Examples with Consumer java.util.function.Consumer used on opensource projects

Example 51 with Consumer

use of java.util.function.Consumer in project nifi by apache.

the class ProcessGroupResource method instantiateTemplate.

/**
 * Instantiates the specified template within this ProcessGroup. The template instance that is instantiated cannot be referenced at a later time, therefore there is no
 * corresponding URI. Instead the request URI is returned.
 * <p>
 * Alternatively, we could have performed a PUT request. However, PUT requests are supposed to be idempotent and this endpoint is certainly not.
 *
 * @param httpServletRequest               request
 * @param groupId                          The group id
 * @param requestInstantiateTemplateRequestEntity The instantiate template request
 * @return A flowEntity.
 */
@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@Path("{id}/template-instance")
@ApiOperation(value = "Instantiates a template", response = FlowEntity.class, authorizations = { @Authorization(value = "Write - /process-groups/{uuid}"), @Authorization(value = "Read - /templates/{uuid}"), @Authorization(value = "Write - if the template contains any restricted components - /restricted-components") })
@ApiResponses(value = { @ApiResponse(code = 400, message = "NiFi was unable to complete the request because it was invalid. The request should not be retried without modification."), @ApiResponse(code = 401, message = "Client could not be authenticated."), @ApiResponse(code = 403, message = "Client is not authorized to make this request."), @ApiResponse(code = 404, message = "The specified resource could not be found."), @ApiResponse(code = 409, message = "The request was valid but NiFi was not in the appropriate state to process it. Retrying the same request later may be successful.") })
public Response instantiateTemplate(@Context HttpServletRequest httpServletRequest, @ApiParam(value = "The process group id.", required = true) @PathParam("id") String groupId, @ApiParam(value = "The instantiate template request.", required = true) InstantiateTemplateRequestEntity requestInstantiateTemplateRequestEntity) {
    // ensure the position has been specified
    if (requestInstantiateTemplateRequestEntity == null || requestInstantiateTemplateRequestEntity.getOriginX() == null || requestInstantiateTemplateRequestEntity.getOriginY() == null) {
        throw new IllegalArgumentException("The origin position (x, y) must be specified.");
    }
    // ensure the template id was provided
    if (requestInstantiateTemplateRequestEntity.getTemplateId() == null) {
        throw new IllegalArgumentException("The template id must be specified.");
    }
    // ensure the template encoding version is valid
    if (requestInstantiateTemplateRequestEntity.getEncodingVersion() != null) {
        try {
            FlowEncodingVersion.parse(requestInstantiateTemplateRequestEntity.getEncodingVersion());
        } catch (final IllegalArgumentException e) {
            throw new IllegalArgumentException("The template encoding version is not valid. The expected format is <number>.<number>");
        }
    }
    // populate the encoding version if necessary
    if (requestInstantiateTemplateRequestEntity.getEncodingVersion() == null) {
        // if the encoding version is not specified, use the latest encoding version as these options were
