コード例 #1
0
 private void assertEnvIsLocked() {
   if (!closed.get() && locks != null) {
     for (Lock lock : locks) {
       try {
         lock.ensureValid();
       } catch (IOException e) {
         logger.warn("lock assertion failed", e);
         throw new IllegalStateException("environment is not locked", e);
       }
     }
   }
 }
コード例 #2
0
 private boolean assertEnvIsLocked() {
   if (!closed.get() && locks != null) {
     for (Lock lock : locks) {
       try {
         assert lock.isLocked() : "Lock: " + lock + "is not locked";
       } catch (IOException e) {
         logger.warn("lock assertion failed", e);
         return false;
       }
     }
   }
   return true;
 }
コード例 #3
0
 @Override
 public void close() {
   if (closed.compareAndSet(false, true) && locks != null) {
     for (Lock lock : locks) {
       try {
         logger.trace("releasing lock [{}]", lock);
         lock.close();
       } catch (IOException e) {
         logger.trace("failed to release lock [{}]", e, lock);
       }
     }
   }
 }
コード例 #4
0
 private boolean assertEnvIsLocked() {
   if (!closed.get() && locks != null) {
     for (Lock lock : locks) {
       try {
         lock.ensureValid();
       } catch (IOException e) {
         logger.warn("lock assertion failed", e);
         return false;
       }
     }
   }
   return true;
 }
コード例 #5
0
 @Override
 public void close() {
   if (closed.compareAndSet(false, true) && locks != null) {
     for (Lock lock : locks) {
       try {
         logger.trace("releasing lock [{}]", lock);
         lock.close();
       } catch (IOException e) {
         logger.trace(
             (Supplier<?>) () -> new ParameterizedMessage("failed to release lock [{}]", lock), e);
       }
     }
   }
 }
コード例 #6
0
ファイル: GeoOnlyIndexer.java プロジェクト: romangarcia/bobo
  public GeoOnlyIndexer(GeoSearchConfig config, Directory directory, String indexName)
      throws IOException {
    this.config = config;
    this.directory = directory;
    this.indexName = indexName;

    lock = directory.makeLock(indexName);
    if (!lock.obtain()) {
      throw new LockObtainFailedException("Index locked for write: " + indexName);
    }
  }
コード例 #7
0
  /**
   * Tries to acquire the WriteLock on this directory. this method is only valid if this IndexReader
   * is directory owner.
   *
   * @throws StaleReaderException if the index has changed since this reader was opened
   * @throws CorruptIndexException if the index is corrupt
   * @throws org.apache.lucene.store.LockObtainFailedException if another writer has this index open
   *     (<code>write.lock</code> could not be obtained)
   * @throws IOException if there is a low-level IO error
   */
  @Override
  protected void acquireWriteLock()
      throws StaleReaderException, CorruptIndexException, LockObtainFailedException, IOException {

    if (readOnly) {
      // NOTE: we should not reach this code w/ the core
      // IndexReader classes; however, an external subclass
      // of IndexReader could reach this.
      ReadOnlySegmentReader.noWrite();
    }

    if (segmentInfos != null) {
      ensureOpen();
      if (stale)
        throw new StaleReaderException(
            "IndexReader out of date and no longer valid for delete, undelete, or setNorm operations");

      if (writeLock == null) {
        Lock writeLock = directory.makeLock(IndexWriter.WRITE_LOCK_NAME);
        if (!writeLock.obtain(IndexWriterConfig.WRITE_LOCK_TIMEOUT)) // obtain write lock
        throw new LockObtainFailedException("Index locked for write: " + writeLock);
        this.writeLock = writeLock;

        // we have to check whether index has changed since this reader was opened.
        // if so, this reader is no longer valid for
        // deletion
        if (SegmentInfos.readCurrentVersion(directory) > maxIndexVersion) {
          stale = true;
          this.writeLock.release();
          this.writeLock = null;
          throw new StaleReaderException(
              "IndexReader out of date and no longer valid for delete, undelete, or setNorm operations");
        }
      }
    }
  }
コード例 #8
0
  @Test
  public void testSimpleLocking() throws Exception {
    ByteBufferCache cache = new ByteBufferCache(40, 80, true);
    ByteBufferDirectory dir = new ByteBufferDirectory(cache);

    Lock lock = dir.makeLock("testlock");

    assertThat(lock.isLocked(), equalTo(false));
    assertThat(lock.obtain(200), equalTo(true));
    assertThat(lock.isLocked(), equalTo(true));
    try {
      assertThat(lock.obtain(200), equalTo(false));
      assertThat("lock should be thrown", false, equalTo(true));
    } catch (LockObtainFailedException e) {
      // all is well
    }
    lock.release();
    assertThat(lock.isLocked(), equalTo(false));
    dir.close();
    cache.close();
  }
コード例 #9
0
  /**
   * Commit changes resulting from delete, undeleteAll, or setNorm operations
   *
   * <p>If an exception is hit, then either no changes or all changes will have been committed to
   * the index (transactional semantics).
   *
   * @throws IOException if there is a low-level IO error
   */
  @Override
  protected void doCommit(Map<String, String> commitUserData) throws IOException {
    if (hasChanges) {
      segmentInfos.setUserData(commitUserData);
      // Default deleter (for backwards compatibility) is
      // KeepOnlyLastCommitDeleter:
      IndexFileDeleter deleter =
          new IndexFileDeleter(
              directory,
              deletionPolicy == null ? new KeepOnlyLastCommitDeletionPolicy() : deletionPolicy,
              segmentInfos,
              null,
              null);
      segmentInfos.updateGeneration(deleter.getLastSegmentInfos());
      segmentInfos.changed();

      // Checkpoint the state we are about to change, in
      // case we have to roll back:
      startCommit();

      final List<SegmentInfo> rollbackSegments = segmentInfos.createBackupSegmentInfos(false);

      boolean success = false;
      try {
        for (int i = 0; i < subReaders.length; i++) subReaders[i].commit();

        // Remove segments that contain only 100% deleted
        // docs:
        segmentInfos.pruneDeletedSegments();

        // Sync all files we just wrote
        directory.sync(segmentInfos.files(directory, false));
        segmentInfos.commit(directory);
        success = true;
      } finally {

        if (!success) {

          // Rollback changes that were made to
          // SegmentInfos but failed to get [fully]
          // committed.  This way this reader instance
          // remains consistent (matched to what's
          // actually in the index):
          rollbackCommit();

          // Recompute deletable files & remove them (so
          // partially written .del files, etc, are
          // removed):
          deleter.refresh();

          // Restore all SegmentInfos (in case we pruned some)
          segmentInfos.rollbackSegmentInfos(rollbackSegments);
        }
      }

      // Have the deleter remove any now unreferenced
      // files due to this commit:
      deleter.checkpoint(segmentInfos, true);
      deleter.close();

      maxIndexVersion = segmentInfos.getVersion();

      if (writeLock != null) {
        writeLock.release(); // release write lock
        writeLock = null;
      }
    }
    hasChanges = false;
  }
コード例 #10
0
ファイル: GeoOnlyIndexer.java プロジェクト: romangarcia/bobo
 /**
  * Closes this geoIndexer and releases any locks held
  *
  * @throws IOException
  */
 public void close() throws IOException {
   lock.release();
 }