Github user revans2 commented on a diff in the pull request:
https://github.com/apache/storm/pull/1257#discussion_r57897402
--- Diff:
storm-core/src/jvm/org/apache/storm/daemon/supervisor/SyncProcessEvent.java ---
@@ -0,0 +1,427 @@
+/**
+ * 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 org.apache.commons.io.FileUtils;
+import org.apache.commons.lang.StringUtils;
+import org.apache.storm.Config;
+import org.apache.storm.container.cgroup.CgroupManager;
+import org.apache.storm.daemon.supervisor.workermanager.IWorkerManager;
+import org.apache.storm.generated.ExecutorInfo;
+import org.apache.storm.generated.LSWorkerHeartbeat;
+import org.apache.storm.generated.LocalAssignment;
+import org.apache.storm.generated.WorkerResources;
+import org.apache.storm.utils.ConfigUtils;
+import org.apache.storm.utils.LocalState;
+import org.apache.storm.utils.Time;
+import org.apache.storm.utils.Utils;
+import org.eclipse.jetty.util.ConcurrentHashSet;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.yaml.snakeyaml.Yaml;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.*;
+
+/**
+ * 1. to kill are those in allocated that are dead or disallowed 2. kill
the ones that should be dead - read pids, kill -9 and individually remove file
- rmr
+ * heartbeat dir, rmdir pid dir, rmdir id dir (catch exception and log) 3.
of the rest, figure out what assignments aren't yet satisfied 4. generate new
worker
+ * ids, write new "approved workers" to LS 5. create local dir for worker
id 5. launch new workers (give worker-id, port, and supervisor-id) 6. wait for
workers
+ * launch
+ */
+public class SyncProcessEvent implements Runnable {
+
+ private static Logger LOG =
LoggerFactory.getLogger(SyncProcessEvent.class);
+
+ private LocalState localState;
+ private SupervisorData supervisorData;
+ public static final ExecutorInfo SYSTEM_EXECUTOR_INFO = new
ExecutorInfo(-1, -1);
+
+ private class ProcessExitCallback implements Utils.ExitCodeCallable {
+ private final String logPrefix;
+ private final String workerId;
+
+ public ProcessExitCallback(String logPrefix, String workerId) {
+ this.logPrefix = logPrefix;
+ this.workerId = workerId;
+ }
+
+ @Override
+ public Object call() throws Exception {
+ return null;
+ }
+
+ @Override
+ public Object call(int exitCode) {
+ LOG.info("{} exited with code: {}", logPrefix, exitCode);
+ supervisorData.getDeadWorkers().add(workerId);
+ return null;
+ }
+ }
+
+ public SyncProcessEvent(){
+
+ }
+ public SyncProcessEvent(SupervisorData supervisorData) {
+ init(supervisorData);
+ }
+
+ public void init(SupervisorData supervisorData){
+ this.supervisorData = supervisorData;
+ this.localState = supervisorData.getLocalState();
+ }
+
+ @Override
+ public void run() {
+ LOG.debug("Syncing processes");
+ try {
+ Map conf = supervisorData.getConf();
+ Map<Integer, LocalAssignment> assignedExecutors =
localState.getLocalAssignmentsMap();
+
+ if (assignedExecutors == null) {
+ assignedExecutors = new HashMap<>();
+ }
+ int now = Time.currentTimeSecs();
+
+ Map<String, StateHeartbeat> localWorkerStats =
getLocalWorkerStats(supervisorData, assignedExecutors, now);
+
+ Set<String> keeperWorkerIds = new HashSet<>();
+ Set<Integer> keepPorts = new HashSet<>();
+ for (Map.Entry<String, StateHeartbeat> entry :
localWorkerStats.entrySet()) {
+ StateHeartbeat stateHeartbeat = entry.getValue();
+ if (stateHeartbeat.getState() == State.VALID) {
+ keeperWorkerIds.add(entry.getKey());
+
keepPorts.add(stateHeartbeat.getHeartbeat().get_port());
+ }
+ }
+ Map<Integer, LocalAssignment> reassignExecutors =
getReassignExecutors(assignedExecutors, keepPorts);
