Examples with Node io.automatiko.engine.api.definition.process.Node used on opensource projects

Example 1 with Node

use of io.automatiko.engine.api.definition.process.Node in project automatiko-engine by automatiko-io.

the class FunctionFlowGenerator method generate.

public String generate() {
    CompilationUnit clazz = parse(this.getClass().getResourceAsStream("/class-templates/FunctionFlowTemplate.java"));
    clazz.setPackageDeclaration(process.getPackageName());
    clazz.addImport(modelfqcn);
    ClassOrInterfaceDeclaration template = clazz.findFirst(ClassOrInterfaceDeclaration.class).orElseThrow(() -> new IllegalStateException("Cannot find the class in FunctionFlowTemplate"));
    template.setName(functionClazzName);
    List<String> discoveredFunctions = new ArrayList<>();
    // first to initiate the function flow
    template.findFirst(MethodDeclaration.class, md -> md.getNameAsString().equals("startTemplate")).ifPresent(md -> {
        md.setName(processId.toLowerCase() + version);
        md.getBody().get().findFirst(StringLiteralExpr.class, s -> s.getValue().equals("$TypePrefix$")).ifPresent(s -> s.setValue(process.getPackageName() + "." + processId + fversion));
        if (useInjection()) {
            String trigger = functionTrigger(process);
            String filter = functionFilter(process);
            if (filter != null) {
                Matcher matcher = PARAMETER_MATCHER.matcher(filter);
                while (matcher.find()) {
                    String paramName = matcher.group(1);
                    Optional<String> value = context.getApplicationProperty(paramName);
                    if (value.isPresent()) {
                        filter = filter.replaceAll("\\{" + paramName + "\\}", value.get());
                    } else {
                        throw new IllegalArgumentException("Missing argument declared in as function filter with name '" + paramName + "'. Define it in application.properties file");
                    }
                }
            }
            annotator.withCloudEventMapping(md, trigger, filter);
        }
    });
    MethodDeclaration callTemplate = template.findFirst(MethodDeclaration.class, md -> md.getNameAsString().equals("callTemplate")).get();
    discoveredFunctions.add(definedFunctionTrigger(process));
    // for each "execution" node add new function
    for (Node node : process.getNodesRecursively()) {
        if (isExecutionNode(node)) {
            discoveredFunctions.add(definedFunctionTrigger(node));
            MethodDeclaration flowStepFunction = callTemplate.clone();
            if (useInjection()) {
                String trigger = functionTrigger(node);
                String filter = functionFilter(node);
                if (filter != null) {
                    Matcher matcher = PARAMETER_MATCHER.matcher(filter);
                    while (matcher.find()) {
                        String paramName = matcher.group(1);
                        Optional<String> value = context.getApplicationProperty(paramName);
                        if (value.isPresent() && !value.get().isEmpty()) {
                            filter = filter.replaceAll("\\{" + paramName + "\\}", value.get());
                        } else {
                            throw new IllegalArgumentException("Missing argument declared in as function filter with name '" + paramName + "'. Define it in application.properties file");
                        }
                    }
                }
                annotator.withCloudEventMapping(flowStepFunction, trigger, filter);
            }
            flowStepFunction.getBody().get().findFirst(StringLiteralExpr.class, s -> s.getValue().equals("$StartFromNode$")).ifPresent(s -> s.setValue((String) node.getMetaData().get("UniqueId")));
            flowStepFunction.getBody().get().findFirst(StringLiteralExpr.class, s -> s.getValue().equals("$TypePrefix$")).ifPresent(s -> s.setValue(process.getPackageName() + "." + processId + fversion + "."));
            flowStepFunction.getBody().get().findFirst(StringLiteralExpr.class, s -> s.getValue().equals("$ThisNode$")).ifPresent(s -> s.setValue(node.getName()));
            flowStepFunction.setName(sanitizeIdentifier(node.getName() + version).toLowerCase());
            template.addMember(flowStepFunction);
        } else if (node instanceof EndNode || node instanceof FaultNode) {
            discoveredFunctions.add(definedFunctionTrigger(node));
        }
    }
    // remove the template method
    callTemplate.removeForced();
    // process signals
    MethodDeclaration signalTemplate = template.findFirst(MethodDeclaration.class, md -> md.getNameAsString().equals("signalTemplate")).get();
    Optional.ofNullable(signals).ifPresent(signalsMap -> {
        AtomicInteger index = new AtomicInteger(0);
        signalsMap.entrySet().stream().filter(e -> Objects.nonNull(e.getKey())).forEach(entry -> {
            String signalName = entry.getKey();
            String signalType = entry.getValue();
            MethodDeclaration flowSignalFunction = produceSignalFunction("", signalName, signalType, signalTemplate, index, signalNodes.get(signalName));
            template.addMember(flowSignalFunction);
        });
    });
    if (triggers != null && !triggers.isEmpty()) {
        AtomicInteger index = new AtomicInteger(0);
        for (TriggerMetaData trigger : triggers) {
            if (trigger.getType().equals(TriggerMetaData.TriggerType.ConsumeMessage)) {
                String signalName = trigger.getName();
                String signalType = trigger.getDataType();
                MethodDeclaration flowSignalFunction = produceSignalFunction("Message-", signalName, signalType, signalTemplate, index, (Node) trigger.getContext("_node_"));
                VariableDeclarationExpr correlationVar = flowSignalFunction.findFirst(VariableDeclarationExpr.class, vd -> vd.getVariable(0).getNameAsString().equals("correlation")).get();
                if (trigger.getCorrelation() != null) {
                    correlationVar.getVariable(0).setInitializer(new StringLiteralExpr(trigger.getCorrelation()));
                } else if (trigger.getCorrelationExpression() != null) {
                    correlationVar.getVariable(0).setInitializer(new NameExpr(trigger.getCorrelationExpression()));
                }
                template.addMember(flowSignalFunction);
            }
        }
    }
    // remove the template method
    signalTemplate.removeForced();
    Map<String, String> typeInterpolations = new HashMap<>();
    typeInterpolations.put("$Clazz$", functionClazzName);
    typeInterpolations.put("$Type$", dataClazzName);
    template.findAll(ClassOrInterfaceType.class).forEach(cls -> interpolateTypes(cls, typeInterpolations));
    if (useInjection()) {
        template.findAll(FieldDeclaration.class, CodegenUtils::isProcessField).forEach(fd -> annotator.withNamedInjection(fd, processId + version));
        template.findAll(FieldDeclaration.class, CodegenUtils::isApplicationField).forEach(fd -> annotator.withInjection(fd));
        template.findAll(FieldDeclaration.class, CodegenUtils::isIdentitySupplierField).forEach(fd -> annotator.withInjection(fd));
        template.findAll(FieldDeclaration.class, CodegenUtils::isEventSourceField).forEach(fd -> annotator.withInjection(fd));
        template.findAll(MethodDeclaration.class, md -> md.isPublic()).forEach(md -> annotator.withFunction(md));
    }
    NodeList<Expression> items = NodeList.nodeList(discoveredFunctions.stream().map(s -> new StringLiteralExpr(s)).collect(Collectors.toList()));
    template.addAnnotation(new NormalAnnotationExpr(new Name(Generated.class.getCanonicalName()), NodeList.nodeList(new MemberValuePair("value", new ArrayInitializerExpr(items)), new MemberValuePair("reference", new StringLiteralExpr(context.getApplicationProperty("quarkus.google.cloud.project-id").orElse("missing"))), new MemberValuePair("name", new StringLiteralExpr(StringUtils.capitalize(ProcessToExecModelGenerator.extractProcessId(processId, version)))), new MemberValuePair("hidden", new BooleanLiteralExpr(false)))));
    template.getMembers().sort(new BodyDeclarationComparator());
    ImportsOrganizer.organize(clazz);
    return clazz.toString();
}

