org.apache.blur.console.util.NodeUtil.java Source code

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Here is the source code for org.apache.blur.console.util.NodeUtil.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 org.apache.blur.console.util;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.URI;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.blur.thirdparty.thrift_0_9_0.TException;
import org.apache.commons.collections4.CollectionUtils;

public class NodeUtil {
    private static Set<String> onlineControllers = new HashSet<String>();
    private static Map<String, Set<String>> onlineShards = new HashMap<String, Set<String>>();

    @SuppressWarnings("unchecked")
    public static Map<String, Object> getControllerStatus() throws IOException, TException {
        CachingBlurClient client = Config.getCachingBlurClient();

        List<String> currentControllers = client.controllerList();

        Collection<String> newControllers = CollectionUtils.subtract(currentControllers, onlineControllers);
        Collection<String> missingControllers = CollectionUtils.subtract(onlineControllers, currentControllers);

        onlineControllers.addAll(newControllers);

        Map<String, Object> data = new HashMap<String, Object>();

        data.put("online", onlineControllers);
        data.put("offline", missingControllers);

        return data;
    }

    @SuppressWarnings("unchecked")
    public static List<Map<String, Object>> getClusterStatus() throws IOException, TException {
        List<Map<String, Object>> data = new ArrayList<Map<String, Object>>();
        CachingBlurClient client = Config.getCachingBlurClient();

        for (String cluster : client.shardClusterList()) {
            if (!onlineShards.containsKey(cluster)) {
                onlineShards.put(cluster, new HashSet<String>());
            }

            Set<String> onlineShardsForCluster = onlineShards.get(cluster);
            List<String> currentShards = client.shardList(cluster);

            Collection<String> newShards = CollectionUtils.subtract(currentShards, onlineShardsForCluster);
            Collection<String> missingShards = CollectionUtils.subtract(onlineShardsForCluster, currentShards);

            onlineShardsForCluster.addAll(newShards);

            Map<String, Object> clusterObj = new HashMap<String, Object>();
            clusterObj.put("name", cluster);
            clusterObj.put("online", onlineShardsForCluster);
            clusterObj.put("offline", missingShards);
            data.add(clusterObj);
        }

        return data;
    }

    public static Map<String, Object> getZookeeperStatus() throws IOException {
        String[] connections = Config.getBlurConfig().get("blur.zookeeper.connection").split(",");
        Set<String> onlineZookeepers = new HashSet<String>();
        Set<String> offlineZookeepers = new HashSet<String>();

        for (String connection : connections) {
            Socket socket = null;
            InputStream response = null;
            OutputStream question = null;
            try {
                URI parsedConnection = new URI("my://" + connection);
                String host = parsedConnection.getHost();
                int port = parsedConnection.getPort() >= 0 ? parsedConnection.getPort() : 2181;
                byte[] reqBytes = new byte[4];
                ByteBuffer req = ByteBuffer.wrap(reqBytes);
                req.putInt(ByteBuffer.wrap("ruok".getBytes()).getInt());
                socket = new Socket();
                socket.setSoLinger(false, 10);
                socket.setSoTimeout(20000);
                parsedConnection.getPort();
                socket.connect(new InetSocketAddress(host, port));

                response = socket.getInputStream();
                question = socket.getOutputStream();

                question.write(reqBytes);

                byte[] resBytes = new byte[4];

                response.read(resBytes);
                String status = new String(resBytes);
                if (status.equals("imok")) {
                    onlineZookeepers.add(connection);
                } else {
                    offlineZookeepers.add(connection);
                }
                socket.close();
                response.close();
                question.close();
            } catch (Exception e) {
                offlineZookeepers.add(connection);
            } finally {
                if (socket != null) {
                    socket.close();
                }
                if (response != null) {
                    response.close();
                }
                if (question != null) {
                    question.close();
                }
            }
        }

        Map<String, Object> data = new HashMap<String, Object>();

        data.put("online", onlineZookeepers);
        data.put("offline", offlineZookeepers);

        return data;
    }
}