File-sink-reopen-append

Reopen a FileSink in append mode. This helper is the explicit append-oriented recovery shortcut on the direct sink.

Interface

pub fn FileSink::reopen_append(self : FileSink) -> Bool {

input

• self : FileSink - File sink that should be reopened in append mode.

output

• Bool - Whether reopen succeeded.

Explanation

Detailed rules explaining key parameters and behaviors

• This helper is a specialized shortcut over reopen(append=Some(true)).
• Reopen behavior is fixed to append mode.
• The stored append policy is updated to true as part of the reopen path.
• On failure, the sink remains unavailable and open_failures is incremented.

How to Use

Here are some specific examples provided.

When Need Append-preserving Recovery

When file logging should continue appending after a reopen:

ignore(sink.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.reopen_append()

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

Error Case

e.g.:

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

• If reopen fails, the helper returns false and the sink stays unavailable.

Notes

1. Use this helper for explicit append-mode reopen flows.

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