Define data ownership for LogRecordProcessor#2969
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reyang merged 6 commits intoopen-telemetry:mainfrom Dec 2, 2022
Merged
Define data ownership for LogRecordProcessor#2969reyang merged 6 commits intoopen-telemetry:mainfrom
reyang merged 6 commits intoopen-telemetry:mainfrom
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reyang
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Nov 21, 2022
reyang
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Nov 21, 2022
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We haven't concluded the discussion last time. What are we aiming for here? Chained processors? |
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The approach with this PR is to try to resolve the mutability question while maintaining a LogRecordProcessor design as similar as possible to SpanProcessors: LogRecordProcessors are called by the SDK LoggerProvider in the order they were provided. There is no responsibility for a processor to call the next processor (i.e. no chaining). It's not the only approach, but should be a frontrunner in my opinion since its simple to implement, consistent with tracing, and is quite flexible. |
tigrannajaryan
approved these changes
Dec 1, 2022
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@open-telemetry/specs-logs-approvers please take a look. |
reyang
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Dec 2, 2022
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Resolves #2955.
States that
LogRecordProcessor#onEmitcan modifylogRecorduntil it returns. If a reference tologRecordis held afteronEmitreturns, only reads are permitted.If a processor wants to do asynchronous modification it needs to first make a copy is responsible for calling any downstream processors / exporters that expect to see the changes. Described more here.