      "signingRegion": "us-east-1"
+    },
+    "*/importexport": {
+      "endpoint": "importexport.amazonaws.com",
+      "signingRegion": "us-east-1"
+    },
+    "*/route53": {
+      "endpoint": "route53.amazonaws.com",
+      "signingRegion": "us-east-1"
+    },
+    "*/sts": {
+      "endpoint": "sts.amazonaws.com",
+      "signingRegion": "us-east-1"
+    },
+    "us-east-1/sdb": {
+      "endpoint": "sdb.amazonaws.com",
+      "signingRegion": "us-east-1"
+    },
+    "us-east-1/s3": {
+      "endpoint": "s3.amazonaws.com"
+    },
+    "us-west-1/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "us-west-2/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "eu-west-1/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "ap-southeast-1/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "ap-southeast-2/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "ap-northeast-1/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "sa-east-1/s3": {
+      "endpoint": "s3-{region}.amazonaws.com"
+    },
+    "eu-central-1/s3": {
+      "endpoint": "{service}.{region}.amazonaws.com",
+      "signatureVersion": "v4"
+    }
+  }
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/endpoints/endpoints_map.go

+package endpoints
+
+// THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT.
+
+type endpointStruct struct {
+	Version   int
+	Endpoints map[string]endpointEntry
+}
+
+type endpointEntry struct {
+	Endpoint      string
+	SigningRegion string
+}
+
+var endpointsMap = endpointStruct{
+	Version: 2,
+	Endpoints: map[string]endpointEntry{
+		"*/*": endpointEntry{
+			Endpoint: "{service}.{region}.amazonaws.com",
+		},
+		"*/cloudfront": endpointEntry{
+			Endpoint:      "cloudfront.amazonaws.com",
+			SigningRegion: "us-east-1",
+		},
+		"*/cloudsearchdomain": endpointEntry{
+			Endpoint:      "",
+			SigningRegion: "us-east-1",
+		},
+		"*/iam": endpointEntry{
+			Endpoint:      "iam.amazonaws.com",
+			SigningRegion: "us-east-1",
+		},
+		"*/importexport": endpointEntry{
+			Endpoint:      "importexport.amazonaws.com",
+			SigningRegion: "us-east-1",
+		},
+		"*/route53": endpointEntry{
+			Endpoint:      "route53.amazonaws.com",
+			SigningRegion: "us-east-1",
+		},
+		"*/sts": endpointEntry{
+			Endpoint:      "sts.amazonaws.com",
+			SigningRegion: "us-east-1",
+		},
+		"ap-northeast-1/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+		"ap-southeast-1/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+		"ap-southeast-2/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+		"cn-north-1/*": endpointEntry{
+			Endpoint: "{service}.{region}.amazonaws.com.cn",
+		},
+		"eu-central-1/s3": endpointEntry{
+			Endpoint: "{service}.{region}.amazonaws.com",
+		},
+		"eu-west-1/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+		"sa-east-1/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+		"us-east-1/s3": endpointEntry{
+			Endpoint: "s3.amazonaws.com",
+		},
+		"us-east-1/sdb": endpointEntry{
+			Endpoint:      "sdb.amazonaws.com",
+			SigningRegion: "us-east-1",
+		},
+		"us-gov-west-1/iam": endpointEntry{
+			Endpoint: "iam.us-gov.amazonaws.com",
+		},
+		"us-gov-west-1/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+		"us-gov-west-1/sts": endpointEntry{
+			Endpoint: "sts.us-gov-west-1.amazonaws.com",
+		},
+		"us-west-1/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+		"us-west-2/s3": endpointEntry{
+			Endpoint: "s3-{region}.amazonaws.com",
+		},
+	},
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/endpoints/endpoints_test.go

+package endpoints
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGlobalEndpoints(t *testing.T) {
+	region := "mock-region-1"
+	svcs := []string{"cloudfront", "iam", "importexport", "route53", "sts"}
+
+	for _, name := range svcs {
+		ep, sr := EndpointForRegion(name, region)
+		assert.Equal(t, name+".amazonaws.com", ep)
+		assert.Equal(t, "us-east-1", sr)
+	}
+}
+
+func TestServicesInCN(t *testing.T) {
+	region := "cn-north-1"
+	svcs := []string{"cloudfront", "iam", "importexport", "route53", "sts", "s3"}
+
+	for _, name := range svcs {
+		ep, _ := EndpointForRegion(name, region)
+		assert.Equal(t, name+"."+region+".amazonaws.com.cn", ep)
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/protocol/ec2query/build.go

+package ec2query
+
+//go:generate go run ../../fixtures/protocol/generate.go ../../fixtures/protocol/input/ec2.json build_test.go
+
+import (
+	"net/url"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+	"github.com/awslabs/aws-sdk-go/internal/protocol/query/queryutil"
+)
+
+// Build builds a request for the EC2 protocol.
+func Build(r *aws.Request) {
+	body := url.Values{
+		"Action":  {r.Operation.Name},
+		"Version": {r.Service.APIVersion},
+	}
+	if err := queryutil.Parse(body, r.Params, true); err != nil {
+		r.Error = err
+		return
+	}
+
+	if r.ExpireTime == 0 {
+		r.HTTPRequest.Method = "POST"
+		r.HTTPRequest.Header.Set("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")
+		r.SetBufferBody([]byte(body.Encode()))
+	} else { // This is a pre-signed request
+		r.HTTPRequest.Method = "GET"
+		r.HTTPRequest.URL.RawQuery = body.Encode()
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/protocol/ec2query/unmarshal.go

+package ec2query
+
+//go:generate go run ../../fixtures/protocol/generate.go ../../fixtures/protocol/output/ec2.json unmarshal_test.go
+
+import (
+	"encoding/xml"
+	"io"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+	"github.com/awslabs/aws-sdk-go/internal/protocol/xml/xmlutil"
+)
+
+// Unmarshal unmarshals a response body for the EC2 protocol.
+func Unmarshal(r *aws.Request) {
+	defer r.HTTPResponse.Body.Close()
+	if r.DataFilled() {
+		decoder := xml.NewDecoder(r.HTTPResponse.Body)
+		err := xmlutil.UnmarshalXML(r.Data, decoder, "")
+		if err != nil {
+			r.Error = err
+			return
+		}
+	}
+}
+
+// UnmarshalMeta unmarshals response headers for the EC2 protocol.
+func UnmarshalMeta(r *aws.Request) {
+	// TODO implement unmarshaling of request IDs
+}
+
+type xmlErrorResponse struct {
+	XMLName   xml.Name `xml:"Response"`
+	Code      string   `xml:"Errors>Error>Code"`
+	Message   string   `xml:"Errors>Error>Message"`
+	RequestID string   `xml:"RequestId"`
+}
+
+// UnmarshalError unmarshals a response error for the EC2 protocol.
