Examples of org.apache.oodt.cas.workflow.engine.IterativeWorkflowProcessorThread

Package org.apache.oodt.cas.workflow.engine

Examples of org.apache.oodt.cas.workflow.engine.IterativeWorkflowProcessorThread

org.apache.oodt.cas.workflow.engine.IterativeWorkflowProcessorThread
@author mattmann @version $Revision$
An instance of the {@link WorkflowProcessorThread} that processes through aniterative {@link WorkflowInstance}. This class keeps an Iterator that allows it to move from one end of a sequential {@link Workflow} processing pipeline to another. This class should only beused to process science pipeline style {@link Workflow}s, i.e., those which resemble an iterative processing pipelines, with no forks, or concurrent task executions.

     * 
     * @see org.apache.oodt.cas.workflow.engine.WorkflowEngine#resumeWorkflowInstance(java.lang.String)
     */
    public synchronized void resumeWorkflowInstance(String workflowInstId) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            LOG.log(Level.WARNING,
                    "WorkflowEngine: Attempt to resume workflow instance id: "
                            + workflowInstId + ", however, this engine is "
                            + "not tracking its execution");
            return;
        }


        // also check to make sure that the worker is currently paused
        // only can resume WorkflowInstances that are paused, right?
        if (!worker.isPaused()) {
            LOG.log(Level.WARNING,
                    "WorkflowEngine: Attempt to resume a workflow that "
                            + "isn't paused currently: instance id: "
                            + workflowInstId);
            return;
        }


        // okay, all good
        worker.resume();


    }

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                .getTaskId());
        wInst.setSharedContext(metadata);
        wInst.setStatus(CREATED);
        persistWorkflowInstance(wInst);


        IterativeWorkflowProcessorThread worker = new IterativeWorkflowProcessorThread(
                wInst, instRep, this.wmgrUrl);
        worker.setRClient(rClient);
        workerMap.put(wInst.getId(), worker);


        wInst.setStatus(QUEUED);
        persistWorkflowInstance(wInst);

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     *      org.apache.oodt.cas.metadata.Metadata)
     */
    public synchronized boolean updateMetadata(String workflowInstId,
            Metadata met) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            LOG.log(Level.WARNING,
                    "WorkflowEngine: Attempt to update metadata context "
                            + "for workflow instance id: " + workflowInstId
                            + ", however, this engine is "
                            + "not tracking its execution");
            return false;
        }


        worker.getWorkflowInstance().setSharedContext(met);
        try {
            persistWorkflowInstance(worker.getWorkflowInstance());
        } catch (Exception e) {
            LOG.log(Level.WARNING, "Exception persisting workflow instance: ["
                    + worker.getWorkflowInstance().getId() + "]: Message: "
                    + e.getMessage());
            return false;
        }


        return true;

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     * 
     * @see org.apache.oodt.cas.workflow.engine.WorkflowEngine#stopWorkflow(java.lang.String)
     */
    public synchronized void stopWorkflow(String workflowInstId) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            LOG.log(Level.WARNING,
                    "WorkflowEngine: Attempt to stop workflow instance id: "
                            + workflowInstId + ", however, this engine is "
                            + "not tracking its execution");
            return;
        }


        worker.stop();
    }

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     * 
     * @see org.apache.oodt.cas.workflow.engine.WorkflowEngine#getWorkflowInstanceMetadata(java.lang.String)
     */
    public Metadata getWorkflowInstanceMetadata(String workflowInstId) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            // try and get the metadata
            // from the workflow instance repository (as it was persisted)
            try {
                WorkflowInstance inst = instRep
                        .getWorkflowInstanceById(workflowInstId);
                return inst.getSharedContext();
            } catch (InstanceRepositoryException e) {
                LOG.log(Level.FINEST,
                        "WorkflowEngine: Attempt to get metadata "
                                + "for workflow instance id: " + workflowInstId
                                + ", however, this engine is "
                                + "not tracking its execution and the id: ["
                                + workflowInstId + "] "
                                + "was never persisted to "
                                + "the instance repository");
                e.printStackTrace();
                return new Metadata();
            }
        }


        return worker.getWorkflowInstance().getSharedContext();
    }

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    public Vector getWorkflowQueue(){
      return workflowQueue;
    }
    
    public void submitWorkflowInstancetoPool(WorkflowInstance wInst){
      IterativeWorkflowProcessorThread worker = new IterativeWorkflowProcessorThread(
                wInst, instRep, this.wmgrUrl);
        worker.setRClient(rClient);
        workerMap.put(wInst.getId(), worker);


        try {
            pool.execute(worker);
        } catch (InterruptedException e) {

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     * 
     * @see org.apache.oodt.cas.workflow.engine.WorkflowEngine#pauseWorkflowInstance(java.lang.String)
     */
    public synchronized void pauseWorkflowInstance(String workflowInstId) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            LOG
                    .log(
                            Level.WARNING,
                            "WorkflowEngine: Attempt to pause workflow instance id: "
                                    + workflowInstId
                                    + ", however, this engine is not tracking its execution");
            return;
        }


        // otherwise, all good
        worker.pause();


    }

View Full Code Here

     * 
     * @see org.apache.oodt.cas.workflow.engine.WorkflowEngine#resumeWorkflowInstance(java.lang.String)
     */
    public synchronized void resumeWorkflowInstance(String workflowInstId) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            LOG.log(Level.WARNING,
                    "WorkflowEngine: Attempt to resume workflow instance id: "
                            + workflowInstId + ", however, this engine is "
                            + "not tracking its execution");
            return;
        }


        // also check to make sure that the worker is currently paused
        // only can resume WorkflowInstances that are paused, right?
        if (!worker.isPaused()) {
            LOG.log(Level.WARNING,
                    "WorkflowEngine: Attempt to resume a workflow that "
                            + "isn't paused currently: instance id: "
                            + workflowInstId);
            return;
        }


        // okay, all good
        worker.resume();


    }

View Full Code Here

     * 
     * @see org.apache.oodt.cas.workflow.engine.WorkflowEngine#stopWorkflow(java.lang.String)
     */
    public synchronized void stopWorkflow(String workflowInstId) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            LOG.log(Level.WARNING,
                    "WorkflowEngine: Attempt to stop workflow instance id: "
                            + workflowInstId + ", however, this engine is "
                            + "not tracking its execution");
            return;
        }


        worker.stop();
    }

View Full Code Here

     * 
     * @see org.apache.oodt.cas.workflow.engine.WorkflowEngine#pauseWorkflowInstance(java.lang.String)
     */
    public synchronized void pauseWorkflowInstance(String workflowInstId) {
        // okay, try and look up that worker thread in our hash map
        IterativeWorkflowProcessorThread worker = (IterativeWorkflowProcessorThread) workerMap
                .get(workflowInstId);
        if (worker == null) {
            LOG
                    .log(
                            Level.WARNING,
                            "WorkflowEngine: Attempt to pause workflow instance id: "
                                    + workflowInstId
                                    + ", however, this engine is not tracking its execution");
            return;
        }


        // otherwise, all good
        worker.pause();


    }

View Full Code Here

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