Github user revans2 commented on a diff in the pull request:
https://github.com/apache/storm/pull/1642#discussion_r76609228
--- Diff:
storm-core/src/jvm/org/apache/storm/daemon/supervisor/BasicContainer.java ---
@@ -0,0 +1,569 @@
+/**
+ * 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.daemon.supervisor;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.commons.lang.StringUtils;
+import org.apache.storm.Config;
+import org.apache.storm.container.ResourceIsolationInterface;
+import org.apache.storm.generated.LocalAssignment;
+import org.apache.storm.generated.ProfileAction;
+import org.apache.storm.generated.ProfileRequest;
+import org.apache.storm.generated.StormTopology;
+import org.apache.storm.generated.WorkerResources;
+import org.apache.storm.utils.ConfigUtils;
+import org.apache.storm.utils.LocalState;
+import org.apache.storm.utils.Utils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.collect.Lists;
+
+/**
+ * A container that runs processes on the local box.
+ */
+public class BasicContainer extends Container {
+ private static final Logger LOG =
LoggerFactory.getLogger(BasicContainer.class);
+
+ protected final LocalState _localState;
+ protected final String _profileCmd;
+ protected volatile boolean _exitedEarly = false;
+
+ private class ProcessExitCallback implements ExitCodeCallback {
+ private final String _logPrefix;
+
+ public ProcessExitCallback(String logPrefix) {
+ _logPrefix = logPrefix;
+ }
+
+ @Override
+ public void call(int exitCode) {
+ LOG.info("{} exited with code: {}", _logPrefix, exitCode);
+ _exitedEarly = true;
+ }
+ }
+
+ public BasicContainer(int port, LocalAssignment assignment,
Map<String, Object> conf, String supervisorId,
+ LocalState localState, ResourceIsolationInterface
resourceIsolationManager, boolean recover)
+ throws IOException {
+ super(port, assignment, conf, supervisorId,
resourceIsolationManager);
+ _localState = localState;
+
+ if (recover) {
+ synchronized (localState) {
+ String wid = null;
+ Map<String, Integer> workerToPort =
localState.getApprovedWorkers();
+ for (Map.Entry<String, Integer> entry :
workerToPort.entrySet()) {
+ if (port == entry.getValue().intValue()) {
+ wid = entry.getKey();
+ }
+ }
+ if (wid == null) {
+ throw new ContainerRecoveryException("Could not find
worker id for " + port + " " + assignment);
+ }
+ _workerId = wid;
+ }
+ } else {
+ createNewWorkerId();
+ }
+
+ String stormHome = System.getProperty("storm.home");
+ _profileCmd = stormHome + Utils.FILE_PATH_SEPARATOR + "bin" +
Utils.FILE_PATH_SEPARATOR
+ + conf.get(Config.WORKER_PROFILER_COMMAND);
+ }
+
+ public BasicContainer(String workerId, Map<String, Object> conf,
String supervisorId,
+ ResourceIsolationInterface resourceIsolationManager) throws
IOException {
+ super(-1, null, conf, supervisorId, resourceIsolationManager);
+ _localState = null;
+ _workerId = workerId;
+ _profileCmd = null;
+ }
+
+ /**
+ * Create a new worker ID for this process and store in in this object
and
+ * in the local state. Never call this if a worker is currently up
and running.
+ * We will lose track of the process.
+ */
+ protected void createNewWorkerId() {
+ if (_port <= 0) {
+ throw new IllegalStateException(
+ "Cannot create a worker id for a container recovered
with just a worker id");
+ }
+ synchronized (_localState) {
+ _workerId = Utils.uuid();
+ Map<String, Integer> workerToPort =
_localState.getApprovedWorkers();
+ if (workerToPort == null) {
+ workerToPort = new HashMap<>(1);
+ }
+ workerToPort.put(_workerId, _port);
+ _localState.setApprovedWorkers(workerToPort);
+ }
+ }
+
+ @Override
+ public void cleanUp() throws IOException {
+ cleanUpForRestart();
+ synchronized (_localState) {
+ Map<String, Integer> workersToPort =
_localState.getApprovedWorkers();
+ workersToPort.remove(_workerId);
+ _localState.setApprovedWorkers(workersToPort);
+ }
+ }
+
+ @Override
+ public void relaunch() throws IOException {
+ createNewWorkerId();
+ launch();
+ }
+
+ @Override
+ public boolean didMainProcessExit() {
+ return _exitedEarly;
+ }
+
+ /**
+ * Run the given command for profiling
+ *
+ * @param command
+ * the command to run
+ * @param env
+ * the environment to run the command
+ * @param logPrefix
+ * the prefix to include in the logs
+ * @param targetDir
+ * the working directory to run the command in
+ * @return true if it ran successfully, else false
+ * @throws IOException
+ * on any error
+ * @throws InterruptedException
+ * if interrupted wile waiting for the process to exit.
+ */
+ protected boolean runProfilingCommand(List<String> command,
Map<String, String> env, String logPrefix,
+ File targetDir) throws IOException, InterruptedException {
+ Process p = SupervisorUtils.launchProcess(command, env, logPrefix,
null, targetDir);
+ int ret = p.waitFor();
+ return ret == 0;
+ }
+
+ @Override
+ public boolean runProfiling(ProfileRequest request, boolean stop)
throws IOException, InterruptedException {
+ if (_port <= 0) {
+ throw new IllegalStateException("Cannot profile a container
recovered with just a worker id");
+ }
+ String targetDir = ConfigUtils.workerArtifactsRoot(_conf,
_topologyId, _port);
+
+ @SuppressWarnings("unchecked")
+ Map<String, String> env = (Map<String, String>)
_topoConf.get(Config.TOPOLOGY_ENVIRONMENT);
+ if (env == null) {
+ env = new HashMap<String, String>();
+ }
+
+ String str = ConfigUtils.workerArtifactsPidPath(_conf,
_topologyId, _port);
+
+ String workerPid = null;
+ try (FileReader reader = new FileReader(str); BufferedReader br =
new BufferedReader(reader)) {
+ workerPid = br.readLine().trim();
+ }
+
+ ProfileAction profileAction = request.get_action();
+ String logPrefix = "ProfilerAction process " + _topologyId + ":" +
_port + " PROFILER_ACTION: " + profileAction
+ + " ";
+
+ List<String> command = mkProfileCommand(profileAction, stop,
workerPid, targetDir);
+
+ File targetFile = new File(targetDir);
+ return runProfilingCommand(command, env, logPrefix, targetFile);
+ }
+
+ /**
+ * Get the command to run when doing profiling
+ * @param action the profiling action to perform
+ * @param stop if this is meant to stop the profiling or start it
+ * @param workerPid the PID of the process to profile
+ * @param targetDir the current working directory of the worker process
+ * @return the command to run for profiling.
+ */
+ private List<String> mkProfileCommand(ProfileAction action, boolean
stop, String workerPid, String targetDir) {
+ if (action == ProfileAction.JMAP_DUMP) {
--- End diff --
I copied and pasted this, but I agree a switch would be cleaner.
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