        // not available pre 1.x, will be overridden if populating from the underlying template below
        requestInstantiateTemplateRequestEntity.setEncodingVersion(TemplateDTO.MAX_ENCODING_VERSION);
    }
    // populate the component bundles if necessary
    if (requestInstantiateTemplateRequestEntity.getSnippet() == null) {
        // get the desired template in order to determine the supported bundles
        final TemplateDTO requestedTemplate = serviceFacade.exportTemplate(requestInstantiateTemplateRequestEntity.getTemplateId());
        final FlowSnippetDTO requestTemplateContents = requestedTemplate.getSnippet();
        // determine the compatible bundles to use for each component in this template, this ensures the nodes in the cluster
        // instantiate the components from the same bundles
        discoverCompatibleBundles(requestTemplateContents);
        // update the requested template as necessary - use the encoding version from the underlying template
        requestInstantiateTemplateRequestEntity.setEncodingVersion(requestedTemplate.getEncodingVersion());
        requestInstantiateTemplateRequestEntity.setSnippet(requestTemplateContents);
    }
    if (isReplicateRequest()) {
        return replicate(HttpMethod.POST, requestInstantiateTemplateRequestEntity);
    }
    return withWriteLock(serviceFacade, requestInstantiateTemplateRequestEntity, lookup -> {
        final NiFiUser user = NiFiUserUtils.getNiFiUser();
        // ensure write on the group
        final Authorizable processGroup = lookup.getProcessGroup(groupId).getAuthorizable();
        processGroup.authorize(authorizer, RequestAction.WRITE, user);
        final Authorizable template = lookup.getTemplate(requestInstantiateTemplateRequestEntity.getTemplateId());
        template.authorize(authorizer, RequestAction.READ, user);
        // ensure read on the template
        final TemplateContentsAuthorizable templateContents = lookup.getTemplateContents(requestInstantiateTemplateRequestEntity.getSnippet());
        final Consumer<ComponentAuthorizable> authorizeRestricted = authorizable -> {
            if (authorizable.isRestricted()) {
                authorizeRestrictions(authorizer, authorizable);
            }
        };
        // ensure restricted access if necessary
        templateContents.getEncapsulatedProcessors().forEach(authorizeRestricted);
        templateContents.getEncapsulatedControllerServices().forEach(authorizeRestricted);
    }, () -> serviceFacade.verifyComponentTypes(requestInstantiateTemplateRequestEntity.getSnippet()), instantiateTemplateRequestEntity -> {
        // create the template and generate the json
        final FlowEntity entity = serviceFacade.createTemplateInstance(groupId, instantiateTemplateRequestEntity.getOriginX(), instantiateTemplateRequestEntity.getOriginY(), instantiateTemplateRequestEntity.getEncodingVersion(), instantiateTemplateRequestEntity.getSnippet(), getIdGenerationSeed().orElse(null));
        final FlowDTO flowSnippet = entity.getFlow();
        // prune response as necessary
        for (ProcessGroupEntity childGroupEntity : flowSnippet.getProcessGroups()) {
            childGroupEntity.getComponent().setContents(null);
        }
        // create the response entity
        populateRemainingSnippetContent(flowSnippet);
        // generate the response
        return generateCreatedResponse(getAbsolutePath(), entity).build();
    });
}

