So we extend Gitlab::Email::Receiver for this new behaviour,
however we might want to split it into another class for better
testing it.
Another issue is that, currently it's using this to parse project
identifier:
Gitlab::IncomingEmail.key_from_address
Which is using:
Gitlab.config.incoming_email.address
for the receiver name. This is probably `reply` because it's used
for replying to a specific issue. We might want to introduce another
config for this, or just use `reply` instead of `incoming`.
I'll prefer to introduce a new config for this, or just change
`reply` to `incoming` because it would make sense for replying to
there, too.
The email template used in tests were copied and modified from:
`emails/valid_reply.eml` which I hope is ok.
The repository push email can be very expensive to generate, especially
with syntax-highlighted diffs. Instead of generating the email for each
recipient, generate one email object and reset the Message-Id and To
headers for each recipient. (Cloning would also be expensive in the case
of large emails, although probably not as bad as generating from
scratch.)
Rails' "url_helpers" method creates an anonymous Module (which a bunch
of methods) on every call. By caching the output of this method in a
dedicated method we can shave off about 10 seconds of loading time for
an issue with around 200 comments.
A few things to note:
- The IncomingEmail feature is now enabled even without a
correctly-formatted sub-address
- Message-ID for new thread mail are kept the same so that subsequent
notifications to this thread are grouped in the thread by the email
service that receives the notification
(i.e. In-Reply-To of the answer == Message-ID of the first thread message)
- To maximize our chance to be able to retrieve the reply key, we look
for it in the In-Reply-To header and the References header
- The pattern for the fallback reply message id is "reply-[key]@[gitlab_host]"
- Improve docs thanks to Axil
Lin Jen-Shin
Sean McGivern
Gabriel Mazetto
Yorick Peterse
Rémy Coutable
David Padilla
Jacob Vosmaer
Anton Baklanov
Douwe Maan
Grzegorz Bizon