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Refactor Imap.delete_msg() error handling

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Mutable UID reference is removed. Instead, ImapActionResult is
returned immediately.

If message has changed and UID does not correspond to expected
message, ImapActionResult::Failed is returned. Temprorary IMAP errors
result in ImapActionResult::RetryLater.

On the job side, ImapActionResult::RetryLater does not result in
immediate job retry anymore. Instead, job is retried with a backoff.
This commit is contained in:
Alexander Krotov
2020-02-24 00:29:46 +03:00
parent c1c769ceb0
commit 98bd64621a
2 changed files with 16 additions and 11 deletions
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12
src/imap/mod.rs
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@@ -994,10 +994,10 @@ impl Imap {
context: &Context,
message_id: &str,
folder: &str,
uid: &mut u32,
uid: u32,
) -> ImapActionResult {
task::block_on(async move {
if let Some(imapresult) = self.prepare_imap_operation_on_msg(context, folder, *uid) {
if let Some(imapresult) = self.prepare_imap_operation_on_msg(context, folder, uid) {
return imapresult;
}
// we are connected, and the folder is selected
@@ -1034,7 +1034,7 @@ impl Imap {
remote_message_id,
message_id,
);
*uid = 0;
return ImapActionResult::Failed;
}
}
Err(err) => {
@@ -1042,18 +1042,18 @@ impl Imap {
context,
"Cannot delete {} on IMAP: {}", display_imap_id, err
);
*uid = 0;
return ImapActionResult::RetryLater;
}
}
}
// mark the message for deletion
if !self.add_flag_finalized(context, *uid, "\\Deleted").await {
if !self.add_flag_finalized(context, uid, "\\Deleted").await {
warn!(
context,
"Cannot mark message {} as \"Deleted\".", display_imap_id
);
ImapActionResult::Failed
ImapActionResult::RetryLater
} else {
emit_event!(
context,