Runtime-sink-file-reopen-append

Reopen the file sink behind a RuntimeSink in append mode. This helper is the explicit append-oriented direct recovery shortcut.

Interface

pub fn RuntimeSink::file_reopen_append(self : RuntimeSink) -> Bool {

input

• self : RuntimeSink - Runtime sink whose file sink should be reopened in append mode.

output

• Bool - Whether reopen succeeded.

Explanation

Detailed rules explaining key parameters and behaviors

• Plain File runtime variants reopen in append mode.
• QueuedFile runtime variants forward reopen behavior to the wrapped inner file sink.
• This helper is a specialized shortcut for a common reopen mode.
• Non-file runtime variants return false.

How to Use

Here are some specific examples provided.

When Need Append-preserving Direct Recovery

When file logging should continue appending after a reopen:

ignore(sink.file_reopen_append())

In this example, reopen behavior is fixed to append mode.

When Want An Explicit Append Shortcut

When code should avoid manually setting append overrides:

let ok = sink.file_reopen_append()

In this example, the call site states append intent directly.

Error Case

e.g.:

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

• If callers need truncate behavior instead, file_reopen_truncate() is the correct API.

Notes

1. Use this helper for explicit append-mode reopen flows on direct RuntimeSink values.

2. It is especially useful after transient file availability issues.