Examples with Page org.activiti.engine.impl.Page used on opensource projects

Example 1 with Page

use of org.activiti.engine.impl.Page in project Activiti by Activiti.

the class SimulationAcquireJobsRunnable method run.

public synchronized void run() {
    //		    if (log.isLoggable(Level.INFO)) {
    //		      log.info(jobExecutor.getName() + " starting to acquire jobs");
    //		    }
    final CommandExecutor commandExecutor = jobExecutor.getCommandExecutor();
    // while is not needed - repetition is done by event scheduling 
    //		    while (!isInterrupted) {
    isWaiting.set(false);
    int maxJobsPerAcquisition = jobExecutor.getMaxJobsPerAcquisition();
    try {
        AcquiredJobs acquiredJobs = commandExecutor.execute(jobExecutor.getAcquireJobsCmd());
        for (List<String> jobIds : acquiredJobs.getJobIdBatches()) {
            jobExecutor.executeJobs(jobIds);
        }
        // if all jobs were executed
        millisToWait = jobExecutor.getWaitTimeInMillis();
        int jobsAcquired = acquiredJobs.getJobIdBatches().size();
        if (jobsAcquired < maxJobsPerAcquisition) {
            isJobAdded = false;
            // check if the next timer should fire before the normal sleep time is over
            Date duedate = new Date(SimulationRunContext.getClock().getCurrentTime().getTime() + millisToWait);
            List<TimerEntity> nextTimers = commandExecutor.execute(new GetUnlockedTimersByDuedateCmd(duedate, new Page(0, 1)));
            if (!nextTimers.isEmpty()) {
                long millisTillNextTimer = nextTimers.get(0).getDuedate().getTime() - SimulationRunContext.getClock().getCurrentTime().getTime();
                if (millisTillNextTimer < millisToWait && millisTillNextTimer != 0) {
                    millisToWait = millisTillNextTimer;
                }
            }
        } else {
            millisToWait = 0;
        }
    } catch (ActivitiOptimisticLockingException optimisticLockingException) {
        // See https://activiti.atlassian.net/browse/ACT-1390
        log.trace("Optimistic locking exception during job acquisition. If you have multiple job executors running against the same database, " + "this exception means that this thread tried to acquire a job, which already was acquired by another job executor acquisition thread." + "This is expected behavior in a clustered environment. " + "You can ignore this message if you indeed have multiple job executor acquisition threads running against the same database. " + "Exception message: " + optimisticLockingException.getMessage());
    } catch (Exception e) {
        log.error("exception during job acquisition: " + e.getMessage(), e);
        millisToWait = jobExecutor.getWaitTimeInMillis();
    }
    if ((millisToWait > 0) && (!isJobAdded)) {
        try {
            log.trace("job acquisition thread sleeping for " + millisToWait + " millis");
            synchronized (MONITOR) {
                if (!isInterrupted) {
                    isWaiting.set(true);
                    SimulationEvent event = new SimulationEvent.Builder(SimulationEvent.TYPE_ACQUIRE_JOB_NOTIFICATION_EVENT).simulationTime(SimulationRunContext.getClock().getCurrentTime().getTime() + millisToWait).property(this).build();
                    SimulationRunContext.getEventCalendar().addEvent(event);
                // do not need to wait. - event scheduling is enough
                //MONITOR.wait(millisToWait);
                }
            }
            log.trace("job acquisition thread woke up");
        } finally {
        //		          isWaiting.set(false);
        }
    } else {
        // schedule run now
        SimulationEvent event = new SimulationEvent.Builder(SimulationEvent.TYPE_ACQUIRE_JOB_NOTIFICATION_EVENT).simulationTime(SimulationRunContext.getClock().getCurrentTime().getTime()).property(this).build();
        SimulationRunContext.getEventCalendar().addEvent(event);
    }
//		    }
//		    if (log.isLoggable(Level.INFO)) {
//		      log.info(jobExecutor.getName() + " stopped job acquisition");
//		    }
}

Example 2 with Page

use of org.activiti.engine.impl.Page in project Activiti by Activiti.

the class AcquireAsyncJobsDueCmd method execute.

