public boolean terminateLoopTask(
FlowAction action,
InternalTask initiator,
ChangedTasksInfo changesInfo,
SchedulerStateUpdate frontend) {
// find the target of the loop
InternalTask target = null;
if (action.getTarget().equals(initiator.getName())) {
target = initiator;
} else {
target = internalJob.findTaskUp(action.getTarget(), initiator);
}
boolean replicateForNextLoopIteration =
internalJob.replicateForNextLoopIteration(initiator, target, changesInfo, frontend, action);
if (replicateForNextLoopIteration && action.getCronExpr() != null) {
for (TaskId tid : changesInfo.getNewTasks()) {
InternalTask newTask = internalJob.getIHMTasks().get(tid);
try {
Date startAt = (new Predictor(action.getCronExpr())).nextMatchingDate();
newTask.addGenericInformation(
InternalJob.GENERIC_INFO_START_AT_KEY, ISO8601DateUtil.parse(startAt));
newTask.setScheduledTime(startAt.getTime());
} catch (InvalidPatternException e) {
// this will not happen as the cron expression is
// already being validated in FlowScript class.
LOGGER.debug(e.getMessage());
}
}
}
return replicateForNextLoopIteration;
}
/**
* Instantiate a new JobResult with a jobId and a result
*
* @param id the jobId associated with this result
*/
public JobResultImpl(InternalJob job) {
this.jobInfo = job.getJobInfo();
this.allResults = new HashMap<String, TaskResult>(job.getTasks().size());
this.preciousResults = new HashMap<String, TaskResult>();
for (InternalTask it : job.getIHMTasks().values()) {
this.allResults.put(it.getName(), null);
}
}
void updateMutableAttributes(InternalTask task) {
setTaskName(task.getName());
setStartTime(task.getStartTime());
setFinishedTime(task.getFinishedTime());
setIteration(task.getIterationIndex());
setReplication(task.getReplicationIndex());
setMatchingBlock(task.getMatchingBlock());
setTaskStatus(task.getStatus());
setExecutionDuration(task.getExecutionDuration());
}
/**
* Create an internalTaskFlow job with the given task flow job (user)
*
* @param userJob the user job that will be used to create the internal job.
* @return the created internal job.
* @throws JobCreationException an exception if the factory cannot create the given job.
*/
private static InternalJob createJob(TaskFlowJob userJob) throws JobCreationException {
if (userJob.getTasks().size() == 0) {
logger.info("Job '" + userJob.getName() + "' must contain tasks !");
throw new JobCreationException("This job must contains tasks !");
}
// validate taskflow
List<FlowChecker.Block> blocks = new ArrayList<>();
FlowError err = FlowChecker.validate(userJob, blocks);
if (err != null) {
String e = "";
e += "Invalid taskflow: " + err.getMessage() + "; context: " + err.getTask();
logger.error(e);
throw new JobCreationException(e, err);
}
InternalJob job = new InternalTaskFlowJob();
// keep an initial job content
job.setTaskFlowJob(userJob);
Map<Task, InternalTask> tasksList = new LinkedHashMap<>();
boolean hasPreciousResult = false;
for (Task t : userJob.getTasks()) {
tasksList.put(t, createTask(userJob, t));
if (!hasPreciousResult) {
hasPreciousResult = t.isPreciousResult();
}
}
for (Entry<Task, InternalTask> entry : tasksList.entrySet()) {
if (entry.getKey().getDependencesList() != null) {
for (Task t : entry.getKey().getDependencesList()) {
entry.getValue().addDependence(tasksList.get(t));
}
}
job.addTask(entry.getValue());
}
// tag matching blocks in InternalTasks
for (InternalTask it : tasksList.values()) {
for (FlowChecker.Block block : blocks) {
if (it.getName().equals(block.start.element.getName())) {
it.setMatchingBlock(block.end.element.getName());
}
if (it.getName().equals(block.end.element.getName())) {
it.setMatchingBlock(block.start.element.getName());
}
}
}
// create if/else/join weak dependencies
for (InternalTask it : tasksList.values()) {
// it performs an IF action
if (it.getFlowScript() != null
&& it.getFlowScript().getActionType().equals(FlowActionType.IF.toString())) {
String ifBranch = it.getFlowScript().getActionTarget();
String elseBranch = it.getFlowScript().getActionTargetElse();
String join = it.getFlowScript().getActionContinuation();
List<InternalTask> joinedBranches = new ArrayList<>();
// find the ifBranch task
for (InternalTask it2 : tasksList.values()) {
if (it2.getName().equals(ifBranch)) {
it2.setIfBranch(it);
String match = it2.getMatchingBlock();
// find its matching block task
if (match == null) {
// no match: single task
joinedBranches.add(it2);
} else {
for (InternalTask it3 : tasksList.values()) {
if (it3.getName().equals(match)) {
joinedBranches.add(it3);
break;
}
}
}
break;
}
}
// find the elseBranch task
for (InternalTask it2 : tasksList.values()) {
if (it2.getName().equals(elseBranch)) {
it2.setIfBranch(it);
String match = it2.getMatchingBlock();
// find its matching block task
if (match == null) {
// no match: single task
joinedBranches.add(it2);
} else {
for (InternalTask it3 : tasksList.values()) {
if (it3.getName().equals(match)) {
joinedBranches.add(it3);
break;
}
}
}
break;
}
}
// find the joinBranch task
for (InternalTask it2 : tasksList.values()) {
if (it2.getName().equals(join)) {
it2.setJoinedBranches(joinedBranches);
}
}
}
}
return job;
}