gitlab-org--gitlab-foss/app/services/notification_recipient_service.rb

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#
# Used by NotificationService to determine who should receive notification
#
class NotificationRecipientService
attr_reader :project
def initialize(project)
@project = project
end
def build_recipients(target, current_user, action: nil, previous_assignee: nil, skip_current_user: true)
custom_action = build_custom_key(action, target)
recipients = target.participants(current_user)
recipients = add_project_watchers(recipients)
recipients = add_custom_notifications(recipients, custom_action)
recipients = reject_mention_users(recipients)
# Re-assign is considered as a mention of the new assignee so we add the
# new assignee to the list of recipients after we rejected users with
# the "on mention" notification level
if [:reassign_merge_request, :reassign_issue].include?(custom_action)
recipients << previous_assignee if previous_assignee
recipients << target.assignee
end
recipients = reject_muted_users(recipients)
recipients = add_subscribed_users(recipients, target)
if [:new_issue, :new_merge_request].include?(custom_action)
recipients = add_labels_subscribers(recipients, target)
end
recipients = reject_unsubscribed_users(recipients, target)
recipients = reject_users_without_access(recipients, target)
recipients.delete(current_user) if skip_current_user && !current_user.notified_of_own_activity?
recipients.uniq
end
def build_pipeline_recipients(target, current_user, action:)
return [] unless current_user
custom_action =
case action.to_s
when 'failed'
:failed_pipeline
when 'success'
:success_pipeline
end
notification_setting = notification_setting_for_user_project(current_user, target.project)
return [] if notification_setting.mention? || notification_setting.disabled?
return [] if notification_setting.custom? && !notification_setting.public_send(custom_action)
return [] if (notification_setting.watch? || notification_setting.participating?) && NotificationSetting::EXCLUDED_WATCHER_EVENTS.include?(custom_action)
reject_users_without_access([current_user], target)
end
def build_relabeled_recipients(target, current_user, labels:)
recipients = add_labels_subscribers([], target, labels: labels)
recipients = reject_unsubscribed_users(recipients, target)
recipients = reject_users_without_access(recipients, target)
recipients.delete(current_user) unless current_user.notified_of_own_activity?
recipients.uniq
end
def build_new_note_recipients(note)
target = note.noteable
ability, subject = if note.for_personal_snippet?
[:read_personal_snippet, note.noteable]
else
[:read_project, note.project]
end
mentioned_users = note.mentioned_users.select { |user| user.can?(ability, subject) }
# Add all users participating in the thread (author, assignee, comment authors)
recipients =
if target.respond_to?(:participants)
target.participants(note.author)
else
mentioned_users
end
unless note.for_personal_snippet?
# Merge project watchers
recipients = add_project_watchers(recipients)
# Merge project with custom notification
recipients = add_custom_notifications(recipients, :new_note)
end
# Reject users with Mention notification level, except those mentioned in _this_ note.
recipients = reject_mention_users(recipients - mentioned_users)
recipients = recipients + mentioned_users
recipients = reject_muted_users(recipients)
recipients = add_subscribed_users(recipients, note.noteable)
recipients = reject_unsubscribed_users(recipients, note.noteable)
recipients = reject_users_without_access(recipients, note.noteable)
recipients.delete(note.author) unless note.author.notified_of_own_activity?
recipients.uniq
end
# Remove users with disabled notifications from array
# Also remove duplications and nil recipients
def reject_muted_users(users)
reject_users(users, :disabled)
end
protected
# Get project/group users with CUSTOM notification level
def add_custom_notifications(recipients, action)
user_ids = []
# Users with a notification setting on group or project
user_ids += user_ids_notifiable_on(project, :custom, action)
user_ids += user_ids_notifiable_on(project.group, :custom, action)
# Users with global level custom
user_ids_with_project_level_global = user_ids_notifiable_on(project, :global)
user_ids_with_group_level_global = user_ids_notifiable_on(project.group, :global)
global_users_ids = user_ids_with_project_level_global.concat(user_ids_with_group_level_global)
user_ids += user_ids_with_global_level_custom(global_users_ids, action)
recipients.concat(User.find(user_ids))
end
def add_project_watchers(recipients)
recipients.concat(project_watchers).compact
end
# Get project users with WATCH notification level
def project_watchers
project_members_ids = user_ids_notifiable_on(project)
user_ids_with_project_global = user_ids_notifiable_on(project, :global)
user_ids_with_group_global = user_ids_notifiable_on(project.group, :global)
user_ids = user_ids_with_global_level_watch((user_ids_with_project_global + user_ids_with_group_global).uniq)
user_ids_with_project_setting = select_project_members_ids(project, user_ids_with_project_global, user_ids)
user_ids_with_group_setting = select_group_members_ids(project.group, project_members_ids, user_ids_with_group_global, user_ids)
User.where(id: user_ids_with_project_setting.concat(user_ids_with_group_setting).uniq).to_a
end
# Remove users with notification level 'Mentioned'
def reject_mention_users(users)
reject_users(users, :mention)
end
def add_subscribed_users(recipients, target)
return recipients unless target.respond_to? :subscribers
recipients + target.subscribers(project)
end
def user_ids_notifiable_on(resource, notification_level = nil, action = nil)
return [] unless resource
if notification_level
settings = resource.notification_settings.where(level: NotificationSetting.levels[notification_level])
settings = settings.select { |setting| setting.events[action] } if action.present?