Example 2 with Node

use of io.automatiko.engine.api.definition.process.Node in project automatiko-engine by automatiko-io.

the class LightProcessRuntime method initProcessEventListener.

private void initProcessEventListener(Process process) {
    if (process instanceof ExecutableProcess) {
        for (Node node : ((ExecutableProcess) process).getNodes()) {
            if (node instanceof StartNode) {
                StartNode startNode = (StartNode) node;
                if (startNode != null) {
                    List<Trigger> triggers = startNode.getTriggers();
                    if (triggers != null) {
                        for (Trigger trigger : triggers) {
                            if (trigger instanceof EventTrigger) {
                                final List<EventFilter> filters = ((EventTrigger) trigger).getEventFilters();
                                String type = null;
                                for (EventFilter filter : filters) {
                                    if (filter instanceof EventTypeFilter) {
                                        type = ((EventTypeFilter) filter).getType();
                                    }
                                }
                                StartProcessEventListener listener = new StartProcessEventListener(process.getId(), filters, trigger.getInMappings(), startNode.getEventTransformer());
                                signalManager.addEventListener(type, listener);
                                ((ExecutableProcess) process).getRuntimeMetaData().put("StartProcessEventType", type);
                                ((ExecutableProcess) process).getRuntimeMetaData().put("StartProcessEventListener", listener);
                            }
                        }
                    }
                }
            }
        }
    }
}

Example 3 with Node

use of io.automatiko.engine.api.definition.process.Node in project automatiko-engine by automatiko-io.

the class CompensationScopeInstance method handleException.

