Andsel/verify oom behavior of parser in isolation#477

Draft

andsel wants to merge 16 commits intologstash-plugins:mainfrom

andsel:andsel/verify_oom_behavior_of_parser_in_isolation

Commits on Jul 5, 2023

Avoid to run Beats parser and Beats protocol handler in separate executors group (beatsHandlerExecutorGroup)
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Ported core part of original #410 PR
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Commits on Jul 7, 2023

Added pull way of fetching data
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Commits on Jul 12, 2023

Extracted the pull mode part into a separate handler
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Update the flow control handler to avoid new reads if the channel becomes not writable, to excert backpressure to the sender system
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Separated the logic to drop incoming connections into specific handler
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Commits on Jul 20, 2023

Pessimistic remediation, when a direct OOM happens close the channel
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Commits on Jul 28, 2023

Commits on Aug 25, 2023

Experiment code to run BeatsParser in isolation
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Commits on Sep 11, 2023

Added TLS listening
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