Create way to add key-value pairs to new sinks#4582
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mcastorina
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Dec 5, 2025
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Looks good! Feels kind of kludgey but it works.
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| // New key-value pairs cannot be ergonomically added directly to cores. logr has code to do it, but that code is not | ||
| // exported. Rather than replicating it ourselves, we indirectly use it by creating a temporary logger for the new | ||
| // core, adding the key-value pairs to the temporary logger, and then extracting the temporary logger's modified | ||
| // core. |
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Is the "non-ergonomic way" you're referring to the Core.With method?
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Description:
Counterintuitively, a new sink added to an existing logger will not inherit the existing logger's key-value pairs. This has only caused a problem in practice with respect to a small number of known key-value pairs, so this PR creates a way to add specific key-value pairs to new sinks.
This will supersede #4579.
Checklist:
make test-community)?make lintthis requires golangci-lint)?