public void handleException(io.automatiko.engine.api.runtime.process.NodeInstance nodeInstance, ExceptionHandler handler, String compensationActivityRef, Object dunno) {
    WorkflowProcessInstanceImpl processInstance = (WorkflowProcessInstanceImpl) getProcessInstance();
    NodeInstanceContainer nodeInstanceContainer = (NodeInstanceContainer) getContextInstanceContainer();
    if (handler instanceof CompensationHandler) {
        CompensationHandler compensationHandler = (CompensationHandler) handler;
        try {
            Node handlerNode = compensationHandler.getnode();
            if (handlerNode instanceof BoundaryEventNode) {
                NodeInstance compensationHandlerNodeInstance = nodeInstanceContainer.getNodeInstance(handlerNode);
                compensationInstances.add(compensationHandlerNodeInstance);
                // The BoundaryEventNodeInstance.signalEvent() contains the necessary logic
                // to check whether or not compensation may proceed (? : (not-active +
                // completed))
                EventNodeInstance eventNodeInstance = (EventNodeInstance) compensationHandlerNodeInstance;
                eventNodeInstance.signalEvent("Compensation", compensationActivityRef);
            } else if (handlerNode instanceof EventSubProcessNode) {
                // Check that subprocess parent has completed.
                List<String> completedIds = processInstance.getCompletedNodeIds();
                if (completedIds.contains(((NodeImpl) handlerNode.getParentContainer()).getMetaData("UniqueId"))) {
                    NodeInstance subProcessNodeInstance = ((NodeInstanceContainer) nodeInstanceContainer).getNodeInstance((Node) handlerNode.getParentContainer());
                    compensationInstances.add(subProcessNodeInstance);
                    NodeInstance compensationHandlerNodeInstance = ((NodeInstanceContainer) subProcessNodeInstance).getNodeInstance(handlerNode);
                    compensationInstances.add(compensationHandlerNodeInstance);
                    EventSubProcessNodeInstance eventNodeInstance = (EventSubProcessNodeInstance) compensationHandlerNodeInstance;
                    eventNodeInstance.signalEvent("Compensation", compensationActivityRef);
                }
            }
            assert handlerNode instanceof BoundaryEventNode || handlerNode instanceof EventSubProcessNode : "Unexpected compensation handler node type : " + handlerNode.getClass().getSimpleName();
        } catch (Exception e) {
            throwWorkflowRuntimeException(nodeInstanceContainer, processInstance, "Unable to execute compensation.", e);
        }
    } else {
        Exception e = new IllegalArgumentException("Unsupported compensation handler: " + handler);
        throwWorkflowRuntimeException(nodeInstanceContainer, processInstance, e.getMessage(), e);
    }
}

Example 4 with Node

use of io.automatiko.engine.api.definition.process.Node in project automatiko-engine by automatiko-io.

the class DefinitionsHandler method postProcessNodes.

protected void postProcessNodes(NodeContainer nodeContainer, List<Variable> parentVariables, ExtensibleXmlParser parser) throws SAXException {
    for (Node node : nodeContainer.getNodes()) {
        List<Variable> variables = new LinkedList<>(parentVariables);
        VariableScope variableScope = (VariableScope) ((ContextContainer) nodeContainer).getDefaultContext(VariableScope.VARIABLE_SCOPE);
        if (variableScope != null) {
            variables.addAll(variableScope.getVariables());
        }
        if (node instanceof NodeContainer) {
            postProcessNodes((NodeContainer) node, variables, parser);
        } else {
            if (node instanceof ActionNode) {
                ActionNode actionNode = (ActionNode) node;
                ProcessAction action = actionNode.getAction();
                if (action instanceof ConsequenceAction) {
                    ConsequenceAction consequenceAction = (ConsequenceAction) action;
                    switch(consequenceAction.getDialect()) {
                        case "java":
                            if (actionNode.getAction().getMetaData("Action") == null) {
                                actionNode.getAction().setMetaData("Action", new MvelAction(actionNode));
                            }
                            break;
                        case "mvel":
                            if (actionNode.getAction().getMetaData("Action") == null) {
                                actionNode.getAction().setMetaData("Action", new MvelAction(actionNode));
                            }
                            break;
                        default:
                    }
                }
            }
        }
    }
}

Example 5 with Node

use of io.automatiko.engine.api.definition.process.Node in project automatiko-engine by automatiko-io.

the class ServerlessWorkflowFactory method addExecutionTimeout.

public void addExecutionTimeout(long id, WorkflowExecTimeout timeout, ExecutableProcess process) {
    process.setMetaData("timeout", timeout.getDuration());
    if (timeout.getRunBefore() != null) {
        List<Long> timeoutNodes = new ArrayList<>();
        for (Node node : process.getNodes()) {
            if (node.getName().equals(timeout.getRunBefore())) {
                timeoutNodes.add(node.getId());
                collectConnectedNodes(node, process, timeoutNodes);
                break;
            }
        }
        process.setMetaData("timeoutNodes", timeoutNodes.stream().map(l -> Long.toString(l)).collect(Collectors.joining(",")));
    }
}