Examples with FlowController org.apache.nifi.controller.FlowController used on opensource projects

Example 16 with FlowController

use of org.apache.nifi.controller.FlowController in project nifi-minifi by apache.

the class MiNiFiServer method start.

public void start() {
    try {
        logger.info("Loading Flow...");
        FlowFileEventRepository flowFileEventRepository = new RingBufferEventRepository(5);
        AuditService auditService = new StandardAuditService();
        Authorizer authorizer = new Authorizer() {

            @Override
            public AuthorizationResult authorize(AuthorizationRequest request) throws AuthorizationAccessException {
                return AuthorizationResult.approved();
            }

            @Override
            public void initialize(AuthorizerInitializationContext initializationContext) throws AuthorizerCreationException {
            // do nothing
            }

            @Override
            public void onConfigured(AuthorizerConfigurationContext configurationContext) throws AuthorizerCreationException {
            // do nothing
            }

            @Override
            public void preDestruction() throws AuthorizerDestructionException {
            // do nothing
            }
        };
        final String sensitivePropAlgorithmVal = props.getProperty(StringEncryptor.NF_SENSITIVE_PROPS_ALGORITHM);
        final String sensitivePropProviderVal = props.getProperty(StringEncryptor.NF_SENSITIVE_PROPS_PROVIDER);
        final String sensitivePropValueNifiPropVar = props.getProperty(StringEncryptor.NF_SENSITIVE_PROPS_KEY, DEFAULT_SENSITIVE_PROPS_KEY);
        StringEncryptor encryptor = StringEncryptor.createEncryptor(sensitivePropAlgorithmVal, sensitivePropProviderVal, sensitivePropValueNifiPropVar);
        VariableRegistry variableRegistry = new FileBasedVariableRegistry(props.getVariableRegistryPropertiesPaths());
        BulletinRepository bulletinRepository = new VolatileBulletinRepository();
        FlowController flowController = FlowController.createStandaloneInstance(flowFileEventRepository, props, authorizer, auditService, encryptor, bulletinRepository, variableRegistry, new StandardFlowRegistryClient());
        flowService = StandardFlowService.createStandaloneInstance(flowController, props, encryptor, // revision manager
        null, authorizer);
        // start and load the flow
        flowService.start();
        flowService.load(null);
        flowController.onFlowInitialized(true);
        flowController.getGroup(flowController.getRootGroupId()).startProcessing();
        this.flowController = flowController;
        logger.info("Flow loaded successfully.");
    } catch (Exception e) {
        // ensure the flow service is terminated
        if (flowService != null && flowService.isRunning()) {
            flowService.stop(false);
        }
        startUpFailure(new Exception("Unable to load flow due to: " + e, e));
    }
}