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lose watch when SimpleCache respond return false in respondWithSpecificOrder

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#219 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
java

Research direction

Start in io.envoyproxy.controlplane.cache.SimpleCache and trace respondWithSpecificOrder through respond(watch, snapshot, group). Check how a false return from respond is handled and how the watch lifecycle is updated. Done means an incomplete response does not discard the watch, so the client can rewatch as described.

Written by the indexing model from the issue text.

Description

For ADS mode, class io.envoyproxy.controlplane.cache.SimpleCache will respond to client when setSnapshot.

When respond(watch, snapshot, group); return false, respondWithSpecificOrder will lose the watch, since respond is not complete, client will not rewatch

`
respond(watch, snapshot, group);

      // Discard the watch. A new watch will be created for future snapshots once envoy ACKs the response.
      return true;

`

Dominant language
Java
Stars
312
Forks
150
PR merge metrics
No merged PRs in 30d

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