settings.map(&:user_id)
else
resource.notification_settings.pluck(:user_id)
end
end
# Build a list of user_ids based on project notification settings
def select_project_members_ids(project, global_setting, user_ids_global_level_watch)
user_ids = user_ids_notifiable_on(project, :watch)
# If project setting is global, add to watch list if global setting is watch
global_setting.each do |user_id|
if user_ids_global_level_watch.include?(user_id)
user_ids << user_id
end
end
user_ids
end
# Build a list of user_ids based on group notification settings
def select_group_members_ids(group, project_members, global_setting, user_ids_global_level_watch)
uids = user_ids_notifiable_on(group, :watch)
# Group setting is watch, add to user_ids list if user is not project member
user_ids = []
uids.each do |user_id|
if project_members.exclude?(user_id)
user_ids << user_id
end
end
# Group setting is global, add to user_ids list if global setting is watch
global_setting.each do |user_id|
if project_members.exclude?(user_id) && user_ids_global_level_watch.include?(user_id)
user_ids << user_id
end
end
user_ids
end
def user_ids_with_global_level_watch(ids)
settings_with_global_level_of(:watch, ids).pluck(:user_id)
end
def user_ids_with_global_level_custom(ids, action)
settings = settings_with_global_level_of(:custom, ids)
settings = settings.select { |setting| setting.events[action] }
settings.map(&:user_id)
end
def settings_with_global_level_of(level, ids)
NotificationSetting.where(
user_id: ids,
source_type: nil,
level: NotificationSetting.levels[level]
)
end
# Reject users which has certain notification level
#
# Example:
# reject_users(users, :watch, project)
#
def reject_users(users, level)
level = level.to_s
unless NotificationSetting.levels.keys.include?(level)
raise 'Invalid notification level'
end
users = users.to_a.compact.uniq
users = users.select { |u| u.can?(:receive_notifications) }
users.reject do |user|
global_notification_setting = user.global_notification_setting
next global_notification_setting.level == level unless project
setting = user.notification_settings_for(project)
if project.group && (setting.nil? || setting.global?)
setting = user.notification_settings_for(project.group)
end
# reject users who globally set mention notification and has no setting per project/group
next global_notification_setting.level == level unless setting
# reject users who set mention notification in project
next true if setting.level == level
# reject users who have mention level in project and disabled in global settings
setting.global? && global_notification_setting.level == level
end
end
def reject_unsubscribed_users(recipients, target)
return recipients unless target.respond_to? :subscriptions
recipients.reject do |user|
subscription = target.subscriptions.find_by_user_id(user.id)
subscription && !subscription.subscribed
end
end
def reject_users_without_access(recipients, target)
ability = case target
when Issuable
:"read_#{target.to_ability_name}"
when Ci::Pipeline
:read_build # We have build trace in pipeline emails
end
return recipients unless ability
recipients.select do |user|
user.can?(ability, target)
end
end
def add_labels_subscribers(recipients, target, labels: nil)
return recipients unless target.respond_to? :labels
(labels || target.labels).each do |label|
recipients += label.subscribers(project)
end
recipients
end
# Build event key to search on custom notification level
# Check NotificationSetting::EMAIL_EVENTS
def build_custom_key(action, object)
"#{action}_#{object.class.model_name.name.underscore}".to_sym
end
def notification_setting_for_user_project(user, project)
project_setting = user.notification_settings_for(project)
return project_setting unless project_setting.global?
group_setting = user.notification_settings_for(project.group)
return group_setting unless group_setting.global?
user.global_notification_setting
end
end