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Configured-logger-file-state

Read the current file sink snapshot from a ConfiguredLogger. This helper exposes path, availability, policy flags, rotation config, and failure counters as one object.

Interface

moonbit
pub fn ConfiguredLogger::file_state(self : ConfiguredLogger) -> FileSinkState {}

input

  • self : ConfiguredLogger - Config-driven runtime logger whose file state snapshot should be inspected.

output

  • FileSinkState - Current file sink snapshot.

Explanation

Detailed rules explaining key parameters and behaviors

  • File-backed sinks return a live snapshot of file state.
  • Queued file sinks forward the snapshot from the wrapped inner file sink.
  • Non-file sinks return the same fallback empty-style state produced by RuntimeSink::file_state(), with an empty path, disabled policy flags, no rotation, and zeroed counters.
  • This helper is broader than individual file counters or policy accessors because it aggregates core file status into one read.

How to Use

Here are some specific examples provided.

When Need A Full File Health Snapshot

When diagnostics should inspect runtime file state as one object:

moonbit
let state = logger.file_state()

In this example, callers receive a single file-state snapshot instead of querying each property separately.

When Need To Export File Runtime Diagnostics

When a support path should serialize current file state:

moonbit
println(stringify_file_sink_state(logger.file_state(), pretty=true))

In this example, the configured logger snapshot can be exported directly through existing JSON helpers.

Error Case

e.g.:

  • If the configured sink is not file-backed, the returned snapshot is a fallback empty-style state rather than a live file view.

  • If callers also need queue context for queued file sinks, file_runtime_state() is the richer API.

Notes

  1. Use this helper for the main one-shot file status snapshot.

  2. Prefer it over individual counters when broader file diagnostics are needed.

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