mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-04 07:49:35 +00:00
e3f8f64c17
refactored operation generator and operation executor to use more general generated functions for operations, completions, and events.
571 lines
19 KiB
Go
571 lines
19 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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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 nestedpendingoperations
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import (
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"fmt"
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"testing"
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"time"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/kubernetes/pkg/volume/util/types"
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)
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const (
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// testTimeout is a timeout of goroutines to finish. This _should_ be just a
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// "context switch" and it should take several ms, however, Clayton says "We
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// have had flakes due to tests that assumed that 15s is long enough to sleep")
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testTimeout time.Duration = 1 * time.Minute
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// initialOperationWaitTimeShort is the initial amount of time the test will
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// wait for an operation to complete (each successive failure results in
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// exponential backoff).
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initialOperationWaitTimeShort time.Duration = 20 * time.Millisecond
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// initialOperationWaitTimeLong is the initial amount of time the test will
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// wait for an operation to complete (each successive failure results in
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// exponential backoff).
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initialOperationWaitTimeLong time.Duration = 500 * time.Millisecond
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)
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func Test_NewGoRoutineMap_Positive_SingleOp(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation := func() (error, error) { return nil, nil }
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// Act
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation})
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// Assert
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if err != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err)
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}
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}
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func Test_NewGoRoutineMap_Positive_TwoOps(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volume1Name := v1.UniqueVolumeName("volume1-name")
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volume2Name := v1.UniqueVolumeName("volume2-name")
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operation := func() (error, error) { return nil, nil }
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// Act
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err1 := grm.Run(volume1Name, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation})
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err2 := grm.Run(volume2Name, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation})
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// Assert
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if err1 != nil {
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t.Fatalf("NewGoRoutine %q failed. Expected: <no error> Actual: <%v>", volume1Name, err1)
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}
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if err2 != nil {
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t.Fatalf("NewGoRoutine %q failed. Expected: <no error> Actual: <%v>", volume2Name, err2)
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}
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}
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func Test_NewGoRoutineMap_Positive_TwoSubOps(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1PodName := types.UniquePodName("operation1-podname")
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operation2PodName := types.UniquePodName("operation2-podname")
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operation := func() (error, error) { return nil, nil }
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// Act
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err1 := grm.Run(volumeName, operation1PodName, types.GeneratedOperations{OperationFunc: operation})
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err2 := grm.Run(volumeName, operation2PodName, types.GeneratedOperations{OperationFunc: operation})
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// Assert
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if err1 != nil {
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t.Fatalf("NewGoRoutine %q failed. Expected: <no error> Actual: <%v>", operation1PodName, err1)
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}
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if err2 != nil {
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t.Fatalf("NewGoRoutine %q failed. Expected: <no error> Actual: <%v>", operation2PodName, err2)
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}
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}
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func Test_NewGoRoutineMap_Positive_SingleOpWithExpBackoff(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(true /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation := func() (error, error) { return nil, nil }
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// Act
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation})
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// Assert
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if err != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err)
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}
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}
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func Test_NewGoRoutineMap_Positive_SecondOpAfterFirstCompletes(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateCallbackFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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<-operation1DoneCh // Force operation1 to complete
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// Act
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err2 := retryWithExponentialBackOff(
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time.Duration(initialOperationWaitTimeShort),
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func() (bool, error) {
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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if err != nil {
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t.Logf("Warning: NewGoRoutine failed with %v. Will retry.", err)
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return false, nil
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}
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return true, nil
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},
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)
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// Assert
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if err2 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err2)
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}
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}
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func Test_NewGoRoutineMap_Positive_SecondOpAfterFirstCompletesWithExpBackoff(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(true /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateCallbackFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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<-operation1DoneCh // Force operation1 to complete
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// Act
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err2 := retryWithExponentialBackOff(
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time.Duration(initialOperationWaitTimeShort),
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func() (bool, error) {
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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if err != nil {
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t.Logf("Warning: NewGoRoutine failed with %v. Will retry.", err)
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return false, nil
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}
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return true, nil
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},
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)
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// Assert
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if err2 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err2)
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}
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}
