Examples with DataAssociation io.automatiko.engine.workflow.process.core.node.DataAssociation used on opensource projects

Example 11 with DataAssociation

use of io.automatiko.engine.workflow.process.core.node.DataAssociation in project automatiko-engine by automatiko-io.

the class MappableNodeFactory method inMappingWithJqAssignment.

default MappableNodeFactory inMappingWithJqAssignment(String inputExpression, String... params) {
    Assignment assignment = new Assignment("jq", null, null);
    assignment.setMetaData("Action", new TaskInputJqAssignmentAction(inputExpression, params));
    getMappableNode().addInAssociation(new DataAssociation(Collections.emptyList(), "", Arrays.asList(assignment), null));
    return this;
}

Example 12 with DataAssociation

use of io.automatiko.engine.workflow.process.core.node.DataAssociation in project automatiko-engine by automatiko-io.

the class ProcessHandler method postProcessNodes.

private void postProcessNodes(ExecutableProcess process, NodeContainer container) {
    List<String> eventSubProcessHandlers = new ArrayList<String>();
    for (Node node : container.getNodes()) {
        if (node instanceof StartNode) {
            List<DataAssociation> associations = ((StartNode) node).getOutAssociations();
            if (associations != null) {
                for (DataAssociation da : associations) {
                    VariableScope scope = (VariableScope) process.getDefaultContext(VariableScope.VARIABLE_SCOPE);
                    Variable variable = scope.findVariable(da.getTarget());
                    if (variable != null) {
                        da.setTarget(variable.getName());
                    }
                }
            }
        } else if (node instanceof StateNode) {
            StateNode stateNode = (StateNode) node;
            String condition = (String) stateNode.getMetaData("Condition");
            stateNode.setCondition(context -> {
                return (boolean) MVEL.executeExpression(condition, context.getProcessInstance().getVariables());
            });
        } else if (node instanceof NodeContainer) {
            // prepare event sub process
            if (node instanceof EventSubProcessNode) {
                EventSubProcessNode eventSubProcessNode = (EventSubProcessNode) node;
                Node[] nodes = eventSubProcessNode.getNodes();
                for (Node subNode : nodes) {
                    // avoids cyclomatic complexity
                    if (subNode == null || !(subNode instanceof StartNode)) {
                        continue;
                    }
                    List<Trigger> triggers = ((StartNode) subNode).getTriggers();
                    if (triggers == null) {
                        continue;
                    }
                    for (Trigger trigger : triggers) {
                        if (trigger instanceof EventTrigger) {
                            final List<EventFilter> filters = ((EventTrigger) trigger).getEventFilters();
                            for (EventFilter filter : filters) {
                                if (filter instanceof EventTypeFilter) {
                                    eventSubProcessNode.addEvent((EventTypeFilter) filter);
                                    String type = ((EventTypeFilter) filter).getType();
                                    if (type.startsWith("Error-") || type.startsWith("Escalation")) {
                                        String faultCode = (String) subNode.getMetaData().get("FaultCode");
                                        String replaceRegExp = "Error-|Escalation-";
                                        final String signalType = type;
                                        ExceptionScope exceptionScope = (ExceptionScope) ((ContextContainer) eventSubProcessNode.getParentContainer()).getDefaultContext(ExceptionScope.EXCEPTION_SCOPE);
                                        if (exceptionScope == null) {
                                            exceptionScope = new ExceptionScope();
                                            ((ContextContainer) eventSubProcessNode.getParentContainer()).addContext(exceptionScope);
                                            ((ContextContainer) eventSubProcessNode.getParentContainer()).setDefaultContext(exceptionScope);
                                        }
                                        String faultVariable = null;
                                        if (trigger.getInAssociations() != null && !trigger.getInAssociations().isEmpty()) {
                                            faultVariable = findVariable(trigger.getInAssociations().get(0).getSources().get(0), process.getVariableScope());
                                        }
                                        ActionExceptionHandler exceptionHandler = new ActionExceptionHandler();
                                        ConsequenceAction action = new ConsequenceAction("java", "");
                                        action.setMetaData("Action", new SignalProcessInstanceAction(signalType, faultVariable, SignalProcessInstanceAction.PROCESS_INSTANCE_SCOPE));
                                        exceptionHandler.setAction(action);
                                        exceptionHandler.setFaultVariable(faultVariable);
                                        exceptionHandler.setRetryAfter((Integer) subNode.getMetaData().get("ErrorRetry"));
