File-sink-reopen

Reopen a FileSink. This helper is useful for direct recovery flows after file unavailability or after file policy changes.

Interface

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

input

• self : FileSink - File sink that 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

• append=None preserves the sink's current append policy.
• Some(true/false) overrides append mode for this reopen and updates the stored append policy.
• If a handle is currently open, the method closes it before attempting reopen.
• On reopen failure, open_failures is incremented and the sink remains unavailable.

How to Use

Here are some specific examples provided.

When Need Recovery After File Failure

When direct file logging code should attempt to restore sink availability:

ignore(sink.reopen())

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

When Need Explicit Append-mode Reopen

When recovery should choose append or truncate behavior explicitly:

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

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

Error Case

e.g.:

• If reopen fails, the method returns false and increments open_failures().

• If callers only need the current configured policy with no one-off override, reopen_with_current_policy() may be the clearer API.

Notes

1. Use this helper for direct recovery flows.

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