+ Map<Integer, String> newWorkerIds = new HashMap<>();
+ for (Integer port : reassignExecutors.keySet()) {
+ newWorkerIds.put(port, Utils.uuid());
+ }
+ LOG.debug("Syncing processes");
+ LOG.debug("Assigned executors: {}", assignedExecutors);
+ LOG.debug("Allocated: {}", localWorkerStats);
+
+ for (Map.Entry<String, StateHeartbeat> entry :
localWorkerStats.entrySet()) {
+ StateHeartbeat stateHeartbeat = entry.getValue();
+ if (stateHeartbeat.getState() != State.VALID) {
+ LOG.info("Shutting down and clearing state for id {},
Current supervisor time: {}, State: {}, Heartbeat: {}", entry.getKey(), now,
+ stateHeartbeat.getState(),
stateHeartbeat.getHeartbeat());
+ killWorker(supervisorData,
supervisorData.getWorkerManager(), entry.getKey());
+ }
+ }
+ // start new workers
+ Map<String, Integer> newWorkerPortToIds =
startNewWorkers(newWorkerIds, reassignExecutors);
+
+ Map<String, Integer> allWorkerPortToIds = new HashMap<>();
+ Map<String, Integer> approvedWorkers =
localState.getApprovedWorkers();
+ for (String keeper : keeperWorkerIds) {
+ allWorkerPortToIds.put(keeper,
approvedWorkers.get(keeper));
+ }
+ allWorkerPortToIds.putAll(newWorkerPortToIds);
+ localState.setApprovedWorkers(allWorkerPortToIds);
+ waitForWorkersLaunch(conf, newWorkerPortToIds.keySet());
+
+ } catch (Exception e) {
+ LOG.error("Failed Sync Process", e);
+ throw Utils.wrapInRuntime(e);
+ }
+
+ }
+
+ protected void waitForWorkersLaunch(Map conf, Set<String> workerIds)
throws Exception {
+ int startTime = Time.currentTimeSecs();
+ int timeOut = (int)
conf.get(Config.NIMBUS_SUPERVISOR_TIMEOUT_SECS);
+ for (String workerId : workerIds) {
+ LocalState localState = ConfigUtils.workerState(conf,
workerId);
+ while (true) {
+ LSWorkerHeartbeat hb = localState.getWorkerHeartBeat();
+ if (hb != null || (Time.currentTimeSecs() - startTime) >
timeOut)
+ break;
+ LOG.info("{} still hasn't started", workerId);
+ Time.sleep(500);
+ }
+ if (localState.getWorkerHeartBeat() == null) {
+ LOG.info("Worker {} failed to start", workerId);
+ }
+ }
+ }
+
+ protected Map<Integer, LocalAssignment>
getReassignExecutors(Map<Integer, LocalAssignment> assignExecutors,
Set<Integer> keepPorts) {
+ Map<Integer, LocalAssignment> reassignExecutors = new HashMap<>();
+ reassignExecutors.putAll(assignExecutors);
+ for (Integer port : keepPorts) {
+ reassignExecutors.remove(port);
+ }
+ return reassignExecutors;
+ }
+
+ /**
+ * Returns map from worker id to worker heartbeat. if the heartbeat is
nil, then the worker is dead
+ *
+ * @param assignedExecutors
+ * @return
+ * @throws Exception
+ */
+ public Map<String, StateHeartbeat> getLocalWorkerStats(SupervisorData
supervisorData, Map<Integer, LocalAssignment> assignedExecutors, int now)
throws Exception {
+ Map<String, StateHeartbeat> workerIdHbstate = new HashMap<>();
+ Map conf = supervisorData.getConf();
+ LocalState localState = supervisorData.getLocalState();
+ Map<String, LSWorkerHeartbeat> idToHeartbeat =
SupervisorUtils.readWorkerHeartbeats(conf);
+ Map<String, Integer> approvedWorkers =
localState.getApprovedWorkers();
+ Set<String> approvedIds = new HashSet<>();
+ if (approvedWorkers != null) {
+ approvedIds.addAll(approvedWorkers.keySet());
+ }
+ for (Map.Entry<String, LSWorkerHeartbeat> entry :
idToHeartbeat.entrySet()) {
+ String workerId = entry.getKey();
+ LSWorkerHeartbeat whb = entry.getValue();
+ State state;
+ if (whb == null) {
+ state = State.NOT_STARTED;
+ } else if (!approvedIds.contains(workerId) ||
!matchesAssignment(whb, assignedExecutors)) {
+ state = State.DISALLOWED;
+ } else if (supervisorData.getDeadWorkers().contains(workerId))
{
+ LOG.info("Worker Process {} has died", workerId);
