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/*
* Copyright 2018 Huawei Technologies Co., Ltd.
*
* 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 org.open.infc.grpc.client;
import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.open.infc.grpc.Args;
import org.open.infc.grpc.Input;
import org.open.infc.grpc.OpenInterfaceGrpc;
import org.open.infc.grpc.Output;
import org.open.infc.grpc.Result;
import io.grpc.ManagedChannel;
import io.grpc.ManagedChannelBuilder;
import io.grpc.StatusRuntimeException;
public class OpenInterfaceGrpcClient {
private static final Logger logger = LoggerFactory.getLogger(OpenInterfaceGrpcClient.class.getName());
private final ManagedChannel channel;
private final OpenInterfaceGrpc.OpenInterfaceBlockingStub blockingStub;
//10 seconds
private int timeout = 60000;
public static class OpenInterfaceGrpcExecption extends Exception {
private static final long serialVersionUID = -8755636432217894246L;
private int errorCode = -1; //NOSONAR
public OpenInterfaceGrpcExecption(int errorCode, String message) {
super(message);
this.errorCode = errorCode;
}
}
public static class OpenInterfaceGrpcTimeoutExecption extends OpenInterfaceGrpcExecption {
private static final int ERROR_CODE = 1;
public OpenInterfaceGrpcTimeoutExecption(String message) {
super(ERROR_CODE, message);
}
}
public OpenInterfaceGrpcClient(String host, int port) {
this(ManagedChannelBuilder.forAddress(host, port)
// Channels are secure by default (via SSL/TLS). For the example we disable TLS to avoid
// needing certificates.
.usePlaintext(true)
.build());
}
public OpenInterfaceGrpcClient(String host, int port, int timeout) {
this(host, port);
this.timeout = timeout;
}
OpenInterfaceGrpcClient(ManagedChannel channel) {
this.channel = channel;
blockingStub = OpenInterfaceGrpc.newBlockingStub(channel);
}
public void shutdown() throws InterruptedException {
channel.shutdown().awaitTermination(5, TimeUnit.SECONDS);
}
public Output invoke(Input input) throws OpenInterfaceGrpcTimeoutExecption {
logger.info("Input {}", input);
Output result = Output.newBuilder().build();
try {
result = blockingStub.withDeadlineAfter(timeout, TimeUnit.MILLISECONDS).invoke(input);
} catch (StatusRuntimeException e) {
logger.warn("RPC failed: {}", e.getStatus());
//Status{code=DEADLINE_EXCEEDED}
throw new OpenInterfaceGrpcTimeoutExecption(e.getMessage());
}
logger.info("Output: {}", result);
return result;
}
public Result remoteCli(Args args) throws OpenInterfaceGrpcTimeoutExecption {
logger.info("{}", args);
Result result = Result.newBuilder().setExitCode(1).build();
try {
result = blockingStub.withDeadlineAfter(timeout, TimeUnit.MILLISECONDS).remoteCli(args);
} catch (StatusRuntimeException e) {
logger.warn("RPC failed: {}", e.getStatus());
//Status{code=DEADLINE_EXCEEDED}
throw new OpenInterfaceGrpcTimeoutExecption(e.getMessage());
}
logger.info("Result: {}", result);
return result;
}
}
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