+func UnmarshalError(r *aws.Request) {
+	defer r.HTTPResponse.Body.Close()
+
+	resp := &xmlErrorResponse{}
+	err := xml.NewDecoder(r.HTTPResponse.Body).Decode(resp)
+	if err != nil && err != io.EOF {
+		r.Error = err
+	} else {
+		r.Error = aws.APIError{
+			StatusCode: r.HTTPResponse.StatusCode,
+			Code:       resp.Code,
+			Message:    resp.Message,
+		}
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/protocol/query/queryutil/queryutil.go

+package queryutil
+
+import (
+	"encoding/base64"
+	"fmt"
+	"net/url"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Parse parses an object i and fills a url.Values object. The isEC2 flag
+// indicates if this is the EC2 Query sub-protocol.
+func Parse(body url.Values, i interface{}, isEC2 bool) error {
+	q := queryParser{isEC2: isEC2}
+	return q.parseValue(body, reflect.ValueOf(i), "", "")
+}
+
+func elemOf(value reflect.Value) reflect.Value {
+	for value.Kind() == reflect.Ptr {
+		value = value.Elem()
+	}
+	return value
+}
+
+type queryParser struct {
+	isEC2 bool
+}
+
+func (q *queryParser) parseValue(v url.Values, value reflect.Value, prefix string, tag reflect.StructTag) error {
+	value = elemOf(value)
+
+	// no need to handle zero values
+	if !value.IsValid() {
+		return nil
+	}
+
+	t := tag.Get("type")
+	if t == "" {
+		switch value.Kind() {
+		case reflect.Struct:
+			t = "structure"
+		case reflect.Slice:
+			t = "list"
+		case reflect.Map:
+			t = "map"
+		}
+	}
+
+	switch t {
+	case "structure":
+		return q.parseStruct(v, value, prefix)
+	case "list":
+		return q.parseList(v, value, prefix, tag)
+	case "map":
+		return q.parseMap(v, value, prefix, tag)
+	default:
+		return q.parseScalar(v, value, prefix, tag)
+	}
+}
+
+func (q *queryParser) parseStruct(v url.Values, value reflect.Value, prefix string) error {
+	if !value.IsValid() {
+		return nil
+	}
+
+	t := value.Type()
+	for i := 0; i < value.NumField(); i++ {
+		if c := t.Field(i).Name[0:1]; strings.ToLower(c) == c {
+			continue // ignore unexported fields
+		}
+
+		value := elemOf(value.Field(i))
+		field := t.Field(i)
+		var name string
+
+		if q.isEC2 {
+			name = field.Tag.Get("queryName")
+		}
+		if name == "" {
+			if field.Tag.Get("flattened") != "" && field.Tag.Get("locationNameList") != "" {
+				name = field.Tag.Get("locationNameList")
+			} else if locName := field.Tag.Get("locationName"); locName != "" {
+				name = locName
+			}
+			if name != "" && q.isEC2 {
+				name = strings.ToUpper(name[0:1]) + name[1:]
+			}
+		}
+		if name == "" {
+			name = field.Name
+		}
+
+		if prefix != "" {
+			name = prefix + "." + name
+		}
+
+		if err := q.parseValue(v, value, name, field.Tag); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (q *queryParser) parseList(v url.Values, value reflect.Value, prefix string, tag reflect.StructTag) error {
+	// If it's empty, generate an empty value
+	if !value.IsNil() && value.Len() == 0 {
+		v.Set(prefix, "")
+		return nil
+	}
+
+	// check for unflattened list member
+	if !q.isEC2 && tag.Get("flattened") == "" {
+		prefix += ".member"
+	}
+
+	for i := 0; i < value.Len(); i++ {
+		slicePrefix := prefix
+		if slicePrefix == "" {
+			slicePrefix = strconv.Itoa(i + 1)
+		} else {
+			slicePrefix = slicePrefix + "." + strconv.Itoa(i+1)
+		}
+		if err := q.parseValue(v, value.Index(i), slicePrefix, ""); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (q *queryParser) parseMap(v url.Values, value reflect.Value, prefix string, tag reflect.StructTag) error {
+	// If it's empty, generate an empty value
+	if !value.IsNil() && value.Len() == 0 {
+		v.Set(prefix, "")
+		return nil
+	}
+
+	// check for unflattened list member
+	if !q.isEC2 && tag.Get("flattened") == "" {
+		prefix += ".entry"
+	}
+
+	// sort keys for improved serialization consistency.
+	// this is not strictly necessary for protocol support.
+	mapKeyValues := value.MapKeys()
+	mapKeys := map[string]reflect.Value{}
+	mapKeyNames := make([]string, len(mapKeyValues))
+	for i, mapKey := range mapKeyValues {
+		name := mapKey.String()
+		mapKeys[name] = mapKey
+		mapKeyNames[i] = name
+	}
+	sort.Strings(mapKeyNames)
+
+	for i, mapKeyName := range mapKeyNames {
+		mapKey := mapKeys[mapKeyName]
+		mapValue := value.MapIndex(mapKey)
+
+		kname := tag.Get("locationNameKey")
+		if kname == "" {
+			kname = "key"
+		}
+		vname := tag.Get("locationNameValue")
+		if vname == "" {
+			vname = "value"
+		}
+
+		// serialize key
+		var keyName string
+		if prefix == "" {
+			keyName = strconv.Itoa(i+1) + "." + kname
+		} else {
+			keyName = prefix + "." + strconv.Itoa(i+1) + "." + kname
+		}
+
+		if err := q.parseValue(v, mapKey, keyName, ""); err != nil {
+			return err
+		}
+
+		// serialize value
+		var valueName string
+		if prefix == "" {
+			valueName = strconv.Itoa(i+1) + "." + vname
+		} else {
+			valueName = prefix + "." + strconv.Itoa(i+1) + "." + vname
+		}
+
+		if err := q.parseValue(v, mapValue, valueName, ""); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (q *queryParser) parseScalar(v url.Values, r reflect.Value, name string, tag reflect.StructTag) error {
+	switch value := r.Interface().(type) {
+	case string:
+		v.Set(name, value)
+	case []byte:
+		if !r.IsNil() {
+			v.Set(name, base64.StdEncoding.EncodeToString(value))
+		}
+	case bool:
+		v.Set(name, strconv.FormatBool(value))
+	case int64:
+		v.Set(name, strconv.FormatInt(value, 10))
+	case int:
+		v.Set(name, strconv.Itoa(value))
+	case float64:
+		v.Set(name, strconv.FormatFloat(value, 'f', -1, 64))
+	case float32:
+		v.Set(name, strconv.FormatFloat(float64(value), 'f', -1, 32))
+	case time.Time:
+		const ISO8601UTC = "2006-01-02T15:04:05Z"
+		v.Set(name, value.UTC().Format(ISO8601UTC))
+	default:
+		return fmt.Errorf("unsupported value for param %s: %v (%s)", name, r.Interface(), r.Type().Name())
+	}
+	return nil
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/protocol/xml/xmlutil/build.go

+package xmlutil
+
+import (
+	"encoding/base64"
+	"encoding/xml"
+	"fmt"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// BuildXML will serialize params into an xml.Encoder.
