com.google.pubsub.clients.adapter.AdapterTask.java Source code

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Here is the source code for com.google.pubsub.clients.adapter.AdapterTask.java

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// Copyright 2016 Google Inc.
//
// 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 com.google.pubsub.clients.adapter;

import com.beust.jcommander.Parameter;
import com.beust.jcommander.Parameters;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.pubsub.clients.common.MetricsHandler;
import com.google.pubsub.clients.common.Task;
import com.google.pubsub.clients.common.Task.RunResult;
import com.google.pubsub.flic.common.LoadtestProto;
import com.google.pubsub.flic.common.LoadtestWorkerGrpc;
import io.grpc.ManagedChannelBuilder;

/**
 * A Task that proxies commands to a LoadtestWorker process on localhost.
 */
public class AdapterTask extends Task {
    private final LoadtestWorkerGrpc.LoadtestWorkerFutureStub stub;

    public AdapterTask(LoadtestProto.StartRequest request, MetricsHandler.MetricName metricName, Options options) {
        super(request, "adapter", metricName);
        stub = LoadtestWorkerGrpc.newFutureStub(
                ManagedChannelBuilder.forAddress("localhost", options.workerPort).usePlaintext(true).build());
        try {
            stub.start(request).get();
        } catch (Throwable t) {
            throw new RuntimeException("Unable to start server.", t);
        }
    }

    @Override
    public ListenableFuture<RunResult> doRun() {
        return Futures.transform(stub.execute(LoadtestProto.ExecuteRequest.getDefaultInstance()),
                response -> RunResult.fromMessages(response.getReceivedMessagesList(),
                        response.getLatenciesList()));
    }

    /**
     * Contains the command line options for {@link AdapterTask}.
     */
    @Parameters(separators = "=")
    public static class Options {
        @Parameter(names = {
                "--worker_port" }, description = "The port that the LoadtestWorker process server is listening on.")
        int workerPort = 6000;
    }
}