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[DEVOPS-635] Refactor waiting for resources to be ready #10
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| package failover | ||
|
|
||
| import ( | ||
| "github.com/spotahome/redis-operator/pkg/log" | ||
|
|
||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/pkg/api/v1" | ||
| ) | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForPod(name string, namespace string, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for pod to be ready") | ||
| pod, _ := r.Client.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{}) | ||
| for _, condition := range pod.Status.Conditions { | ||
| if condition.Type == "Ready" && condition.Status == v1.ConditionTrue { | ||
| return | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForService(name string, namespace string, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for service to find bootstrap pod") | ||
| endpoints, _ := r.Client.CoreV1().Endpoints(namespace).Get(name, metav1.GetOptions{}) | ||
| addresses := 0 | ||
| for _, subset := range endpoints.Subsets { | ||
| addresses += len(subset.Addresses) | ||
| } | ||
| if addresses > 0 { | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForDeployment(name string, namespace string, replicas int32, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for Sentinel deployment to be fully operative") | ||
| deployment, _ := r.Client.AppsV1beta1().Deployments(namespace).Get(name, metav1.GetOptions{}) | ||
| if deployment.Status.ReadyReplicas == replicas { | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForStatefulset(name string, namespace string, replicas int32, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for Redis statefulset to be fully operative") | ||
| statefulset, _ := r.Client.AppsV1beta1().StatefulSets(namespace).Get(name, metav1.GetOptions{}) | ||
| if statefulset.Status.ReadyReplicas == replicas { | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForPodDeletion(name string, namespace string, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for pod to terminate") | ||
| podList, _ := r.Client.CoreV1().Pods(namespace).List(metav1.ListOptions{}) | ||
| found := false | ||
| for _, pod := range podList.Items { | ||
| if pod.Name == name { | ||
| found = true | ||
| } | ||
| } | ||
| if !found { | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForStatefulsetDeletion(name string, namespace string, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for statefulset to terminate") | ||
| statefulsetList, _ := r.Client.AppsV1beta1().StatefulSets(namespace).List(metav1.ListOptions{}) | ||
| found := false | ||
| for _, statefulset := range statefulsetList.Items { | ||
| if statefulset.Name == name { | ||
| found = true | ||
| } | ||
| } | ||
| if !found { | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForDeploymentDeletion(name string, namespace string, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for deployment to terminate") | ||
| deploymentList, _ := r.Client.Apps().Deployments(namespace).List(metav1.ListOptions{}) | ||
| found := false | ||
| for _, deployment := range deploymentList.Items { | ||
| if deployment.Name == name { | ||
| found = true | ||
| } | ||
| } | ||
| if !found { | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *RedisFailoverKubeClient) waitForServiceDeletion(name string, namespace string, logger log.Logger) { | ||
| t := r.clock.NewTicker(loopInterval) | ||
| defer t.Stop() | ||
|
|
||
| for range t.C { | ||
| logger.Debug("Waiting for service to disappear") | ||
| serviceList, _ := r.Client.Core().Services(namespace).List(metav1.ListOptions{}) | ||
| found := false | ||
| for _, service := range serviceList.Items { | ||
| if service.Name == name { | ||
| found = true | ||
| } | ||
| } | ||
| if !found { | ||
| return | ||
| } | ||
| } | ||
| } | ||
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All this deletion methods could be reduced to one codebase (no code duplication) and pass an interface taht gets the items.
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As we've discussed, It's more complicated to do an interface because runtime.Object does not implement the Items function (for the list). We'd have to do a manual object copy and it does not worth it.