+// Error will be returned if the serialization of any of the params or nested values fails.
+func BuildXML(params interface{}, e *xml.Encoder) error {
+	b := xmlBuilder{encoder: e, namespaces: map[string]string{}}
+	root := NewXMLElement(xml.Name{})
+	if err := b.buildValue(reflect.ValueOf(params), root, ""); err != nil {
+		return err
+	}
+	for _, c := range root.Children {
+		for _, v := range c {
+			return StructToXML(e, v, false)
+		}
+	}
+	return nil
+}
+
+// Returns the reflection element of a value, if it is a pointer.
+func elemOf(value reflect.Value) reflect.Value {
+	for value.Kind() == reflect.Ptr {
+		value = value.Elem()
+	}
+	return value
+}
+
+// A xmlBuilder serializes values from Go code to XML
+type xmlBuilder struct {
+	encoder    *xml.Encoder
+	namespaces map[string]string
+}
+
+// buildValue generic XMLNode builder for any type. Will build value for their specific type
+// struct, list, map, scalar.
+//
+// Also takes a "type" tag value to set what type a value should be converted to XMLNode as. If
+// type is not provided reflect will be used to determine the value's type.
+func (b *xmlBuilder) buildValue(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	value = elemOf(value)
+	if !value.IsValid() { // no need to handle zero values
+		return nil
+	} else if tag.Get("location") != "" { // don't handle non-body location values
+		return nil
+	}
+
+	t := tag.Get("type")
+	if t == "" {
+		switch value.Kind() {
+		case reflect.Struct:
+			t = "structure"
+		case reflect.Slice:
+			t = "list"
+		case reflect.Map:
+			t = "map"
+		}
+	}
+
+	switch t {
+	case "structure":
+		if field, ok := value.Type().FieldByName("SDKShapeTraits"); ok {
+			tag = tag + reflect.StructTag(" ") + field.Tag
+		}
+		return b.buildStruct(value, current, tag)
+	case "list":
+		return b.buildList(value, current, tag)
+	case "map":
+		return b.buildMap(value, current, tag)
+	default:
+		return b.buildScalar(value, current, tag)
+	}
+}
+
+// buildStruct adds a struct and its fields to the current XMLNode. All fields any any nested
+// types are converted to XMLNodes also.
+func (b *xmlBuilder) buildStruct(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	if !value.IsValid() {
+		return nil
+	}
+
+	fieldAdded := false
+
+	// unwrap payloads
+	if payload := tag.Get("payload"); payload != "" {
+		field, _ := value.Type().FieldByName(payload)
+		tag = field.Tag
+		value = elemOf(value.FieldByName(payload))
+
+		if !value.IsValid() {
+			return nil
+		}
+	}
+
+	child := NewXMLElement(xml.Name{Local: tag.Get("locationName")})
+
+	// there is an xmlNamespace associated with this struct
+	if prefix, uri := tag.Get("xmlPrefix"), tag.Get("xmlURI"); uri != "" {
+		ns := xml.Attr{
+			Name:  xml.Name{Local: "xmlns"},
+			Value: uri,
+		}
+		if prefix != "" {
+			b.namespaces[prefix] = uri // register the namespace
+			ns.Name.Local = "xmlns:" + prefix
+		}
+
+		child.Attr = append(child.Attr, ns)
+	}
+
+	t := value.Type()
+	for i := 0; i < value.NumField(); i++ {
+		if c := t.Field(i).Name[0:1]; strings.ToLower(c) == c {
+			continue // ignore unexported fields
+		}
+
+		member := elemOf(value.Field(i))
+		field := t.Field(i)
+		mTag := field.Tag
+
+		if mTag.Get("location") != "" { // skip non-body members
+			continue
+		}
+
+		memberName := mTag.Get("locationName")
+		if memberName == "" {
+			memberName = field.Name
+			mTag = reflect.StructTag(string(mTag) + ` locationName:"` + memberName + `"`)
+		}
+		if err := b.buildValue(member, child, mTag); err != nil {
+			return err
+		}
+
+		fieldAdded = true
+	}
+
+	if fieldAdded { // only append this child if we have one ore more valid members
+		current.AddChild(child)
+	}
+
+	return nil
+}
+
+// buildList adds the value's list items to the current XMLNode as children nodes. All
+// nested values in the list are converted to XMLNodes also.
+func (b *xmlBuilder) buildList(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	if value.IsNil() { // don't build omitted lists
+		return nil
+	}
+
+	// check for unflattened list member
+	flattened := tag.Get("flattened") != ""
+
+	xname := xml.Name{Local: tag.Get("locationName")}
+	if flattened {
+		for i := 0; i < value.Len(); i++ {
+			child := NewXMLElement(xname)
+			current.AddChild(child)
+			if err := b.buildValue(value.Index(i), child, ""); err != nil {
+				return err
+			}
+		}
+	} else {
+		list := NewXMLElement(xname)
+		current.AddChild(list)
+
+		for i := 0; i < value.Len(); i++ {
+			iname := tag.Get("locationNameList")
+			if iname == "" {
+				iname = "member"
+			}
+
+			child := NewXMLElement(xml.Name{Local: iname})
+			list.AddChild(child)
+			if err := b.buildValue(value.Index(i), child, ""); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+// buildMap adds the value's key/value pairs to the current XMLNode as children nodes. All
+// nested values in the map are converted to XMLNodes also.
+//
+// Error will be returned if it is unable to build the map's values into XMLNodes
+func (b *xmlBuilder) buildMap(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	if value.IsNil() { // don't build omitted maps
+		return nil
+	}
+
+	maproot := NewXMLElement(xml.Name{Local: tag.Get("locationName")})
+	current.AddChild(maproot)
+	current = maproot
+
+	kname, vname := "key", "value"
+	if n := tag.Get("locationNameKey"); n != "" {
+		kname = n
+	}
+	if n := tag.Get("locationNameValue"); n != "" {
+		vname = n
+	}
+
+	// sorting is not required for compliance, but it makes testing easier
+	keys := make([]string, value.Len())
+	for i, k := range value.MapKeys() {
+		keys[i] = k.String()
+	}
+	sort.Strings(keys)
+
+	for _, k := range keys {
+		v := value.MapIndex(reflect.ValueOf(k))
+
+		mapcur := current
+		if tag.Get("flattened") == "" { // add "entry" tag to non-flat maps
+			child := NewXMLElement(xml.Name{Local: "entry"})
+			mapcur.AddChild(child)
+			mapcur = child
+		}
+
+		kchild := NewXMLElement(xml.Name{Local: kname})
+		kchild.Text = k
+		vchild := NewXMLElement(xml.Name{Local: vname})
+		mapcur.AddChild(kchild)
+		mapcur.AddChild(vchild)
+
+		if err := b.buildValue(v, vchild, ""); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// buildScalar will convert the value into a string and append it as a attribute or child
+// of the current XMLNode.
