vendor files

vendor/k8s.io/kubernetes/pkg/kubelet/eviction/api/BUILD

@@ -0,0 +1,26 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["types.go"],
+    importpath = "k8s.io/kubernetes/pkg/kubelet/eviction/api",
+    deps = ["//vendor/k8s.io/apimachinery/pkg/api/resource:go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)

vendor/k8s.io/kubernetes/pkg/kubelet/eviction/api/types.go

@@ -0,0 +1,100 @@
+/*
+Copyright 2017 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 api
+
+import (
+	"time"
+
+	"k8s.io/apimachinery/pkg/api/resource"
+)
+
+// Signal defines a signal that can trigger eviction of pods on a node.
+type Signal string
+
+const (
+	// SignalMemoryAvailable is memory available (i.e. capacity - workingSet), in bytes.
+	SignalMemoryAvailable Signal = "memory.available"
+	// SignalNodeFsAvailable is amount of storage available on filesystem that kubelet uses for volumes, daemon logs, etc.
+	SignalNodeFsAvailable Signal = "nodefs.available"
+	// SignalNodeFsInodesFree is amount of inodes available on filesystem that kubelet uses for volumes, daemon logs, etc.
+	SignalNodeFsInodesFree Signal = "nodefs.inodesFree"
+	// SignalImageFsAvailable is amount of storage available on filesystem that container runtime uses for storing images and container writable layers.
+	SignalImageFsAvailable Signal = "imagefs.available"
+	// SignalImageFsInodesFree is amount of inodes available on filesystem that container runtime uses for storing images and container writeable layers.
+	SignalImageFsInodesFree Signal = "imagefs.inodesFree"
+	// SignalAllocatableMemoryAvailable is amount of memory available for pod allocation (i.e. allocatable - workingSet (of pods), in bytes.
+	SignalAllocatableMemoryAvailable Signal = "allocatableMemory.available"
+	// SignalAllocatableNodeFsAvailable is amount of local storage available for pod allocation
+	SignalAllocatableNodeFsAvailable Signal = "allocatableNodeFs.available"
+)
+
+// ThresholdOperator is the operator used to express a Threshold.
+type ThresholdOperator string
+
+const (
+	// OpLessThan is the operator that expresses a less than operator.
+	OpLessThan ThresholdOperator = "LessThan"
+)
+
+// OpForSignal maps Signals to ThresholdOperators.
+// Today, the only supported operator is "LessThan". This may change in the future,
+// for example if "consumed" (as opposed to "available") type signals are added.
+// In both cases the directionality of the threshold is implicit to the signal type
+// (for a given signal, the decision to evict will be made when crossing the threshold
+// from either above or below, never both). There is thus no reason to expose the
+// operator in the Kubelet's public API. Instead, we internally map signal types to operators.
+var OpForSignal = map[Signal]ThresholdOperator{
+	SignalMemoryAvailable:            OpLessThan,
+	SignalNodeFsAvailable:            OpLessThan,
+	SignalNodeFsInodesFree:           OpLessThan,
+	SignalImageFsAvailable:           OpLessThan,
+	SignalImageFsInodesFree:          OpLessThan,
+	SignalAllocatableMemoryAvailable: OpLessThan,
+	SignalAllocatableNodeFsAvailable: OpLessThan,
+}
+
+// ThresholdValue is a value holder that abstracts literal versus percentage based quantity
+type ThresholdValue struct {
+	// The following fields are exclusive. Only the topmost non-zero field is used.
+
+	// Quantity is a quantity associated with the signal that is evaluated against the specified operator.
+	Quantity *resource.Quantity
+	// Percentage represents the usage percentage over the total resource that is evaluated against the specified operator.
+	Percentage float32
+}
+
+// Threshold defines a metric for when eviction should occur.
+type Threshold struct {
+	// Signal defines the entity that was measured.
+	Signal Signal
+	// Operator represents a relationship of a signal to a value.
+	Operator ThresholdOperator
+	// Value is the threshold the resource is evaluated against.
+	Value ThresholdValue
+	// GracePeriod represents the amount of time that a threshold must be met before eviction is triggered.
+	GracePeriod time.Duration
+	// MinReclaim represents the minimum amount of resource to reclaim if the threshold is met.
+	MinReclaim *ThresholdValue
+}
+
+// GetThresholdQuantity returns the expected quantity value for a thresholdValue
+func GetThresholdQuantity(value ThresholdValue, capacity *resource.Quantity) *resource.Quantity {
+	if value.Quantity != nil {
+		return value.Quantity.Copy()
+	}
+	return resource.NewQuantity(int64(float64(capacity.Value())*float64(value.Percentage)), resource.BinarySI)
+}