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Nanaloveyuki
78 lines
2.2 KiB
Markdown
78 lines
2.2 KiB
Markdown
---
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name: sink-config-to-json
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group: api
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category: config
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update-time: 20260512
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description: Convert SinkConfig into a JSON value for export and nested logger config serialization.
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key-word:
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- sink
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- config
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- json
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- public
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---
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## Sink-config-to-json
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Convert `SinkConfig` into a `JsonValue`. This helper is used directly for sink export and indirectly when exporting `LoggerConfig`.
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### Interface
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```moonbit
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pub fn sink_config_to_json(config : SinkConfig) -> @json_parser.JsonValue {}
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```
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#### input
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- `config : SinkConfig` - Sink config to export.
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#### output
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- `JsonValue` - JSON representation of the sink configuration.
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### Explanation
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Detailed rules explaining key parameters and behaviors
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- The output includes `kind`, `path`, `append`, `auto_flush`, and `text_formatter`.
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- `rotation` is only included when present.
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- `kind` is serialized using the stable parser-facing sink labels such as `console`, `json_console`, `text_console`, and `file`.
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- `text_formatter` export is delegated to `text_formatter_config_to_json(...)`, so nested formatter settings follow the same config schema used elsewhere.
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- The exported shape is schema-oriented and shared by larger config export helpers.
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- This helper is especially useful when building larger config payloads manually.
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### How to Use
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Here are some specific examples provided.
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#### When Need Sink-only Export
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When only the sink portion should be emitted:
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```moonbit
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let json = sink_config_to_json(SinkConfig::new(kind=SinkKind::TextConsole))
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```
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In this example, sink config can be exported independently of the full logger config.
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#### When Compose A Larger JSON Payload
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When sink config should be embedded elsewhere:
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```moonbit
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let sink_json = sink_config_to_json(config.sink)
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```
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In this example, sink config becomes a structured JSON component.
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### Error Case
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e.g.:
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- If `rotation` is absent, it is simply omitted from the exported sink config.
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- If file-related fields are unused by the sink kind, they are still exported according to the stable config shape.
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### Notes
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1. Use this helper when you need a reusable JSON value rather than a final JSON string.
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2. `logger_config_to_json(...)` reuses this helper for the nested `sink` field.
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