+//
+// The value will be added as an attribute if tag contains a "xmlAttribute" attribute value.
+//
+// Error will be returned if the value type is unsupported.
+func (b *xmlBuilder) buildScalar(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	var str string
+	switch converted := value.Interface().(type) {
+	case string:
+		str = converted
+	case []byte:
+		if !value.IsNil() {
+			str = base64.StdEncoding.EncodeToString(converted)
+		}
+	case bool:
+		str = strconv.FormatBool(converted)
+	case int64:
+		str = strconv.FormatInt(converted, 10)
+	case int:
+		str = strconv.Itoa(converted)
+	case float64:
+		str = strconv.FormatFloat(converted, 'f', -1, 64)
+	case float32:
+		str = strconv.FormatFloat(float64(converted), 'f', -1, 32)
+	case time.Time:
+		const ISO8601UTC = "2006-01-02T15:04:05Z"
+		str = converted.UTC().Format(ISO8601UTC)
+	default:
+		return fmt.Errorf("unsupported value for param %s: %v (%s)",
+			tag.Get("locationName"), value.Interface(), value.Type().Name())
+	}
+
+	xname := xml.Name{Local: tag.Get("locationName")}
+	if tag.Get("xmlAttribute") != "" { // put into current node's attribute list
+		attr := xml.Attr{Name: xname, Value: str}
+		current.Attr = append(current.Attr, attr)
+	} else { // regular text node
+		current.AddChild(&XMLNode{Name: xname, Text: str})
+	}
+	return nil
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/protocol/xml/xmlutil/unmarshal.go

+package xmlutil
+
+import (
+	"encoding/base64"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// UnmarshalXML deserializes an xml.Decoder into the container v. V
+// needs to match the shape of the XML expected to be decoded.
+// If the shape doesn't match unmarshaling will fail.
+func UnmarshalXML(v interface{}, d *xml.Decoder, wrapper string) error {
+	n, _ := XMLToStruct(d, nil)
+	if n.Children != nil {
+		for _, root := range n.Children {
+			for _, c := range root {
+				if wrappedChild, ok := c.Children[wrapper]; ok {
+					c = wrappedChild[0] // pull out wrapped element
+				}
+
+				err := parse(reflect.ValueOf(v), c, "")
+				if err != nil {
+					if err == io.EOF {
+						return nil
+					}
+					return err
+				}
+			}
+		}
+		return nil
+	}
+	return nil
+}
+
+// parse deserializes any value from the XMLNode. The type tag is used to infer the type, or reflect
+// will be used to determine the type from r.
+func parse(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	rtype := r.Type()
+	if rtype.Kind() == reflect.Ptr {
+		rtype = rtype.Elem() // check kind of actual element type
+	}
+
+	t := tag.Get("type")
+	if t == "" {
+		switch rtype.Kind() {
+		case reflect.Struct:
+			t = "structure"
+		case reflect.Slice:
+			t = "list"
+		case reflect.Map:
+			t = "map"
+		}
+	}
+
+	switch t {
+	case "structure":
+		if field, ok := rtype.FieldByName("SDKShapeTraits"); ok {
+			tag = field.Tag
+		}
+		return parseStruct(r, node, tag)
+	case "list":
+		return parseList(r, node, tag)
+	case "map":
+		return parseMap(r, node, tag)
+	default:
+		return parseScalar(r, node, tag)
+	}
+}
+
+// parseStruct deserializes a structure and its fields from an XMLNode. Any nested
+// types in the structure will also be deserialized.
+func parseStruct(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	t := r.Type()
+	if r.Kind() == reflect.Ptr {
+		if r.IsNil() { // create the structure if it's nil
+			s := reflect.New(r.Type().Elem())
+			r.Set(s)
+			r = s
+		}
+
+		r = r.Elem()
+		t = t.Elem()
+	}
+
+	// unwrap any payloads
+	if payload := tag.Get("payload"); payload != "" {
+		field, _ := t.FieldByName(payload)
+		return parseStruct(r.FieldByName(payload), node, field.Tag)
+	}
+
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		if c := field.Name[0:1]; strings.ToLower(c) == c {
+			continue // ignore unexported fields
+		}
+
+		// figure out what this field is called
+		name := field.Name
+		if field.Tag.Get("flattened") != "" && field.Tag.Get("locationNameList") != "" {
+			name = field.Tag.Get("locationNameList")
+		} else if locName := field.Tag.Get("locationName"); locName != "" {
+			name = locName
+		}
+
+		// try to find the field by name in elements
+		elems := node.Children[name]
+
+		if elems == nil { // try to find the field in attributes
+			for _, a := range node.Attr {
+				if name == a.Name.Local {
+					// turn this into a text node for de-serializing
+					elems = []*XMLNode{&XMLNode{Text: a.Value}}
+				}
+			}
+		}
+
+		member := r.FieldByName(field.Name)
+		for _, elem := range elems {
+			err := parse(member, elem, field.Tag)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// parseList deserializes a list of values from an XML node. Each list entry
+// will also be deserialized.
+func parseList(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	t := r.Type()
+
+	if tag.Get("flattened") == "" { // look at all item entries
+		mname := "member"
+		if name := tag.Get("locationNameList"); name != "" {
+			mname = name
+		}
+
+		if Children, ok := node.Children[mname]; ok {
+			if r.IsNil() {
+				r.Set(reflect.MakeSlice(t, len(Children), len(Children)))
+			}
+
+			for i, c := range Children {
+				err := parse(r.Index(i), c, "")
+				if err != nil {
+					return err
+				}
+			}
+		}
+	} else { // flattened list means this is a single element
+		if r.IsNil() {
+			r.Set(reflect.MakeSlice(t, 0, 0))
+		}
+
+		childR := reflect.Zero(t.Elem())
+		r.Set(reflect.Append(r, childR))
+		err := parse(r.Index(r.Len()-1), node, "")
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// parseMap deserializes a map from an XMLNode. The direct children of the XMLNode
+// will also be deserialized as map entries.