                                        exceptionHandler.setRetryIncrement((Integer) subNode.getMetaData().get("ErrorRetryIncrement"));
                                        if (subNode.getMetaData().get("ErrorRetryIncrementMultiplier") != null) {
                                            exceptionHandler.setRetryIncrementMultiplier(((Number) subNode.getMetaData().get("ErrorRetryIncrementMultiplier")).floatValue());
                                        }
                                        exceptionHandler.setRetryLimit((Integer) subNode.getMetaData().get("ErrorRetryLimit"));
                                        if (faultCode != null) {
                                            String trimmedType = type.replaceFirst(replaceRegExp, "");
                                            for (String error : trimmedType.split(",")) {
                                                exceptionScope.setExceptionHandler(error, exceptionHandler);
                                                eventSubProcessHandlers.add(error);
                                            }
                                        } else {
                                            exceptionScope.setExceptionHandler(faultCode, exceptionHandler);
                                        }
                                    } else if (type.equals("Compensation")) {
                                        // 1. Find the parent sub-process to this event sub-process
                                        NodeContainer parentSubProcess;
                                        NodeContainer subProcess = eventSubProcessNode.getParentContainer();
                                        Object isForCompensationObj = eventSubProcessNode.getMetaData("isForCompensation");
                                        if (isForCompensationObj == null) {
                                            eventSubProcessNode.setMetaData("isForCompensation", true);
                                            logger.warn("Overriding empty or false value of \"isForCompensation\" attribute on Event Sub-Process [" + eventSubProcessNode.getMetaData("UniqueId") + "] and setting it to true.");
                                        }
                                        if (subProcess instanceof ExecutableProcess) {
                                            // (instance)?!?
                                            throw new IllegalArgumentException("Compensation Event Sub-Processes at the process level are not supported.");
                                        }
                                        parentSubProcess = ((Node) subProcess).getParentContainer();
                                        // 2. The event filter (never fires, purely for dumping purposes) has
                                        // already been added
                                        // 3. Add compensation scope
                                        String compensationHandlerId = (String) ((CompositeNode) subProcess).getMetaData("UniqueId");
                                        addCompensationScope(process, eventSubProcessNode, parentSubProcess, compensationHandlerId);
                                    }
                                }
                            }
                        } else if (trigger instanceof ConstraintTrigger) {
                            ConstraintTrigger constraintTrigger = (ConstraintTrigger) trigger;
                            if (constraintTrigger.getConstraint() != null) {
                                String processId = ((ExecutableProcess) container).getId();
                                String type = "RuleFlowStateEventSubProcess-Event-" + processId + "-" + eventSubProcessNode.getUniqueId();
                                EventTypeFilter eventTypeFilter = new EventTypeFilter();
                                eventTypeFilter.setType(type);
                                eventSubProcessNode.addEvent(eventTypeFilter);
                                eventSubProcessNode.addEvent("variableChanged");
                                ((StartNode) subNode).setCondition(context -> {
                                    return (boolean) MVEL.executeExpression(constraintTrigger.getConstraint(), context.getProcessInstance().getVariables());
                                });
                            }
                        }
                    }
                }
            // for( Node subNode : nodes)
            }
            postProcessNodes(process, (NodeContainer) node);
        } else if (node instanceof EndNode) {
            handleIntermediateOrEndThrowCompensationEvent((EndNode) node);
        } else if (node instanceof ActionNode) {
            handleIntermediateOrEndThrowCompensationEvent((ActionNode) node);
        } else if (node instanceof EventNode) {
            final EventNode eventNode = (EventNode) node;
            if (!(eventNode instanceof BoundaryEventNode) && eventNode.getDefaultIncomingConnections().size() == 0) {
                throw new IllegalArgumentException("Event node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection");
            }
        }
    }
    // handler
    for (Node node : container.getNodes()) {
        if (node instanceof FaultNode) {
            FaultNode faultNode = (FaultNode) node;
            if (eventSubProcessHandlers.contains(faultNode.getFaultName())) {
                faultNode.setTerminateParent(false);
            }
        }
    }
}

