feature: Added command to list pods managed by fission for environment/function (#2207)

pkg/utils/podutils.go

@@ -0,0 +1,64 @@
+/*
+Copyright 2021 The Fission 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 utils
+
+import (
+	v1 "k8s.io/api/core/v1"
+)
+
+// IsReadyPod checks both all containers in a pod are ready and whether
+// the .metadata.DeletionTimestamp is nil.
+func IsReadyPod(pod *v1.Pod) bool {
+	// since its a utility function, just ensuring there is no nil pointer exception
+	if pod == nil {
+		return false
+	}
+
+	// pod is in "Terminating" status if deletionTimestamp is not nil
+	// https://github.com/kubernetes/kubernetes/issues/61376
+	if pod.ObjectMeta.DeletionTimestamp != nil {
+		return false
+	}
+
+	// pod does not have an IP address allocated to it yet
+	if pod.Status.PodIP == "" {
+		return false
+	}
+
+	for _, cStatus := range pod.Status.ContainerStatuses {
+		if !cStatus.Ready {
+			return false
+		}
+	}
+
+	return true
+}
+
+// PodContainerReadyStatus returns the number of ready containers and total containers present in pod
+func PodContainerReadyStatus(pod *v1.Pod) (readyContainers, noOfContainers int) {
+
+	noOfContainers = len(pod.Status.ContainerStatuses)
+	readyContainers = 0
+
+	for _, status := range pod.Status.ContainerStatuses {
+		if status.Ready {
+			readyContainers++
+		}
+	}
+
+	return
+}

pkg/utils/utils.go

@@ -58,34 +58,6 @@ func GetFunctionIstioServiceName(fnName, fnNamespace string) string {
 	return fmt.Sprintf("istio-%v-%v", fnName, fnNamespace)
 }
 
-// IsReadyPod checks both all containers in a pod are ready and whether
-// the .metadata.DeletionTimestamp is nil.
-func IsReadyPod(pod *apiv1.Pod) bool {
-	// since its a utility function, just ensuring there is no nil pointer exception
-	if pod == nil {
-		return false
-	}
-
-	// pod is in "Terminating" status if deletionTimestamp is not nil
-	// https://github.com/kubernetes/kubernetes/issues/61376
-	if pod.ObjectMeta.DeletionTimestamp != nil {
-		return false
-	}
-
-	// pod does not have an IP address allocated to it yet
-	if pod.Status.PodIP == "" {
-		return false
-	}
-
-	for _, cStatus := range pod.Status.ContainerStatuses {
-		if !cStatus.Ready {
-			return false
-		}
-	}
-
-	return true
-}
-
 // GetTempDir creates and return a temporary directory
 func GetTempDir() (string, error) {
 	id, err := uuid.NewV4()