add SetMaxResource for Resource

pkg/scheduler/algorithm/predicates/predicates.go

@@ -668,29 +668,7 @@ func GetResourceRequest(pod *v1.Pod) *schedulercache.Resource {
 
 	// take max_resource(sum_pod, any_init_container)
 	for _, container := range pod.Spec.InitContainers {
-		for rName, rQuantity := range container.Resources.Requests {
-			switch rName {
-			case v1.ResourceMemory:
-				if mem := rQuantity.Value(); mem > result.Memory {
-					result.Memory = mem
-				}
-			case v1.ResourceEphemeralStorage:
-				if ephemeralStorage := rQuantity.Value(); ephemeralStorage > result.EphemeralStorage {
-					result.EphemeralStorage = ephemeralStorage
-				}
-			case v1.ResourceCPU:
-				if cpu := rQuantity.MilliValue(); cpu > result.MilliCPU {
-					result.MilliCPU = cpu
-				}
-			default:
-				if v1helper.IsScalarResourceName(rName) {
-					value := rQuantity.Value()
-					if value > result.ScalarResources[rName] {
-						result.SetScalar(rName, value)
-					}
-				}
-			}
-		}
+		result.SetMaxResource(container.Resources.Requests)
 	}
 
 	return result

pkg/scheduler/algorithm/priorities/resource_limits.go

@@ -20,7 +20,6 @@ import (
 	"fmt"
 
 	"k8s.io/api/core/v1"
-	v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
 	schedulerapi "k8s.io/kubernetes/pkg/scheduler/api"
 	"k8s.io/kubernetes/pkg/scheduler/schedulercache"
 
@@ -93,31 +92,7 @@ func getResourceLimits(pod *v1.Pod) *schedulercache.Resource {
 
 	// take max_resource(sum_pod, any_init_container)
 	for _, container := range pod.Spec.InitContainers {
-		for rName, rQuantity := range container.Resources.Limits {
-			switch rName {
-			case v1.ResourceMemory:
-				if mem := rQuantity.Value(); mem > result.Memory {
-					result.Memory = mem
-				}
-			case v1.ResourceCPU:
-				if cpu := rQuantity.MilliValue(); cpu > result.MilliCPU {
-					result.MilliCPU = cpu
-				}
-				// keeping these resources though score computation in other priority functions and in this
-				// are only computed based on cpu and memory only.
-			case v1.ResourceEphemeralStorage:
-				if ephemeralStorage := rQuantity.Value(); ephemeralStorage > result.EphemeralStorage {
-					result.EphemeralStorage = ephemeralStorage
-				}
-			default:
-				if v1helper.IsScalarResourceName(rName) {
-					value := rQuantity.Value()
-					if value > result.ScalarResources[rName] {
-						result.SetScalar(rName, value)
-					}
-				}
-			}
-		}
+		result.SetMaxResource(container.Resources.Limits)
 	}
 
 	return result

pkg/scheduler/schedulercache/node_info.go

@@ -202,6 +202,37 @@ func (r *Resource) SetScalar(name v1.ResourceName, quantity int64) {
 	r.ScalarResources[name] = quantity
 }
 
+// SetMaxResource compares with ResourceList and takes max value for each Resource.
+func (r *Resource) SetMaxResource(rl v1.ResourceList) {
+	if r == nil {
+		return
+	}
+
+	for rName, rQuantity := range rl {
+		switch rName {
+		case v1.ResourceMemory:
+			if mem := rQuantity.Value(); mem > r.Memory {
+				r.Memory = mem
+			}
+		case v1.ResourceCPU:
+			if cpu := rQuantity.MilliValue(); cpu > r.MilliCPU {
+				r.MilliCPU = cpu
+			}
+		case v1.ResourceEphemeralStorage:
+			if ephemeralStorage := rQuantity.Value(); ephemeralStorage > r.EphemeralStorage {
+				r.EphemeralStorage = ephemeralStorage
+			}
+		default:
+			if v1helper.IsScalarResourceName(rName) {
+				value := rQuantity.Value()
+				if value > r.ScalarResources[rName] {
+					r.SetScalar(rName, value)
+				}
+			}
+		}
+	}
+}
+
 // NewNodeInfo returns a ready to use empty NodeInfo object.
 // If any pods are given in arguments, their information will be aggregated in
 // the returned object.

pkg/scheduler/schedulercache/node_info_test.go

@@ -185,6 +185,56 @@ func TestResourceAddScalar(t *testing.T) {
 	}
 }
 
+func TestSetMaxResource(t *testing.T) {
+	tests := []struct {
+		resource     *Resource
+		resourceList v1.ResourceList
+		expected     *Resource
+	}{
+		{
+			resource: &Resource{},
+			resourceList: map[v1.ResourceName]resource.Quantity{
+				v1.ResourceCPU:              *resource.NewScaledQuantity(4, -3),
+				v1.ResourceMemory:           *resource.NewQuantity(2000, resource.BinarySI),
+				v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
+			},
+			expected: &Resource{
+				MilliCPU:         4,
+				Memory:           2000,
+				EphemeralStorage: 5000,
+			},
+		},
+		{
+			resource: &Resource{
+				MilliCPU:         4,
+				Memory:           4000,
+				EphemeralStorage: 5000,
+				ScalarResources:  map[v1.ResourceName]int64{"scalar.test/scalar1": 1, "hugepages-test": 2},
+			},
+			resourceList: map[v1.ResourceName]resource.Quantity{
+				v1.ResourceCPU:                      *resource.NewScaledQuantity(4, -3),
+				v1.ResourceMemory:                   *resource.NewQuantity(2000, resource.BinarySI),
+				v1.ResourceEphemeralStorage:         *resource.NewQuantity(7000, resource.BinarySI),
+				"scalar.test/scalar1":               *resource.NewQuantity(4, resource.DecimalSI),
+				v1.ResourceHugePagesPrefix + "test": *resource.NewQuantity(5, resource.BinarySI),
+			},
+			expected: &Resource{
+				MilliCPU:         4,
+				Memory:           4000,
+				EphemeralStorage: 7000,
+				ScalarResources:  map[v1.ResourceName]int64{"scalar.test/scalar1": 4, "hugepages-test": 5},
+			},
+		},
+	}
+
+	for _, test := range tests {
+		test.resource.SetMaxResource(test.resourceList)
+		if !reflect.DeepEqual(test.expected, test.resource) {
+			t.Errorf("expected: %#v, got: %#v", test.expected, test.resource)
+		}
+	}
+}
+
 func TestNewNodeInfo(t *testing.T) {
 	nodeName := "test-node"
 	pods := []*v1.Pod{