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ceph-csi/internal/util/idlocker_test.go
Madhu Rajanna d6348545ab journal: Add additional operation based locking
As we are adding new functionalities like Create/Delete
snapshot,Clone from Snapshot and Clone from Volume.
with the current implementation, there are only serial
operations allowed for this functionalities, for some
function we can allow parallel operations like
Clone from snapshot and Clone from Volume and Create
`N` snapshots on a single volume.

Delete Volume: Need to ensure that there is no clone,
Snapshot create and  Expand volume in progress.

Expand Volume: Need to ensure that there is no clone,
snapshot create and cloning in progress

Delete Snapshot: Need to ensure that there is no
cloning in progress

Restore Volume/Snapshot: Need to ensure that there is
no Expand or delete operation in progress.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-21 13:25:19 +00:00

134 lines
3.5 KiB
Go

/*
Copyright 2019 ceph-csi 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 util
import (
"testing"
)
// very basic tests for the moment.
func TestIDLocker(t *testing.T) {
fakeID := "fake-id"
locks := NewVolumeLocks()
// acquire lock for fake-id
ok := locks.TryAcquire(fakeID)
if !ok {
t.Errorf("TryAcquire failed: want (%v), got (%v)",
true, ok)
}
// try to acquire lock again for fake-id, as lock is already present
// it should fail
ok = locks.TryAcquire(fakeID)
if ok {
t.Errorf("TryAcquire failed: want (%v), got (%v)",
false, ok)
}
// release the lock for fake-id and try to get lock again, it should pass
locks.Release(fakeID)
ok = locks.TryAcquire(fakeID)
if !ok {
t.Errorf("TryAcquire failed: want (%v), got (%v)",
true, ok)
}
}
func TestOperationLocks(t *testing.T) {
volumeID := "test-vol"
lock := NewOperationLock()
err := lock.GetCloneLock(volumeID)
if err != nil {
t.Errorf("failed to acquire clone lock for %s %s", volumeID, err)
}
err = lock.GetDeleteLock(volumeID)
if err == nil {
t.Errorf("expected to fail for GetDeleteLock for %s", volumeID)
}
err = lock.GetExpandLock(volumeID)
if err == nil {
t.Errorf("expected to fail for GetExpandLock for %s", volumeID)
}
lock.ReleaseCloneLock(volumeID)
// Get multiple clone operation
err = lock.GetCloneLock(volumeID)
if err != nil {
t.Errorf("failed to acquire clone lock for %s %s", volumeID, err)
}
err = lock.GetCloneLock(volumeID)
if err != nil {
t.Errorf("failed to acquire clone lock for %s %s", volumeID, err)
}
err = lock.GetCloneLock(volumeID)
if err != nil {
t.Errorf("failed to acquire clone lock for %s %s", volumeID, err)
}
// release all clone locks
lock.ReleaseCloneLock(volumeID)
lock.ReleaseCloneLock(volumeID)
lock.ReleaseCloneLock(volumeID)
// release extra lock it should not cause any issue as the key is already
// deleted from the map
lock.ReleaseCloneLock(volumeID)
// get multiple restore lock
err = lock.GetRestoreLock(volumeID)
if err != nil {
t.Errorf("failed to acquire restore lock for %s %s", volumeID, err)
}
err = lock.GetRestoreLock(volumeID)
if err != nil {
t.Errorf("failed to acquire restore lock for %s %s", volumeID, err)
}
err = lock.GetRestoreLock(volumeID)
if err != nil {
t.Errorf("failed to acquire restore lock for %s %s", volumeID, err)
}
// try for snapshot delete lock
err = lock.GetDeleteLock(volumeID)
if err == nil {
t.Errorf("expected to fail for GetDeleteLock for %s", volumeID)
}
// release all restore locks
lock.ReleaseRestoreLock(volumeID)
lock.ReleaseRestoreLock(volumeID)
lock.ReleaseRestoreLock(volumeID)
err = lock.GetSnapshotCreateLock(volumeID)
if err != nil {
t.Errorf("failed to acquire createSnapshot lock for %s %s", volumeID, err)
}
err = lock.GetDeleteLock(volumeID)
if err == nil {
t.Errorf("expected to fail for GetDeleteLock for %s", volumeID)
}
lock.ReleaseSnapshotCreateLock(volumeID)
err = lock.GetDeleteLock(volumeID)
if err != nil {
t.Errorf("failed to get GetDeleteLock for %s %v", volumeID, err)
}
lock.ReleaseDeleteLock(volumeID)
}