mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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93 lines
3.2 KiB
Go
93 lines
3.2 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubelet
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import (
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"fmt"
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"strings"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/golang/glog"
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)
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const ConfigSourceAnnotationKey = "kubernetes.io/config.source"
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// PodOperation defines what changes will be made on a pod configuration.
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type PodOperation int
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const (
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// This is the current pod configuration
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SET PodOperation = iota
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// Pods with the given ids are new to this source
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ADD
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// Pods with the given ids have been removed from this source
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REMOVE
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// Pods with the given ids have been updated in this source
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UPDATE
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// These constants identify the sources of pods
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// Updates from a file
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FileSource = "file"
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// Updates from etcd
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EtcdSource = "etcd"
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// Updates from querying a web page
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HTTPSource = "http"
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// Updates received to the kubelet server
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ServerSource = "server"
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// Updates from Kubernetes API Server
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ApiserverSource = "api"
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// Updates from all sources
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AllSource = "*"
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)
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// PodUpdate defines an operation sent on the channel. You can add or remove single services by
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// sending an array of size one and Op == ADD|REMOVE (with REMOVE, only the ID is required).
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// For setting the state of the system to a given state for this source configuration, set
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// Pods as desired and Op to SET, which will reset the system state to that specified in this
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// operation for this source channel. To remove all pods, set Pods to empty object and Op to SET.
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//
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// Additionally, Pods should never be nil - it should always point to an empty slice. While
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// functionally similar, this helps our unit tests properly check that the correct PodUpdates
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// are generated.
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type PodUpdate struct {
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Pods []api.BoundPod
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Op PodOperation
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Source string
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}
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// GetPodFullName returns a name that uniquely identifies a pod across all config sources.
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func GetPodFullName(pod *api.BoundPod) string {
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return fmt.Sprintf("%s.%s.%s", pod.Name, pod.Namespace, pod.Annotations[ConfigSourceAnnotationKey])
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}
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// ParsePodFullName unpacks a pod full name and returns the pod name, namespace, and annotations.
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// If the pod full name is invalid, empty strings are returend.
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func ParsePodFullName(podFullName string) (podName, podNamespace string, podAnnotations map[string]string) {
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parts := strings.Split(podFullName, ".")
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expectedNumFields := 3
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actualNumFields := len(parts)
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if actualNumFields != expectedNumFields {
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glog.Errorf("found a podFullName (%q) with too few fields: expected %d, actual %d.", podFullName, expectedNumFields, actualNumFields)
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return
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}
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podName = parts[0]
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podNamespace = parts[1]
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podAnnotations = make(map[string]string)
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podAnnotations[ConfigSourceAnnotationKey] = parts[2]
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return
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}
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