Examples with FunctionTagDefinition io.automatiko.engine.workflow.base.core.FunctionTagDefinition used on opensource projects

Example 1 with FunctionTagDefinition

use of io.automatiko.engine.workflow.base.core.FunctionTagDefinition in project automatiko-engine by automatiko-io.

the class ProcessVisitor method visitProcess.

public void visitProcess(WorkflowProcess process, MethodDeclaration processMethod, ProcessMetaData metadata, String workflowType) {
    BlockStmt body = new BlockStmt();
    ClassOrInterfaceType processFactoryType = new ClassOrInterfaceType(null, ExecutableProcessFactory.class.getSimpleName());
    boolean serverless = ProcessToExecModelGenerator.isServerlessWorkflow(process);
    // create local variable factory and assign new fluent process to it
    VariableDeclarationExpr factoryField = new VariableDeclarationExpr(processFactoryType, FACTORY_FIELD_NAME);
    MethodCallExpr assignFactoryMethod = new MethodCallExpr(new NameExpr(processFactoryType.getName().asString()), "createProcess");
    assignFactoryMethod.addArgument(new StringLiteralExpr(process.getId())).addArgument(new StringLiteralExpr(workflowType)).addArgument(new BooleanLiteralExpr(serverless));
    body.addStatement(new AssignExpr(factoryField, assignFactoryMethod, AssignExpr.Operator.ASSIGN));
    // item definitions
    Set<String> visitedVariables = new HashSet<>();
    VariableScope variableScope = (VariableScope) ((io.automatiko.engine.workflow.base.core.Process) process).getDefaultContext(VariableScope.VARIABLE_SCOPE);
    visitVariableScope(variableScope, body, visitedVariables);
    visitSubVariableScopes(process.getNodes(), body, visitedVariables);
    Collection<TagDefinition> tagDefinitions = ((io.automatiko.engine.workflow.process.core.WorkflowProcess) process).getTagDefinitions();
    if (tagDefinitions != null) {
        for (TagDefinition tag : tagDefinitions) {
            if (tag instanceof FunctionTagDefinition) {
                String expression = tag.getExpression();
                Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(expression);
                if (matcher.find()) {
                    expression = matcher.group(1);
                }
                BlockStmt actionBody = new BlockStmt();
                if (serverless) {
                    MethodCallExpr evaluate = new MethodCallExpr(null, "expressionAsString").addArgument(new NameExpr("context")).addArgument(new NameExpr("exp"));
                    actionBody.addStatement(new ReturnStmt(evaluate));
                } else {
                    List<Variable> variables = variableScope.getVariables();
                    variables.stream().filter(v -> tag.getExpression().contains(v.getName())).map(ActionNodeVisitor::makeAssignment).forEach(actionBody::addStatement);
                    actionBody.addStatement(new ReturnStmt(new NameExpr(expression)));
                }
                LambdaExpr lambda = new LambdaExpr(NodeList.nodeList(new Parameter(new UnknownType(), "exp"), new Parameter(new UnknownType(), "context")), actionBody);
                body.addStatement(getFactoryMethod(FACTORY_FIELD_NAME, "tag", new StringLiteralExpr(tag.getId()), new StringLiteralExpr().setString(tag.getExpression()), lambda));
            } else {
                body.addStatement(getFactoryMethod(FACTORY_FIELD_NAME, "tag", new StringLiteralExpr(tag.getId()), new StringLiteralExpr(tag.getExpression()), new NullLiteralExpr()));
            }
        }
        if (((io.automatiko.engine.workflow.process.core.WorkflowProcess) process).getImports() != null && !((io.automatiko.engine.workflow.process.core.WorkflowProcess) process).getImports().isEmpty()) {
            NodeList<Expression> items = NodeList.nodeList(((io.automatiko.engine.workflow.process.core.WorkflowProcess) process).getImports().stream().map(s -> new StringLiteralExpr(s)).collect(Collectors.toList()));
            body.addStatement(getFactoryMethod(FACTORY_FIELD_NAME, "imports", items.toArray(Expression[]::new)));
        }
    }
    metadata.setDynamic(((io.automatiko.engine.workflow.process.core.WorkflowProcess) process).isDynamic());
    // the process itself
    body.addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_NAME, new StringLiteralExpr(process.getName()))).addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_PACKAGE_NAME, new StringLiteralExpr(process.getPackageName()))).addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_DYNAMIC, new BooleanLiteralExpr(metadata.isDynamic()))).addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_VERSION, new StringLiteralExpr(getOrDefault(process.getVersion(), DEFAULT_VERSION)))).addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_VISIBILITY, new StringLiteralExpr(getOrDefault(process.getVisibility(), WorkflowProcess.PUBLIC_VISIBILITY))));
    visitMetaData(process.getMetaData(), body, FACTORY_FIELD_NAME);
    visitHeader(process, body);
    List<Node> processNodes = new ArrayList<>();
    for (io.automatiko.engine.api.definition.process.Node procNode : process.getNodes()) {
        processNodes.add((io.automatiko.engine.workflow.process.core.Node) procNode);
    }
    visitNodes(process, processNodes, body, variableScope, metadata);
    visitConnections(process.getNodes(), body);
    String timeout = (String) process.getMetaData().get("timeout");
    if (timeout != null) {
        String extraNodeIds = (String) process.getMetaData().get("timeoutNodes");
        if (extraNodeIds != null) {
            List<Expression> arguments = new ArrayList<>();
            arguments.add(new IntegerLiteralExpr(process.getNodes().length));
            arguments.add(new StringLiteralExpr(timeout));
            arguments.addAll(Stream.of(extraNodeIds.split(",")).map(s -> new LongLiteralExpr(s)).collect(Collectors.toList()));
            body.addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_EXEC_TIMEOUT, arguments.toArray(Expression[]::new)));
        } else {
            body.addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_EXEC_TIMEOUT, new IntegerLiteralExpr(process.getNodes().length), new StringLiteralExpr(timeout)));
        }
    }
    body.addStatement(getFactoryMethod(FACTORY_FIELD_NAME, METHOD_VALIDATE));
    MethodCallExpr getProcessMethod = new MethodCallExpr(new NameExpr(FACTORY_FIELD_NAME), "getProcess");
    body.addStatement(new ReturnStmt(getProcessMethod));
    processMethod.setBody(body);
}

