Move ssh related functions into ssh.go.

test/e2e_node/remote/BUILD

@@ -12,7 +12,10 @@ load(
 
 go_library(
     name = "go_default_library",
-    srcs = ["remote.go"],
+    srcs = [
+        "remote.go",
+        "ssh.go",
+    ],
     tags = ["automanaged"],
     deps = [
         "//pkg/util/errors:go_default_library",

test/e2e_node/remote/remote.go

@@ -22,10 +22,8 @@ import (
 	"io/ioutil"
 	"os"
 	"os/exec"
-	"os/user"
 	"path/filepath"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/golang/glog"
@@ -33,13 +31,9 @@ import (
 	"k8s.io/kubernetes/test/e2e_node/builder"
 )
 
-var sshOptions = flag.String("ssh-options", "", "Commandline options passed to ssh.")
-var sshEnv = flag.String("ssh-env", "", "Use predefined ssh options for environment.  Options: gce")
 var testTimeoutSeconds = flag.Duration("test-timeout", 45*time.Minute, "How long (in golang duration format) to wait for ginkgo tests to complete.")
 var resultsDir = flag.String("results-dir", "/tmp/", "Directory to scp test results to.")
 
-var sshOptionsMap map[string]string
-
 const (
 	archiveName  = "e2e_node_test.tar.gz"
 	CNIRelease   = "07a8a28637e97b22eb8dfe710eeae1344f69d16e"
@@ -48,36 +42,6 @@ const (
 
 var CNIURL = fmt.Sprintf("https://storage.googleapis.com/kubernetes-release/network-plugins/cni-%s.tar.gz", CNIRelease)
 
-var hostnameIpOverrides = struct {
-	sync.RWMutex
-	m map[string]string
-}{m: make(map[string]string)}
-
-func init() {
-	usr, err := user.Current()
-	if err != nil {
-		glog.Fatal(err)
-	}
-	sshOptionsMap = map[string]string{
-		"gce": fmt.Sprintf("-i %s/.ssh/google_compute_engine -o UserKnownHostsFile=/dev/null -o IdentitiesOnly=yes -o CheckHostIP=no -o StrictHostKeyChecking=no -o ServerAliveInterval=30 -o LogLevel=ERROR", usr.HomeDir),
-	}
-}
-
-func AddHostnameIp(hostname, ip string) {
-	hostnameIpOverrides.Lock()
-	defer hostnameIpOverrides.Unlock()
-	hostnameIpOverrides.m[hostname] = ip
-}
-
-func GetHostnameOrIp(hostname string) string {
-	hostnameIpOverrides.RLock()
-	defer hostnameIpOverrides.RUnlock()
-	if ip, found := hostnameIpOverrides.m[hostname]; found {
-		return ip
-	}
-	return hostname
-}
-
 // CreateTestArchive builds the local source and creates a tar archive e2e_node_test.tar.gz containing
 // the binaries k8s required for node e2e tests
 func CreateTestArchive() (string, error) {
@@ -361,35 +325,3 @@ func WriteLog(host, filename, content string) error {
 	_, err = f.WriteString(content)
 	return err
 }
-
-// getSSHCommand handles proper quoting so that multiple commands are executed in the same shell over ssh
-func getSSHCommand(sep string, args ...string) string {
-	return fmt.Sprintf("'%s'", strings.Join(args, sep))
-}
-
-// SSH executes ssh command with runSSHCommand as root. The `sudo` makes sure that all commands
-// are executed by root, so that there won't be permission mismatch between different commands.
-func SSH(host string, cmd ...string) (string, error) {
-	return runSSHCommand("ssh", append([]string{GetHostnameOrIp(host), "--", "sudo"}, cmd...)...)
-}
-
-// SSHNoSudo executes ssh command with runSSHCommand as normal user. Sometimes we need this,
-// for example creating a directory that we'll copy files there with scp.
-func SSHNoSudo(host string, cmd ...string) (string, error) {
-	return runSSHCommand("ssh", append([]string{GetHostnameOrIp(host), "--"}, cmd...)...)
-}
-
-// runSSHCommand executes the ssh or scp command, adding the flag provided --ssh-options
-func runSSHCommand(cmd string, args ...string) (string, error) {
-	if env, found := sshOptionsMap[*sshEnv]; found {
-		args = append(strings.Split(env, " "), args...)
-	}
-	if *sshOptions != "" {
-		args = append(strings.Split(*sshOptions, " "), args...)
-	}
-	output, err := exec.Command(cmd, args...).CombinedOutput()
-	if err != nil {
-		return string(output), fmt.Errorf("command [%s %s] failed with error: %v", cmd, strings.Join(args, " "), err)
-	}
-	return string(output), nil
-}