+ state = State.TIMED_OUT;
+ } else if (SupervisorUtils.isWorkerHbTimedOut(now, whb, conf))
{
+ state = State.TIMED_OUT;
+ } else {
+ state = State.VALID;
+ }
+ LOG.debug("Worker:{} state:{} WorkerHeartbeat:{} at supervisor
time-secs {}", workerId, state, whb, now);
+ workerIdHbstate.put(workerId, new StateHeartbeat(state, whb));
+ }
+ return workerIdHbstate;
+ }
+
+ protected boolean matchesAssignment(LSWorkerHeartbeat whb,
Map<Integer, LocalAssignment> assignedExecutors) {
+ LocalAssignment localAssignment =
assignedExecutors.get(whb.get_port());
+ if (localAssignment == null ||
!localAssignment.get_topology_id().equals(whb.get_topology_id())) {
+ return false;
+ }
+ List<ExecutorInfo> executorInfos = new ArrayList<>();
+ executorInfos.addAll(whb.get_executors());
+ // remove SYSTEM_EXECUTOR_ID
+ executorInfos.remove(SYSTEM_EXECUTOR_INFO);
+ List<ExecutorInfo> localExecuorInfos =
localAssignment.get_executors();
+
+ if (localExecuorInfos.size() != executorInfos.size())
+ return false;
+
+ for (ExecutorInfo executorInfo : localExecuorInfos){
+ if (!localExecuorInfos.contains(executorInfo))
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * launch a worker in local mode.
+ */
+ protected void launchLocalWorker(SupervisorData supervisorData, String
stormId, Long port, String workerId, WorkerResources resources) throws
IOException {
+ // port this function after porting worker to java
+ }
+
+ protected void launchDistributedWorker(IWorkerManager workerManager,
Map conf, String supervisorId, String assignmentId, String stormId, Long port,
String workerId,
+ WorkerResources resources,
ConcurrentHashSet deadWorkers) throws IOException {
+ Map stormConf = ConfigUtils.readSupervisorStormConf(conf, stormId);
+ String user = (String)
stormConf.get(Config.TOPOLOGY_SUBMITTER_USER);
+ writeLogMetadata(stormConf, user, workerId, stormId, port, conf);
+ ConfigUtils.setWorkerUserWSE(conf, workerId, user);
+ createArtifactsLink(conf, stormId, port, workerId);
+
+ String logPrefix = "Worker Process " + workerId;
+ if (deadWorkers != null)
+ deadWorkers.remove(workerId);
+ createBlobstoreLinks(conf, stormId, workerId);
+ ProcessExitCallback processExitCallback = new
ProcessExitCallback(logPrefix, workerId);
+ workerManager.launchWorker(supervisorId, assignmentId, stormId,
port, workerId, resources, processExitCallback);
+ }
+
+ protected Map<String, Integer> startNewWorkers(Map<Integer, String>
newWorkerIds, Map<Integer, LocalAssignment> reassignExecutors) throws
IOException {
+
+ Map<String, Integer> newValidWorkerIds = new HashMap<>();
+ Map conf = supervisorData.getConf();
+ String supervisorId = supervisorData.getSupervisorId();
+ String clusterMode = ConfigUtils.clusterMode(conf);
+
+ for (Map.Entry<Integer, LocalAssignment> entry :
reassignExecutors.entrySet()) {
+ Integer port = entry.getKey();
+ LocalAssignment assignment = entry.getValue();
+ String workerId = newWorkerIds.get(port);
+ String stormId = assignment.get_topology_id();
+ WorkerResources resources = assignment.get_resources();
+
+ // This condition checks for required files exist before
launching the worker
+ if (SupervisorUtils.doRequiredTopoFilesExist(conf, stormId)) {
+ String pidsPath = ConfigUtils.workerPidsRoot(conf,
workerId);
+ String hbPath = ConfigUtils.workerHeartbeatsRoot(conf,
workerId);
+
+ LOG.info("Launching worker with assignment {} for this
supervisor {} on port {} with id {}", assignment,
supervisorData.getSupervisorId(), port,
+ workerId);
+
+ FileUtils.forceMkdir(new File(pidsPath));
+ FileUtils.forceMkdir(new
File(ConfigUtils.workerTmpRoot(conf, workerId)));
