124 lines
4.1 KiB
Go
124 lines
4.1 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors 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 cluster
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import (
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"net"
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"strings"
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federation_v1alpha1 "k8s.io/kubernetes/federation/apis/federation/v1alpha1"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/client/restclient"
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"k8s.io/kubernetes/pkg/client/typed/discovery"
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"k8s.io/kubernetes/pkg/client/unversioned/clientcmd"
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utilnet "k8s.io/kubernetes/pkg/util/net"
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)
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const (
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UserAgentName = "Cluster-Controller"
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KubeAPIQPS = 20.0
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KubeAPIBurst = 30
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)
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type ClusterClient struct {
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discoveryClient *discovery.DiscoveryClient
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}
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func NewClusterClientSet(c *federation_v1alpha1.Cluster) (*ClusterClient, error) {
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var serverAddress string
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hostIP, err := utilnet.ChooseHostInterface()
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if err != nil {
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return nil, err
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}
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for _, item := range c.Spec.ServerAddressByClientCIDRs {
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_, cidrnet, err := net.ParseCIDR(item.ClientCIDR)
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if err != nil {
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return nil, err
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}
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myaddr := net.ParseIP(hostIP.String())
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if cidrnet.Contains(myaddr) == true {
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serverAddress = item.ServerAddress
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break
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}
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}
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var clusterClientSet = ClusterClient{}
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if serverAddress != "" {
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clusterConfig, err := clientcmd.BuildConfigFromFlags(serverAddress, "")
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if err != nil {
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return nil, err
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}
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clusterConfig.QPS = KubeAPIQPS
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clusterConfig.Burst = KubeAPIBurst
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clusterClientSet.discoveryClient = discovery.NewDiscoveryClientForConfigOrDie((restclient.AddUserAgent(clusterConfig, UserAgentName)))
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if clusterClientSet.discoveryClient == nil {
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return nil, nil
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}
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}
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return &clusterClientSet, err
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}
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// GetClusterHealthStatus gets the kubernetes cluster health status by requesting "/healthz"
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func (self *ClusterClient) GetClusterHealthStatus() *federation_v1alpha1.ClusterStatus {
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clusterStatus := federation_v1alpha1.ClusterStatus{}
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currentTime := unversioned.Now()
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newClusterReadyCondition := federation_v1alpha1.ClusterCondition{
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Type: federation_v1alpha1.ClusterReady,
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Status: v1.ConditionTrue,
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Reason: "ClusterReady",
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Message: "/healthz responded with ok",
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LastProbeTime: currentTime,
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LastTransitionTime: currentTime,
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}
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newClusterNotReadyCondition := federation_v1alpha1.ClusterCondition{
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Type: federation_v1alpha1.ClusterReady,
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Status: v1.ConditionFalse,
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Reason: "ClusterNotReady",
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Message: "/healthz responded without ok",
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LastProbeTime: currentTime,
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LastTransitionTime: currentTime,
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}
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newNodeOfflineCondition := federation_v1alpha1.ClusterCondition{
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Type: federation_v1alpha1.ClusterOffline,
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Status: v1.ConditionTrue,
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Reason: "ClusterNotReachable",
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Message: "cluster is not reachable",
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LastProbeTime: currentTime,
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LastTransitionTime: currentTime,
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}
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newNodeNotOfflineCondition := federation_v1alpha1.ClusterCondition{
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Type: federation_v1alpha1.ClusterOffline,
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Status: v1.ConditionFalse,
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Reason: "ClusterReachable",
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Message: "cluster is reachable",
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LastProbeTime: currentTime,
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LastTransitionTime: currentTime,
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}
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body, err := self.discoveryClient.Get().AbsPath("/healthz").Do().Raw()
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if err != nil {
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clusterStatus.Conditions = append(clusterStatus.Conditions, newNodeOfflineCondition)
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} else {
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if !strings.EqualFold(string(body), "ok") {
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clusterStatus.Conditions = append(clusterStatus.Conditions, newClusterNotReadyCondition, newNodeNotOfflineCondition)
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} else {
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clusterStatus.Conditions = append(clusterStatus.Conditions, newClusterReadyCondition)
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}
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}
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return &clusterStatus
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}
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