Github user HeartSaVioR commented on a diff in the pull request:
https://github.com/apache/storm/pull/2433#discussion_r152897084
--- Diff:
storm-server/src/main/java/org/apache/storm/daemon/supervisor/timer/ReportWorkerHeartbeats.java
---
@@ -0,0 +1,119 @@
+/**
+ * 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
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * 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.daemon.supervisor.timer;
+
+import org.apache.storm.daemon.supervisor.Supervisor;
+import org.apache.storm.daemon.supervisor.SupervisorUtils;
+import org.apache.storm.generated.LSWorkerHeartbeat;
+import org.apache.storm.generated.SupervisorWorkerHeartbeat;
+import org.apache.storm.generated.SupervisorWorkerHeartbeats;
+import org.apache.storm.utils.ConfigUtils;
+import org.apache.storm.utils.NimbusClient;
+import org.apache.thrift.TException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Runnable reporting local worker reported heartbeats to master,
supervisor should take care the of the heartbeats
+ * integrity for the master heartbeats recovery, a non-null node id means
that the heartbeats are full,
+ * and master can go on to check and wait others nodes when doing a
heartbeats recovery.
+ */
+public class ReportWorkerHeartbeats implements Runnable {
+ private static final Logger LOG =
LoggerFactory.getLogger(ReportWorkerHeartbeats.class);
+
+ private Supervisor supervisor;
+ private Map<String, Object> conf;
+
+ public ReportWorkerHeartbeats(Map<String, Object> conf, Supervisor
supervisor) {
+ this.conf = conf;
+ this.supervisor = supervisor;
+ }
+
+ @Override
+ public void run() {
+ SupervisorWorkerHeartbeats supervisorWorkerHeartbeats =
getAndResetWorkerHeartbeats();
+ reportWorkerHeartbeats(supervisorWorkerHeartbeats);
+ }
+
+ private SupervisorWorkerHeartbeats getAndResetWorkerHeartbeats() {
+ Map<String, LSWorkerHeartbeat> localHeartbeats;
+ try {
+ localHeartbeats =
SupervisorUtils.readWorkerHeartbeats(this.conf);
+ return getSupervisorWorkerHeartbeatsFromLocal(localHeartbeats);
+ } catch (Exception e) {
+ LOG.error("Read local worker heartbeats error, skipping
heartbeats for this round, msg:{}", e.getMessage());
+ return null;
+ }
+ }
+
+ private SupervisorWorkerHeartbeats
getSupervisorWorkerHeartbeatsFromLocal(Map<String, LSWorkerHeartbeat>
localHeartbeats) {
+ SupervisorWorkerHeartbeats supervisorWorkerHeartbeats = new
SupervisorWorkerHeartbeats();
+
+ List<SupervisorWorkerHeartbeat> heartbeatList = new ArrayList<>();
+
+ for (Map.Entry<String, LSWorkerHeartbeat> lsWorkerHeartbeatEntry :
localHeartbeats.entrySet()) {
--- End diff --
We could simplify logic using stream:
```
List<SupervisorWorkerHeartbeat> heartbeatList =
localHeartbeats.values().stream()
.filter(Objects::nonNull).map(hb -> {
SupervisorWorkerHeartbeat supervisorWorkerHeartbeat = new
SupervisorWorkerHeartbeat();
supervisorWorkerHeartbeat.set_storm_id(lsWorkerHeartbeat.get_topology_id());
supervisorWorkerHeartbeat.set_executors(lsWorkerHeartbeat.get_executors());
supervisorWorkerHeartbeat.set_time_secs(lsWorkerHeartbeat.get_time_secs());
return supervisorWorkerHeartbeat;
}).collect(toList());
```
or at least use values() instead of entrySet() given that we don't use keys
at all.
---
