[services] Tunnelbroker - Disabling checking of the persisted messages on stream connect
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Authored by • max on Feb 6 2023, 2:59 AM.

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• jon
bartek

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rCOMM343be0ba9181: [services] Tunnelbroker - Disabling checking of the persisted messages on…

Summary

This diff introduces changes to the Tunnelbroker gRPC messages stream implementation according to the ENG-2641 task, where we need to disable messages persistence in the DynamoDB database using the config file parameter from D6622.
In this diff, we are disabling the check for new messages in the database when the client connects to the stream if the config flag (D6622) is presented.

Linear task: ENG-2641

Test Plan

CI gates are passed.
Manual testing: The client connects to the gRPC messages stream when messages exist for a certain deviceID in the DynamoDB database. When the messages.skip_persistence config flag has presented the messages from the database will not be delivered to the stream, because we are skipping looks into the database for them.

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disable-check-saved-messages-onconnect

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Event Timeline

• max created this revision.Feb 6 2023, 2:59 AM

• max held this revision as a draft.

Herald added a reviewer: • jon. · View Herald TranscriptFeb 6 2023, 2:59 AM

Herald added subscribers: atul, tomek, ashoat. · View Herald Transcript

• max added a parent revision: D6622: [services] Tunnelbroker - Disable messages persistence config parameter.Feb 6 2023, 2:59 AM

• max added a child revision: D6624: [services] Tunnelbroker - Disabling messages persistence on messages send.Feb 6 2023, 3:12 AM

Harbormaster completed remote builds in B16169: Diff 22119.Feb 6 2023, 3:24 AM

• max edited the summary of this revision. (Show Details)Feb 6 2023, 5:23 AM

• max edited the test plan for this revision. (Show Details)

• max added a reviewer: bartek.

• max published this revision for review.Feb 6 2023, 5:45 AM

• jon added inline comments.Feb 7 2023, 9:01 AM

services/tunnelbroker/src/server/mod.rs
213	Is there any way to reference `ConfigManager::OPTION_MESSAGES_SKIP_PERSISTENCE` ? would like to avoid stringly typed items.

bartek added inline comments.Feb 20 2023, 4:22 AM

services/tunnelbroker/src/server/mod.rs
213	this could possibly be done with the `CxxString` type, but it would probably be less performant

Most of my concerns will be a non-issue if we every write the cli parsing in rust.

This revision is now accepted and ready to land.Feb 20 2023, 12:20 PM

• max marked 2 inline comments as done.Feb 23 2023, 4:28 AM

• max added inline comments.

services/tunnelbroker/src/server/mod.rs
213	Is there any way to reference ConfigManager::OPTION_MESSAGES_SKIP_PERSISTENCE ? would like to avoid stringly typed items. We can only pass it from the legacy C++ codebase using the CXX bridge, but this seems like less performant and more code to support the solution especially since we will rewrite all C++ to Rust in the future. this could possibly be done with the `CxxString` type, but it would probably be less performant Absolutely correct!