Rest API Signal execution with variables

[ybrukau]

Hello,

It looks like there is no analog of

RuntimeService.signal(String executionId, Map<String,Object> processVariables)‍

provided by Rest API.
I checked the source code and there is next implementation of

ExecutionResource.performExecutionAction‍

(line 48)

    if(ExecutionActionRequest.ACTION_SIGNAL.equals(actionRequest.getAction())) {
      ActivitiUtil.getRuntimeService().signal(execution.getId());
    } else if 
…
‍‍‍‍‍‍

So there is no check if variables presented or no.
It is an easy fix. Should I create a jira about it and if yes than where? I could submit patch for the issue if needed.

Thanks a lot,
Yury

[ybrukau]

One more thing. In the meantime I am trying to use old rest API and to do POST to <i>process-instance/${processInstanceId}/signal</i> with request body like this:
<java>
{
  "activityId":"receivetask1",
  "variable1":"value",
  "variable2":"value"
}
</java>

And the response is <blockcode>{"errorMessage":"Forbidden","statusCode":403}</blockcode>
And even GET to <i>process-instance/${processInstanceId}</i> returns the same. But GET to <i>process-instance/${processInstanceId}/diagram</i> returns expected diagram.

Do you have any idea for this behavior? Do any of old API not available any more?

Any help appreciated,
Yury

[frederikherema1]

Thanks for pointing that out. Indeed, the variables are only used in the signalEventReceived, not the plain old signal. Current workaround is to either use the OLD API or do 2 rest-calls: first set variables and signal in the second call, although this is not an"atomic" operation anymore. I've fixed this on master.

About your second question:


protected Status getAuthenticationFailureStatus() {
    return Status.CLIENT_ERROR_FORBIDDEN;
  }

It seems that you're request does not contain valid login-credentials authenticated… What client are you using? The diagram is returned because this requires NO authentication (to be able to embed in HTML, where an img cannot do BASIC authentication).