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e2db3f914e
This removes some qualifiers that aren't necessary (e.g. public/abstract on interfaces, private on enum constructors, final on private methods, static on nested interfaces/enums), uses Java 8 lambdas and features where that's an improvement ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=177182945
45 lines
1.5 KiB
Java
45 lines
1.5 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package google.registry.request.lock;
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import java.io.Serializable;
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import java.util.concurrent.Callable;
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import javax.annotation.Nullable;
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import org.joda.time.Duration;
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/**
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* Code execution locked on some shared resource.
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*
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* <p>Locks are either specific to a tld or global to the entire system, in which case a tld of
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* null is used.
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*/
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public interface LockHandler extends Serializable {
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/**
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* Acquire one or more locks and execute a Void {@link Callable}.
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*
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* <p>Runs on a thread that will be killed if it doesn't complete before the lease expires.
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*
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* <p>Note that locks are specific either to a given tld or to the entire system (in which case
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* tld should be passed as null).
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*
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* @return true if all locks were acquired and the callable was run; false otherwise.
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*/
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boolean executeWithLocks(
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final Callable<Void> callable,
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@Nullable String tld,
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Duration leaseLength,
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String... lockNames);
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}
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