How to use

populateWorkflowAndTaskData

method

in

com.netflix.conductor.core.execution.DeciderService

/**
 * Updates the workflow output.
 *
 * @param workflow the workflow instance
 * @param task     if not null, the output of this task will be copied to workflow output if no output parameters are specified in the workflow defintion
 *                 if null, the output of the last task in the workflow will be copied to workflow output of no output parameters are specified in the workflow definition
 */
void updateWorkflowOutput(final Workflow workflow, @Nullable Task task) {
  List<Task> allTasks = workflow.getTasks();
  if (allTasks.isEmpty()) {
    return;
  }
  Task last = Optional.ofNullable(task).orElse(allTasks.get(allTasks.size() - 1));
  WorkflowDef workflowDef = workflow.getWorkflowDefinition();
  Map<String, Object> output;
  if (workflowDef.getOutputParameters() != null && !workflowDef.getOutputParameters().isEmpty()) {
    Workflow workflowInstance = populateWorkflowAndTaskData(workflow);
    output = parametersUtils.getTaskInput(workflowDef.getOutputParameters(), workflowInstance, null, null);
  } else if (StringUtils.isNotBlank(last.getExternalOutputPayloadStoragePath())) {
    output = externalPayloadStorageUtils.downloadPayload(last.getExternalOutputPayloadStoragePath());
    Monitors.recordExternalPayloadStorageUsage(last.getTaskDefName(), ExternalPayloadStorage.Operation.READ.toString(), ExternalPayloadStorage.PayloadType.TASK_OUTPUT.toString());
  } else {
    output = last.getOutputData();
  }
  workflow.setOutput(output);
  externalPayloadStorageUtils.verifyAndUpload(workflow, ExternalPayloadStorage.PayloadType.WORKFLOW_OUTPUT);
}

public List<Task> getTasksToBeScheduled(Workflow workflow,
                    WorkflowTask taskToSchedule, int retryCount, String retriedTaskId) {
  workflow = populateWorkflowAndTaskData(workflow);
  Map<String, Object> input = parametersUtils.getTaskInput(taskToSchedule.getInputParameters(),
      workflow, null, null);

workflow.setExternalInputPayloadStoragePath(workflowInputPath);
workflow.getTasks().add(task);
Workflow workflowInstance = deciderService.populateWorkflowAndTaskData(workflow);
assertNotNull(workflowInstance);
assertTrue(workflow.getInput().isEmpty());

Workflow workflowInstance = populateWorkflowAndTaskData(workflow);
Map<String, Object> taskInput = parametersUtils.getTaskInputV2(workflowTask.getInputParameters(), workflowInstance, rescheduled.getTaskId(), taskDefinition);
rescheduled.getInputData().putAll(taskInput);

/**
 * Updates the workflow output.
 *
 * @param workflow the workflow instance
 * @param task     if not null, the output of this task will be copied to workflow output if no output parameters are specified in the workflow defintion
 *                 if null, the output of the last task in the workflow will be copied to workflow output of no output parameters are specified in the workflow definition
 */
void updateWorkflowOutput(final Workflow workflow, @Nullable Task task) {
  List<Task> allTasks = workflow.getTasks();
  if (allTasks.isEmpty()) {
    return;
  }
  Task last = Optional.ofNullable(task).orElse(allTasks.get(allTasks.size() - 1));
  WorkflowDef workflowDef = workflow.getWorkflowDefinition();
  Map<String, Object> output;
  if (workflowDef.getOutputParameters() != null && !workflowDef.getOutputParameters().isEmpty()) {
    Workflow workflowInstance = populateWorkflowAndTaskData(workflow);
    output = parametersUtils.getTaskInput(workflowDef.getOutputParameters(), workflowInstance, null, null);
  } else if (StringUtils.isNotBlank(last.getExternalOutputPayloadStoragePath())) {
    output = externalPayloadStorageUtils.downloadPayload(last.getExternalOutputPayloadStoragePath());
    Monitors.recordExternalPayloadStorageUsage(last.getTaskDefName(), ExternalPayloadStorage.Operation.READ.toString(), ExternalPayloadStorage.PayloadType.TASK_OUTPUT.toString());
  } else {
    output = last.getOutputData();
  }
  workflow.setOutput(output);
  externalPayloadStorageUtils.verifyAndUpload(workflow, ExternalPayloadStorage.PayloadType.WORKFLOW_OUTPUT);
}

public List<Task> getTasksToBeScheduled(Workflow workflow,
                    WorkflowTask taskToSchedule, int retryCount, String retriedTaskId) {
  workflow = populateWorkflowAndTaskData(workflow);
  Map<String, Object> input = parametersUtils.getTaskInput(taskToSchedule.getInputParameters(),
      workflow, null, null);

Workflow workflowInstance = populateWorkflowAndTaskData(workflow);
Map<String, Object> taskInput = parametersUtils.getTaskInputV2(workflowTask.getInputParameters(), workflowInstance, rescheduled.getTaskId(), taskDefinition);
rescheduled.getInputData().putAll(taskInput);