Allow more mail clients to group emails by thread

* send a 'In-Reply-To' header along the 'References' header
* subject of answers to an existing thread begins with 'Re: '
parent e46ec91a
......@@ -4,8 +4,8 @@ module Emails
@issue = Issue.find(issue_id)
@project = @issue.project
@target_url = project_issue_url(@project, @issue)
set_message_id("issue_#{issue_id}")
mail(from: sender(@issue.author_id),
mail_new_thread(@issue,
from: sender(@issue.author_id),
to: recipient(recipient_id),
subject: subject("#{@issue.title} (##{@issue.iid})"))
end
......@@ -15,8 +15,8 @@ module Emails
@previous_assignee = User.find_by(id: previous_assignee_id) if previous_assignee_id
@project = @issue.project
@target_url = project_issue_url(@project, @issue)
set_reference("issue_#{issue_id}")
mail(from: sender(updated_by_user_id),
mail_answer_thread(@issue,
from: sender(updated_by_user_id),
to: recipient(recipient_id),
subject: subject("#{@issue.title} (##{@issue.iid})"))
end
......@@ -26,8 +26,8 @@ module Emails
@project = @issue.project
@updated_by = User.find updated_by_user_id
@target_url = project_issue_url(@project, @issue)
set_reference("issue_#{issue_id}")
mail(from: sender(updated_by_user_id),
mail_answer_thread(@issue,
from: sender(updated_by_user_id),
to: recipient(recipient_id),
subject: subject("#{@issue.title} (##{@issue.iid})"))
end
......@@ -38,8 +38,8 @@ module Emails
@project = @issue.project
@updated_by = User.find updated_by_user_id
@target_url = project_issue_url(@project, @issue)
set_reference("issue_#{issue_id}")
mail(from: sender(updated_by_user_id),
mail_answer_thread(@issue,
from: sender(updated_by_user_id),
to: recipient(recipient_id),
subject: subject("#{@issue.title} (##{@issue.iid})"))
end
......
......@@ -4,8 +4,8 @@ module Emails
@merge_request = MergeRequest.find(merge_request_id)
@project = @merge_request.project
@target_url = project_merge_request_url(@project, @merge_request)
set_message_id("merge_request_#{merge_request_id}")
mail(from: sender(@merge_request.author_id),
mail_new_thread(@merge_request,
from: sender(@merge_request.author_id),
to: recipient(recipient_id),
subject: subject("#{@merge_request.title} (##{@merge_request.iid})"))
end
......@@ -15,8 +15,8 @@ module Emails
@previous_assignee = User.find_by(id: previous_assignee_id) if previous_assignee_id
@project = @merge_request.project
@target_url = project_merge_request_url(@project, @merge_request)
set_reference("merge_request_#{merge_request_id}")
mail(from: sender(updated_by_user_id),
mail_answer_thread(@merge_request,
from: sender(updated_by_user_id),
to: recipient(recipient_id),
subject: subject("#{@merge_request.title} (##{@merge_request.iid})"))
end
......@@ -26,8 +26,8 @@ module Emails
@updated_by = User.find updated_by_user_id
@project = @merge_request.project
@target_url = project_merge_request_url(@project, @merge_request)
set_reference("merge_request_#{merge_request_id}")
mail(from: sender(updated_by_user_id),
mail_answer_thread(@merge_request,
from: sender(updated_by_user_id),
to: recipient(recipient_id),
subject: subject("#{@merge_request.title} (##{@merge_request.iid})"))
end
......@@ -36,8 +36,8 @@ module Emails
@merge_request = MergeRequest.find(merge_request_id)
@project = @merge_request.project
@target_url = project_merge_request_url(@project, @merge_request)
set_reference("merge_request_#{merge_request_id}")
mail(from: sender(updated_by_user_id),
mail_answer_thread(@merge_request,
from: sender(updated_by_user_id),
to: recipient(recipient_id),
subject: subject("#{@merge_request.title} (##{@merge_request.iid})"))
end
......
