Send Tasks && camunda-bpm-mail

HEss · April 9, 2021, 11:48am

Hello everyone,
I’m beginner to Camunda. I wanna use send tasks to send emails using camunda-bpm-mail
When I’m trying to deploy the process to the engine, I got this error “One of the attributes ‘class’, ‘delegateExpression’, ‘type’, or ‘expression’ is mandatory on sendTask”.
Any help, thank you

Niall · April 9, 2021, 11:51am

You should upload your model so that we have some context as to what could be causing the error

HEss · April 9, 2021, 12:05pm

Hello @Niall,
Thank you for your quick reply, You can find attached the process.process.bpmn (8.3 KB)
PS: each connector has its own address email

aravindhrs · April 9, 2021, 12:19pm

@HEss refer this post for similar issue was discussed and resolved.

Also, make sure that you’ve the below plugin in pom.xml:

<dependency>
  <groupId>org.camunda.bpm</groupId>
  <artifactId>camunda-engine-plugin-connect</artifactId>
</dependency>

This plugin contains the piece of code to parse the connector extension of the bpmn file.

HEss · April 9, 2021, 12:38pm

Thank you @aravindhrs for your reply, actually I’ve already checked your post, and I want to ask you something

Is this example implemented by Spring boot or just a Maven project.
Have you attached this configuration class to implementation details of each sendTask.

aravindhrs · April 9, 2021, 4:25pm

Yes, it’s spring boot application.

Not required to attach at each send task level. The plugin takes care of it while parsing the activity.

github.com

camunda/camunda-bpm-platform/blob/7c5bf37307d3eeac3aee5724b6e4669a9992eaba/engine-plugins/connect-plugin/src/main/java/org/camunda/connect/plugin/impl/ConnectorParseListener.java#L39


      
          public class ConnectorParseListener extends AbstractBpmnParseListener {
          
            @Override
            public void parseServiceTask(Element serviceTaskElement, ScopeImpl scope, ActivityImpl activity) {
              Element connectorDefinition = findCamundaExtensionElement(serviceTaskElement, "connector");
              if (connectorDefinition != null) {
                Element connectorIdElement = connectorDefinition.element("connectorId");
          
                String connectorId = null;
                if (connectorIdElement != null)  {
                  connectorId = connectorIdElement.getText().trim();
                }
                if (connectorIdElement == null || connectorId.isEmpty()) {
                  throw new BpmnParseException("No 'id' defined for connector.", connectorDefinition);
                }
          
                IoMapping ioMapping = parseInputOutput(connectorDefinition);
                activity.setActivityBehavior(new ServiceTaskConnectorActivityBehavior(connectorId, ioMapping));
              }
            }

github.com

camunda/camunda-bpm-platform/blob/master/engine-plugins/connect-plugin/src/main/java/org/camunda/connect/plugin/impl/ServiceTaskConnectorActivityBehavior.java#L92-L103


      
          protected void ensureConnectorInitialized() {
            if(connectorInstance == null) {
              synchronized (this) {
                if(connectorInstance == null) {
                  connectorInstance = Connectors.getConnector(connectorId);
                  if (connectorInstance == null) {
                    throw new ConnectorException("No connector found for connector id '" + connectorId + "'");
                  }
                }
              }
            }
          }