Example 13 with DataAssociation

use of io.automatiko.engine.workflow.process.core.node.DataAssociation in project automatiko-engine by automatiko-io.

the class ScriptTaskHandler method readDataOutputAssociation.

protected void readDataOutputAssociation(org.w3c.dom.Node xmlNode, ActionNode actionNode, Map<String, String> dataOutputs) {
    // sourceRef
    org.w3c.dom.Node subNode = xmlNode.getFirstChild();
    List<String> sources = new ArrayList<>();
    sources.add(subNode.getTextContent());
    subNode = subNode.getNextSibling();
    while ("sourceRef".equals(subNode.getNodeName())) {
        sources.add(subNode.getTextContent());
        subNode = subNode.getNextSibling();
    }
    // targetRef
    String target = subNode.getTextContent();
    // transformation
    Transformation transformation = null;
    subNode = subNode.getNextSibling();
    if (subNode != null && "transformation".equals(subNode.getNodeName())) {
        String lang = subNode.getAttributes().getNamedItem("language").getNodeValue();
        String expression = subNode.getTextContent();
        DataTransformer transformer = transformerRegistry.find(lang);
        if (transformer == null) {
            throw new IllegalArgumentException("No transformer registered for language " + lang);
        }
        transformation = new Transformation(lang, expression);
        subNode = subNode.getNextSibling();
    }
    // assignments
    List<Assignment> assignments = new LinkedList<Assignment>();
    while (subNode != null) {
        String expressionLang = ((Element) subNode).getAttribute("expressionLanguage");
        if (expressionLang == null || expressionLang.trim().isEmpty()) {
            expressionLang = "XPath";
        }
        org.w3c.dom.Node ssubNode = subNode.getFirstChild();
        String from = ssubNode.getTextContent();
        String to = ssubNode.getNextSibling().getTextContent();
        assignments.add(new Assignment(expressionLang, from, to));
        subNode = subNode.getNextSibling();
    }
    actionNode.addOutAssociation(new DataAssociation(sources.stream().map(source -> dataOutputs.get(source)).collect(Collectors.toList()), target, assignments, transformation));
}

Example 14 with DataAssociation

use of io.automatiko.engine.workflow.process.core.node.DataAssociation in project automatiko-engine by automatiko-io.

the class WorkItemNodeInstance method createWorkItem.

