google-nomulus/javatests/google/registry/testing/FakeLockHandler.java
guyben 978149e677 Create an injectable LockHandler
We create an injectable LockHandler that just calls the static
Lock.executeWithLocks function.

I'm not sure what's the correct place to put the LockHandler. I think
model/server is only appropriate for the actual datastore lock. This is a "per request" lock, so maybe request/lock?

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This is the initial step in adding the "lock implicitly released on request death" feature, but it's also useful on its own - easier to test Actions when we can use a fake lock.

To keep this CL simple, we keep using the old Lock as is in most places. We just choose a single example to convert to LockHandler to showcase it. Converting all other uses will be in a subsequent CL.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=167357564
2017-09-12 15:51:50 -04:00

57 lines
1.7 KiB
Java

// Copyright 2017 The Nomulus Authors. All Rights Reserved.
//
// 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 google.registry.testing;
import static com.google.common.base.Throwables.throwIfUnchecked;
import google.registry.request.lock.LockHandler;
import java.util.concurrent.Callable;
import javax.annotation.Nullable;
import org.joda.time.Duration;
/** A fake {@link LockHandler} where user can control if lock acquisition succeeds. */
public class FakeLockHandler implements LockHandler {
private static final long serialVersionUID = 6437880915118738492L;
boolean lockSucceeds = true;
/**
* @param lockSucceeds if true - the lock acquisition will succeed and the callable will be
* called. If false, lock acquisition will fail and the caller isn't called.
*/
public FakeLockHandler(boolean lockSucceeds) {
this.lockSucceeds = lockSucceeds;
}
@Override
public boolean executeWithLocks(
final Callable<Void> callable,
@Nullable String tld,
Duration leaseLength,
String... lockNames) {
if (!lockSucceeds) {
return false;
}
try {
callable.call();
} catch (Exception e) {
throwIfUnchecked(e);
throw new RuntimeException(e);
}
return true;
}
}