Examples with TemplateInstance com.thinkbiganalytics.nifi.feedmgr.TemplateInstance used on opensource projects

Example 1 with TemplateInstance

use of com.thinkbiganalytics.nifi.feedmgr.TemplateInstance in project kylo by Teradata.

the class CreateFeedBuilder method build.

/**
 * Build the NiFi flow instance
 *
 * @return an object indicating if the feed flow was successfully built or not
 */
public NifiProcessGroup build() throws FeedCreationException {
    try {
        log.info("Creating the feed {}.{} ", category, feedName);
        newProcessGroup = null;
        Stopwatch totalTime = Stopwatch.createStarted();
        Stopwatch eventTime = Stopwatch.createStarted();
        TemplateDTO template = getTemplate();
        if (template != null) {
            log.debug("Time to get Template {}.  ElapsedTime: {} ms", template.getName(), eventTime(eventTime));
            // create the encompassing process group
            eventTime.start();
            ProcessGroupDTO feedProcessGroup = createProcessGroupForFeed();
            log.debug("Time to create process group.  ElapsedTime: {} ms", eventTime(eventTime));
            if (feedProcessGroup != null) {
                String processGroupId = feedProcessGroup.getId();
                // snapshot the existing controller services
                eventTime.start();
                templateCreationHelper.snapshotControllerServiceReferences();
                templateCreationHelper.setOriginalFeedProperties(this.originalFeedProperties);
                log.debug("Time to snapshotControllerServices.  ElapsedTime: {} ms", eventTime(eventTime));
                // create the flow from the template
                eventTime.start();
                TemplateInstance instance = templateCreationHelper.instantiateFlowFromTemplate(processGroupId, templateId);
                FlowSnippetDTO feedInstance = instance.getFlowSnippetDTO();
                feedProcessGroup.setContents(feedInstance);
                log.debug("Time to instantiateFlowFromTemplate.  ElapsedTime: {} ms", eventTime(eventTime));
                eventTime.start();
                String feedCategoryId = feedProcessGroup.getParentGroupId();
                ProcessGroupDTO categoryGroup = this.categoryGroup;
                if (categoryGroup == null) {
                    categoryGroup = this.categoryGroup = restClient.getProcessGroup(feedCategoryId, false, false);
                }
                // update the group with this template?
                updatePortConnectionsForProcessGroup(feedProcessGroup, categoryGroup);
                log.debug("Time to updatePortConnectionsForProcessGroup.  ElapsedTime: {} ms", eventTime(eventTime));
                eventTime.start();
                // mark the new services that were created as a result of creating the new flow from the template
                templateCreationHelper.identifyNewlyCreatedControllerServiceReferences(instance);
                log.debug("Time to identifyNewlyCreatedControllerServiceReferences.  ElapsedTime: {} ms", eventTime(eventTime));
                eventTime.start();
                // match the properties incoming to the defined properties
                updateProcessGroupProperties(processGroupId, feedProcessGroup.getName());
                log.debug("Time to updateProcessGroupProperties.  ElapsedTime: {} ms", eventTime(eventTime));
                eventTime.start();
                // Fetch the Feed Group now that it has the flow in it
                ProcessGroupDTO entity = restClient.getProcessGroup(processGroupId, true, true);
                log.debug("Time to getProcessGroup.  ElapsedTime: {} ms", eventTime(eventTime));
                eventTime.start();
                ProcessorDTO input = fetchInputProcessorForProcessGroup(entity);
                ProcessorDTO cleanupProcessor = NifiProcessUtil.findFirstProcessorsByType(NifiProcessUtil.getInputProcessors(entity), "com.thinkbiganalytics.nifi.v2.metadata.TriggerCleanup");
                List<ProcessorDTO> nonInputProcessors = NifiProcessUtil.getNonInputProcessors(entity);
