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✨ Add file sink rotation and retention

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Nanaloveyuki
2026-05-09 21:24:02 +08:00
parent 18479a8b6f
commit fa2a165942
11 changed files with 299 additions and 16 deletions
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docs/README-en.md
+7 -3
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@@ -24,7 +24,7 @@ BitLogger currently provides:
- bounded backlog with `QueueOverflowPolicy::DropNewest` and `QueueOverflowPolicy::DropOldest`
- configurable text formatting via `text_formatter(...)`, `format_text(...)`, `text_console_sink(...)`, and template-driven `template` output
- formatter-based callback integration via `formatted_callback_sink(...)`
- native-only file output via `file_sink(...)`
- native-only file output via `file_sink(...)`, with basic size rotation and backup retention
- `native_files_supported()` for backend capability detection
- default global logger helpers
@@ -151,7 +151,10 @@ Native file sink:
```moonbit
if native_files_supported() {
let logger = Logger::new(file_sink("bitlogger.log"), target="file")
let logger = Logger::new(
file_sink("bitlogger.log", rotation=Some(file_rotation(128, max_backups=2))),
target="file",
)
logger.info("hello", fields=[field("kind", "file")])
ignore(logger.sink.flush())
ignore(logger.sink.close())
@@ -171,7 +174,8 @@ if native_files_supported() {
## Config Notes
- BitLogger now includes a JSON config layer via `parse_logger_config_text(...)`, `stringify_logger_config(...)`, and `build_logger(...)`.
- Supported keys include `min_level`, `target`, `timestamp`, `sink.kind`, `sink.path`, `sink.append`, `sink.auto_flush`, `sink.text_formatter`, and `queue`.
- Supported keys include `min_level`, `target`, `timestamp`, `sink.kind`, `sink.path`, `sink.append`, `sink.auto_flush`, `sink.rotation`, `sink.text_formatter`, and `queue`.
- `sink.rotation` currently supports `max_bytes` and `max_backups` for basic size-based rotation and backup retention.
- `sink.text_formatter.template` currently supports fixed tokens: `{timestamp}`, `{timestamp_ms}`, `{level}`, `{target}`, `{message}`, and `{fields}`.
- Config-driven sink assembly currently supports `console`, `json_console`, `text_console`, and `file`.
- `queue` remains a synchronous bounded wrapper around the final sink, not an async runtime.