test/e2e_node/remote/ssh.go

+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package remote
+
+import (
+	"flag"
+	"fmt"
+	"os/exec"
+	"os/user"
+	"strings"
+	"sync"
+
+	"github.com/golang/glog"
+)
+
+var sshOptions = flag.String("ssh-options", "", "Commandline options passed to ssh.")
+var sshEnv = flag.String("ssh-env", "", "Use predefined ssh options for environment.  Options: gce")
+
+var sshOptionsMap map[string]string
+
+func init() {
+	usr, err := user.Current()
+	if err != nil {
+		glog.Fatal(err)
+	}
+	sshOptionsMap = map[string]string{
+		"gce": fmt.Sprintf("-i %s/.ssh/google_compute_engine -o UserKnownHostsFile=/dev/null -o IdentitiesOnly=yes -o CheckHostIP=no -o StrictHostKeyChecking=no -o ServerAliveInterval=30 -o LogLevel=ERROR", usr.HomeDir),
+	}
+}
+
+var hostnameIpOverrides = struct {
+	sync.RWMutex
+	m map[string]string
+}{m: make(map[string]string)}
+
+func AddHostnameIp(hostname, ip string) {
+	hostnameIpOverrides.Lock()
+	defer hostnameIpOverrides.Unlock()
+	hostnameIpOverrides.m[hostname] = ip
+}
+
+func GetHostnameOrIp(hostname string) string {
+	hostnameIpOverrides.RLock()
+	defer hostnameIpOverrides.RUnlock()
+	if ip, found := hostnameIpOverrides.m[hostname]; found {
+		return ip
+	}
+	return hostname
+}
+
+// getSSHCommand handles proper quoting so that multiple commands are executed in the same shell over ssh
+func getSSHCommand(sep string, args ...string) string {
+	return fmt.Sprintf("'%s'", strings.Join(args, sep))
+}
+
+// SSH executes ssh command with runSSHCommand as root. The `sudo` makes sure that all commands
+// are executed by root, so that there won't be permission mismatch between different commands.
+func SSH(host string, cmd ...string) (string, error) {
+	return runSSHCommand("ssh", append([]string{GetHostnameOrIp(host), "--", "sudo"}, cmd...)...)
+}
+
+// SSHNoSudo executes ssh command with runSSHCommand as normal user. Sometimes we need this,
+// for example creating a directory that we'll copy files there with scp.
+func SSHNoSudo(host string, cmd ...string) (string, error) {
+	return runSSHCommand("ssh", append([]string{GetHostnameOrIp(host), "--"}, cmd...)...)
+}
+
+// runSSHCommand executes the ssh or scp command, adding the flag provided --ssh-options
+func runSSHCommand(cmd string, args ...string) (string, error) {
+	if env, found := sshOptionsMap[*sshEnv]; found {
+		args = append(strings.Split(env, " "), args...)
+	}
+	if *sshOptions != "" {
+		args = append(strings.Split(*sshOptions, " "), args...)
+	}
+	output, err := exec.Command(cmd, args...).CombinedOutput()
+	if err != nil {
+		return string(output), fmt.Errorf("command [%s %s] failed with error: %v", cmd, strings.Join(args, " "), err)
+	}
+	return string(output), nil
+}