                log.debug("Time to fetchInputProcessorForProcessGroup.  ElapsedTime: {} ms", eventTime(eventTime));
                eventTime.start();
                List<NifiProperty> updatedControllerServiceProperties = new ArrayList<>();
                // update any references to the controller services and try to assign the value to an enabled service if it is not already
                if (input != null) {
                    updatedControllerServiceProperties.addAll(templateCreationHelper.updateControllerServiceReferences(Lists.newArrayList(input), instance));
                }
                if (cleanupProcessor != null) {
                    updatedControllerServiceProperties.addAll(templateCreationHelper.updateControllerServiceReferences(Collections.singletonList(cleanupProcessor), instance));
                }
                updatedControllerServiceProperties.addAll(templateCreationHelper.updateControllerServiceReferences(nonInputProcessors, instance));
                log.debug("Time to updatedControllerServiceProperties.  ElapsedTime: {} ms", eventTime(eventTime));
                eventTime.start();
                // refetch processors for updated errors
                entity = restClient.getProcessGroup(processGroupId, true, true);
                input = fetchInputProcessorForProcessGroup(entity);
                nonInputProcessors = NifiProcessUtil.getNonInputProcessors(entity);
                RemoteProcessGroupValidator remoteProcessGroupValidator = new RemoteProcessGroupValidator(restClient, templateConnectionUtil, modifiedProperties);
                RemoteProcessGroupValidator.RemoteProcessGroupValidation remoteProcessGroupValidation = remoteProcessGroupValidator.validateAndFixRemoteProcessGroups(entity);
                newProcessGroup = new NifiProcessGroup(entity, input, nonInputProcessors);
                if (!remoteProcessGroupValidation.isValid()) {
                    log.error("Invalid Remote Process Group's were found.");
                    // add the errors
                    remoteProcessGroupValidation.getAllInvalidConnections().stream().forEach(connectionDTO -> {
                        String errorMsg = "Invalid Remote Process Group. Unable set find valid remote input port for " + connectionDTO.getDestination().getName() + ". Please ensure you have a remote input port matching this name";
                        newProcessGroup.addError(processGroupId, connectionDTO.getId(), NifiError.SEVERITY.FATAL, errorMsg, "Remote Process Group");
                        newProcessGroup.setSuccess(false);
                    });
                }
                log.debug("Time to re-fetchInputProcessorForProcessGroup.  ElapsedTime: {} ms", eventTime(eventTime));
                // Validate and if invalid Delete the process group
                if (newProcessGroup.hasFatalErrors()) {
                    eventTime.start();
                    removeProcessGroup(entity);
                    // cleanupControllerServices();
                    newProcessGroup.setSuccess(false);
                    log.debug("Time to removeProcessGroup. Errors found.  ElapsedTime: {} ms", eventTime(eventTime));
                } else {
                    eventTime.start();
                    // update the input schedule
                    updateFeedSchedule(newProcessGroup, input);
                    log.debug("Time to update feed schedule.  ElapsedTime: {} ms", eventTime(eventTime));
                    eventTime.start();
                    // just need to update for this processgroup
                    Collection<ProcessorDTO> processors = NifiProcessUtil.getProcessors(entity);
                    Collection<ConnectionDTO> connections = NifiConnectionUtil.getAllConnections(entity);
                    nifiFlowCache.updateFlowForFeed(feedMetadata, entity.getId(), processors, connections);
                    log.debug("Time to build flow graph with {} processors and {} connections.  ElapsedTime: {} ms", processors.size(), connections.size(), eventTime(eventTime));
                    /*

