How to use

lookupWorkflowDefinition

method

in

com.netflix.conductor.core.metadata.MetadataMapperService

public WorkflowDef lookupForWorkflowDefinition(String name, Integer version) {
  Optional<WorkflowDef> potentialDef =
      version == null ? lookupLatestWorkflowDefinition(name) : lookupWorkflowDefinition(name, version);
  //Check if the workflow definition is valid
  WorkflowDef workflowDefinition = potentialDef
      .orElseThrow(() -> {
            logger.error("There is no workflow defined with name {} and version {}", name, version);
            return new ApplicationException(
                ApplicationException.Code.NOT_FOUND,
                String.format("No such workflow defined. name=%s, version=%s", name, version)
            );
          }
      );
  return workflowDefinition;
}

@Test(expected = IllegalArgumentException.class)
public void testLookupWorkflowDefinition() {
  try{
    String workflowName = "test";
    when(metadataDAO.get(workflowName, 0)).thenReturn(Optional.of(new WorkflowDef()));
    Optional<WorkflowDef> optionalWorkflowDef = metadataMapperService.lookupWorkflowDefinition(workflowName, 0);
    assertTrue(optionalWorkflowDef.isPresent());
    metadataMapperService.lookupWorkflowDefinition(null, 0);
  } catch (ConstraintViolationException ex){
    Assert.assertEquals(1, ex.getConstraintViolations().size());
    Set<String> messages = getConstraintViolationMessages(ex.getConstraintViolations());
    assertTrue(messages.contains("WorkflowIds list cannot be null."));
  }
}

public WorkflowDef lookupForWorkflowDefinition(String name, Integer version) {
  Optional<WorkflowDef> potentialDef =
      version == null ? lookupLatestWorkflowDefinition(name) : lookupWorkflowDefinition(name, version);
  //Check if the workflow definition is valid
  WorkflowDef workflowDefinition = potentialDef
      .orElseThrow(() -> {
            logger.error("There is no workflow defined with name {} and version {}", name, version);
            return new ApplicationException(
                ApplicationException.Code.NOT_FOUND,
                String.format("No such workflow defined. name=%s, version=%s", name, version)
            );
          }
      );
  return workflowDefinition;
}