Merge branch 'sh-suppress-duplicate-remote-mirror-notifications' into 'master'

Only send one notification for failed remote mirror

Closes #56222

See merge request gitlab-org/gitlab-ce!24381

(cherry picked from commit 9cd5c5f5359cdebc2ae9ba1d20d2e79bd18edce2)

6fbbd4ab Only send one notification for failed remote mirror

7 files changed, 91 insertions, 3 deletions

diff --git a/app/models/remote_mirror.rb b/app/models/remote_mirror.rb
index a3fa67c72bf..5eba7ddd75c 100644
--- a/app/models/remote_mirror.rb
+++ b/app/models/remote_mirror.rb
@@ -61,7 +61,10 @@ class RemoteMirror < ActiveRecord::Base
 
       timestamp = Time.now
       remote_mirror.update!(
-        last_update_at: timestamp, last_successful_update_at: timestamp, last_error: nil
+        last_update_at: timestamp,
+        last_successful_update_at: timestamp,
+        last_error: nil,
+        error_notification_sent: false
       )
     end
 
@@ -179,6 +182,10 @@ class RemoteMirror < ActiveRecord::Base
     project.repository.add_remote(remote_name, remote_url)
   end
 
+  def after_sent_notification
+    update_column(:error_notification_sent, true)
+  end
+
   private
 
   def store_credentials
@@ -221,7 +228,8 @@ class RemoteMirror < ActiveRecord::Base
       last_error: nil,
       last_update_at: nil,
       last_successful_update_at: nil,
-      update_status: 'finished'
+      update_status: 'finished',
+      error_notification_sent: false
     )
   end
 
diff --git a/app/workers/remote_mirror_notification_worker.rb b/app/workers/remote_mirror_notification_worker.rb
index 70c2e857d09..5bafe8e2046 100644
--- a/app/workers/remote_mirror_notification_worker.rb
+++ b/app/workers/remote_mirror_notification_worker.rb
@@ -9,7 +9,10 @@ class RemoteMirrorNotificationWorker
     # We check again if there's an error because a newer run since this job was
     # fired could've completed successfully.
     return unless remote_mirror && remote_mirror.last_error.present?
+    return if remote_mirror.error_notification_sent?
 
     NotificationService.new.remote_mirror_update_failed(remote_mirror)
+
+    remote_mirror.after_sent_notification
   end
 end
diff --git a/db/migrate/20190115054216_add_error_notification_sent_to_remote_mirrors.rb b/db/migrate/20190115054216_add_error_notification_sent_to_remote_mirrors.rb
new file mode 100644
index 00000000000..d8f979a1848
--- /dev/null
+++ b/db/migrate/20190115054216_add_error_notification_sent_to_remote_mirrors.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class AddErrorNotificationSentToRemoteMirrors < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    add_column :remote_mirrors, :error_notification_sent, :boolean
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 87826881d58..c4902116a3a 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20190103140724) do
+ActiveRecord::Schema.define(version: 20190115054216) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -1849,6 +1849,7 @@ ActiveRecord::Schema.define(version: 20190103140724) do
     t.string "encrypted_credentials_salt"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.boolean "error_notification_sent"
     t.index ["last_successful_update_at"], name: "index_remote_mirrors_on_last_successful_update_at", using: :btree
     t.index ["project_id"], name: "index_remote_mirrors_on_project_id", using: :btree
   end
diff --git a/spec/models/remote_mirror_spec.rb b/spec/models/remote_mirror_spec.rb
index 224bc9ed935..c06e9a08ab4 100644
--- a/spec/models/remote_mirror_spec.rb
+++ b/spec/models/remote_mirror_spec.rb
@@ -303,6 +303,25 @@ describe RemoteMirror, :mailer do
     end
   end
 
+  context '#url=' do
+    let(:remote_mirror) { create(:project, :repository, :remote_mirror).remote_mirrors.first }
+
+    it 'resets all the columns when URL changes' do
+      remote_mirror.update(last_error: Time.now,
+                           last_update_at: Time.now,
+                           last_successful_update_at: Time.now,
+                           update_status: 'started',
+                           error_notification_sent: true)
+
+      expect { remote_mirror.update_attribute(:url, 'http://new.example.com') }
+        .to change { remote_mirror.last_error }.to(nil)
+        .and change { remote_mirror.last_update_at }.to(nil)
+        .and change { remote_mirror.last_successful_update_at }.to(nil)
+        .and change { remote_mirror.update_status }.to('finished')
+        .and change { remote_mirror.error_notification_sent }.to(false)
+    end
+  end
+
   context '#updated_since?' do
     let(:remote_mirror) { create(:project, :repository, :remote_mirror).remote_mirrors.first }
     let(:timestamp) { Time.now - 5.minutes }
diff --git a/spec/workers/remote_mirror_notification_worker_spec.rb b/spec/workers/remote_mirror_notification_worker_spec.rb
new file mode 100644
index 00000000000..e3db10ed645
--- /dev/null
+++ b/spec/workers/remote_mirror_notification_worker_spec.rb
@@ -0,0 +1,39 @@
+require 'spec_helper'
+
+describe RemoteMirrorNotificationWorker, :mailer do
+  set(:project) { create(:project, :repository, :remote_mirror) }
+  set(:mirror) { project.remote_mirrors.first }
+
+  describe '#execute' do
+    it 'calls NotificationService#remote_mirror_update_failed when the mirror exists' do
+      mirror.update_column(:last_error, "There was a problem fetching")
+
+      expect(NotificationService).to receive_message_chain(:new, :remote_mirror_update_failed)
+
+      subject.perform(mirror.id)
+
+      expect(mirror.reload.error_notification_sent?).to be_truthy
+    end
+
+    it 'does nothing when the mirror has no errors' do
+      expect(NotificationService).not_to receive(:new)
+
+      subject.perform(mirror.id)
+    end
+
+    it 'does nothing when the mirror does not exist' do
+      expect(NotificationService).not_to receive(:new)
+
+      subject.perform(RemoteMirror.maximum(:id).to_i.succ)
+    end
+
+    it 'does nothing when a notification has already been sent' do
+      mirror.update_columns(last_error: "There was a problem fetching",
+                            error_notification_sent: true)
+
+      expect(NotificationService).not_to receive(:new)
+
+      subject.perform(mirror.id)
+    end
+  end
+end
diff --git a/spec/workers/repository_update_remote_mirror_worker_spec.rb b/spec/workers/repository_update_remote_mirror_worker_spec.rb
index d73b0b53713..b582a3650b6 100644
--- a/spec/workers/repository_update_remote_mirror_worker_spec.rb
+++ b/spec/workers/repository_update_remote_mirror_worker_spec.rb
@@ -22,6 +22,13 @@ describe RepositoryUpdateRemoteMirrorWorker do
         expect { subject.perform(remote_mirror.id, Time.now) }.to change { remote_mirror.reload.update_status }.to('finished')
       end
 
+      it 'resets the notification flag upon success' do
+        expect_any_instance_of(Projects::UpdateRemoteMirrorService).to receive(:execute).with(remote_mirror).and_return(status: :success)
+        remote_mirror.update_column(:error_notification_sent, true)
+
+        expect { subject.perform(remote_mirror.id, Time.now) }.to change { remote_mirror.reload.error_notification_sent }.to(false)
+      end
+
       it 'sets status as failed when update remote mirror service executes with errors' do
         error_message = 'fail!'