Example 2 with FunctionTagDefinition

use of io.automatiko.engine.workflow.base.core.FunctionTagDefinition in project automatiko-engine by automatiko-io.

the class ServerlessWorkflowFactory method createProcess.

public ExecutableProcess createProcess(Workflow workflow) {
    ExecutableProcess process = new ServerlessExecutableProcess();
    if (workflow.getId() != null && !workflow.getId().isEmpty()) {
        process.setId(workflow.getId());
    } else {
        LOGGER.info("setting default id {}", DEFAULT_WORKFLOW_ID);
        process.setId(DEFAULT_WORKFLOW_ID);
    }
    if (workflow.getName() != null && !workflow.getName().isEmpty()) {
        process.setName(workflow.getName());
    } else {
        LOGGER.info("setting default name {}", DEFAULT_WORKFLOW_NAME);
        process.setName(DEFAULT_WORKFLOW_NAME);
    }
    if (workflow.getVersion() != null && !workflow.getVersion().isEmpty()) {
        process.setVersion(workflow.getVersion());
    } else {
        LOGGER.info("no workflow version found.");
    }
    if (workflow.getMetadata() != null && workflow.getMetadata().get("package") != null) {
        process.setPackageName(workflow.getMetadata().get("package"));
    } else {
        process.setPackageName(DEFAULT_PACKAGE_NAME);
    }
    if (workflow.isKeepActive()) {
        process.setAutoComplete(false);
        process.setDynamic(true);
    } else {
        process.setAutoComplete(true);
    }
    process.setVisibility(DEFAULT_VISIBILITY);
    if (workflow.getMetadata() != null) {
        process.getMetaData().putAll(workflow.getMetadata());
    }
    if (workflow.getDescription() != null) {
        process.setMetaData("Documentation", workflow.getDescription());
    }
    if (workflow.getConstants() != null) {
        Constants constants = workflow.getConstants();
        String value = constants.getConstantsDef().toString();
        Variable constantsVariable = new Variable("contantsVariable", "$CONST", new JsonNodeDataType());
        constantsVariable.setMetaData("value", value.replaceAll("\"", "\\\""));
        process.getVariableScope().addVariable(constantsVariable);
    }
    if (workflow.getAnnotations() != null) {
        List<TagDefinition> tagDefinitions = new ArrayList<TagDefinition>();
        int counter = 0;
        for (String tag : workflow.getAnnotations()) {
            if (tag.startsWith("${")) {
                tagDefinitions.add(new FunctionTagDefinition(String.valueOf(++counter), unwrapExpression(tag), (exp, vars) -> {
                    Object result = ServerlessFunctions.expression(vars, exp);
                    if (result instanceof TextNode) {
                        return ((TextNode) result).asText();
                    }
                    return result.toString();
                }));
            } else {
                tagDefinitions.add(new StaticTagDefinition(String.valueOf(++counter), tag));
            }
        }
        ((Process) process).setTagDefinitions(tagDefinitions);
    }
    return process;
}

Example 3 with FunctionTagDefinition

use of io.automatiko.engine.workflow.base.core.FunctionTagDefinition in project automatiko-engine by automatiko-io.

the class ProcessHandler method processTags.

protected void processTags(WorkflowProcess process) {
    String tags = (String) process.getMetaData().get("tags");
    List<TagDefinition> tagDefinitions = new ArrayList<TagDefinition>();
    if (tags != null) {
        String[] tagList = tags.split(",");
        int counter = 0;
        for (String tag : tagList) {
            boolean isExpression = PatternConstants.PARAMETER_MATCHER.matcher(tag).matches();
            if (isExpression) {
                tagDefinitions.add(new FunctionTagDefinition(String.valueOf(++counter), tag, (exp, vars) -> {
                    Map<String, Object> replacements = new HashMap<>();
                    Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(exp);
                    while (matcher.find()) {
                        String paramName = matcher.group(1);
                        Object value = MVEL.executeExpression(exp, vars.getVariables());
                        replacements.put(paramName, value);
                    }
                    for (Map.Entry<String, Object> replacement : replacements.entrySet()) {
                        exp = exp.replace("#{" + replacement.getKey() + "}", replacement.getValue().toString());
                    }
                    return exp;
                }));
            } else {
                tagDefinitions.add(new StaticTagDefinition(String.valueOf(++counter), tag));
            }
        }
    }
    ((Process) process).setTagDefinitions(tagDefinitions);
}