@SuppressWarnings({ "unchecked", "rawtypes" })
protected WorkItem createWorkItem(WorkItemNode workItemNode) {
    Work work = workItemNode.getWork();
    if (workItem == null) {
        workItem = newWorkItem();
        ((WorkItemImpl) workItem).setName(work.getName());
        ((WorkItemImpl) workItem).setProcessInstanceId(getProcessInstance().getId());
        ((WorkItemImpl) workItem).setParentProcessInstanceId(getProcessInstance().getParentProcessInstanceId());
        ((WorkItemImpl) workItem).setParameters(new HashMap<>(work.getParameters()));
        workItem.setStartDate(new Date());
    }
    // if there are any dynamic parameters add them
    if (dynamicParameters != null) {
        workItem.getParameters().putAll(dynamicParameters);
    }
    for (DataAssociation association : workItemNode.getInAssociations()) {
        if (association.getTransformation() != null) {
            Transformation transformation = association.getTransformation();
            DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
            if (transformer != null) {
                Object parameterValue = transformer.transform(transformation.getCompiledExpression(), getSourceParameters(association));
                if (parameterValue != null) {
                    ((WorkItemImpl) workItem).setParameter(association.getTarget(), parameterValue);
                }
            }
        } else if (association.getAssignments() == null || association.getAssignments().isEmpty()) {
            Object parameterValue = null;
            VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, association.getSources().get(0));
            if (variableScopeInstance != null) {
                parameterValue = variableScopeInstance.getVariable(association.getSources().get(0));
            } else {
                try {
                    ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                    parameterValue = evaluator.evaluate(association.getSources().get(0), new NodeInstanceResolverFactory(this));
                } catch (Throwable t) {
                    logger.error("Could not find variable scope for variable {}", association.getSources().get(0));
                    logger.error("when trying to execute Work Item {}", work.getName());
                    logger.error("Continuing without setting parameter.");
                }
            }
            if (parameterValue != null) {
                ((WorkItemImpl) workItem).setParameter(association.getTarget(), parameterValue);
            }
        } else {
            association.getAssignments().stream().forEach(this::handleAssignment);
        }
    }
    for (Map.Entry<String, Object> entry : workItem.getParameters().entrySet()) {
        if (entry.getValue() instanceof String) {
            String s = (String) entry.getValue();
            Map<String, Object> replacements = new HashMap<>();
            Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(s);
            while (matcher.find()) {
                String paramName = matcher.group(1);
                String replacementKey = paramName;
                String defaultValue = "";
                if (paramName.contains(":")) {
                    String[] items = paramName.split(":");
                    paramName = items[0];
                    defaultValue = items[1];
                }
                if (replacements.get(replacementKey) == null) {
                    VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, paramName);
                    if (variableScopeInstance != null) {
                        Object variableValue = variableScopeInstance.getVariable(paramName);
                        Object variableValueString = variableValue == null ? defaultValue : variableValue;
                        replacements.put(replacementKey, variableValueString);
                    } else {
                        try {
                            ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                            Object variableValue = evaluator.evaluate(paramName, new NodeInstanceResolverFactory(this));
                            Object variableValueString = variableValue == null ? defaultValue : variableValue;
                            replacements.put(replacementKey, variableValueString);
                        } catch (Throwable t) {
                            logger.error("Could not find variable scope for variable {}", paramName);
                            logger.error("when trying to replace variable in string for Work Item {}", work.getName());
                            logger.error("Continuing without setting parameter.");
                        }
                    }
                }
            }
            if (replacements.size() > 1) {
                for (Map.Entry<String, Object> replacement : replacements.entrySet()) {
                    s = s.replace("#{" + replacement.getKey() + "}", replacement.getValue().toString());
                }
                ((WorkItemImpl) workItem).setParameter(entry.getKey(), s);
            } else if (replacements.size() == 1) {
                ((WorkItemImpl) workItem).setParameter(entry.getKey(), replacements.values().iterator().next());
            }
        }
    }
    return workItem;
}

Example 15 with DataAssociation

use of io.automatiko.engine.workflow.process.core.node.DataAssociation in project automatiko-engine by automatiko-io.

the class WorkItemNodeInstance method triggerCompleted.