Example 52 with Consumer

use of java.util.function.Consumer in project nifi by apache.

the class ControllerFacade method getResources.

public List<Resource> getResources() {
    final List<Resource> resources = new ArrayList<>();
    resources.add(ResourceFactory.getFlowResource());
    resources.add(ResourceFactory.getSystemResource());
    resources.add(ResourceFactory.getControllerResource());
    resources.add(ResourceFactory.getCountersResource());
    resources.add(ResourceFactory.getProvenanceResource());
    resources.add(ResourceFactory.getPoliciesResource());
    resources.add(ResourceFactory.getTenantResource());
    resources.add(ResourceFactory.getProxyResource());
    resources.add(ResourceFactory.getResourceResource());
    resources.add(ResourceFactory.getSiteToSiteResource());
    // restricted components
    resources.add(ResourceFactory.getRestrictedComponentsResource());
    Arrays.stream(RequiredPermission.values()).forEach(requiredPermission -> resources.add(ResourceFactory.getRestrictedComponentsResource(requiredPermission)));
    final ProcessGroup root = flowController.getGroup(flowController.getRootGroupId());
    // include the root group
    final Resource rootResource = root.getResource();
    resources.add(rootResource);
    resources.add(ResourceFactory.getDataResource(rootResource));
    resources.add(ResourceFactory.getPolicyResource(rootResource));
    // add each processor
    for (final ProcessorNode processor : root.findAllProcessors()) {
        final Resource processorResource = processor.getResource();
        resources.add(processorResource);
        resources.add(ResourceFactory.getDataResource(processorResource));
        resources.add(ResourceFactory.getPolicyResource(processorResource));
    }
    // add each label
    for (final Label label : root.findAllLabels()) {
        final Resource labelResource = label.getResource();
        resources.add(labelResource);
        resources.add(ResourceFactory.getPolicyResource(labelResource));
    }
    // add each process group
    for (final ProcessGroup processGroup : root.findAllProcessGroups()) {
        final Resource processGroupResource = processGroup.getResource();
        resources.add(processGroupResource);
        resources.add(ResourceFactory.getDataResource(processGroupResource));
        resources.add(ResourceFactory.getPolicyResource(processGroupResource));
    }
    // add each remote process group
    for (final RemoteProcessGroup remoteProcessGroup : root.findAllRemoteProcessGroups()) {
        final Resource remoteProcessGroupResource = remoteProcessGroup.getResource();
        resources.add(remoteProcessGroupResource);
        resources.add(ResourceFactory.getDataResource(remoteProcessGroupResource));
        resources.add(ResourceFactory.getPolicyResource(remoteProcessGroupResource));
    }
    // add each input port
    for (final Port inputPort : root.findAllInputPorts()) {
        final Resource inputPortResource = inputPort.getResource();
        resources.add(inputPortResource);
        resources.add(ResourceFactory.getDataResource(inputPortResource));
        resources.add(ResourceFactory.getPolicyResource(inputPortResource));
        if (inputPort instanceof RootGroupPort) {
            resources.add(ResourceFactory.getDataTransferResource(inputPortResource));
        }
    }
    // add each output port
    for (final Port outputPort : root.findAllOutputPorts()) {
        final Resource outputPortResource = outputPort.getResource();
        resources.add(outputPortResource);
        resources.add(ResourceFactory.getDataResource(outputPortResource));
        resources.add(ResourceFactory.getPolicyResource(outputPortResource));
        if (outputPort instanceof RootGroupPort) {
            resources.add(ResourceFactory.getDataTransferResource(outputPortResource));
        }
    }
    // add each controller service
    final Consumer<ControllerServiceNode> csConsumer = controllerService -> {
        final Resource controllerServiceResource = controllerService.getResource();
        resources.add(controllerServiceResource);
        resources.add(ResourceFactory.getPolicyResource(controllerServiceResource));
    };
    flowController.getAllControllerServices().forEach(csConsumer);
    root.findAllControllerServices().forEach(csConsumer);
    // add each reporting task
    for (final ReportingTaskNode reportingTask : flowController.getAllReportingTasks()) {
        final Resource reportingTaskResource = reportingTask.getResource();
        resources.add(reportingTaskResource);
        resources.add(ResourceFactory.getPolicyResource(reportingTaskResource));
    }
    // add each template
    for (final Template template : root.findAllTemplates()) {
        final Resource templateResource = template.getResource();
        resources.add(templateResource);
        resources.add(ResourceFactory.getPolicyResource(templateResource));
    }
    return resources;
}

Example 53 with Consumer

use of java.util.function.Consumer in project curiostack by curioswitch.

the class FileWatcher method listenForFileEvents.

private void listenForFileEvents() {
    for (; ; ) {
        final WatchKey key;
        try {
            key = watchService.take();
        } catch (ClosedWatchServiceException | InterruptedException ex) {
            return;
        }
        key.pollEvents().stream().filter(e -> e.kind() != StandardWatchEventKinds.OVERFLOW).map(e -> {
            // Only support Path
            @SuppressWarnings("unchecked") WatchEvent<Path> cast = (WatchEvent<Path>) e;
            return cast.context();
        }).forEach(path -> {
            final Path resolved;
            try {
                resolved = watchedDirs.get(key).resolve(path).toRealPath();
            } catch (IOException e) {
                logger.warn("Unexpected exception resolving path: {}", path, e);
                return;
            }
            Optional<Consumer<Path>> callback = registeredPaths.entrySet().stream().filter(e -> {
                try {
                    return e.getKey().toRealPath().equals(resolved);
                } catch (IOException ex) {
                    logger.warn("Unexpected exception resolving path: {}", e.getKey(), ex);
                    return false;
                }
            }).map(Entry::getValue).findFirst();
            if (callback.isPresent()) {
                logger.info("Processing update to path: " + resolved);
                try {
                    callback.get().accept(resolved);
                } catch (Exception e) {
                    logger.warn("Unexpected exception processing update to path: {}", resolved, e);
                }
            } else {
                logger.info("Could not find callback for path: {}", resolved);
            }
        });
        boolean valid = key.reset();
        if (!valid) {
            break;
        }
    }
}

