mirror of
https://github.com/Nanaloveyuki/BitLogger.git
synced 2026-07-24 00:42:18 +00:00
Nanaloveyuki
79 lines
2.4 KiB
Markdown
79 lines
2.4 KiB
Markdown
---
|
|
name: configured-logger-file-set-auto-flush
|
|
group: api
|
|
category: runtime
|
|
update-time: 20260707
|
|
description: Update the auto-flush policy used by the configured runtime file sink.
|
|
key-word:
|
|
- logger
|
|
- runtime
|
|
- file
|
|
- public
|
|
---
|
|
|
|
## Configured-logger-file-set-auto-flush
|
|
|
|
Update the auto-flush policy used by a `ConfiguredLogger` file sink. This helper changes runtime durability behavior without rebuilding the logger.
|
|
|
|
### Interface
|
|
|
|
```moonbit
|
|
pub fn ConfiguredLogger::file_set_auto_flush(self : ConfiguredLogger, enabled : Bool) -> Bool {}
|
|
```
|
|
|
|
#### input
|
|
|
|
- `self : ConfiguredLogger` - Config-driven runtime logger whose auto-flush policy should change.
|
|
- `enabled : Bool` - New auto-flush setting.
|
|
|
|
#### output
|
|
|
|
- `Bool` - Whether the policy update was applied.
|
|
|
|
### Explanation
|
|
|
|
Detailed rules explaining key parameters and behaviors
|
|
|
|
- File-backed sinks update their runtime auto-flush policy through the wrapped `RuntimeSink`.
|
|
- Queued file sinks forward the update to the wrapped inner file sink only when no queued records are pending.
|
|
- Non-file sinks return `false`.
|
|
- This helper changes policy only; it does not itself flush pending data.
|
|
- If a queued file sink still has pending records, the update is rejected and returns `false` so already queued records are not later written under a different auto-flush policy than the one they were queued under.
|
|
|
|
### How to Use
|
|
|
|
Here are some specific examples provided.
|
|
|
|
#### When Need Runtime Durability Tuning
|
|
|
|
When a file sink should start flushing each write automatically:
|
|
```moonbit
|
|
ignore(logger.file_set_auto_flush(true))
|
|
```
|
|
|
|
In this example, runtime policy is updated without rebuilding the configured logger.
|
|
|
|
#### When Need To Relax Flush Pressure
|
|
|
|
When a file sink should stop auto-flushing for throughput reasons:
|
|
```moonbit
|
|
let ok = logger.file_set_auto_flush(false)
|
|
```
|
|
|
|
In this example, the call site updates policy explicitly and can inspect the result.
|
|
|
|
### Error Case
|
|
|
|
e.g.:
|
|
- If the configured sink is not file-backed, the method returns `false`.
|
|
|
|
- If callers need an immediate flush action, `file_flush()` is the operational API.
|
|
|
|
- If a queued file sink still has pending records, callers should flush or close it first before changing auto-flush policy.
|
|
|
|
### Notes
|
|
|
|
1. Use this helper for runtime durability tuning.
|
|
|
|
2. On queued file sinks, clear pending records first so policy mutation does not retroactively affect already queued writes.
|