add exec timeout func

Author: umagnus

pkg/blob/controllerserver.go

@@ -61,8 +61,6 @@ const (
 	MSI                             = "MSI"
 	SPN                             = "SPN"
 	authorizationPermissionMismatch = "AuthorizationPermissionMismatch"
-
-	waitForAzCopyInterval = 2 * time.Second
 )
 
 // CreateVolume provisions a volume
@@ -85,7 +83,7 @@ func (d *Driver) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest)
 		// logging the job status if it's volume cloning
 		if req.GetVolumeContentSource() != nil {
 			jobState, percent, err := d.azcopy.GetAzcopyJob(volName, []string{})
-			klog.V(2).Infof("azcopy job status: %s, copy percent: %s%%, error: %v", jobState, percent, err)
+			return nil, status.Errorf(codes.Aborted, volumeOperationAlreadyExistsWithAzcopyFmt, volName, jobState, percent, err)
 		}
 		return nil, status.Errorf(codes.Aborted, volumeOperationAlreadyExistsFmt, volName)
 	}
@@ -759,43 +757,39 @@ func (d *Driver) copyBlobContainer(req *csi.CreateVolumeRequest, accountSasToken
 		return fmt.Errorf("srcContainerName(%s) or dstContainerName(%s) is empty", srcContainerName, dstContainerName)
 	}
 
-	timeAfter := time.After(time.Duration(d.waitForAzCopyTimeoutMinutes) * time.Minute)
-	timeTick := time.Tick(waitForAzCopyInterval)
 	srcPath := fmt.Sprintf("https://%s.blob.%s/%s%s", accountName, storageEndpointSuffix, srcContainerName, accountSasToken)
 	dstPath := fmt.Sprintf("https://%s.blob.%s/%s%s", accountName, storageEndpointSuffix, dstContainerName, accountSasToken)
 
 	jobState, percent, err := d.azcopy.GetAzcopyJob(dstContainerName, authAzcopyEnv)
 	klog.V(2).Infof("azcopy job status: %s, copy percent: %s%%, error: %v", jobState, percent, err)
-	if jobState == util.AzcopyJobError || jobState == util.AzcopyJobCompleted {
+	switch jobState {
+	case util.AzcopyJobError, util.AzcopyJobCompleted:
 		return err
-	}
-	klog.V(2).Infof("begin to copy blob container %s to %s", srcContainerName, dstContainerName)
-	for {
-		select {
-		case <-timeTick:
-			jobState, percent, err := d.azcopy.GetAzcopyJob(dstContainerName, authAzcopyEnv)
-			klog.V(2).Infof("azcopy job status: %s, copy percent: %s%%, error: %v", jobState, percent, err)
-			switch jobState {
-			case util.AzcopyJobError, util.AzcopyJobCompleted:
-				return err
-			case util.AzcopyJobNotFound:
-				klog.V(2).Infof("copy blob container %s to %s", srcContainerName, dstContainerName)
-				cmd := exec.Command("azcopy", "copy", srcPath, dstPath, "--recursive", "--check-length=false")
-				if len(authAzcopyEnv) > 0 {
-					cmd.Env = append(os.Environ(), authAzcopyEnv...)
-				}
-				out, copyErr := cmd.CombinedOutput()
-				if copyErr != nil {
-					klog.Warningf("CopyBlobContainer(%s, %s, %s) failed with error(%v): %v", resourceGroupName, accountName, dstPath, copyErr, string(out))
-				} else {
-					klog.V(2).Infof("copied blob container %s to %s successfully", srcContainerName, dstContainerName)
-				}
-				return copyErr
+	case util.AzcopyJobRunning:
+		return fmt.Errorf("an existed azcopy job is running, copy percent: %s%%, please wait for it to complete", percent)
+	case util.AzcopyJobNotFound:
+		klog.V(2).Infof("copy blob container %s to %s", srcContainerName, dstContainerName)
+		copyErr := util.WaitForExecCompletion(time.Duration(d.waitForAzCopyTimeoutMinutes)*time.Minute, func() error {
+			cmd := exec.Command("azcopy", "copy", srcPath, dstPath, "--recursive", "--check-length=false")
+			if len(authAzcopyEnv) > 0 {
+				cmd.Env = append(os.Environ(), authAzcopyEnv...)
 			}
-		case <-timeAfter:
-			return fmt.Errorf("timeout waiting for copy blob container %s to %s succeed", srcContainerName, dstContainerName)
+			if out, err := cmd.CombinedOutput(); err != nil {
+				return fmt.Errorf("exec error: %v, output: %v", err, string(out))
+			}
+			return nil
+		}, func() error {
+			_, percent, _ := d.azcopy.GetAzcopyJob(dstContainerName, authAzcopyEnv)
+			return fmt.Errorf("timeout waiting for copy blob container %s to %s succeed, copy percent: %s%%", srcContainerName, dstContainerName, percent)
+		})
+		if copyErr != nil {
+			klog.Warningf("CopyBlobContainer(%s, %s, %s) failed with error: %v", resourceGroupName, accountName, dstPath, copyErr)
+		} else {
+			klog.V(2).Infof("copied blob container %s to %s successfully", srcContainerName, dstContainerName)
 		}
+		return copyErr
 	}
+	return err
 }
 
 // copyVolume copies a volume form volume or snapshot, snapshot is not supported now

pkg/blob/volume_lock.go

@@ -23,7 +23,8 @@ import (
 )
 
 const (
-	volumeOperationAlreadyExistsFmt = "An operation with the given Volume ID %s already exists"
+	volumeOperationAlreadyExistsFmt           = "An operation with the given Volume ID %s already exists"
+	volumeOperationAlreadyExistsWithAzcopyFmt = "An operation using azcopy with the given Volume ID %s already exists. Azcopy job status: %s, copy percent: %s%%, error: %v"
 )
 
 // VolumeLocks implements a map with atomic operations. It stores a set of all volume IDs

pkg/util/util.go

@@ -24,6 +24,7 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/go-ini/ini"
 	"github.com/pkg/errors"
@@ -387,3 +388,30 @@ func SetVolumeOwnership(path, gid, policy string) error {
 	}
 	return volume.SetVolumeOwnership(&VolumeMounter{path: path}, path, &gidInt64, &fsGroupChangePolicy, nil)
 }
+
+// ExecFunc returns a exec function's output and error
+type ExecFunc func() (err error)
+
+// TimeoutFunc returns output and error if an ExecFunc timeout
+type TimeoutFunc func() (err error)
+
+// WaitForExecCompletion waits for the exec function to complete or times out
+func WaitForExecCompletion(timeout time.Duration, execFunc ExecFunc, timeoutFunc TimeoutFunc) error {
+	// Create a channel to receive the result of the azcopy exec function
+	done := make(chan bool)
+	var err error
+
+	// Start the azcopy exec function in a goroutine
+	go func() {
+		err = execFunc()
+		done <- true
+	}()
+
+	// Wait for the function to complete or time out
+	select {
+	case <-done:
+		return err
+	case <-time.After(timeout):
+		return timeoutFunc()
+	}
+}