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func Test_NewGoRoutineMap_Positive_SecondOpAfterFirstPanics(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1 := generatePanicFunc()
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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// Act
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err2 := retryWithExponentialBackOff(
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time.Duration(initialOperationWaitTimeShort),
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func() (bool, error) {
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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if err != nil {
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t.Logf("Warning: NewGoRoutine failed with %v. Will retry.", err)
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return false, nil
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}
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return true, nil
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},
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)
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// Assert
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if err2 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err2)
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}
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}
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func Test_NewGoRoutineMap_Positive_SecondOpAfterFirstPanicsWithExpBackoff(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(true /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1 := generatePanicFunc()
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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// Act
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err2 := retryWithExponentialBackOff(
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time.Duration(initialOperationWaitTimeLong), // Longer duration to accommodate for backoff
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func() (bool, error) {
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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if err != nil {
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t.Logf("Warning: NewGoRoutine failed with %v. Will retry.", err)
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return false, nil
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}
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return true, nil
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},
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)
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// Assert
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if err2 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err2)
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}
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}
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func Test_NewGoRoutineMap_Negative_SecondOpBeforeFirstCompletes(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateWaitFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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// Act
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err2 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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// Assert
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if err2 == nil {
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t.Fatalf("NewGoRoutine did not fail. Expected: <Failed to create operation with name \"%s\". An operation with that name already exists.> Actual: <no error>", volumeName)
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}
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if !IsAlreadyExists(err2) {
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t.Fatalf("NewGoRoutine did not return alreadyExistsError, got: %v", err2)
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}
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}
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func Test_NewGoRoutineMap_Negative_SecondSubOpBeforeFirstCompletes2(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operationPodName := types.UniquePodName("operation-podname")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateWaitFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, operationPodName, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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// Act
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err2 := grm.Run(volumeName, operationPodName, types.GeneratedOperations{OperationFunc: operation2})
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// Assert
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if err2 == nil {
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t.Fatalf("NewGoRoutine did not fail. Expected: <Failed to create operation with name \"%s\". An operation with that name already exists.> Actual: <no error>", volumeName)
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}
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if !IsAlreadyExists(err2) {
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t.Fatalf("NewGoRoutine did not return alreadyExistsError, got: %v", err2)
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}
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}
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func Test_NewGoRoutineMap_Negative_SecondSubOpBeforeFirstCompletes(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operationPodName := types.UniquePodName("operation-podname")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateWaitFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, operationPodName, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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// Act
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err2 := grm.Run(volumeName, operationPodName, types.GeneratedOperations{OperationFunc: operation2})
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// Assert
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if err2 == nil {
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t.Fatalf("NewGoRoutine did not fail. Expected: <Failed to create operation with name \"%s\". An operation with that name already exists.> Actual: <no error>", volumeName)
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}
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if !IsAlreadyExists(err2) {
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t.Fatalf("NewGoRoutine did not return alreadyExistsError, got: %v", err2)
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}
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}
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func Test_NewGoRoutineMap_Negative_SecondOpBeforeFirstCompletesWithExpBackoff(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(true /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateWaitFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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// Act
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err2 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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// Assert
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if err2 == nil {
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t.Fatalf("NewGoRoutine did not fail. Expected: <Failed to create operation with name \"%s\". An operation with that name already exists.> Actual: <no error>", volumeName)
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}
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if !IsAlreadyExists(err2) {
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t.Fatalf("NewGoRoutine did not return alreadyExistsError, got: %v", err2)
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}
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}
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func Test_NewGoRoutineMap_Positive_ThirdOpAfterFirstCompletes(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateWaitFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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operation3 := generateNoopFunc()
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// Act
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err2 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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// Assert
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if err2 == nil {
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t.Fatalf("NewGoRoutine did not fail. Expected: <Failed to create operation with name \"%s\". An operation with that name already exists.> Actual: <no error>", volumeName)
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}
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if !IsAlreadyExists(err2) {
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t.Fatalf("NewGoRoutine did not return alreadyExistsError, got: %v", err2)
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}
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// Act
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operation1DoneCh <- true // Force operation1 to complete
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err3 := retryWithExponentialBackOff(
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time.Duration(initialOperationWaitTimeShort),
