com.wenyu.clustertools.SetStreamThroughput.java Source code

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Here is the source code for com.wenyu.clustertools.SetStreamThroughput.java

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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 com.wenyu.clustertools;

import com.wenyu.utils.AsyncTask;
import com.wenyu.utils.ClusterToolNodeProbe;
import com.wenyu.utils.Constants;
import io.airlift.command.Arguments;
import io.airlift.command.Command;
import io.airlift.command.Option;
import org.apache.cassandra.tools.NodeProbe;
import org.apache.cassandra.tools.NodeTool.NodeToolCmd;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import static org.apache.commons.lang3.StringUtils.EMPTY;

@Command(name = "setstreamthroughput", description = "Set the Mb/s throughput cap for streaming in the system, or 0 to disable throttling")
public class SetStreamThroughput extends ClusterToolCmd {
    @Arguments(title = "stream_throughput", usage = "<value_in_mb>", description = "Value in Mb, 0 to disable throttling", required = true)
    private Integer streamThroughput = null;

    @Option(title = "parallel executor", name = { "-p",
            "--par-jobs" }, description = "Number of threads to get timeout of all nodes.")
    private int parallel = 1;

    @Override
    public void execute() {
        ExecutorService executor = Executors.newFixedThreadPool(parallel);

        Map<Node, Future<String>> futures = new HashMap<>();
        for (ClusterToolCmd.Node node : nodes) {
            futures.put(node, executor.submit(new Executor(node)));
        }

        for (Map.Entry<ClusterToolCmd.Node, Future<String>> future : futures.entrySet()) {
            try {
                String result = future.getValue().get(Constants.MAX_PARALLEL_WAIT_IN_SEC, TimeUnit.SECONDS);
                System.out.println(result);
            } catch (Exception ex) {
                System.out
                        .println(String.format("%s failed with error: %s", future.getKey().server, ex.toString()));
                ex.printStackTrace();
            }
        }
    }

    private class Executor extends AsyncTask<String> {
        private ClusterToolCmd.Node node;

        public Executor(ClusterToolCmd.Node node) {
            this.node = node;
        }

        @Override
        public String execute() {
            ClusterToolNodeProbe probe = connect(node);
            probe.setStreamThroughput(streamThroughput);
            return "Finished set stream throughput on " + node.server + " to " + streamThroughput + "Mb/s";
        }
    }
}