......@@ -5,7 +5,8 @@ module Emails
@commit = @note.noteable
@project = @note.project
@target_url = project_commit_url(@project, @commit, anchor: "note_#{@note.id}")
mail(from: sender(@note.author_id),
mail_answer_thread(@commit,
from: sender(@note.author_id),
to: recipient(recipient_id),
subject: subject("#{@commit.title} (#{@commit.short_id})"))
end
......@@ -15,8 +16,8 @@ module Emails
@issue = @note.noteable
@project = @note.project
@target_url = project_issue_url(@project, @issue, anchor: "note_#{@note.id}")
set_reference("issue_#{@issue.id}")
mail(from: sender(@note.author_id),
mail_answer_thread(@issue,
from: sender(@note.author_id),
to: recipient(recipient_id),
subject: subject("#{@issue.title} (##{@issue.iid})"))
end
......@@ -26,8 +27,8 @@ module Emails
@merge_request = @note.noteable
@project = @note.project
@target_url = project_merge_request_url(@project, @merge_request, anchor: "note_#{@note.id}")
set_reference("merge_request_#{@merge_request.id}")
mail(from: sender(@note.author_id),
mail_answer_thread(@merge_request,
from: sender(@note.author_id),
to: recipient(recipient_id),
subject: subject("#{@merge_request.title} (##{@merge_request.iid})"))
end
......
class Notify < ActionMailer::Base
include ActionDispatch::Routing::PolymorphicRoutes
include Emails::Issues
include Emails::MergeRequests
include Emails::Notes
......@@ -53,14 +55,6 @@ class Notify < ActionMailer::Base
end
end
# Set the Message-ID header field
#
# local_part - The local part of the message ID
#
def set_message_id(local_part)
headers["Message-ID"] = "<#{local_part}@#{Gitlab.config.gitlab.host}>"
end
# Set the References header field
#
# local_part - The local part of the referenced message ID
......@@ -93,4 +87,40 @@ class Notify < ActionMailer::Base
subject << extra.join(' | ') if extra.present?
subject
end
# Return a string suitable for inclusion in the 'Message-Id' mail header.
#
# The message-id is generated from the unique URL to a model object.
def message_id(model)
model_name = model.class.model_name.singular_route_key
"<#{model_name}_#{model.id}@#{Gitlab.config.gitlab.host}>"
end
# Send an email that starts a new conversation thread,
# with headers suitable for grouping by thread in email clients.
#
# See: mail_answer_thread
def mail_new_thread(model, headers = {}, &block)
headers['Message-ID'] = message_id(model)
mail(headers, &block)
end
# Send an email that responds to an existing conversation thread,
# with headers suitable for grouping by thread in email clients.
#
# For grouping emails by thread, email clients heuristics require the answers to:
#
# * have a subject that begin by 'Re: '
# * have a 'In-Reply-To' or 'References' header that references the original 'Message-ID'
#
def mail_answer_thread(model, headers = {}, &block)
headers['In-Reply-To'] = message_id(model)
headers['References'] = message_id(model)
if (headers[:subject])
headers[:subject].prepend('Re: ')
end
mail(headers, &block)
end
end
......@@ -22,6 +22,23 @@ describe Notify do
end
end
shared_examples 'an email starting a new thread' do |message_id_prefix|
it 'has a discussion identifier' do
should have_header 'Message-ID', /<#{message_id_prefix}(.*)@#{Gitlab.config.gitlab.host}>/
end
end
shared_examples 'an answer to an existing thread' do |thread_id_prefix|
it 'has a subject that begins with Re: ' do
should have_subject /^Re: /
end
it 'has headers that reference an existing thread' do
should have_header 'References', /<#{thread_id_prefix}(.*)@#{Gitlab.config.gitlab.host}>/
should have_header 'In-Reply-To', /<#{thread_id_prefix}(.*)@#{Gitlab.config.gitlab.host}>/
end
end
describe 'for new users, the email' do
let(:example_site_path) { root_path }
let(:new_user) { create(:user, email: 'newguy@example.com', created_by_id: 1) }
......@@ -153,6 +170,7 @@ describe Notify do
subject { Notify.new_issue_email(issue.assignee_id, issue.id) }
it_behaves_like 'an assignee email'
it_behaves_like 'an email starting a new thread', 'issue'
