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Runtime-sink-file-rotation-enabled ​

Read whether rotation is currently enabled on a file-backed RuntimeSink. This helper exposes direct runtime rotation state without requiring a ConfiguredLogger wrapper.

Interface ​

moonbit
pub fn RuntimeSink::file_rotation_enabled(self : RuntimeSink) -> Bool {

input ​

  • self : RuntimeSink - Runtime sink whose file rotation state should be inspected.

output ​

  • Bool - Whether rotation is currently enabled.

Explanation ​

Detailed rules explaining key parameters and behaviors

  • Plain File runtime variants report whether the wrapped FileSink currently has a rotation config.
  • QueuedFile runtime variants forward the state from the wrapped inner FileSink.
  • Non-file runtime variants return false.
  • This helper is narrower than file_rotation_config() when callers only need a yes-or-no answer.

How to Use ​

Here are some specific examples provided.

When Need Direct Runtime Rotation Visibility ​

When code owns a RuntimeSink directly and should expose whether rotation is active:

moonbit
let rotating = sink.file_rotation_enabled()

In this example, runtime rotation state is checked without inspecting an optional config value.

When Guard Rotation-specific Direct Logic ​

When code should branch only for rotating file sinks:

moonbit
if sink.file_rotation_enabled() {
  println("rotation active")
}

In this example, direct runtime policy drives control flow.

Error Case ​

e.g.:

  • If the runtime sink is not file-backed, the method returns false.

  • If callers need the actual rotation parameters, file_rotation_config() is the better API.

Notes ​

  1. Use this helper for simple direct runtime rotation checks.

  2. Pair it with file_rotation_config() when policy details also matter.

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