2020-06-05 12:42:04 +00:00
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from notify.notification import Notification
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from notify.service import NotificationService
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from sqlalchemy import asc
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from tasks import Session
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from tasks.Models import NotificationEmailData
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import os
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2020-06-08 08:23:32 +00:00
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def notify(execute_flag):
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# If True mails are sent normaly
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# If False mails are not sent. Used to avoid sending mails for jobs that
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# have been completed a long time ago. Use this if you implement notify
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# into an already existing nopaque instance. Change it to True after the
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# daemon has run one time with the flag set to False.
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# Initialize notification service
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notification_service = NotificationService(execute_flag)
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notification_service.get_smtp_configs()
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notification_service.set_server()
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# create notifications (content, recipient etc.)
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notifications = __create_mail_notifications(notification_service)
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# only login and send mails if there are any notifications
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if (len(notifications) > 0):
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try:
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notification_service.login()
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# combine new and unsent notifications
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notifications.update(notification_service.not_sent)
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# send all notifications
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__send_mail_notifications(notifications, notification_service)
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# remove unsent notifications because they have been sent now
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# but only if mail limit has not been exceeded
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if (notification_service.mail_limit_exceeded is not True):
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notification_service.not_sent = {}
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notification_service.quit()
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except Exception as e:
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notification_service.not_sent.update(notifications)
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notification_service.quit()
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2020-06-05 12:42:04 +00:00
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# Email notification functions
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def __create_mail_notifications(notification_service):
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mn_session = Session()
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notification_email_data = mn_session.query(NotificationEmailData).order_by(asc(NotificationEmailData.creation_date)).all()
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notifications = {}
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for data in notification_email_data:
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notification = Notification()
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notification.set_addresses(notification_service.email_address,
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data.job.user.email)
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subject_template = '[nopaque] Status update for your Job/Corpora: {title}!'
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subject_template_values_dict = {'title': data.job.title}
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domain = os.environ.get('NOPAQUE_DOMAIN')
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url = '{domain}/{jobs}/{id}'.format(domain=domain,
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jobs='jobs',
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id=data.job.id)
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body_template_values_dict = {'username': data.job.user.username,
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'id': data.job.id,
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'title': data.job.title,
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'status': data.notify_status,
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'time': data.creation_date,
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'url': url}
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2020-06-08 08:23:32 +00:00
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txt_tmplt = 'notify/templates/notification_messages/notification.txt'
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html_tmplt = 'notify/templates/notification_messages/notification.html'
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2020-06-05 12:42:04 +00:00
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notification.set_notification_content(subject_template,
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subject_template_values_dict,
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2020-06-08 08:23:32 +00:00
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txt_tmplt,
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html_tmplt,
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2020-06-05 12:42:04 +00:00
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body_template_values_dict)
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notifications[data.job.id] = notification
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# Using a dictionary for notifications avoids sending multiple mails
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2020-06-08 08:23:32 +00:00
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# if the status of a job changes in a few seconds. The user will not
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# get swamped with mails for queued, running and complete if those
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# happen in in a few seconds. Only the last update will be sent.
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# This depends on the sleep time interval though.
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2020-06-05 12:42:04 +00:00
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mn_session.delete(data)
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mn_session.commit()
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Session.remove()
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return notifications
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def __send_mail_notifications(notifications, notification_service):
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for key, notification in notifications.items():
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try:
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notification_service.send(notification)
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notification_service.mail_limit_exceeded = False
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except Exception as e:
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# Adds notifications to unsent if mail server exceded limit for
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# consecutive mail sending
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notification_service.not_sent[key] = notification
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notification_service.mail_limit_exceeded = True
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