+ FileUtils.forceMkdir(new File(hbPath));
+
+ if (clusterMode.endsWith("distributed")) {
+
launchDistributedWorker(supervisorData.getWorkerManager(), conf, supervisorId,
supervisorData.getAssignmentId(), stormId, port.longValue(), workerId,
resources, supervisorData.getDeadWorkers());
+ } else if (clusterMode.endsWith("local")) {
+ launchLocalWorker(supervisorData, stormId,
port.longValue(), workerId, resources);
+ }
+ newValidWorkerIds.put(workerId, port);
+
+ } else {
+ LOG.info("Missing topology storm code, so can't launch
worker with assignment {} for this supervisor {} on port {} with id {}",
assignment,
+ supervisorData.getSupervisorId(), port, workerId);
+ }
+
+ }
+ return newValidWorkerIds;
+ }
+
+ public void writeLogMetadata(Map stormconf, String user, String
workerId, String stormId, Long port, Map conf) throws IOException {
+ Map data = new HashMap();
+ data.put(Config.TOPOLOGY_SUBMITTER_USER, user);
+ data.put("worker-id", workerId);
+
+ Set<String> logsGroups = new HashSet<>();
+ //for supervisor-test
+ if (stormconf.get(Config.LOGS_GROUPS) != null) {
+ List<String> groups = (List<String>)
stormconf.get(Config.LOGS_GROUPS);
+ for (String group : groups){
+ logsGroups.add(group);
+ }
+ }
+ if (stormconf.get(Config.TOPOLOGY_GROUPS) != null) {
+ List<String> topGroups = (List<String>)
stormconf.get(Config.TOPOLOGY_GROUPS);
+ logsGroups.addAll(topGroups);
+ }
+ data.put(Config.LOGS_GROUPS, logsGroups.toArray());
+
+ Set<String> logsUsers = new HashSet<>();
+ if (stormconf.get(Config.LOGS_USERS) != null) {
+ List<String> logUsers = (List<String>)
stormconf.get(Config.LOGS_USERS);
+ for (String logUser : logUsers){
+ logsUsers.add(logUser);
+ }
+ }
+ if (stormconf.get(Config.TOPOLOGY_USERS) != null) {
+ List<String> topUsers = (List<String>)
stormconf.get(Config.TOPOLOGY_USERS);
+ for (String logUser : topUsers){
+ logsUsers.add(logUser);
+ }
+ }
+ data.put(Config.LOGS_USERS, logsUsers.toArray());
+ writeLogMetadataToYamlFile(stormId, port, data, conf);
+ }
+
+ /**
+ * run worker as user needs the directory to have special permissions
or it is insecure
+ *
+ * @param stormId
+ * @param port
+ * @param data
+ * @param conf
+ * @throws IOException
+ */
+ public void writeLogMetadataToYamlFile(String stormId, Long port, Map
data, Map conf) throws IOException {
+ File file = ConfigUtils.getLogMetaDataFile(conf, stormId,
port.intValue());
+
+ if (!Utils.checkFileExists(file.getParent())) {
+ if
(Utils.getBoolean(conf.get(Config.SUPERVISOR_RUN_WORKER_AS_USER), false)) {
+ FileUtils.forceMkdir(file.getParentFile());
+ SupervisorUtils.setupStormCodeDir(conf,
ConfigUtils.readSupervisorStormConf(conf, stormId),
file.getParentFile().getCanonicalPath());
+ } else {
+ file.getParentFile().mkdirs();
+ }
+ }
+ FileWriter writer = new FileWriter(file);
+ Yaml yaml = new Yaml();
+ try {
+ yaml.dump(data, writer);
+ }finally {
+ writer.close();
+ }
+ }
+
+ /**
+ * Create a symlink from workder directory to its port artifacts
directory
+ *
+ * @param conf
+ * @param stormId
+ * @param port
+ * @param workerId
+ */
+ protected void createArtifactsLink(Map conf, String stormId, Long
port, String workerId) throws IOException {
+ String workerDir = ConfigUtils.workerRoot(conf, workerId);
+ String topoDir = ConfigUtils.workerArtifactsRoot(conf, stormId);
+ if (Utils.checkFileExists(workerDir)) {
--- End diff --
Minor there was a log message here, would be nice to at least still have a
debug message for it.
```
(log-message "Creating symlinks for worker-id: " worker-id " storm-id: "
storm-id " to its port artifacts directory")
```
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