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notification.rb
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Thu, Apr 24, 3:24 PM

notification.rb
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require 'singleton'
class Notification
include Singleton
# Send out a notification about notable record changes.
def notify_record(user, record, context)
ActiveSupport::Notifications.instrument(
'webdns.record',
user: user,
context: context,
object: record)
end
# Send out a notification about notable domain changes.
def notify_domain(user, domain, context)
ActiveSupport::Notifications.instrument(
'webdns.domain',
user: user,
context: context,
object: domain)
end
# Subscribe to domain/record notifications.
def hook
hook_record
hook_domain
end
private
def hook_record
ActiveSupport::Notifications
.subscribe 'webdns.record' do |_name, _started, _finished, _unique_id, data|
handle_record(data)
end
end
def hook_domain
ActiveSupport::Notifications
.subscribe 'webdns.domain' do |_name, _started, _finished, _unique_id, data|
handle_domain(data)
end
end
def handle_record(data)
record, context, user = data.values_at(:object, :context, :user)
domain = record.domain
changes = record.previous_changes
# Nobody is interested in those
changes.delete('updated_at')
changes.delete('created_at')
return if changes.empty? && context == :update
others = domain.group.users.where.not(id: user.id).pluck(:email)
return if others.empty?
admin_action = !user.groups.exists?(domain.group_id)
NotificationMailer.notify_record(
record: record,
context: context,
user: user,
admin: admin_action,
others: others,
changes: changes
).deliver
end
def handle_domain(data)
domain, context, user = data.values_at(:object, :context, :user)
changes = domain.previous_changes
# Nobody is interested in those
changes.delete('updated_at')
changes.delete('created_at')
return if changes.empty? && context == :update
others = domain.group.users.where.not(id: user.id).pluck(:email)
return if others.empty?
admin_action = !user.groups.exists?(domain.group_id)
NotificationMailer.notify_domain(
domain: domain,
context: context,
user: user,
admin: admin_action,
others: others,
changes: changes
).deliver
end
end

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