org.apache.hadoop.hbase.client.MasterCoprocessorRpcChannelImpl Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.hbase.client;
import static org.apache.hadoop.hbase.util.FutureUtils.addListener;
import com.google.protobuf.Descriptors.MethodDescriptor;
import com.google.protobuf.Message;
import com.google.protobuf.RpcCallback;
import com.google.protobuf.RpcChannel;
import com.google.protobuf.RpcController;
import java.io.IOException;
import java.util.concurrent.CompletableFuture;
import org.apache.hadoop.hbase.client.AsyncRpcRetryingCallerFactory.MasterRequestCallerBuilder;
import org.apache.hadoop.hbase.ipc.CoprocessorRpcUtils;
import org.apache.hadoop.hbase.ipc.HBaseRpcController;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.MasterService;
/**
* The implementation of a master based coprocessor rpc channel.
*/
@InterfaceAudience.Private
class MasterCoprocessorRpcChannelImpl implements RpcChannel {
MasterRequestCallerBuilder callerBuilder;
MasterCoprocessorRpcChannelImpl(MasterRequestCallerBuilder callerBuilder) {
this.callerBuilder = callerBuilder;
}
private CompletableFuture rpcCall(MethodDescriptor method, Message request,
Message responsePrototype, HBaseRpcController controller, MasterService.Interface stub) {
CompletableFuture future = new CompletableFuture<>();
CoprocessorServiceRequest csr =
CoprocessorRpcUtils.getCoprocessorServiceRequest(method, request);
stub.execMasterService(controller, csr,
new org.apache.hbase.thirdparty.com.google.protobuf.RpcCallback<
CoprocessorServiceResponse>() {
@Override
public void run(CoprocessorServiceResponse resp) {
if (controller.failed()) {
future.completeExceptionally(controller.getFailed());
} else {
try {
future.complete(CoprocessorRpcUtils.getResponse(resp, responsePrototype));
} catch (IOException e) {
future.completeExceptionally(e);
}
}
}
});
return future;
}
@Override
public void callMethod(MethodDescriptor method, RpcController controller, Message request,
Message responsePrototype, RpcCallback done) {
addListener(
callerBuilder.action((c, s) -> rpcCall(method, request, responsePrototype, c, s)).call(),
(r, e) -> {
if (e != null) {
((ClientCoprocessorRpcController) controller).setFailed(e);
}
done.run(r);
});
}
}