diagnostics_channel: capture console messages #56292
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I lack context on this, so I might be missing some point. Can this use the Inspector protocol instead of adding hooks directly into console object. In-process inspector API can be configured to watch for the messages? This way there will be less coupling. |
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The Inspector API is substantially more expensive. This is meant for being able to rewrite potentially all log messages in production, so it needs to be fast. |
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Thanks for the reply. |
RafaelGSS
approved these changes
Dec 17, 2024
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Maybe worth to extend test to verify adding/removing/replacing elements, Main problem I see with mutating diagnostics channels is the undefined sequence if there are more subscribers. |
Flarna
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Dec 17, 2024
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| * `args` {any\[]} | ||
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| Emitted when `console.log()` is called. Receives and array of the arguments |
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Maybe describe that this is the arguments array and therefore mutation is possible.
Flarna
approved these changes
Dec 17, 2024
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I've added diagnostics_channel support to capture and modify inputs to the main console methods. This enables some useful things like APMs injecting tracing data into log messages to correlate log messages to the requests from which they originated. You can also replace the args list entirely, so you could apply your own custom formatting to produce JSON logs instead or things like that.
cc @nodejs/diagnostics @nodejs/console