public void beginTask(
@Param(ScoreLangConstants.TASK_INPUTS_KEY) List<Input> taskInputs,
@Param(ScoreLangConstants.LOOP_KEY) LoopStatement loop,
@Param(ScoreLangConstants.RUN_ENV) RunEnvironment runEnv,
@Param(EXECUTION_RUNTIME_SERVICES) ExecutionRuntimeServices executionRuntimeServices,
@Param(ScoreLangConstants.NODE_NAME_KEY) String nodeName,
@Param(ExecutionParametersConsts.RUNNING_EXECUTION_PLAN_ID) Long RUNNING_EXECUTION_PLAN_ID,
@Param(ScoreLangConstants.NEXT_STEP_ID_KEY) Long nextStepId,
@Param(ScoreLangConstants.REF_ID) String refId) {
try {
runEnv.removeCallArguments();
runEnv.removeReturnValues();
Context flowContext = runEnv.getStack().popContext();
// loops
if (loopStatementExist(loop)) {
LoopCondition loopCondition =
loopsBinding.getOrCreateLoopCondition(loop, flowContext, nodeName);
if (!loopCondition.hasMore()) {
runEnv.putNextStepPosition(nextStepId);
runEnv.getStack().pushContext(flowContext);
return;
}
if (loopCondition instanceof ForLoopCondition) {
ForLoopCondition forLoopCondition = (ForLoopCondition) loopCondition;
if (loop instanceof ListForLoopStatement) {
// normal iteration
String varName = ((ListForLoopStatement) loop).getVarName();
loopsBinding.incrementListForLoop(varName, flowContext, forLoopCondition);
} else {
// map iteration
MapForLoopStatement mapForLoopStatement = (MapForLoopStatement) loop;
String keyName = mapForLoopStatement.getKeyName();
String valueName = mapForLoopStatement.getValueName();
loopsBinding.incrementMapForLoop(keyName, valueName, flowContext, forLoopCondition);
}
}
}
Map<String, Serializable> flowVariables = flowContext.getImmutableViewOfVariables();
sendStartBindingInputsEvent(
taskInputs,
runEnv,
executionRuntimeServices,
"Pre Input binding for task",
LanguageEventData.StepType.TASK,
nodeName);
Map<String, Serializable> operationArguments =
inputsBinding.bindInputs(taskInputs, flowVariables, runEnv.getSystemProperties());
// todo: hook
sendEndBindingInputsEvent(
taskInputs,
operationArguments,
runEnv,
executionRuntimeServices,
"Task inputs resolved",
LanguageEventData.StepType.TASK,
nodeName);
updateCallArgumentsAndPushContextToStack(runEnv, flowContext, operationArguments);
// request the score engine to switch to the execution plan of the given ref
requestSwitchToRefExecutableExecutionPlan(
runEnv, executionRuntimeServices, RUNNING_EXECUTION_PLAN_ID, refId, nextStepId);
// set the start step of the given ref as the next step to execute (in the new running
// execution plan that will be set)
runEnv.putNextStepPosition(executionRuntimeServices.getSubFlowBeginStep(refId));
} catch (RuntimeException e) {
logger.error(
"There was an error running the begin task execution step of: \'"
+ nodeName
+ "\'. Error is: "
+ e.getMessage());
throw new RuntimeException("Error running: " + nodeName + ": " + e.getMessage(), e);
}
}
public void endTask(
@Param(ScoreLangConstants.RUN_ENV) RunEnvironment runEnv,
@Param(ScoreLangConstants.TASK_PUBLISH_KEY) List<Output> taskPublishValues,
@Param(ScoreLangConstants.TASK_NAVIGATION_KEY)
Map<String, ResultNavigation> taskNavigationValues,
@Param(EXECUTION_RUNTIME_SERVICES) ExecutionRuntimeServices executionRuntimeServices,
@Param(ScoreLangConstants.PREVIOUS_STEP_ID_KEY) Long previousStepId,
@Param(ScoreLangConstants.BREAK_LOOP_KEY) List<String> breakOn,
@Param(ScoreLangConstants.NODE_NAME_KEY) String nodeName,
@Param(ScoreLangConstants.ASYNC_LOOP_KEY) boolean async_loop) {
try {
Context flowContext = runEnv.getStack().popContext();
Map<String, Serializable> flowVariables = flowContext.getImmutableViewOfVariables();
ReturnValues executableReturnValues = runEnv.removeReturnValues();
fireEvent(
executionRuntimeServices,
runEnv,
ScoreLangConstants.EVENT_OUTPUT_START,
"Output binding started",
LanguageEventData.StepType.TASK,
nodeName,
Pair.of(ScoreLangConstants.TASK_PUBLISH_KEY, (Serializable) taskPublishValues),
Pair.of(ScoreLangConstants.TASK_NAVIGATION_KEY, (Serializable) taskNavigationValues),
Pair.of("operationReturnValues", executableReturnValues));
Map<String, Serializable> publishValues =
outputsBinding.bindOutputs(
flowVariables, executableReturnValues.getOutputs(), taskPublishValues);
flowContext.putVariables(publishValues);
// loops
Map<String, Serializable> langVariables = flowContext.getLangVariables();
if (langVariables.containsKey(LoopCondition.LOOP_CONDITION_KEY)) {
LoopCondition loopCondition =
(LoopCondition) langVariables.get(LoopCondition.LOOP_CONDITION_KEY);
if (!shouldBreakLoop(breakOn, executableReturnValues) && loopCondition.hasMore()) {
runEnv.putNextStepPosition(previousStepId);
runEnv.getStack().pushContext(flowContext);
throwEventOutputEnd(
runEnv,
executionRuntimeServices,
nodeName,
(Serializable) publishValues,
previousStepId,
new ReturnValues(publishValues, executableReturnValues.getResult()));
runEnv.getExecutionPath().forward();
return;
} else {
flowContext.getLangVariables().remove(LoopCondition.LOOP_CONDITION_KEY);
}
}
// todo: hook
// if this is an end task method from a branch then next step position should ne null (end the
// flow)
// and result should be the one from the executable (navigation is handled in join branches
// step)
Long nextPosition = null;
String executableResult = executableReturnValues.getResult();
String presetResult = executableResult;
if (!async_loop) {
// set the position of the next step - for the use of the navigation
// find in the navigation values the correct next step position, according to the operation
// result, and set it
ResultNavigation navigation = taskNavigationValues.get(executableResult);
if (navigation == null) {
// should always have the executable response mapped to a navigation by the task, if not,
// it is an error
throw new RuntimeException(
"Task: "
+ nodeName
+ " has no matching navigation for the executable result: "
+ executableReturnValues.getResult());
}
nextPosition = navigation.getNextStepId();
presetResult = navigation.getPresetResult();
}
runEnv.putNextStepPosition(nextPosition);
HashMap<String, Serializable> outputs = new HashMap<>(flowVariables);
ReturnValues returnValues =
new ReturnValues(outputs, presetResult != null ? presetResult : executableResult);
runEnv.putReturnValues(returnValues);
throwEventOutputEnd(
runEnv,
executionRuntimeServices,
nodeName,
(Serializable) publishValues,
nextPosition,
returnValues);
runEnv.getStack().pushContext(flowContext);
runEnv.getExecutionPath().forward();
} catch (RuntimeException e) {
logger.error(
"There was an error running the end task execution step of: \'"
+ nodeName
+ "\'. Error is: "
+ e.getMessage());
throw new RuntimeException("Error running: \'" + nodeName + "\': " + e.getMessage(), e);
}
}