Update daemon

daemon/nopaqued.py

-from concurrent.futures import ThreadPoolExecutor
+from logger.logger import init_logger
 from tasks.check_corpora import check_corpora
 from tasks.check_jobs import check_jobs
 from tasks.notify import notify
+from time import sleep
 import os
 
 
-# TODO: Check if thread is still alive and execute next thread after that
-# TODO: Check line length
-
-
 def nopaqued():
-    execute_notifications = bool(os.environ.get('NOPAQUE_EXECUTE_NOTIFICATIONS', True))  # noqa
-    # executing background functions
+    logger = init_logger()
+    NOPAQUE_EXECUTE_NOTIFICATIONS = os.environ.get('NOPAQUE_EXECUTE_NOTIFICATIONS', 'True').lower() == 'true'  # noqa
+    threads = {'check_corpora': None, 'check_jobs': None, 'notify': None}
+
+    threads['check_corpora'] = check_corpora()
+    threads['check_jobs'] = check_jobs()
+    threads['notify'] = notify(NOPAQUE_EXECUTE_NOTIFICATIONS)
     while True:
-        with ThreadPoolExecutor(max_workers=3) as executor:
-            executor.submit(check_jobs)
-            executor.submit(check_corpora)
-            executor.submit(notify, execute_notifications)
+        logger.warning('check_corpora: {}'.format(threads['check_corpora'].is_alive()))
+        if not threads['check_corpora'].is_alive():
+            threads['check_corpora'] = check_corpora()
+        logger.warning('check_jobs: {}'.format(threads['check_jobs'].is_alive()))
+        if not threads['check_jobs'].is_alive():
+            threads['check_jobs'] = check_jobs()
+        logger.warning('notify: {}'.format(threads['notify'].is_alive()))
+        if not threads['notify'].is_alive():
+            threads['notify'] = notify(NOPAQUE_EXECUTE_NOTIFICATIONS)
             # If execute_notifications True mails are sent.
             # If execute_notifications False no mails are sent.
             # But notification status will be set nonetheless.
+        sleep(3)
 
 
 if __name__ == '__main__':

daemon/tasks/check_corpora.py

 from logger.logger import init_logger
 from tasks import Session, docker_client, NOPAQUE_STORAGE
+from tasks.decorators import background
 from tasks.Models import Corpus
 import docker
 import os
 import shutil
 
 
+@background
 def check_corpora():
     c_session = Session()
     corpora = c_session.query(Corpus).all()
@@ -101,7 +103,7 @@ def __create_cqpserver_container(corpus):
                       'volumes': [corpus_data_dir + ':/corpora/data:rw',
                                   corpus_registry_dir + ':/usr/local/share/cwb/registry:rw'],
                       'name': 'cqpserver_{}'.format(corpus.id),
-                      'network': 'opaque_default'}
+                      'network': 'nopaque_default'}
     container_image = ('gitlab.ub.uni-bielefeld.de:4567/sfb1288inf/cqpserver:latest')
     try:
         container = docker_client.containers.get(container_args['name'])

daemon/tasks/check_jobs.py

 from datetime import datetime
 from logger.logger import init_logger
 from tasks import Session, docker_client, NOPAQUE_STORAGE
+from tasks.decorators import background
 from tasks.Models import Job, NotificationData, NotificationEmailData, JobResult
 import docker
 import json
 import os
 
 
+@background
 def check_jobs():
     # logger = init_logger()
     cj_session = Session()

daemon/tasks/decorators.py

+from functools import wraps
+from threading import Thread
+
+
+def background(f):
+    '''
+    ' This decorator executes a function in a Thread.
+    '''
+    @wraps(f)
+    def wrapped(*args, **kwargs):
+        thread = Thread(target=f, args=args, kwargs=kwargs)
+        thread.start()
+        return thread
+    return wrapped

daemon/tasks/notify.py

@@ -2,10 +2,12 @@ from notify.notification import Notification
 from notify.service import NotificationService
 from sqlalchemy import asc
 from tasks import Session
+from tasks.decorators import background
 from tasks.Models import NotificationEmailData
 import os
 
 
+@background
 def notify(execute_flag):
     # If True mails are sent normaly
     # If False mails are not sent. Used to avoid sending mails for jobs that