Examples of Barrier

com.google.appengine.tools.pipeline.impl.model.Barrier
A {@code Barrier} represents a list of slots that need to be filled beforesomething is allowed to happen.
There are two types of barriers, run barriers and finalize barriers. A run barrier is used to trigger the running of a job. Its list of slots represent arguments to the job. A finalize barrier is used to trigger the finalization of a job. It has only one slot which is used as the output value of the job. The essential properties are:
- type: Either run or finalize
- jobKey: The datastore key of the associated job
- waitingOn: A list of the datastore keys of the slots for which this barrier is waiting
- released: A boolean representing whether or not this barrier is released. Released means that all of the slots are filled and so the action associated with this barrier should be triggered.
@author rudominer@google.com (Mitch Rudominer)
com.opengamma.analytics.financial.model.option.definition.Barrier
com.sun.enterprise.ee.server.group.Barrier
Barrier Interface. A Barrier can be obtained by some part of the system and can be started. The thread might wait at that point of time, until the Barrier is explicitely released. @author Binod.
org.antlr.misc.Barrier
A very simple barrier wait. Once a thread has requested a wait on the barrier with waitForRelease, it cannot fool the barrier into releasing by "hitting" the barrier multiple times-- the thread is blocked on the wait().
org.apache.derbyTesting.functionTests.util.Barrier
In the absence of java.util.concurrent.CyclicBarrier on some of the platforms we test, create our own barrier class. This class allows threads to wait for one another on specific locations, so that they know they're all in the expected state.
org.apache.sling.event.impl.Barrier
Simplified version of the cyclic barrier class for testing.
org.goldenorb.zookeeper.Barrier
The Barrier interface is to be implemented by another class for usage in GoldenOrb, i.e. OrbBarrier.
org.jboss.switchboard.spi.Barrier
org.jgroups.protocols.BARRIER
All messages up the stack have to go through a barrier (read lock, RL). By default, the barrier is open. When a CLOSE_BARRIER event is received, we close the barrier by acquiring a write lock (WL). This succeeds when all previous messages have completed (by releasing their RLs). Thus, when we have acquired the WL, we know that there are no pending messages processed.
When an OPEN_BARRIER event is received, we simply open the barrier again and let all messages pass in the up direction. This is done by releasing the WL. @author Bela Ban
org.rstudio.core.client.Barrier
Use this class to track when multiple independent operations are all completed. Each operation should call acquire() when it begins to get a token, then release() on the token when the operation is complete. When all outstanding tokens are released, then BarrierReleasedEvent is fired. As a safety precaution, all but the first call to release() on a given token is a no-op.

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

      value = v;
    }
  }


  private void doArgumentBuildingTest(Object[] expectedArguments, Object... slotValues) {
    Barrier barrier = Barrier.dummyInstanceForTesting();
    for (Object value : slotValues) {
      if (value instanceof ListMarker) {
        List<?> valueList = ((ListMarker) value).valueList;
        List<Slot> slotList = new ArrayList<>(valueList.size());
        Slot dummyListSlot = createDummySlot();
        dummyListSlot.fill(null);
        for (Object v : valueList) {
          Slot slot = createDummySlot();
          slot.fill(v);
          slotList.add(slot);
        }
        barrier.addListArgumentSlots(dummyListSlot, slotList);
      } else if (value instanceof PhantomMarker) {
        Slot slot = createDummySlot();
        slot.fill(((PhantomMarker) value).value);
        barrier.addPhantomArgumentSlot(slot);
      } else {
        Slot slot = createDummySlot();
        slot.fill(value);
        barrier.addRegularArgumentSlot(slot);
      }


    }
    Object[] arguments = barrier.buildArgumentArray();
    assertEqualArrays(expectedArguments, arguments);
  }

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

      logger.warning("The pipeline has been stopped: " + rootJobRecord);
      throw new AbandonTaskException();
    }


    // TODO(user): b/12301978, check if its a previous run and if so AbandonTaskException
    Barrier runBarrier = jobRecord.getRunBarrierInflated();
    if (null == runBarrier) {
      throw new RuntimeException("Internal logic error: " + jobRecord + " has not been inflated.");
    }
    Barrier finalizeBarrier = jobRecord.getFinalizeBarrierInflated();
    if (null == finalizeBarrier) {
      throw new RuntimeException(
          "Internal logic error: finalize barrier not inflated in " + jobRecord);
    }

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

        return;
      case FINALIZED:
        logger.info("This job has already been run " + jobRecord);
        return;
    }
    Barrier finalizeBarrier = jobRecord.getFinalizeBarrierInflated();
    if (null == finalizeBarrier) {
      throw new RuntimeException("" + jobRecord + " has not been inflated");
    }
    Slot outputSlot = jobRecord.getOutputSlotInflated();
    if (null == outputSlot) {
      throw new RuntimeException("" + jobRecord + " has not been inflated.");
    }


    // release the finalize barrier now so that any concurrent
    // HandleSlotFilled tasks will stop trying
    finalizeBarrier.setReleased();
    UpdateSpec updateSpec = new UpdateSpec(jobRecord.getRootJobKey());
    updateSpec.getOrCreateTransaction("releaseFinalizeBarrier").includeBarrier(finalizeBarrier);
    backEnd.save(updateSpec, jobRecord.getQueueSettings());


    updateSpec = new UpdateSpec(jobRecord.getRootJobKey());
    // Copy the finalize value to the output slot
    List<Object> finalizeArguments = finalizeBarrier.buildArgumentList();
    int numFinalizeArguments = finalizeArguments.size();
    if (1 != numFinalizeArguments) {
      throw new RuntimeException(
          "Internal logic error: numFinalizeArguments=" + numFinalizeArguments);
    }

