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author | George Claghorn <george@basecamp.com> | 2018-12-24 15:16:22 -0500 |
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committer | George Claghorn <george@basecamp.com> | 2018-12-25 21:32:35 -0500 |
commit | a5b2fff64ca0c1fa7be5124f40a251d991c10a85 (patch) | |
tree | 33a79841402b7151e52d9ad3949ce54f320c10aa /actionmailbox/app/models/action_mailbox/inbound_email/message_id.rb | |
parent | 4298df00ae6219b9b5b7c40f281d4fa4d66f4383 (diff) | |
parent | dcddff1d2d0c695318670686a27429a76f20ae03 (diff) | |
download | rails-a5b2fff64ca0c1fa7be5124f40a251d991c10a85.tar.gz rails-a5b2fff64ca0c1fa7be5124f40a251d991c10a85.tar.bz2 rails-a5b2fff64ca0c1fa7be5124f40a251d991c10a85.zip |
Import Action Mailbox
Diffstat (limited to 'actionmailbox/app/models/action_mailbox/inbound_email/message_id.rb')
-rw-r--r-- | actionmailbox/app/models/action_mailbox/inbound_email/message_id.rb | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/actionmailbox/app/models/action_mailbox/inbound_email/message_id.rb b/actionmailbox/app/models/action_mailbox/inbound_email/message_id.rb new file mode 100644 index 0000000000..244a2e439b --- /dev/null +++ b/actionmailbox/app/models/action_mailbox/inbound_email/message_id.rb @@ -0,0 +1,38 @@ +# frozen_string_literal: true + +# The `Message-ID` as specified by rfc822 is supposed to be a unique identifier for that individual email. +# That makes it an ideal tracking token for debugging and forensics, just like `X-Request-Id` does for +# web request. +# +# If an inbound email does not, against the rfc822 mandate, specify a Message-ID, one will be generated +# using the approach from `Mail::MessageIdField`. +module ActionMailbox::InboundEmail::MessageId + extend ActiveSupport::Concern + + included do + before_save :generate_missing_message_id + end + + class_methods do + # Create a new `InboundEmail` from the raw `source` of the email, which be uploaded as a Active Storage + # attachment called `raw_email`. Before the upload, extract the Message-ID from the `source` and set + # it as an attribute on the new `InboundEmail`. + def create_and_extract_message_id!(source, **options) + create! message_id: extract_message_id(source), **options do |inbound_email| + inbound_email.raw_email.attach io: StringIO.new(source), filename: "message.eml", content_type: "message/rfc822" + end + end + + private + def extract_message_id(source) + Mail.from_source(source).message_id rescue nil + end + end + + private + def generate_missing_message_id + self.message_id ||= Mail::MessageIdField.new.message_id.tap do |message_id| + logger.warn "Message-ID couldn't be parsed or is missing. Generated a new Message-ID: #{message_id}" + end + end +end |