[jira] [Created] (CHUKWA-737) Add heartbeat adaptor to push chukwa agent status to remote http server

["shreyas subramanya (JIRA)" <ji...@apache.org>]

shreyas subramanya created CHUKWA-737:
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             Summary: Add heartbeat adaptor to push chukwa agent status to remote http server 
                 Key: CHUKWA-737
                 URL: https://issues.apache.org/jira/browse/CHUKWA-737
             Project: Chukwa
          Issue Type: Improvement
          Components: Data Collection
    Affects Versions: 0.7.0
            Reporter: shreyas subramanya
            Assignee: shreyas subramanya


Provide a generic HeartbeatAdaptor which can periodically send status reports to a remote http server. The adaptor can be configured with arbitrary number of component status checkers and it will send out a single status report with all components.

Example - to send out the status of chukwa agent as well as a rest interface (in this case chukwa agent rest), we add the following adaptor:
add HeartbeatAdaptor DefaultProcessor (ChukwaStatusChecker,HttpStatusChecker Chukwa.rest.server http://localhost:9090/rest/v1/adaptor) 3 0

This will send out status reports such as -
{"time":1424213621629,"components":[{"host":"host.example.com","component":"Chukwa.Agent","adaptor.count":1},"status":"running","component":"Chukwa.rest.server","uri":"http:\/\/localhost:9090\/rest\/v1"}]}

Additional configuration needed in chukwa-agent-conf.xml
chukwa.http.writer.host
chukwa.http.writer.port
if PipelineConnector is used, add org.apache.hadoop.chukwa.datacollection.writer.HttpWriter to head of pipeline



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