Examples with Engine io.takari.bpm.api.Engine used on opensource projects

Example 1 with Engine

use of io.takari.bpm.api.Engine in project concord by walmartlabs.

the class EngineFactory method create.

@SuppressWarnings("deprecation")
public Engine create(ProjectDefinition project, Path baseDir, Collection<String> activeProfiles, Set<String> metaVariables, EventConfiguration eventCfg) {
    Path attachmentsDir = baseDir.resolve(InternalConstants.Files.JOB_ATTACHMENTS_DIR_NAME);
    Path stateDir = attachmentsDir.resolve(InternalConstants.Files.JOB_STATE_DIR_NAME);
    Path eventsDir = stateDir.resolve("events");
    Path instancesDir = stateDir.resolve("instances");
    Path formsDir = stateDir.resolve(InternalConstants.Files.JOB_FORMS_DIR_NAME);
    try {
        Files.createDirectories(eventsDir);
        Files.createDirectories(instancesDir);
        Files.createDirectories(formsDir);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    ExpressionManager expressionManager = new DefaultExpressionManager(new String[] { InternalConstants.Context.CONTEXT_KEY, InternalConstants.Context.EXECUTION_CONTEXT_KEY }, new TaskResolver(taskRegistry), new InjectVariableELResolver()) {

        @Override
        protected ELResolver createResolver(ExecutionContext ctx) {
            CompositeELResolver cr = new CompositeELResolver();
            cr.add(new ExecutionContextVariableResolver(ctx));
            for (ELResolver r : resolvers) {
                cr.add(r);
            }
            return cr;
        }
    };
    FormStorage formStorage = new FileFormStorage(formsDir);
    // here we create a separate ContextFactory to avoid circular references
    // between ConcordFormService and ConcordExecutionContextFactory
    // TODO find a better way
    FormService formService = new ConcordFormService(new DefaultExecutionContextFactory(expressionManager), new NoopResumeHandler(), formStorage);
    ProtectedVarContext protectedVarContext = new ProtectedVarContext(PolicyEngineHolder.INSTANCE.getEngine());
    ConcordExecutionContextFactory contextFactory = new ConcordExecutionContextFactory(expressionManager, protectedVarContext, formService);
    EventStorage eventStorage = new FileEventStorage(eventsDir);
    PersistenceManager persistenceManager = new FilePersistenceManager(instancesDir);
    ProjectDefinitionAdapter adapter = new ProjectDefinitionAdapter(project, activeProfiles, baseDir);
    UserTaskHandler uth = new FormTaskHandler(contextFactory, adapter.forms(), formService);
    Configuration cfg = new Configuration();
    cfg.setInterpolateInputVariables(true);
    cfg.setWrapAllExceptionsAsBpmnErrors(true);
    cfg.setCopyAllCallActivityOutVariables(true);
    ElementEventProcessor eventProcessor;
    if (eventCfg.isRecordEvents()) {
        eventProcessor = new DefaultElementEventProcessor(apiClientFactory, adapter.processes());
    } else {
        eventProcessor = new NopElementEventProcessor();
    }
    ProcessOutVariables outVariables = new ProcessOutVariables(contextFactory);
    List<TaskInterceptor> taskInterceptors = new ArrayList<>();
    taskInterceptors.add(protectedVarContext);
    taskInterceptors.add(new TaskEventInterceptor(eventCfg, eventProcessor));
    taskInterceptors.add(new PolicyPreprocessor(baseDir));
    Engine engine = new EngineBuilder().withContextFactory(contextFactory).withLockManager(new NoopLockManager()).withExpressionManager(expressionManager).withDefinitionProvider(adapter.processes()).withTaskRegistry(taskRegistry).withJavaDelegateHandler(new JavaDelegateHandlerImpl(taskInterceptors)).withEventStorage(eventStorage).withPersistenceManager(persistenceManager).withUserTaskHandler(uth).withConfiguration(cfg).withListener(new ProcessOutVariablesListener(attachmentsDir, outVariables)).withListener(new VariablesSnapshotListener(stateDir)).withResourceResolver(new ResourceResolverImpl(baseDir)).build();
    engine.addInterceptor(new ProcessElementInterceptor(eventProcessor, new ProcessMetadataProcessor(apiClientFactory, metaVariables)));
    return engine;
}

Example 2 with Engine

use of io.takari.bpm.api.Engine in project concord by walmartlabs.

the class AbstractYamlParserTest method setUp.

@BeforeEach
@SuppressWarnings("unchecked")
public void setUp() {
    taskRegistry = new TestServiceTaskRegistry();
    forms = new HashMap<>();
    FormStorage fs = new TestFormStorage(forms);
    ExpressionManager expressionManager = new DefaultExpressionManager(taskRegistry);
    DefaultExecutionContextFactory contextFactory = new DefaultExecutionContextFactory(expressionManager);
    DefaultFormService.ResumeHandler rs = (form, args) -> getEngine().resume(form.getProcessBusinessKey(), form.getEventName(), args);
    formService = new DefaultFormService(contextFactory, rs, fs) {

        @Override
        public FormField toFormField(Map<String, Object> m) {
            Map.Entry<String, Object> entry = m.entrySet().iterator().next();
            Map<String, Object> opts = (Map<String, Object>) entry.getValue();
            return new FormField.Builder(entry.getKey(), (String) opts.get("type")).build();
        }
    };
    ResourceResolver resourceResolver = ClassLoader::getSystemResourceAsStream;
    Configuration cfg = new Configuration();
    cfg.setInterpolateInputVariables(true);
    cfg.setWrapAllExceptionsAsBpmnErrors(true);
    cfg.setCopyAllCallActivityOutVariables(true);
    engine = new EngineBuilder().withDefinitionProvider(workflowProvider.processes()).withTaskRegistry(taskRegistry).withUserTaskHandler(new FormTaskHandler(contextFactory, workflowProvider.forms(), formService)).withResourceResolver(resourceResolver).withConfiguration(cfg).build();
}