mirror of
https://github.com/Nanaloveyuki/BitLogger.git
synced 2026-05-30 15:42:25 +00:00
Nanaloveyuki
86 lines
2.5 KiB
Markdown
86 lines
2.5 KiB
Markdown
---
|
|
name: build-logger
|
|
group: api
|
|
category: config
|
|
update-time: 20260512
|
|
description: Build a configured runtime logger from a LoggerConfig while preserving queue and file control helpers.
|
|
key-word:
|
|
- logger
|
|
- config
|
|
- runtime
|
|
- public
|
|
---
|
|
|
|
## Build-logger
|
|
|
|
Build a `ConfiguredLogger` from `LoggerConfig`. This is the main config-to-runtime bridge for synchronous logging and is the builder used before async wrapping in config-driven async flows.
|
|
|
|
### Interface
|
|
|
|
```moonbit
|
|
pub fn build_logger(config : LoggerConfig) -> ConfiguredLogger {}
|
|
```
|
|
|
|
#### input
|
|
|
|
- `config : LoggerConfig` - Fully assembled logger config including level, target, timestamp, sink, and optional queue wrapper.
|
|
|
|
#### output
|
|
|
|
- `ConfiguredLogger` - A runtime logger backed by `RuntimeSink`, with queue and file control helpers preserved.
|
|
|
|
### Explanation
|
|
|
|
Detailed rules explaining key parameters and behaviors
|
|
|
|
- `build_logger(...)` constructs the runtime sink shape based on `SinkConfig` and optional queue wrapper.
|
|
- The returned logger still supports normal logging methods because `ConfiguredLogger` is `Logger[RuntimeSink]`.
|
|
- Queue metrics and file controls remain available through forwarding helpers on the configured logger.
|
|
- This API is deterministic and data-driven, making it suitable for bootstrapping from parsed config.
|
|
|
|
### How to Use
|
|
|
|
Here are some specific examples provided.
|
|
|
|
#### When Need Structured Config-first Bootstrapping
|
|
|
|
When config is already assembled as typed values:
|
|
```moonbit
|
|
let logger = build_logger(
|
|
LoggerConfig::new(
|
|
min_level=Level::Info,
|
|
target="svc",
|
|
sink=SinkConfig::new(kind=SinkKind::TextConsole),
|
|
),
|
|
)
|
|
```
|
|
|
|
In this example, no JSON parsing is required because config objects were built directly.
|
|
|
|
And the runtime logger is ready immediately.
|
|
|
|
#### When Need Config-built Queue Or File Runtime Helpers
|
|
|
|
When the sink shape comes from config but runtime controls still matter:
|
|
```moonbit
|
|
let logger = build_logger(config)
|
|
ignore(logger.pending_count())
|
|
ignore(logger.file_runtime_state())
|
|
```
|
|
|
|
In this example, config-driven construction does not remove observability or control helpers.
|
|
|
|
### Error Case
|
|
|
|
e.g.:
|
|
- If config contains a file sink on a non-native backend, callers must still respect backend capability behavior.
|
|
|
|
- If queue is not configured, queue-related counters simply reflect the non-queued runtime shape.
|
|
|
|
### Notes
|
|
|
|
1. Use this API when config is already typed as `LoggerConfig`.
|
|
|
|
2. Use `parse_and_build_logger(...)` when the starting point is raw JSON text.
|
|
|