Stefan Egli created SLING-3316:
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Summary: Add auto-stop behavior to topology connector if pinging
self
Key: SLING-3316
URL: https://issues.apache.org/jira/browse/SLING-3316
Project: Sling
Issue Type: Improvement
Components: Extensions
Affects Versions: Discovery Impl 1.0.2
Reporter: Stefan Egli
Assignee: Stefan Egli
Although discovery.impl can handle situations where a topology connector is
pointing to itself (by correctly ignoring that connector), the connector still
continues pinging every configured heartbeat-interval. The idea behind this
being that the connector should not try to be too smart (KISS) as it could turn
out that eventually that connector no longer points to self but somewhere
useful (eg due to a change in a reverse proxy..) Nevertheless: turns out that
such a local-loop topology-connector can indeed be a hassle as it fills log
files (eg request log, recent requests etc) with unnecessary information,
besides the fact that the pings might indeed not be necessary. To improve such
a scenario, discovery.impl could stop the connector entirely when detecting
such a local-loop. (The detection is rather trivial: the response from the PUT
connector is already flagged as 'loop=true'. In that case the connector-client
can check if the response came from itself (by verifying the slingId)). Since
stopping the connector is not something you want in all situations, this
feature should be disabled by default.
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