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

  @Override
  public JobRecord queryJob(final Key jobKey, final JobRecord.InflationType inflationType)
      throws NoSuchObjectException {
    Entity entity = getEntity("queryJob", jobKey);
    JobRecord jobRecord = new JobRecord(entity);
    Barrier runBarrier = null;
    Barrier finalizeBarrier = null;
    Slot outputSlot = null;
    JobInstanceRecord jobInstanceRecord = null;
    ExceptionRecord failureRecord = null;
    switch (inflationType) {
      case FOR_RUN:

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

   * {@code inflate = true} means that {@link Barrier#getWaitingOnInflated()}
   * will not return {@code null}.
   */
  private Barrier queryBarrier(Key barrierKey, boolean inflate) throws NoSuchObjectException {
    Entity entity = getEntity("queryBarrier", barrierKey);
    Barrier barrier = new Barrier(entity);
    if (inflate) {
      Collection<Barrier> barriers = new ArrayList<>(1);
      barriers.add(barrier);
      inflateBarriers(barriers);
    }

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

    Slot slot = new Slot(entity);
    if (inflate) {
      Map<Key, Entity> entities = getEntities("querySlot", slot.getWaitingOnMeKeys());
      Map<Key, Barrier> barriers = new HashMap<>(entities.size());
      for (Map.Entry<Key, Entity> entry : entities.entrySet()) {
        barriers.put(entry.getKey(), new Barrier(entry.getValue()));
      }
      slot.inflate(barriers);
      inflateBarriers(barriers.values());
    }
    return slot;

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

    final Map<Key, Barrier> barriers = new HashMap<>();
    final Map<Key, JobInstanceRecord> jobInstanceRecords = new HashMap<>();
    final Map<Key, ExceptionRecord> failureRecords = new HashMap<>();


    for (Entity entity : queryAll(Barrier.DATA_STORE_KIND, rootJobKey)) {
      barriers.put(entity.getKey(), new Barrier(entity));
    }
    for (Entity entity : queryAll(Slot.DATA_STORE_KIND, rootJobKey)) {
      slots.put(entity.getKey(), new Slot(entity, true));
    }
    for (Entity entity : queryAll(JobRecord.DATA_STORE_KIND, rootJobKey)) {

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

      map.put(JOB_END_TIME, endTime.getTime());
    }
    map.put(JOB_CHILDREN, buildArrayRepresentation(jobRecord.getChildKeys()));
    List<Map<String, Object>> argumentListRepresentation = new LinkedList<>();
    List<String> waitingOnRepresentation = new LinkedList<>();
    Barrier runBarrierInflated = jobRecord.getRunBarrierInflated();
    if (runBarrierInflated != null) {
      populateJobArgumentRepresentation(argumentListRepresentation, waitingOnRepresentation,
          runBarrierInflated.getWaitingOnInflated());
    }
    map.put(JOB_ARGS, argumentListRepresentation);
    map.put(JOB_AFTER_SLOT_KEYS, waitingOnRepresentation);
    Map<String, String> allOutputs = new HashMap<>();
    String outputSlotId = toString(jobRecord.getOutputSlotKey());

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

    if (rootJobRecord.getState() == JobRecord.State.STOPPED) {
      logger.warning("The pipeline has been stopped: " + rootJobRecord);
      throw new AbandonTaskException();
    }
    JobRecord.State jobState = jobRecord.getState();
    Barrier runBarrier = jobRecord.getRunBarrierInflated();
    if (null == runBarrier) {
      throw new RuntimeException("Internal logic error: " + jobRecord
          + " has not been inflated.");
    }
    Barrier finalizeBarrier = jobRecord.getFinalizeBarrierInflated();
    if (null == finalizeBarrier) {
      throw new RuntimeException("Internal logic error: finalize barrier not inflated in "
          + jobRecord);
    }

View Full Code Here

Examples of com.google.appengine.tools.pipeline.impl.model.Barrier

    JobRecord jobRecord = null;


    // Get the JobRecord, its finalize Barrier, all the slots in the
    // finalize Barrier, and the job's output Slot.
    jobRecord = queryJobOrAbandonTask(jobKey, JobRecord.InflationType.FOR_FINALIZE);
    Barrier finalizeBarrier = jobRecord.getFinalizeBarrierInflated();
    if (null == finalizeBarrier) {
      throw new RuntimeException("" + jobRecord + " has not been inflated");
    }
    Slot outputSlot = jobRecord.getOutputSlotInflated();
    if (null == outputSlot) {
      throw new RuntimeException("" + jobRecord + " has not been inflated.");
    }


    // release the finalize barrier now so that any concurrent
    // HandleSlotFilled tasks will stop trying
    finalizeBarrier.setReleased();
    UpdateSpec updateSpec = new UpdateSpec(jobRecord.getRootJobKey());
    updateSpec.getTransaction("releaseFinalizeBarrier").includeBarrier(finalizeBarrier);
    backEnd.save(updateSpec);
    updateSpec = new UpdateSpec(jobRecord.getRootJobKey());


    // Copy the finalize value to the output slot
    List<Object> finalizeArguments = finalizeBarrier.buildArgumentList();
    int numFinalizeArguments = finalizeArguments.size();
    if (1 != numFinalizeArguments) {
      throw new RuntimeException("Internal logic error: numFinalizeArguments="
          + numFinalizeArguments);
    }

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.