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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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15
src/job.rs
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@@ -449,7 +449,7 @@ impl Job {
fn DeleteMsgOnImap(&mut self, context: &Context) -> Status {
let imap_inbox = &context.inbox_thread.read().unwrap().imap;
let mut msg = job_try!(Message::load_from_db(context, MsgId::new(self.foreign_id)));
let msg = job_try!(Message::load_from_db(context, MsgId::new(self.foreign_id)));
if !msg.rfc724_mid.is_empty() {
if message::rfc724_mid_cnt(context, &msg.rfc724_mid) > 1 {
@@ -462,10 +462,15 @@ impl Job {
we delete the message from the server */
let mid = msg.rfc724_mid;
let server_folder = msg.server_folder.as_ref().unwrap();
let res = imap_inbox.delete_msg(context, &mid, server_folder, &mut msg.server_uid);
if res == ImapActionResult::RetryLater {
// XXX RetryLater is converted to RetryNow here
return Status::RetryNow;
let res = imap_inbox.delete_msg(context, &mid, server_folder, msg.server_uid);
match res {
ImapActionResult::RetryLater => {
return Status::RetryLater;
}
ImapActionResult::AlreadyDone | ImapActionResult::Success => {}
ImapActionResult::Failed => {
return Status::Finished(Err(format_err!("Message deletion failed")));
}
}
}
Message::delete_from_db(context, msg.id);