@SuppressWarnings({ "unchecked", "rawtypes" })
public void triggerCompleted(WorkItem workItem) {
    this.workItem = workItem;
    WorkItemNode workItemNode = getWorkItemNode();
    if (workItemNode != null && workItem.getState() == WorkItem.ABORTED) {
        cancel();
        continueToNextNode(io.automatiko.engine.workflow.process.core.Node.CONNECTION_DEFAULT_TYPE, workItemNode);
        return;
    } else if (workItemNode != null && workItem.getState() == WorkItem.COMPLETED) {
        validateWorkItemResultVariable(getProcessInstance().getProcessName(), workItemNode.getOutAssociations(), workItem);
        for (Iterator<DataAssociation> iterator = getWorkItemNode().getOutAssociations().iterator(); iterator.hasNext(); ) {
            DataAssociation association = iterator.next();
            if (association.getTransformation() != null) {
                Transformation transformation = association.getTransformation();
                DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
                if (transformer != null) {
                    Map<String, Object> dataSet = new HashMap<String, Object>();
                    if (getNodeInstanceContainer() instanceof CompositeContextNodeInstance) {
                        VariableScopeInstance variableScopeInstance = (VariableScopeInstance) ((CompositeContextNodeInstance) getNodeInstanceContainer()).getContextInstance(VariableScope.VARIABLE_SCOPE);
                        if (variableScopeInstance != null) {
                            dataSet.putAll(variableScopeInstance.getVariables());
                        }
                    }
                    dataSet.putAll(workItem.getParameters());
                    dataSet.putAll(workItem.getResults());
                    Object parameterValue = transformer.transform(transformation.getCompiledExpression(), dataSet);
                    VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, association.getTarget());
                    if (variableScopeInstance != null && parameterValue != null) {
                        variableScopeInstance.getVariableScope().validateVariable(getProcessInstance().getProcessName(), association.getTarget(), parameterValue);
                        variableScopeInstance.setVariable(this, association.getTarget(), parameterValue);
                    } else {
                        logger.warn("Could not find variable scope for variable {}", association.getTarget());
                        logger.warn("when trying to complete Work Item {}", workItem.getName());
                        logger.warn("Continuing without setting variable.");
                    }
                    if (parameterValue != null) {
                        ((WorkItemImpl) workItem).setParameter(association.getTarget(), parameterValue);
                    }
                }
            } else if (association.getAssignments() == null || association.getAssignments().isEmpty()) {
                VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, association.getTarget());
                if (variableScopeInstance != null) {
                    Object value = workItem.getResult(association.getSources().get(0));
                    if (value == null) {
                        try {
                            ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                            value = evaluator.evaluate(association.getSources().get(0), new WorkItemResolverFactory(workItem));
                        } catch (Throwable t) {
                        // do nothing
                        }
                    }
                    Variable varDef = variableScopeInstance.getVariableScope().findVariable(association.getTarget());
                    DataType dataType = varDef.getType();
                    // exclude java.lang.Object as it is considered unknown type
                    if (!dataType.getStringType().endsWith("java.lang.Object") && !dataType.getStringType().endsWith("Object") && value instanceof String) {
                        value = dataType.readValue((String) value);
                    } else {
                        variableScopeInstance.getVariableScope().validateVariable(getProcessInstance().getProcessName(), association.getTarget(), value);
                    }
                    variableScopeInstance.setVariable(this, association.getTarget(), value);
                } else {
                    String output = association.getSources().get(0);
                    String target = association.getTarget();
                    Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(target);
                    if (matcher.find()) {
                        String paramName = matcher.group(1);
                        String expression = VariableUtil.transformDotNotation(paramName, output);
                        NodeInstanceResolverFactory resolver = new NodeInstanceResolverFactory(this);
                        resolver.addExtraParameters(workItem.getResults());
                        Serializable compiled = MVEL.compileExpression(expression);
                        MVEL.executeExpression(compiled, resolver);
                        String varName = VariableUtil.nameFromDotNotation(paramName);
                        variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, varName);
                        variableScopeInstance.setVariable(this, varName, variableScopeInstance.getVariable(varName));
                    } else {
                        logger.warn("Could not find variable scope for variable {}", association.getTarget());
                        logger.warn("when trying to complete Work Item {}", workItem.getName());
                        logger.warn("Continuing without setting variable.");
                    }
                }
            } else {
                try {
                    association.getAssignments().forEach(this::handleAssignment);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            }
        }
    }
    // handle dynamic nodes
    if (getNode() == null) {
        setMetaData("NodeType", workItem.getName());
        mapDynamicOutputData(workItem.getResults());
    }
    triggerCompleted();
}