                        //Cache the processorIds to the respective flowIds for availability in the ProvenanceReportingTask
                        NifiVisitableProcessGroup group = nifiFlowCache.getFlowOrder(newProcessGroup.getProcessGroupEntity(), true);
                       log.debug("Time to get the flow order.  ElapsedTime: {} ms", eventTime(eventTime));

                        eventTime.start();
                        NifiFlowProcessGroup
                            flow =
                            new NifiFlowBuilder().build(
                                group);
                       log.debug("Time to build flow graph with {} processors.  ElapsedTime: {} ms", flow.getProcessorMap().size(), eventTime(eventTime));

                        eventTime.start();
                        nifiFlowCache.updateFlow(feedMetadata, flow);
                       log.debug("Time to update NiFiFlowCache with {} processors.  ElapsedTime: {} ms", flow.getProcessorMap().size(), eventTime(eventTime));
                        */
                    eventTime.start();
                    // disable all inputs
                    restClient.disableInputProcessors(newProcessGroup.getProcessGroupEntity().getId());
                    log.debug("Time to disableInputProcessors.  ElapsedTime: {} ms", eventTime(eventTime));
                    eventTime.start();
                    // mark everything else as running
                    templateCreationHelper.markProcessorsAsRunning(newProcessGroup);
                    log.debug("Time to markNonInputsAsRunning.  ElapsedTime: {} ms", eventTime(eventTime));
                    // if desired start the input processor
                    if (input != null) {
                        eventTime.start();
                        if (enabled) {
                            markInputAsRunning(newProcessGroup, input);
                            // /make the input/output ports in the category group as running
                            if (hasConnectionPorts()) {
                                templateCreationHelper.markConnectionPortsAsRunning(entity);
                            }
                        } else {
                            // /make the input/output ports in the category group as running
                            if (hasConnectionPorts()) {
                                templateCreationHelper.markConnectionPortsAsRunning(entity);
                            }
                            markInputAsStopped(newProcessGroup, input);
                        }
                        log.debug("Time to mark input as {}.  ElapsedTime: {} ms", (enabled ? "Running" : "Stopped"), eventTime(eventTime));
                    }
                    if (newProcessGroup.hasFatalErrors()) {
                        eventTime.start();
                        rollback();
                        newProcessGroup.setRolledBack(true);
                        // cleanupControllerServices();
                        newProcessGroup.setSuccess(false);
                        log.debug("Time to rollback on Fatal Errors.  ElapsedTime: {} ms", eventTime(eventTime));
                    }
                    List<NifiError> templateCreationErrors = templateCreationHelper.getErrors();
                    if (templateCreationErrors != null) {
                        errors.addAll(templateCreationErrors);
                    }
                    // add any global errors to the object
                    if (errors != null && !errors.isEmpty()) {
                        for (NifiError error : errors) {
                            newProcessGroup.addError(error);
                            if (error.isFatal()) {
                                newProcessGroup.setSuccess(false);
                                if (!newProcessGroup.isRolledBack()) {
                                    rollback();
                                    newProcessGroup.setRolledBack(true);
                                }
                            }
                        }
                    }
                }
                eventTime.start();
                templateCreationHelper.cleanupControllerServices();
                // fix the feed metadata controller service references
                updateFeedMetadataControllerServiceReferences(updatedControllerServiceProperties);
                log.debug("Time cleanup controller services.  ElapsedTime: {} ms", eventTime(eventTime));
                // align items
                if (this.autoAlign) {
                    eventTime.start();
                    log.info("Aligning Feed flows in NiFi ");
                    AlignProcessGroupComponents alignProcessGroupComponents = new AlignProcessGroupComponents(restClient.getNiFiRestClient(), entity.getParentGroupId());
                    alignProcessGroupComponents.autoLayout();
                    // fetch the parent to get that id to align
                    if (newCategory) {
                        log.info("This is the first feed created in the category {}.  Aligning the categories. ", feedMetadata.getCategory().getSystemName());
                        new AlignProcessGroupComponents(restClient.getNiFiRestClient(), this.categoryGroup.getParentGroupId()).autoLayout();
                    }
                    log.info("Time align feed process groups.  ElapsedTime: {} ms", eventTime(eventTime));
                } else {
                    log.info("Skipping auto alignment in NiFi. You can always manually align this category and all of its feeds by using the rest api: /v1/feedmgr/nifi/auto-align/{}", entity.getParentGroupId());
                    if (newCategory) {
                        log.info("To re align the categories: /v1/feedmgr/nifi/auto-align/{}", this.categoryGroup.getParentGroupId());
                    }
                }
            }
        } else {
            log.error("Unable to create/save the feed {}.  Unable to find a template for id {}", feedName, templateId);
            throw new FeedCreationException("Unable to create the feed [" + feedName + "]. Unable to find a template with id " + templateId);
        }
        log.info("Time save Feed flow in NiFi.  ElapsedTime: {} ms", eventTime(totalTime));
        return newProcessGroup;
    } catch (NifiClientRuntimeException e) {
        throw new FeedCreationException("Unable to create the feed [" + feedName + "]. " + e.getMessage(), e);
    }
}