+func parseMap(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	t := r.Type()
+	if r.Kind() == reflect.Ptr {
+		t = t.Elem()
+		if r.IsNil() {
+			r.Set(reflect.New(t))
+			r.Elem().Set(reflect.MakeMap(t))
+		}
+
+		r = r.Elem()
+	}
+
+	if tag.Get("flattened") == "" { // look at all child entries
+		for _, entry := range node.Children["entry"] {
+			parseMapEntry(r, entry, tag)
+		}
+	} else { // this element is itself an entry
+		parseMapEntry(r, node, tag)
+	}
+
+	return nil
+}
+
+// parseMapEntry deserializes a map entry from a XML node.
+func parseMapEntry(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	kname, vname := "key", "value"
+	if n := tag.Get("locationNameKey"); n != "" {
+		kname = n
+	}
+	if n := tag.Get("locationNameValue"); n != "" {
+		vname = n
+	}
+
+	keys, ok := node.Children[kname]
+	values := node.Children[vname]
+	if ok {
+		for i, key := range keys {
+			keyR := reflect.ValueOf(key.Text)
+			value := values[i]
+			valueR := reflect.New(r.Type().Elem()).Elem()
+
+			parse(valueR, value, "")
+			r.SetMapIndex(keyR, valueR)
+		}
+	}
+	return nil
+}
+
+// parseScaller deserializes an XMLNode value into a concrete type based on the
+// interface type of r.
+//
+// Error is returned if the deserialization fails due to invalid type conversion,
+// or unsupported interface type.
+func parseScalar(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	switch r.Interface().(type) {
+	case *string:
+		r.Set(reflect.ValueOf(&node.Text))
+		return nil
+	case []byte:
+		b, err := base64.StdEncoding.DecodeString(node.Text)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(b))
+	case *bool:
+		v, err := strconv.ParseBool(node.Text)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&v))
+	case *int64:
+		v, err := strconv.ParseInt(node.Text, 10, 64)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&v))
+	case *float64:
+		v, err := strconv.ParseFloat(node.Text, 64)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&v))
+	case *time.Time:
+		const ISO8601UTC = "2006-01-02T15:04:05Z"
+		t, err := time.Parse(ISO8601UTC, node.Text)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&t))
+	default:
+		return fmt.Errorf("unsupported value: %v (%s)", r.Interface(), r.Type())
+	}
+	return nil
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/protocol/xml/xmlutil/xml_to_struct.go

+package xmlutil
+
+import (
+	"encoding/xml"
+	"io"
+	"sort"
+)
+
+// A XMLNode contains the values to be encoded or decoded.
+type XMLNode struct {
+	Name     xml.Name              `json:",omitempty"`
+	Children map[string][]*XMLNode `json:",omitempty"`
+	Text     string                `json:",omitempty"`
+	Attr     []xml.Attr            `json:",omitempty"`
+}
+
+// NewXMLElement returns a pointer to a new XMLNode initialized to default values.
+func NewXMLElement(name xml.Name) *XMLNode {
+	return &XMLNode{
+		Name:     name,
+		Children: map[string][]*XMLNode{},
+		Attr:     []xml.Attr{},
+	}
+}
+
+// AddChild adds child to the XMLNode.
+func (n *XMLNode) AddChild(child *XMLNode) {
+	if _, ok := n.Children[child.Name.Local]; !ok {
+		n.Children[child.Name.Local] = []*XMLNode{}
+	}
+	n.Children[child.Name.Local] = append(n.Children[child.Name.Local], child)
+}
+
+// XMLToStruct converts a xml.Decoder stream to XMLNode with nested values.
+func XMLToStruct(d *xml.Decoder, s *xml.StartElement) (*XMLNode, error) {
+	out := &XMLNode{}
+	for {
+		tok, err := d.Token()
+		if tok == nil || err == io.EOF {
+			break
+		}
+		if err != nil {
+			return out, err
+		}
+
+		switch typed := tok.(type) {
+		case xml.CharData:
+			out.Text = string(typed.Copy())
+		case xml.StartElement:
+			el := typed.Copy()
+			out.Attr = el.Attr
+			if out.Children == nil {
+				out.Children = map[string][]*XMLNode{}
+			}
+
+			name := typed.Name.Local
+			slice := out.Children[name]
+			if slice == nil {
+				slice = []*XMLNode{}
+			}
+			node, e := XMLToStruct(d, &el)
+			if e != nil {
+				return out, e
+			}
+			node.Name = typed.Name
+			slice = append(slice, node)
+			out.Children[name] = slice
+		case xml.EndElement:
+			if s != nil && s.Name.Local == typed.Name.Local { // matching end token
+				return out, nil
+			}
+		}
+	}
+	return out, nil
+}
+
+// StructToXML writes an XMLNode to a xml.Encoder as tokens.
+func StructToXML(e *xml.Encoder, node *XMLNode, sorted bool) error {
+	e.EncodeToken(xml.StartElement{Name: node.Name, Attr: node.Attr})
+
+	if node.Text != "" {
+		e.EncodeToken(xml.CharData([]byte(node.Text)))
+	} else if sorted {
+		sortedNames := []string{}
+		for k := range node.Children {
+			sortedNames = append(sortedNames, k)
+		}
+		sort.Strings(sortedNames)
+
+		for _, k := range sortedNames {
+			for _, v := range node.Children[k] {
+				StructToXML(e, v, sorted)
+			}
+		}
+	} else {
+		for _, c := range node.Children {
+			for _, v := range c {
+				StructToXML(e, v, sorted)
+			}
+		}
+	}
+
+	e.EncodeToken(xml.EndElement{Name: node.Name})
+	return e.Flush()
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/signer/v4/functional_test.go

+// +build !integration
+
+package v4_test
+
+import (
+	"net/url"
+	"testing"
+	"time"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+	"github.com/awslabs/aws-sdk-go/internal/test/unit"
+	"github.com/awslabs/aws-sdk-go/service/s3"
+	"github.com/stretchr/testify/assert"
+)
+
+var _ = unit.Imported
+
+func TestPresignHandler(t *testing.T) {
+	svc := s3.New(nil)
+	req, _ := svc.PutObjectRequest(&s3.PutObjectInput{
+		Bucket:             aws.String("bucket"),
+		Key:                aws.String("key"),
+		ContentDisposition: aws.String("a+b c$d"),
+		ACL:                aws.String("public-read"),
+	})
+	req.Time = time.Unix(0, 0)
+	urlstr, err := req.Presign(5 * time.Minute)
+
+	assert.NoError(t, err)
+
+	expectedDate := "19700101T000000Z"
+	expectedHeaders := "host;x-amz-acl"
+	expectedSig := "7edcb4e3a1bf12f4989018d75acbe3a7f03df24bd6f3112602d59fc551f0e4e2"
+	expectedCred := "AKID/19700101/mock-region/s3/aws4_request"
+
+	u, _ := url.Parse(urlstr)
+	urlQ := u.Query()
+	assert.Equal(t, expectedSig, urlQ.Get("X-Amz-Signature"))
+	assert.Equal(t, expectedCred, urlQ.Get("X-Amz-Credential"))
+	assert.Equal(t, expectedHeaders, urlQ.Get("X-Amz-SignedHeaders"))
+	assert.Equal(t, expectedDate, urlQ.Get("X-Amz-Date"))
+	assert.Equal(t, "300", urlQ.Get("X-Amz-Expires"))
+
+	assert.NotContains(t, urlstr, "+") // + encoded as %20
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/signer/v4/v4.go

+package v4
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/awslabs/aws-sdk-go/aws/credentials"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+)
+
+const (
+	authHeaderPrefix = "AWS4-HMAC-SHA256"
+	timeFormat       = "20060102T150405Z"
+	shortTimeFormat  = "20060102"
+)
+
+var ignoredHeaders = map[string]bool{
+	"Authorization":  true,
+	"Content-Type":   true,
+	"Content-Length": true,
+	"User-Agent":     true,
+}
+
+type signer struct {
+	Request         *http.Request
+	Time            time.Time
+	ExpireTime      time.Duration
+	ServiceName     string
+	Region          string
+	AccessKeyID     string
+	SecretAccessKey string
+	SessionToken    string
+	Query           url.Values
+	Body            io.ReadSeeker
+	Debug           uint
+	Logger          io.Writer
+
+	isPresign          bool
+	formattedTime      string
+	formattedShortTime string
+
+	signedHeaders    string
+	canonicalHeaders string
+	canonicalString  string
+	credentialString string
+	stringToSign     string
+	signature        string
+	authorization    string
+}
+
+// Sign requests with signature version 4.
