Music Manager Docs
Project Documentation / Job Routing

Job Routing

Any info Retrieval request sended to Jobs manager is routed by Job Router.

Job routig depends on Job’s LastOrigin property which contains the name of the last services that proccessed the job.

For each job received by Job Router, this service routes it depending of LastOrigin and Finished properties. LastOrigin will have the following values for the time being:

  • JobManager
  • MetalArchivesWrapper
  • MusicBrainzWrapper

The value of LastOrigin is changed by the service who process it.

When jobs finish their status is sended to Status Manager, only if status is successful retrieved data is sended to Storage Manager.

Job Routing behaviour:

graph TD;
Job_Manager -- Send new job --> Job_Router[Job Router];
Job_Router -- Route job --> Metal_Archives_Wrapper[Metal archives wrapper];
Metal_Archives_Wrapper -- Returns retrieved info or failed state--> Job_Router;
Job_Router -- Not found at metal archives - Look for info --> Music_Brainz_Wrapper[Music Brainz wrapper];
Music_Brainz_Wrapper -- Returns retrieved info or failed state--> Job_Router;
Job_Router -- Store result --> Storage_Manager[Storage Manager];
Job_Router -- Update status --> Status_Manager[Status Manager];

If RequiredOrigin has a value, Job Router will send the job only to required Origin and it won’t be re-routed.

Finnaly, Job Router will send final to Status Manager and required information data to Storage Manager if exists.