it 'has the correct subject' do
should have_subject /#{project.name} \| #{issue.title} \(##{issue.iid}\)/
......@@ -161,10 +179,6 @@ describe Notify do
it 'contains a link to the new issue' do
should have_body_text /#{project_issue_path project, issue}/
end
it 'has the correct message-id set' do
should have_header 'Message-ID', "<issue_#{issue.id}@#{Gitlab.config.gitlab.host}>"
end
end
describe 'that are new with a description' do
......@@ -179,6 +193,7 @@ describe Notify do
subject { Notify.reassigned_issue_email(recipient.id, issue.id, previous_assignee.id, current_user) }
it_behaves_like 'a multiple recipients email'
it_behaves_like 'an answer to an existing thread', 'issue'
it 'is sent as the author' do
sender = subject.header[:from].addrs[0]
......@@ -201,16 +216,14 @@ describe Notify do
it 'contains a link to the issue' do
should have_body_text /#{project_issue_path project, issue}/
end
it 'has the correct reference set' do
should have_header 'References', "<issue_#{issue.id}@#{Gitlab.config.gitlab.host}>"
end
end
describe 'status changed' do
let(:status) { 'closed' }
subject { Notify.issue_status_changed_email(recipient.id, issue.id, status, current_user) }
it_behaves_like 'an answer to an existing thread', 'issue'
it 'is sent as the author' do
sender = subject.header[:from].addrs[0]
sender.display_name.should eq(current_user.name)
......@@ -232,10 +245,6 @@ describe Notify do
it 'contains a link to the issue' do
should have_body_text /#{project_issue_path project, issue}/
end
it 'has the correct reference set' do
should have_header 'References', "<issue_#{issue.id}@#{Gitlab.config.gitlab.host}>"
end
end
end
......@@ -249,6 +258,7 @@ describe Notify do
subject { Notify.new_merge_request_email(merge_request.assignee_id, merge_request.id) }
it_behaves_like 'an assignee email'
it_behaves_like 'an email starting a new thread', 'merge_request'
it 'has the correct subject' do
should have_subject /#{merge_request.title} \(##{merge_request.iid}\)/
......@@ -283,6 +293,7 @@ describe Notify do
subject { Notify.reassigned_merge_request_email(recipient.id, merge_request.id, previous_assignee.id, current_user.id) }
it_behaves_like 'a multiple recipients email'
it_behaves_like 'an answer to an existing thread', 'merge_request'
it 'is sent as the author' do
sender = subject.header[:from].addrs[0]
......@@ -311,6 +322,7 @@ describe Notify do
subject { Notify.merged_merge_request_email(recipient.id, merge_request.id, merge_author.id) }
it_behaves_like 'a multiple recipients email'
it_behaves_like 'an answer to an existing thread', 'merge_request'
it 'is sent as the merge author' do
sender = subject.header[:from].addrs[0]
......@@ -329,10 +341,6 @@ describe Notify do
it 'contains a link to the merge request' do
should have_body_text /#{project_merge_request_path project, merge_request}/
end
it 'has the correct reference set' do
should have_header 'References', "<merge_request_#{merge_request.id}@#{Gitlab.config.gitlab.host}>"
end
end
end
end
......@@ -410,6 +418,7 @@ describe Notify do
subject { Notify.note_commit_email(recipient.id, note.id) }
it_behaves_like 'a note email'
it_behaves_like 'an answer to an existing thread', 'commits'
it 'has the correct subject' do
should have_subject /#{commit.title} \(#{commit.short_id}\)/
......@@ -428,6 +437,7 @@ describe Notify do
subject { Notify.note_merge_request_email(recipient.id, note.id) }
it_behaves_like 'a note email'
it_behaves_like 'an answer to an existing thread', 'merge_request'
it 'has the correct subject' do
should have_subject /#{merge_request.title} \(##{merge_request.iid}\)/
......@@ -446,6 +456,7 @@ describe Notify do
subject { Notify.note_issue_email(recipient.id, note.id) }
it_behaves_like 'a note email'
it_behaves_like 'an answer to an existing thread', 'issue'
it 'has the correct subject' do
should have_subject /#{issue.title} \(##{issue.iid}\)/
......
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