+//
+// Will sign the requests with the service config's Credentials object
+// Signing is skipped if the credentials is the credentials.AnonymousCredentials
+// object.
+func Sign(req *aws.Request) {
+	// If the request does not need to be signed ignore the signing of the
+	// request if the AnonymousCredentials object is used.
+	if req.Service.Config.Credentials == credentials.AnonymousCredentials {
+		return
+	}
+	creds, err := req.Service.Config.Credentials.Get()
+	if err != nil {
+		req.Error = err
+		return
+	}
+
+	region := req.Service.SigningRegion
+	if region == "" {
+		region = req.Service.Config.Region
+	}
+
+	name := req.Service.SigningName
+	if name == "" {
+		name = req.Service.ServiceName
+	}
+
+	s := signer{
+		Request:         req.HTTPRequest,
+		Time:            req.Time,
+		ExpireTime:      req.ExpireTime,
+		Query:           req.HTTPRequest.URL.Query(),
+		Body:            req.Body,
+		ServiceName:     name,
+		Region:          region,
+		AccessKeyID:     creds.AccessKeyID,
+		SecretAccessKey: creds.SecretAccessKey,
+		SessionToken:    creds.SessionToken,
+		Debug:           req.Service.Config.LogLevel,
+		Logger:          req.Service.Config.Logger,
+	}
+	s.sign()
+	return
+}
+
+func (v4 *signer) sign() {
+	if v4.ExpireTime != 0 {
+		v4.isPresign = true
+	}
+
+	if v4.isPresign {
+		v4.Query.Set("X-Amz-Algorithm", authHeaderPrefix)
+		if v4.SessionToken != "" {
+			v4.Query.Set("X-Amz-Security-Token", v4.SessionToken)
+		} else {
+			v4.Query.Del("X-Amz-Security-Token")
+		}
+	} else if v4.SessionToken != "" {
+		v4.Request.Header.Set("X-Amz-Security-Token", v4.SessionToken)
+	}
+
+	v4.build()
+
+	if v4.Debug > 0 {
+		out := v4.Logger
+		fmt.Fprintf(out, "---[ CANONICAL STRING  ]-----------------------------\n")
+		fmt.Fprintln(out, v4.canonicalString)
+		fmt.Fprintf(out, "---[ STRING TO SIGN ]--------------------------------\n")
+		fmt.Fprintln(out, v4.stringToSign)
+		if v4.isPresign {
+			fmt.Fprintf(out, "---[ SIGNED URL ]--------------------------------\n")
+			fmt.Fprintln(out, v4.Request.URL)
+		}
+		fmt.Fprintf(out, "-----------------------------------------------------\n")
+	}
+}
+
+func (v4 *signer) build() {
+	v4.buildTime()             // no depends
+	v4.buildCredentialString() // no depends
+	if v4.isPresign {
+		v4.buildQuery() // no depends
+	}
+	v4.buildCanonicalHeaders() // depends on cred string
+	v4.buildCanonicalString()  // depends on canon headers / signed headers
+	v4.buildStringToSign()     // depends on canon string
+	v4.buildSignature()        // depends on string to sign
+
+	if v4.isPresign {
+		v4.Request.URL.RawQuery += "&X-Amz-Signature=" + v4.signature
+	} else {
+		parts := []string{
+			authHeaderPrefix + " Credential=" + v4.AccessKeyID + "/" + v4.credentialString,
+			"SignedHeaders=" + v4.signedHeaders,
+			"Signature=" + v4.signature,
+		}
+		v4.Request.Header.Set("Authorization", strings.Join(parts, ", "))
+	}
+}
+
+func (v4 *signer) buildTime() {
+	v4.formattedTime = v4.Time.UTC().Format(timeFormat)
+	v4.formattedShortTime = v4.Time.UTC().Format(shortTimeFormat)
+
+	if v4.isPresign {
+		duration := int64(v4.ExpireTime / time.Second)
+		v4.Query.Set("X-Amz-Date", v4.formattedTime)
+		v4.Query.Set("X-Amz-Expires", strconv.FormatInt(duration, 10))
+	} else {
+		v4.Request.Header.Set("X-Amz-Date", v4.formattedTime)
+	}
+}
+
+func (v4 *signer) buildCredentialString() {
+	v4.credentialString = strings.Join([]string{
+		v4.formattedShortTime,
+		v4.Region,
+		v4.ServiceName,
+		"aws4_request",
+	}, "/")
+
+	if v4.isPresign {
+		v4.Query.Set("X-Amz-Credential", v4.AccessKeyID+"/"+v4.credentialString)
+	}
+}
+
+func (v4 *signer) buildQuery() {
+	for k, h := range v4.Request.Header {
+		if strings.HasPrefix(http.CanonicalHeaderKey(k), "X-Amz-") {
+			continue // never hoist x-amz-* headers, they must be signed
+		}
+		if _, ok := ignoredHeaders[http.CanonicalHeaderKey(k)]; ok {
+			continue // never hoist ignored headers
+		}
+
+		v4.Request.Header.Del(k)
+		v4.Query.Del(k)
+		for _, v := range h {
+			v4.Query.Add(k, v)
+		}
+	}
+}
+
+func (v4 *signer) buildCanonicalHeaders() {
+	var headers []string
+	headers = append(headers, "host")
+	for k := range v4.Request.Header {
+		if _, ok := ignoredHeaders[http.CanonicalHeaderKey(k)]; ok {
+			continue // ignored header
+		}
+		headers = append(headers, strings.ToLower(k))
+	}
+	sort.Strings(headers)
+
+	v4.signedHeaders = strings.Join(headers, ";")
+
+	if v4.isPresign {
+		v4.Query.Set("X-Amz-SignedHeaders", v4.signedHeaders)
+	}
+
+	headerValues := make([]string, len(headers))
+	for i, k := range headers {
+		if k == "host" {
+			headerValues[i] = "host:" + v4.Request.URL.Host
+		} else {
+			headerValues[i] = k + ":" +
+				strings.Join(v4.Request.Header[http.CanonicalHeaderKey(k)], ",")
+		}
+	}
+
+	v4.canonicalHeaders = strings.Join(headerValues, "\n")
+}
+
+func (v4 *signer) buildCanonicalString() {
+	v4.Request.URL.RawQuery = strings.Replace(v4.Query.Encode(), "+", "%20", -1)