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func() (bool, error) {
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation3})
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if err != nil {
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t.Logf("Warning: NewGoRoutine failed with %v. Will retry.", err)
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return false, nil
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}
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return true, nil
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},
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)
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// Assert
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if err3 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err3)
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}
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}
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func Test_NewGoRoutineMap_Positive_ThirdOpAfterFirstCompletesWithExpBackoff(t *testing.T) {
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// Arrange
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grm := NewNestedPendingOperations(true /* exponentialBackOffOnError */)
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volumeName := v1.UniqueVolumeName("volume-name")
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operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
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operation1 := generateWaitFunc(operation1DoneCh)
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err1 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
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if err1 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err1)
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}
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operation2 := generateNoopFunc()
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operation3 := generateNoopFunc()
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// Act
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err2 := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation2})
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// Assert
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if err2 == nil {
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t.Fatalf("NewGoRoutine did not fail. Expected: <Failed to create operation with name \"%s\". An operation with that name already exists.> Actual: <no error>", volumeName)
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}
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if !IsAlreadyExists(err2) {
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t.Fatalf("NewGoRoutine did not return alreadyExistsError, got: %v", err2)
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}
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// Act
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operation1DoneCh <- true // Force operation1 to complete
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err3 := retryWithExponentialBackOff(
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time.Duration(initialOperationWaitTimeShort),
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func() (bool, error) {
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err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation3})
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if err != nil {
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t.Logf("Warning: NewGoRoutine failed with %v. Will retry.", err)
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return false, nil
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}
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return true, nil
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},
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)
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// Assert
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if err3 != nil {
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t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err3)
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}
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}
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func Test_NewGoRoutineMap_Positive_WaitEmpty(t *testing.T) {
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// Test than Wait() on empty GoRoutineMap always succeeds without blocking
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// Arrange
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grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
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// Act
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waitDoneCh := make(chan interface{}, 1)
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go func() {
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grm.Wait()
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waitDoneCh <- true
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}()
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// Assert
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err := waitChannelWithTimeout(waitDoneCh, testTimeout)
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if err != nil {
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t.Errorf("Error waiting for GoRoutineMap.Wait: %v", err)
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}
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}
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func Test_NewGoRoutineMap_Positive_WaitEmptyWithExpBackoff(t *testing.T) {
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// Test than Wait() on empty GoRoutineMap always succeeds without blocking
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// Arrange
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grm := NewNestedPendingOperations(true /* exponentialBackOffOnError */)
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// Act
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waitDoneCh := make(chan interface{}, 1)
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go func() {
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grm.Wait()
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waitDoneCh <- true
|
|
}()
|
|
|
|
// Assert
|
|
err := waitChannelWithTimeout(waitDoneCh, testTimeout)
|
|
if err != nil {
|
|
t.Errorf("Error waiting for GoRoutineMap.Wait: %v", err)
|
|
}
|
|
}
|
|
|
|
func Test_NewGoRoutineMap_Positive_Wait(t *testing.T) {
|
|
// Test that Wait() really blocks until the last operation succeeds
|
|
// Arrange
|
|
grm := NewNestedPendingOperations(false /* exponentialBackOffOnError */)
|
|
volumeName := v1.UniqueVolumeName("volume-name")
|
|
operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
|
|
operation1 := generateWaitFunc(operation1DoneCh)
|
|
err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
|
|
if err != nil {
|
|
t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err)
|
|
}
|
|
|
|
// Act
|
|
waitDoneCh := make(chan interface{}, 1)
|
|
go func() {
|
|
grm.Wait()
|
|
waitDoneCh <- true
|
|
}()
|
|
|
|
// Finish the operation
|
|
operation1DoneCh <- true
|
|
|
|
// Assert
|
|
err = waitChannelWithTimeout(waitDoneCh, testTimeout)
|
|
if err != nil {
|
|
t.Fatalf("Error waiting for GoRoutineMap.Wait: %v", err)
|
|
}
|
|
}
|
|
|
|
func Test_NewGoRoutineMap_Positive_WaitWithExpBackoff(t *testing.T) {
|
|
// Test that Wait() really blocks until the last operation succeeds
|
|
// Arrange
|
|
grm := NewNestedPendingOperations(true /* exponentialBackOffOnError */)
|
|
volumeName := v1.UniqueVolumeName("volume-name")
|
|
operation1DoneCh := make(chan interface{}, 0 /* bufferSize */)
|
|
operation1 := generateWaitFunc(operation1DoneCh)
|
|
err := grm.Run(volumeName, "" /* operationSubName */, types.GeneratedOperations{OperationFunc: operation1})
|
|
if err != nil {
|
|
t.Fatalf("NewGoRoutine failed. Expected: <no error> Actual: <%v>", err)
|
|
}
|
|
|
|
// Act
|
|
waitDoneCh := make(chan interface{}, 1)
|
|
go func() {
|
|
grm.Wait()
|
|
waitDoneCh <- true
|
|
}()
|
|
|
|
// Finish the operation
|
|
operation1DoneCh <- true
|
|
|
|
// Assert
|
|
err = waitChannelWithTimeout(waitDoneCh, testTimeout)
|
|
if err != nil {
|
|
t.Fatalf("Error waiting for GoRoutineMap.Wait: %v", err)
|
|
}
|
|
}
|
|
|
|
func generateCallbackFunc(done chan<- interface{}) func() (error, error) {
|
|
return func() (error, error) {
|
|
done <- true
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
func generateWaitFunc(done <-chan interface{}) func() (error, error) {
|
|
return func() (error, error) {
|
|
<-done
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
func generatePanicFunc() func() (error, error) {
|
|
return func() (error, error) {
|
|
panic("testing panic")
|
|
}
|
|
}
|
|
|
|
func generateNoopFunc() func() (error, error) {
|
|
return func() (error, error) { return nil, nil }
|
|
}
|
|
|
|
func retryWithExponentialBackOff(initialDuration time.Duration, fn wait.ConditionFunc) error {
|
|
backoff := wait.Backoff{
|
|
Duration: initialDuration,
|
|
Factor: 3,
|
|
Jitter: 0,
|
|
Steps: 4,
|
|
}
|
|
return wait.ExponentialBackoff(backoff, fn)
|
|
}
|
|
|
|
func waitChannelWithTimeout(ch <-chan interface{}, timeout time.Duration) error {
|
|
timer := time.NewTimer(timeout)
|
|
defer timer.Stop()
|
|
|
|
select {
|
|
case <-ch:
|
|
// Success!
|
|
return nil
|
|
case <-timer.C:
|
|
return fmt.Errorf("timeout after %v", timeout)
|
|
}
|
|
}
|