@Override
public String touch(Entity entity, String cluster, Boolean skipDryRun) throws FalconException {
EntityID id = new EntityID(entity);
// Ideally state store should have all entities, but, check anyway.
if (STATE_STORE.entityExists(id)) {
Date endTime = EntityUtil.getEndTime(entity, cluster);
if (endTime.before(DateUtil.now())) {
throw new FalconException(
"Entity's end time "
+ SchemaHelper.formatDateUTC(endTime)
+ " is before current time. Entity can't be touch-ed as it has completed.");
}
Collection<InstanceState> instances =
STATE_STORE.getExecutionInstances(entity, cluster, InstanceState.getRunningStates());
// touch should happen irrespective of the state the entity is in.
DAGEngineFactory.getDAGEngine(cluster)
.touch(entity, (skipDryRun == null) ? Boolean.FALSE : skipDryRun);
StringBuilder builder = new StringBuilder();
builder
.append(entity.toShortString())
.append("/Effective Time: ")
.append(getEffectiveTime(entity, cluster, instances));
return builder.toString();
}
throw new FalconException("Could not find entity " + id + " in state store.");
}
// Effective time will be right after the last running instance.
private String getEffectiveTime(
Entity entity, String cluster, Collection<InstanceState> instances) throws FalconException {
if (instances == null || instances.isEmpty()) {
return SchemaHelper.formatDateUTC(DateUtil.now());
} else {
List<InstanceState> instanceList = new ArrayList(instances);
Collections.sort(
instanceList,
new Comparator<InstanceState>() {
@Override
public int compare(InstanceState x, InstanceState y) {
return (x.getInstance().getInstanceSequence() < y.getInstance().getInstanceSequence())
? -1
: (x.getInstance().getInstanceSequence() == y.getInstance().getInstanceSequence()
? 0
: 1);
}
});
// Get the last element as the list is sorted in ascending order
Date lastRunningInstanceTime =
instanceList.get(instanceList.size() - 1).getInstance().getInstanceTime().toDate();
Cluster clusterEntity = ConfigurationStore.get().get(EntityType.CLUSTER, cluster);
// Offset the time by a few seconds, else nextStartTime will be same as the reference time.
Date effectiveTime =
EntityUtil.getNextStartTime(
entity, clusterEntity, DateUtil.offsetTime(lastRunningInstanceTime, 10));
return SchemaHelper.formatDateUTC(effectiveTime);
}
}
@Override
public String update(Entity oldEntity, Entity newEntity, String cluster, Boolean skipDryRun)
throws FalconException {
org.apache.falcon.entity.v0.cluster.Cluster clusterEntity =
ConfigurationStore.get().get(EntityType.CLUSTER, cluster);
boolean entityUpdated =
UpdateHelper.isEntityUpdated(
oldEntity,
newEntity,
cluster,
EntityUtil.getLatestStagingPath(clusterEntity, oldEntity));
StringBuilder result = new StringBuilder();
if (!entityUpdated) {
// Ideally should throw an exception, but, keeping it backward-compatible.
LOG.warn(
"No relevant updates detected in the new entity definition for entity {}!",
newEntity.getName());
return result.toString();
}
Date oldEndTime = EntityUtil.getEndTime(oldEntity, cluster);
Date newEndTime = EntityUtil.getEndTime(newEntity, cluster);
if (newEndTime.before(DateUtil.now()) || newEndTime.before(oldEndTime)) {
throw new FalconException(
"New Entity's end time "
+ SchemaHelper.formatDateUTC(newEndTime)
+ " is before current time or before old end time. Entity can't be updated.");
}
// The steps required are the same as touch.
DAGEngineFactory.getDAGEngine(cluster)
.touch(newEntity, (skipDryRun == null) ? Boolean.FALSE : skipDryRun);
// Additionally, update the executor.
// The update will kick in for new instances created and not for READY/WAITING instances, as
// with Oozie.
Collection<InstanceState> instances = new ArrayList<>();
instances.add(STATE_STORE.getLastExecutionInstance(oldEntity, cluster));
EXECUTION_SERVICE.getEntityExecutor(oldEntity, cluster).update(newEntity);
result
.append(newEntity.toShortString())
.append("/Effective Time: ")
.append(getEffectiveTime(newEntity, cluster, instances));
return result.toString();
}