+	uri := v4.Request.URL.Opaque
+	if uri != "" {
+		uri = "/" + strings.Join(strings.Split(uri, "/")[3:], "/")
+	} else {
+		uri = v4.Request.URL.Path
+	}
+	if uri == "" {
+		uri = "/"
+	}
+
+	v4.canonicalString = strings.Join([]string{
+		v4.Request.Method,
+		uri,
+		v4.Request.URL.RawQuery,
+		v4.canonicalHeaders + "\n",
+		v4.signedHeaders,
+		v4.bodyDigest(),
+	}, "\n")
+}
+
+func (v4 *signer) buildStringToSign() {
+	v4.stringToSign = strings.Join([]string{
+		authHeaderPrefix,
+		v4.formattedTime,
+		v4.credentialString,
+		hex.EncodeToString(makeSha256([]byte(v4.canonicalString))),
+	}, "\n")
+}
+
+func (v4 *signer) buildSignature() {
+	secret := v4.SecretAccessKey
+	date := makeHmac([]byte("AWS4"+secret), []byte(v4.formattedShortTime))
+	region := makeHmac(date, []byte(v4.Region))
+	service := makeHmac(region, []byte(v4.ServiceName))
+	credentials := makeHmac(service, []byte("aws4_request"))
+	signature := makeHmac(credentials, []byte(v4.stringToSign))
+	v4.signature = hex.EncodeToString(signature)
+}
+
+func (v4 *signer) bodyDigest() string {
+	hash := v4.Request.Header.Get("X-Amz-Content-Sha256")
+	if hash == "" {
+		if v4.isPresign && v4.ServiceName == "s3" {
+			hash = "UNSIGNED-PAYLOAD"
+		} else if v4.Body == nil {
+			hash = hex.EncodeToString(makeSha256([]byte{}))
+		} else {
+			hash = hex.EncodeToString(makeSha256Reader(v4.Body))
+		}
+		v4.Request.Header.Add("X-Amz-Content-Sha256", hash)
+	}
+	return hash
+}
+
+func makeHmac(key []byte, data []byte) []byte {
+	hash := hmac.New(sha256.New, key)
+	hash.Write(data)
+	return hash.Sum(nil)
+}
+
+func makeSha256(data []byte) []byte {
+	hash := sha256.New()
+	hash.Write(data)
+	return hash.Sum(nil)
+}
+
+func makeSha256Reader(reader io.ReadSeeker) []byte {
+	packet := make([]byte, 4096)
+	hash := sha256.New()
+
+	start, _ := reader.Seek(0, 1)
+	defer reader.Seek(start, 0)
+
+	for {
+		n, err := reader.Read(packet)
+		if n > 0 {
+			hash.Write(packet[0:n])
+		}
+		if err == io.EOF || n == 0 {
+			break
+		}
+	}
+
+	return hash.Sum(nil)
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/internal/signer/v4/v4_test.go

+package v4
+
+import (
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+	"github.com/awslabs/aws-sdk-go/aws/credentials"
+	"github.com/stretchr/testify/assert"
+)
+
+func buildSigner(serviceName string, region string, signTime time.Time, expireTime time.Duration, body string) signer {
+	endpoint := "https://" + serviceName + "." + region + ".amazonaws.com"
+	reader := strings.NewReader(body)
+	req, _ := http.NewRequest("POST", endpoint, reader)
+	req.URL.Opaque = "//example.org/bucket/key-._~,!@#$%^&*()"
+	req.Header.Add("X-Amz-Target", "prefix.Operation")
+	req.Header.Add("Content-Type", "application/x-amz-json-1.0")
+	req.Header.Add("Content-Length", string(len(body)))
+	req.Header.Add("X-Amz-Meta-Other-Header", "some-value=!@#$%^&* (+)")
+
+	return signer{
+		Request:         req,
+		Time:            signTime,
+		ExpireTime:      expireTime,
+		Query:           req.URL.Query(),
+		Body:            reader,
+		ServiceName:     serviceName,
+		Region:          region,
+		AccessKeyID:     "AKID",
+		SecretAccessKey: "SECRET",
+		SessionToken:    "SESSION",
+	}
+}
+
+func removeWS(text string) string {
+	text = strings.Replace(text, " ", "", -1)
+	text = strings.Replace(text, "\n", "", -1)
+	text = strings.Replace(text, "\t", "", -1)
+	return text
+}
+
+func assertEqual(t *testing.T, expected, given string) {
+	if removeWS(expected) != removeWS(given) {
+		t.Errorf("\nExpected: %s\nGiven:    %s", expected, given)
+	}
+}
+
+func TestPresignRequest(t *testing.T) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Unix(0, 0), 300*time.Second, "{}")
+	signer.sign()
+
+	expectedDate := "19700101T000000Z"
+	expectedHeaders := "host;x-amz-meta-other-header;x-amz-target"
+	expectedSig := "4c86bacebb78e458e8e898e93547513079d67ab95d3d5c02236889e21ea0df2b"
+	expectedCred := "AKID/19700101/us-east-1/dynamodb/aws4_request"
+
+	q := signer.Request.URL.Query()
+	assert.Equal(t, expectedSig, q.Get("X-Amz-Signature"))
+	assert.Equal(t, expectedCred, q.Get("X-Amz-Credential"))
+	assert.Equal(t, expectedHeaders, q.Get("X-Amz-SignedHeaders"))
+	assert.Equal(t, expectedDate, q.Get("X-Amz-Date"))
+}
+
+func TestSignRequest(t *testing.T) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Unix(0, 0), 0, "{}")
+	signer.sign()
+
+	expectedDate := "19700101T000000Z"
+	expectedSig := "AWS4-HMAC-SHA256 Credential=AKID/19700101/us-east-1/dynamodb/aws4_request, SignedHeaders=host;x-amz-date;x-amz-meta-other-header;x-amz-security-token;x-amz-target, Signature=d4df864b291252d2c9206be75963db54db09ca70265622cc787cbe50ca0efcc8"
+
+	q := signer.Request.Header
+	assert.Equal(t, expectedSig, q.Get("Authorization"))
+	assert.Equal(t, expectedDate, q.Get("X-Amz-Date"))
+}
+
+func TestSignEmptyBody(t *testing.T) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Now(), 0, "")
+	signer.Body = nil
+	signer.sign()
+	hash := signer.Request.Header.Get("X-Amz-Content-Sha256")
