io.etcd.jetcd.LockImpl Maven / Gradle / Ivy
/*
* Copyright 2016-2021 The jetcd 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 io.etcd.jetcd;
import java.util.concurrent.CompletableFuture;
import io.etcd.jetcd.api.lock.LockGrpc;
import io.etcd.jetcd.api.lock.LockRequest;
import io.etcd.jetcd.api.lock.UnlockRequest;
import io.etcd.jetcd.lock.LockResponse;
import io.etcd.jetcd.lock.UnlockResponse;
import static com.google.common.base.Preconditions.checkNotNull;
final class LockImpl implements Lock {
private final ClientConnectionManager connectionManager;
private final LockGrpc.LockFutureStub stub;
private final ByteSequence namespace;
LockImpl(ClientConnectionManager connectionManager) {
this.connectionManager = connectionManager;
this.stub = connectionManager.newStub(LockGrpc::newFutureStub);
this.namespace = connectionManager.getNamespace();
}
@Override
public CompletableFuture lock(ByteSequence name, long leaseId) {
checkNotNull(name);
LockRequest request = LockRequest.newBuilder()
.setName(Util.prefixNamespace(name.getByteString(), namespace))
.setLease(leaseId)
.build();
return connectionManager.execute(
() -> stub.lock(request),
response -> new LockResponse(response, namespace),
Util::isRetryable);
}
@Override
public CompletableFuture unlock(ByteSequence lockKey) {
checkNotNull(lockKey);
UnlockRequest request = UnlockRequest.newBuilder()
.setKey(Util.prefixNamespace(lockKey.getByteString(), namespace))
.build();
return connectionManager.execute(
() -> stub.unlock(request),
UnlockResponse::new,
Util::isRetryable);
}
}