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Nanaloveyuki
78 lines
3.0 KiB
Markdown
78 lines
3.0 KiB
Markdown
---
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name: build-application-text-async-logger
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group: api
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category: facade
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update-time: 20260614
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description: Build the application-facing text-console async logger facade from an AsyncLoggerBuildConfig using the configured text formatter directly.
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key-word:
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- application
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- async
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- text
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- public
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---
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## Build-application-text-async-logger
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Build an `ApplicationTextAsyncLogger` from `AsyncLoggerBuildConfig`. This facade is the application-oriented async builder for the text-console runtime sink shape returned by `build_async_text_logger(...)`.
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### Interface
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```moonbit
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pub fn build_application_text_async_logger(
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config : AsyncLoggerBuildConfig,
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) -> ApplicationTextAsyncLogger {
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```
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#### input
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- `config : AsyncLoggerBuildConfig` - Combined sync logger config and async queue/runtime config.
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#### output
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- `ApplicationTextAsyncLogger` - Application-facing async logger backed by `FormattedConsoleSink`.
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### Explanation
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Detailed rules explaining key parameters and behaviors
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- This API delegates to `build_async_text_logger(...)`.
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- It is intended for config-driven async text console output where callers want the concrete text sink shape rather than the broader runtime sink enum wrapper.
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- The builder always creates a `FormattedConsoleSink` from `config.logger.sink.text_formatter` instead of selecting among sink kinds.
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- Unlike `build_application_async_logger(...)`, this facade does not go through the full synchronous configured-logger build path first.
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- It uses the selected text-oriented `LoggerConfig` fields directly and therefore does not apply `LoggerConfig.queue` or preserve sync runtime sink controls.
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- The returned logger keeps the usual async lifecycle helpers.
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- Because it returns the direct `ApplicationTextAsyncLogger` alias, the resulting logger also keeps the same runtime-dependent close/failure semantics as the underlying `AsyncLogger[@bitlogger.FormattedConsoleSink]`.
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### How to Use
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Here are some specific examples provided.
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#### When Need An App Async Builder With Text Sink Shape
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When async output should stay on text console formatting:
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```moonbit
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let logger = build_application_text_async_logger(
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AsyncLoggerBuildConfig::new(
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logger=text_console(target="app.text.async"),
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async_config=AsyncLoggerConfig::new(max_pending=4),
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),
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)
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```
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In this example, the async logger is built for text-console output specifically.
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### Error Case
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e.g.:
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- If callers need sink-kind-driven branching such as JSON console or file-backed async output, they should use `build_application_async_logger(...)` instead.
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- If runtime draining is never started, records still follow the normal async queue lifecycle rules.
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### Notes
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1. This is a narrower text-console async facade than `build_application_async_logger(...)`.
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2. It is most useful when callers want the `FormattedConsoleSink`-backed async type explicitly.
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3. Use `build_application_async_logger(...)` instead when callers need the broader runtime-sink build path, including sync queue application through `build_logger(config.logger)`.
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