Github user redsanket commented on a diff in the pull request:
https://github.com/apache/storm/pull/1195#discussion_r56382441
--- Diff: storm-core/src/jvm/org/apache/storm/pacemaker/Pacemaker.java ---
@@ -0,0 +1,246 @@
+/**
+ * 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.storm.pacemaker;
+
+import org.apache.storm.generated.*;
+import org.apache.storm.utils.ConfigUtils;
+import org.apache.storm.utils.Utils;
+import org.apache.storm.utils.VersionInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import uk.org.lidalia.sysoutslf4j.context.SysOutOverSLF4J;
+
+import java.util.*;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class Pacemaker implements IServerMessageHandler {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(Pacemaker.class);
+
+ private Map<String, byte[]> heartbeats;
+ private PacemakerStats pacemakerStats;
+ private Map conf;
+ private final long sleepSeconds = 60;
+
+ private static class PacemakerStats {
+ public AtomicInteger sendPulseCount = new AtomicInteger();
+ public AtomicInteger totalReceivedSize = new AtomicInteger();
+ public AtomicInteger getPulseCount = new AtomicInteger();
+ public AtomicInteger totalSentSize = new AtomicInteger();
+ public AtomicInteger largestHeartbeatSize = new AtomicInteger();
+ public AtomicInteger averageHeartbeatSize = new AtomicInteger();
+ }
+
+ public Pacemaker(Map conf) {
+ heartbeats = new ConcurrentHashMap();
+ pacemakerStats = new PacemakerStats();
+ this.conf = conf;
+ startStatsThread();
+ }
+
+ @Override
+ public HBMessage handleMessage(HBMessage m, boolean authenticated) {
+ HBMessage response = null;
+ HBMessageData data = m.get_data();
+ switch (m.get_type()) {
+ case CREATE_PATH:
+ response = createPath(data.get_path());
+ break;
+ case EXISTS:
+ response = exists(data.get_path(), authenticated);
+ break;
+ case SEND_PULSE:
+ response = sendPulse(data.get_pulse());
+ break;
+ case GET_ALL_PULSE_FOR_PATH:
+ response = getAllPulseForPath(data.get_path(), authenticated);
+ break;
+ case GET_ALL_NODES_FOR_PATH:
+ response = getAllNodesForPath(data.get_path(), authenticated);
+ break;
+ case GET_PULSE:
+ response = getPulse(data.get_path(), authenticated);
+ break;
+ case DELETE_PATH:
+ response = deletePath(data.get_path());
+ break;
+ case DELETE_PULSE_ID:
+ response = deletePulseId(data.get_path());
+ break;
+ default:
+ LOG.info("Got Unexpected Type: {}", m.get_type());
+ break;
+ }
+ if (response != null)
+ response.set_message_id(m.get_message_id());
+ return response;
+ }
+
+ private HBMessage createPath(String path) {
+ return new HBMessage(HBServerMessageType.CREATE_PATH_RESPONSE,
null);
+ }
+
+ private HBMessage exists(String path, boolean authenticated) {
+ HBMessage response = null;
+ if (authenticated) {
+ boolean itDoes = heartbeats.containsKey(path);
--- End diff --
can it be renamed to pathExists?
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