mirror of
https://github.com/Nanaloveyuki/BitLogger.git
synced 2026-05-30 15:42:25 +00:00
Nanaloveyuki
78 lines
2.0 KiB
Markdown
78 lines
2.0 KiB
Markdown
---
|
|
name: async-logger-is-closed
|
|
group: api
|
|
category: async
|
|
update-time: 20260512
|
|
description: Read whether the async logger has been closed and should no longer accept normal new queue traffic.
|
|
key-word:
|
|
- async
|
|
- logger
|
|
- lifecycle
|
|
- public
|
|
---
|
|
|
|
## Async-logger-is-closed
|
|
|
|
Read whether the async logger has been closed. This helper is useful for lifecycle checks around shutdown and queue finalization.
|
|
|
|
### Interface
|
|
|
|
```moonbit
|
|
pub fn[S] AsyncLogger::is_closed(self : AsyncLogger[S]) -> Bool {}
|
|
```
|
|
|
|
#### input
|
|
|
|
- `self : AsyncLogger[S]` - Async logger whose closure state should be inspected.
|
|
|
|
#### output
|
|
|
|
- `Bool` - Whether the logger has already been closed.
|
|
|
|
### Explanation
|
|
|
|
Detailed rules explaining key parameters and behaviors
|
|
|
|
- `close(...)` sets the closed state immediately.
|
|
- `shutdown(...)` also results in a closed logger by the end of its lifecycle flow.
|
|
- A closed logger should no longer be treated as a normal active enqueue target.
|
|
- This helper reflects lifecycle state only and does not indicate whether the worker is still draining.
|
|
|
|
### How to Use
|
|
|
|
Here are some specific examples provided.
|
|
|
|
#### When Guard Late-stage Logging
|
|
|
|
When code should avoid treating a logger as fully active during teardown:
|
|
```moonbit
|
|
if logger.is_closed() {
|
|
println("logger already closed")
|
|
}
|
|
```
|
|
|
|
In this example, teardown logic can branch on the closure state.
|
|
|
|
#### When Verify Shutdown Progress
|
|
|
|
When tests or diagnostics want to inspect lifecycle state:
|
|
```moonbit
|
|
logger.close()
|
|
ignore(logger.is_closed())
|
|
```
|
|
|
|
In this example, the helper confirms that close state was entered.
|
|
|
|
### Error Case
|
|
|
|
e.g.:
|
|
- If `is_closed()` returns `true`, pending records may still exist until drain or clear behavior completes.
|
|
|
|
- If callers need to know whether the worker is still active, they should also inspect `is_running()`.
|
|
|
|
### Notes
|
|
|
|
1. Closed state and running state are related but not identical.
|
|
|
|
2. Use this helper when lifecycle control matters more than queue counters.
|