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[tor-commits] [onionoo/master] task-14826: depending on the starting time the updater will run every hour at minute 15, 16, 17, 18, or 19. The Lock file ist only used for the single run.



commit 753f63bc3c08c46094a861f1bede5d1fd61f2bd2
Author: iwakeh <iwakeh@xxxxxxxxxxxxxxxxxxxx>
Date:   Sun Feb 15 18:00:00 2015 +0000

    task-14826: depending on the starting time the updater will run every hour at minute 15,16,17,18,or 19. The Lock file ist only used for the single run.
---
 .../java/org/torproject/onionoo/cron/Main.java     |  140 +++++++++++++-------
 1 file changed, 90 insertions(+), 50 deletions(-)

diff --git a/src/main/java/org/torproject/onionoo/cron/Main.java b/src/main/java/org/torproject/onionoo/cron/Main.java
index 986f22d..c098dfe 100644
--- a/src/main/java/org/torproject/onionoo/cron/Main.java
+++ b/src/main/java/org/torproject/onionoo/cron/Main.java
@@ -2,6 +2,11 @@
  * See LICENSE for licensing information */
 package org.torproject.onionoo.cron;
 
+import java.util.Calendar;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.torproject.onionoo.docs.DocumentStore;
@@ -20,61 +25,96 @@ public class Main {
   private Main() {
   }
 
+  private static final ScheduledExecutorService scheduler =
+      Executors.newScheduledThreadPool(1);
+
   public static void main(String[] args) {
-    log.debug("Started ...");
-    LockFile lf = new LockFile();
-    log.info("Initializing.");
-    if (lf.acquireLock()) {
-      log.info("Acquired lock");
-    } else {
-      log.error("Could not acquire lock.  Is Onionoo "
-          + "already running?  Terminating");
+    boolean runOnce = "true".equals(System.getProperty(
+        "onionoo.cron.runonce", "true"));
+    if (runOnce){
+      log.info("Going to run one-time updater ... ");
+      LockFile lf = new LockFile();
+      log.info("Initializing.");
+      if (lf.acquireLock()) {
+        log.info("Acquired lock");
+      } else {
+        log.error("Could not acquire lock.  Is Onionoo already running?  "
+            + "Terminating");
+        return;
+      }
+      new Updater().run();
+      log.info("Releasing lock.");
+      if (lf.releaseLock()) {
+        log.info("Released lock");
+      } else {
+        log.error("Could not release lock.  The next execution may not "
+            + "start as expected");
+      }
       return;
-    }
-    log.debug(" ... running .... ");
-
-    DescriptorSource dso = DescriptorSourceFactory.getDescriptorSource();
-    log.info("Initialized descriptor source");
-    DocumentStore ds = DocumentStoreFactory.getDocumentStore();
-    log.info("Initialized document store");
-    StatusUpdateRunner sur = new StatusUpdateRunner();
-    log.info("Initialized status update runner");
-    DocumentWriterRunner dwr = new DocumentWriterRunner();
-    log.info("Initialized document writer runner");
-
-    log.info("Downloading descriptors.");
-    dso.downloadDescriptors();
-
-    log.info("Reading descriptors.");
-    dso.readDescriptors();
-
-    log.info("Updating internal status files.");
-    sur.updateStatuses();
-
-    log.info("Updating document files.");
-    dwr.writeDocuments();
-
-    log.info("Shutting down.");
-    dso.writeHistoryFiles();
-    log.info("Wrote parse histories");
-    ds.flushDocumentCache();
-    log.info("Flushed document cache");
-
-    log.info("Gathering statistics.");
-    sur.logStatistics();
-    dwr.logStatistics();
-    log.info("Descriptor source\n" + dso.getStatsString());
-    log.info("Document store\n" + ds.getStatsString());
-
-    log.info("Releasing lock.");
-    if (lf.releaseLock()) {
-      log.info("Released lock");
     } else {
-      log.error("Could not release lock.  The next "
-          + "execution may not start as expected");
+      log.info("Periodic updater started.");
+      final Runnable updater = new Updater();
+      int currentMinute = Calendar.getInstance().get(Calendar.MINUTE);
+      int initialDelay = (75 - currentMinute + currentMinute % 5) % 60;
+
+      /* Run after initialDelay delay and then every hour. */
+      log.info("Periodic updater will start every hour at minute "
+          + ((currentMinute + initialDelay) % 60) + ".");
+      scheduler.scheduleAtFixedRate(updater, initialDelay, 60,
+          TimeUnit.MINUTES);
     }
+  }
+
+  private static class Updater implements Runnable{
+
+    private Logger log = LoggerFactory.getLogger(Main.class);
+
+    public void run() {
+      log.debug("Started update ...");
 
-    log.info("Terminating.");
+      DescriptorSource dso =
+          DescriptorSourceFactory.getDescriptorSource();
+      log.info("Initialized descriptor source");
+      DocumentStore ds = DocumentStoreFactory.getDocumentStore();
+      log.info("Initialized document store");
+      StatusUpdateRunner sur = new StatusUpdateRunner();
+      log.info("Initialized status update runner");
+      DocumentWriterRunner dwr = new DocumentWriterRunner();
+      log.info("Initialized document writer runner");
+
+      log.info("Downloading descriptors.");
+      dso.downloadDescriptors();
+
+      log.info("Reading descriptors.");
+      dso.readDescriptors();
+
+      log.info("Updating internal status files.");
+      sur.updateStatuses();
+
+      log.info("Updating document files.");
+      dwr.writeDocuments();
+
+      log.info("Shutting down.");
+      dso.writeHistoryFiles();
+      log.info("Wrote parse histories");
+      ds.flushDocumentCache();
+      log.info("Flushed document cache");
+
+      log.info("Gathering statistics.");
+      sur.logStatistics();
+      dwr.logStatistics();
+      log.info("Descriptor source\n" + dso.getStatsString());
+      log.info("Document store\n" + ds.getStatsString());
+
+      /* Clean up to prevent out-of-memory exception, and to ensure that
+       * the next execution starts with a fresh descriptor source. */
+      log.info("Cleaning up.");
+      ds.invalidateDocumentCache();
+      DocumentStoreFactory.setDocumentStore(null);
+      DescriptorSourceFactory.setDescriptorSource(null);
+
+      log.info("Done.");
+    }
   }
 }
 

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