public AcquiredJobEntities execute(CommandContext commandContext) {
    AcquiredJobEntities acquiredJobs = new AcquiredJobEntities();
    List<JobEntity> jobs = commandContext.getJobEntityManager().findAsyncJobsDueToExecute(new Page(0, asyncExecutor.getMaxAsyncJobsDuePerAcquisition()));
    for (JobEntity job : jobs) {
        lockJob(commandContext, job, asyncExecutor.getAsyncJobLockTimeInMillis());
        acquiredJobs.addJob(job);
    }
    return acquiredJobs;
}

Example 3 with Page

use of org.activiti.engine.impl.Page in project Activiti by Activiti.

the class AcquireJobsCmd method execute.

public AcquiredJobs execute(CommandContext commandContext) {
    String lockOwner = jobExecutor.getLockOwner();
    int lockTimeInMillis = jobExecutor.getLockTimeInMillis();
    int maxNonExclusiveJobsPerAcquisition = jobExecutor.getMaxJobsPerAcquisition();
    AcquiredJobs acquiredJobs = new AcquiredJobs();
    List<JobEntity> jobs = commandContext.getJobEntityManager().findNextJobsToExecute(new Page(0, maxNonExclusiveJobsPerAcquisition));
    for (JobEntity job : jobs) {
        List<String> jobIds = new ArrayList<String>();
        if (job != null && !acquiredJobs.contains(job.getId())) {
            if (job instanceof MessageEntity && job.isExclusive() && job.getProcessInstanceId() != null) {
                // wait to get exclusive jobs within 100ms
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                }
                // acquire all exclusive jobs in the same process instance
                // (includes the current job)
                List<JobEntity> exclusiveJobs = commandContext.getJobEntityManager().findExclusiveJobsToExecute(job.getProcessInstanceId());
                for (JobEntity exclusiveJob : exclusiveJobs) {
                    if (exclusiveJob != null) {
                        lockJob(commandContext, exclusiveJob, lockOwner, lockTimeInMillis);
                        jobIds.add(exclusiveJob.getId());
                    }
                }
            } else {
                lockJob(commandContext, job, lockOwner, lockTimeInMillis);
                jobIds.add(job.getId());
            }
        }
        acquiredJobs.addJobIdBatch(jobIds);
    }
    return acquiredJobs;
}

Example 4 with Page

use of org.activiti.engine.impl.Page in project Activiti by Activiti.

the class AcquireTimerJobsCmd method execute.

public AcquiredJobEntities execute(CommandContext commandContext) {
    AcquiredJobEntities acquiredJobs = new AcquiredJobEntities();
    List<JobEntity> jobs = commandContext.getJobEntityManager().findNextTimerJobsToExecute(new Page(0, maxJobsPerAcquisition));
    for (JobEntity job : jobs) {
        if (job != null && !acquiredJobs.contains(job.getId())) {
            lockJob(commandContext, job, lockOwner, lockTimeInMillis);
            acquiredJobs.addJob(job);
        }
    }
    return acquiredJobs;
}

Example 5 with Page

use of org.activiti.engine.impl.Page in project Activiti by Activiti.

the class DeploymentEntityManager method findNewLatestProcessDefinitionAfterRemovalOf.

protected ProcessDefinition findNewLatestProcessDefinitionAfterRemovalOf(ProcessDefinition processDefinitionToBeRemoved) {
    // The latest process definition is not necessarily the one with 'version -1' (some versions could have been deleted)
    // Hence, the following logic
    ProcessDefinitionQueryImpl query = new ProcessDefinitionQueryImpl();
    query.processDefinitionKey(processDefinitionToBeRemoved.getKey());
    if (processDefinitionToBeRemoved.getTenantId() != null && !ProcessEngineConfiguration.NO_TENANT_ID.equals(processDefinitionToBeRemoved.getTenantId())) {
        query.processDefinitionTenantId(processDefinitionToBeRemoved.getTenantId());
    } else {
        query.processDefinitionWithoutTenantId();
    }
    query.processDefinitionVersionLowerThan(processDefinitionToBeRemoved.getVersion());
    query.orderByProcessDefinitionVersion().desc();
    List<ProcessDefinition> processDefinitions = getProcessDefinitionManager().findProcessDefinitionsByQueryCriteria(query, new Page(0, 1));
    if (processDefinitions != null && processDefinitions.size() > 0) {
        return processDefinitions.get(0);
    }
    return null;
}