Runtime-sink-file-reopen

Reopen the file sink behind a RuntimeSink. This helper is useful for direct recovery flows after file unavailability or policy changes.

Interface

pub fn RuntimeSink::file_reopen(self : RuntimeSink, append~ : Bool? = None) -> Bool {

input

• self : RuntimeSink - Runtime sink whose file sink should be reopened.
• append : Bool? - Optional append-mode override used for reopen behavior.

output

• Bool - Whether reopen succeeded.

Explanation

Detailed rules explaining key parameters and behaviors

• Plain File runtime variants reopen directly.
• QueuedFile runtime variants forward reopen behavior to the wrapped inner file sink.
• append=None preserves current reopen policy, while Some(true/false) overrides append mode.
• Non-file runtime variants return false.

How to Use

Here are some specific examples provided.

When Need Recovery After File Failure

When code should attempt to restore file logging through a RuntimeSink value:

ignore(sink.file_reopen())

In this example, the runtime sink tries to reopen its file sink using current policy.

When Need Explicit Append-mode Reopen

When recovery should choose append or truncate behavior explicitly:

let ok = sink.file_reopen(append=Some(true))

In this example, reopen behavior is directed by the call site.

Error Case

e.g.:

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

• If callers only need the current configured policy, file_reopen_with_current_policy() may be the clearer API.

Notes

1. Use this helper for explicit direct recovery flows on RuntimeSink values.

2. Pair it with file_available() and failure counters when diagnosing reopen behavior.