Use case diagram System   Provides   Use   Cases   For

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Use Case Diagram System   provides   use   cases   for   two   roles:  'Authorized   User'  may   initiate  'DistributeJob'  for  chosen job over chosen jobDistributionChannels. This use case detailed in 'Sequence Diagram' below.  Also, 'Authorized User' may query for list of jobDistributionTracks. Another role – 'Anonymous User'  may apply for job – jobApplicationTrack created to track this.

Class Diagram Class   diagram   shows   domains   introduced   to   system   (JobDistributionChannel,  JobDistributionTrack  and  JobApplicationTrack)   and   their   relation   to   existing   domains.  JobDistributionTrack  created   with  state=init  and   then   updated   to  state=done  upon   completion   of  distribution task.

Sequence Diagram Sequence   Diagram   for  'DistributeJob'  use   case.   First   part   of  distributeJobService  method  distributeJob  executes synchronously. It saves  jobDistributionTrack  for each  jobDistributionChannel  requested to distribute over. Next part – executes asynchronously. It runs actual distrbution task calling  jobDistributionPlugin appropriate to jobDistributionChannel type.

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