+	assert.Equal(t, "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", hash)
+}
+
+func TestSignBody(t *testing.T) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Now(), 0, "hello")
+	signer.sign()
+	hash := signer.Request.Header.Get("X-Amz-Content-Sha256")
+	assert.Equal(t, "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824", hash)
+}
+
+func TestSignSeekedBody(t *testing.T) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Now(), 0, "   hello")
+	signer.Body.Read(make([]byte, 3)) // consume first 3 bytes so body is now "hello"
+	signer.sign()
+	hash := signer.Request.Header.Get("X-Amz-Content-Sha256")
+	assert.Equal(t, "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824", hash)
+
+	start, _ := signer.Body.Seek(0, 1)
+	assert.Equal(t, int64(3), start)
+}
+
+func TestPresignEmptyBodyS3(t *testing.T) {
+	signer := buildSigner("s3", "us-east-1", time.Now(), 5*time.Minute, "hello")
+	signer.sign()
+	hash := signer.Request.Header.Get("X-Amz-Content-Sha256")
+	assert.Equal(t, "UNSIGNED-PAYLOAD", hash)
+}
+
+func TestSignPrecomputedBodyChecksum(t *testing.T) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Now(), 0, "hello")
+	signer.Request.Header.Set("X-Amz-Content-Sha256", "PRECOMPUTED")
+	signer.sign()
+	hash := signer.Request.Header.Get("X-Amz-Content-Sha256")
+	assert.Equal(t, "PRECOMPUTED", hash)
+}
+
+func TestAnonymousCredentials(t *testing.T) {
+	r := aws.NewRequest(
+		aws.NewService(&aws.Config{Credentials: credentials.AnonymousCredentials}),
+		&aws.Operation{
+			Name:       "BatchGetItem",
+			HTTPMethod: "POST",
+			HTTPPath:   "/",
+		},
+		nil,
+		nil,
+	)
+	Sign(r)
+
+	urlQ := r.HTTPRequest.URL.Query()
+	assert.Empty(t, urlQ.Get("X-Amz-Signature"))
+	assert.Empty(t, urlQ.Get("X-Amz-Credential"))
+	assert.Empty(t, urlQ.Get("X-Amz-SignedHeaders"))
+	assert.Empty(t, urlQ.Get("X-Amz-Date"))
+
+	hQ := r.HTTPRequest.Header
+	assert.Empty(t, hQ.Get("Authorization"))
+	assert.Empty(t, hQ.Get("X-Amz-Date"))
+}
+
+func BenchmarkPresignRequest(b *testing.B) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Now(), 300*time.Second, "{}")
+	for i := 0; i < b.N; i++ {
+		signer.sign()
+	}
+}
+
+func BenchmarkSignRequest(b *testing.B) {
+	signer := buildSigner("dynamodb", "us-east-1", time.Now(), 0, "{}")
+	for i := 0; i < b.N; i++ {
+		signer.sign()
+	}
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/service/ec2/customizations.go

+package ec2
+
+import (
+	"time"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+	"github.com/awslabs/aws-sdk-go/aws/awsutil"
+)
+
+func init() {
+	initRequest = func(r *aws.Request) {
+		if r.Operation == opCopySnapshot { // fill the PresignedURL parameter
+			r.Handlers.Build.PushFront(fillPresignedURL)
+		}
+	}
+}
+
+func fillPresignedURL(r *aws.Request) {
+	if !r.ParamsFilled() {
+		return
+	}
+
+	params := r.Params.(*CopySnapshotInput)
+
+	// Stop if PresignedURL/DestinationRegion is set
+	if params.PresignedURL != nil || params.DestinationRegion != nil {
+		return
+	}
+
+	// First generate a copy of parameters
+	r.Params = awsutil.CopyOf(r.Params)
+	params = r.Params.(*CopySnapshotInput)
+
+	// Set destination region. Avoids infinite handler loop.
+	// Also needed to sign sub-request.
+	params.DestinationRegion = &r.Service.Config.Region
+
+	// Create a new client pointing at source region.
+	// We will use this to presign the CopySnapshot request against
+	// the source region
+	config := r.Service.Config.Copy()
+
+	config.Endpoint = ""
+	config.Region = *params.SourceRegion
+	client := New(&config)
+
+	// Presign a CopySnapshot request with modified params
+	req, _ := client.CopySnapshotRequest(params)
+	url, err := req.Presign(300 * time.Second) // 5 minutes should be enough.
+
+	if err != nil { // bubble error back up to original request
+		r.Error = err
+	}
+
+	// We have our URL, set it on params
+	params.PresignedURL = &url
+}

Godeps/_workspace/src/github.com/awslabs/aws-sdk-go/service/ec2/customizations_test.go

+// +build !integration
+
+package ec2_test
+
+import (
+	"io/ioutil"
+	"net/url"
+	"testing"
+
+	"github.com/awslabs/aws-sdk-go/aws"
+	"github.com/awslabs/aws-sdk-go/internal/test/unit"
+	"github.com/awslabs/aws-sdk-go/service/ec2"
+	"github.com/stretchr/testify/assert"
+)
+
+var _ = unit.Imported
+
+func TestCopySnapshotPresignedURL(t *testing.T) {
+	svc := ec2.New(&aws.Config{Region: "us-west-2"})
+
+	assert.NotPanics(t, func() {
+		// Doesn't panic on nil input
+		req, _ := svc.CopySnapshotRequest(nil)
+		req.Sign()
+	})
+
+	req, _ := svc.CopySnapshotRequest(&ec2.CopySnapshotInput{
+		SourceRegion:     aws.String("us-west-1"),
+		SourceSnapshotID: aws.String("snap-id"),
+	})
+	req.Sign()
+
+	b, _ := ioutil.ReadAll(req.HTTPRequest.Body)
+	q, _ := url.ParseQuery(string(b))
+	url, _ := url.QueryUnescape(q.Get("PresignedUrl"))
+	assert.Equal(t, "us-west-2", q.Get("DestinationRegion"))
+	assert.Regexp(t, `^https://ec2\.us-west-1\.amazon.+&DestinationRegion=us-west-2`, url)
+}