From efff409c5850df93e9fb4f6123fd2818353668b9 Mon Sep 17 00:00:00 2001
From: Simon Brandhof <simon.brandhof@sonarsource.com>
Date: Tue, 4 Oct 2016 14:46:47 +0200
Subject: Fix Quality flaws, including handling of InterruptedException

---
 .../main/java/org/sonar/process/monitor/Monitor.java   | 18 ++++++++++++------
 .../java/org/sonar/process/monitor/ProcessRef.java     |  9 +++------
 2 files changed, 15 insertions(+), 12 deletions(-)

(limited to 'server/sonar-process-monitor')

diff --git a/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/Monitor.java b/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/Monitor.java
index 6b62cafd60c..182155ff9fb 100644
--- a/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/Monitor.java
+++ b/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/Monitor.java
@@ -82,7 +82,7 @@ public class Monitor {
    * @throws java.lang.IllegalStateException if already started or if at least one process failed to start. In this case
    *   all processes are terminated. No need to execute {@link #stop()}
    */
-  public void start(List<JavaCommand> commands) {
+  public void start(List<JavaCommand> commands) throws InterruptedException {
     if (commands.isEmpty()) {
       throw new IllegalArgumentException("At least one command is required");
     }
@@ -101,7 +101,7 @@ public class Monitor {
     startProcesses();
   }
 
-  private void startProcesses() {
+  private void startProcesses() throws InterruptedException {
     // do no start any child process if not in state INIT or RESTARTING (a stop could be in progress too)
     if (lifecycle.tryToMoveTo(State.STARTING)) {
       resetFileSystem();
@@ -137,14 +137,14 @@ public class Monitor {
     }
   }
 
-  private void startAndMonitorProcesses() {
+  private void startAndMonitorProcesses() throws InterruptedException{
     File tempDir = fileSystem.getTempDir();
     this.launcher = new JavaProcessLauncher(TIMEOUTS, tempDir);
     for (JavaCommand command : javaCommands) {
       try {
         ProcessRef processRef = launcher.launch(command);
         monitor(processRef);
-      } catch (RuntimeException e) {
+      } catch (InterruptedException | RuntimeException e) {
         // fail to start or to monitor
         stop();
         throw e;
@@ -152,7 +152,7 @@ public class Monitor {
     }
   }
 
-  private void monitor(ProcessRef processRef) {
+  private void monitor(ProcessRef processRef) throws InterruptedException {
     // physically watch if process is alive
     WatcherThread watcherThread = new WatcherThread(processRef, this);
     watcherThread.start();
@@ -283,7 +283,13 @@ public class Monitor {
     @Override
     public void run() {
       stopProcesses();
-      startProcesses();
+      try {
+        startProcesses();
+      } catch (InterruptedException e) {
+        // Startup was interrupted. Processes are being stopped asynchronously.
+        // Restoring the interruption state.
+        Thread.currentThread().interrupt();
+      }
     }
   }
 
diff --git a/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/ProcessRef.java b/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/ProcessRef.java
index d3523ed2ed4..83d8bb14c30 100644
--- a/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/ProcessRef.java
+++ b/server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/ProcessRef.java
@@ -58,18 +58,14 @@ class ProcessRef {
     return commands;
   }
 
-  void waitForUp() {
+  void waitForUp() throws InterruptedException {
     boolean up = false;
     while (!up) {
       if (isStopped()) {
         throw new MessageException(String.format("%s failed to start", this));
       }
       up = commands.isUp();
-      try {
-        Thread.sleep(200L);
-      } catch (InterruptedException e) {
-        throw new IllegalStateException(String.format("Interrupted while waiting for %s to be up", this), e);
-      }
+      Thread.sleep(200L);
     }
   }
 
@@ -98,6 +94,7 @@ class ProcessRef {
       } catch (InterruptedException e) {
         // can't wait for the termination of process. Let's assume it's down.
         LoggerFactory.getLogger(getClass()).warn(String.format("Interrupted while stopping process %s", key), e);
+        Thread.currentThread().interrupt();
       }
     }
     ProcessUtils.closeStreams(process);
-- 
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