Jerry Cwiklik created UIMA-5755:
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Summary: UIMA-DUCC: Pull service should echo correlation id in ACK
and END msgs
Key: UIMA-5755
URL: https://issues.apache.org/jira/browse/UIMA-5755
Project: UIMA
Issue Type: New Feature
Components: DUCC
Reporter: Jerry Cwiklik
Assignee: Jerry Cwiklik
Fix For: 2.2.3-Ducc
Pull service uses three-way protocol to communicate with its client/driver. It
sends GET, followed by ACK and END. The GET asks the client for a task (CAS),
the ACK confirms service receipt of it, and END indicates the task completion.
To complete a task, a client needs a correlation Id to locate the task in its
database. Modify the protocol handler API to allow for user code to attach the
correlation ID and include it in a reply. Perhaps the best place is the
HttpResponse header. The pull service should echo this correlation Id in
subsequent ACK and END messages. This time by attaching it to HttpRequest
header.
Modify TAS TaskConsumer class to include correlationId.
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