Example 54 with Consumer

use of java.util.function.Consumer in project nifi by apache.

the class TestReportLineageToAtlas method validateAtlasUrls.

@Test
public void validateAtlasUrls() throws Exception {
    final ReportLineageToAtlas reportingTask = new ReportLineageToAtlas();
    final MockProcessContext processContext = new MockProcessContext(reportingTask);
    final MockValidationContext validationContext = new MockValidationContext(processContext);
    processContext.setProperty(ATLAS_NIFI_URL, "http://nifi.example.com:8080/nifi");
    processContext.setProperty(ATLAS_USER, "admin");
    processContext.setProperty(ATLAS_PASSWORD, "admin");
    BiConsumer<Collection<ValidationResult>, Consumer<ValidationResult>> assertResults = (rs, a) -> {
        assertTrue(rs.iterator().hasNext());
        for (ValidationResult r : rs) {
            logger.info("{}", r);
            final String subject = r.getSubject();
            if (ATLAS_URLS.getDisplayName().equals(subject)) {
                a.accept(r);
            }
        }
    };
    // Default setting.
    assertResults.accept(reportingTask.validate(validationContext), r -> assertTrue("Atlas URLs is required", !r.isValid()));
    // Invalid URL.
    processContext.setProperty(ATLAS_URLS, "invalid");
    assertResults.accept(reportingTask.validate(validationContext), r -> assertTrue("Atlas URLs is invalid", !r.isValid()));
    // Valid URL
    processContext.setProperty(ATLAS_URLS, "http://atlas.example.com:21000");
    assertTrue(processContext.isValid());
    // Valid URL with Expression
    processContext.setProperty(ATLAS_URLS, "http://atlas.example.com:${literal(21000)}");
    assertTrue(processContext.isValid());
    // Valid URLs
    processContext.setProperty(ATLAS_URLS, "http://atlas1.example.com:21000, http://atlas2.example.com:21000");
    assertTrue(processContext.isValid());
    // Invalid and Valid URLs
    processContext.setProperty(ATLAS_URLS, "invalid, http://atlas2.example.com:21000");
    assertResults.accept(reportingTask.validate(validationContext), r -> assertTrue("Atlas URLs is invalid", !r.isValid()));
}

Example 55 with Consumer

use of java.util.function.Consumer in project nifi by apache.

the class TestSchemaRecordReaderWriter method testAddOneRecordReadTwice.

@Test
public void testAddOneRecordReadTwice() throws IOException {
    final RecordField unitTestField = new SimpleRecordField("Unit Test Field", FieldType.STRING, Repetition.EXACTLY_ONE);
    final Consumer<List<RecordField>> schemaModifier = fields -> fields.add(unitTestField);
    final Map<RecordField, Object> toAdd = new HashMap<>();
    toAdd.put(unitTestField, "hello");
    try (final ByteArraySchemaRecordWriter writer = createSchemaWriter(schemaModifier, toAdd)) {
        writer.writeHeader(1L);
        writer.writeRecord(createEvent());
    }
    try (final InputStream in = new FileInputStream(journalFile);
        final TocReader tocReader = new StandardTocReader(tocFile);
        final RecordReader reader = createReader(in, journalFile.getName(), tocReader, 10000)) {
        final ProvenanceEventRecord firstEvent = reader.nextRecord();
        assertNotNull(firstEvent);
        final ProvenanceEventRecord secondEvent = reader.nextRecord();
        assertNull(secondEvent);
    }
}