Rename TaskRunner to Daemon (because it essentially is one) and restructure cli

app/cli.py

@@ -11,15 +11,26 @@ def register(app):
         # create or update user roles
         Role.insert_roles()
 
-    @app.cli.command()
-    def tasks():
-        from app.tasks import TaskRunner
-        task_runner = TaskRunner()
-        task_runner.run()
+    @app.cli.group()
+    def daemon():
+        """Daemon commands."""
+        pass
 
-    @app.cli.command()
+    @daemon.command()
+    def run():
+        """Run daemon"""
+        from app.daemon import Daemon
+        daemon = Daemon()
+        daemon.run()
+
+    @app.cli.group()
     def test():
-        """Run the unit tests."""
+        """Test commands."""
+        pass
+
+    @test.command()
+    def run():
+        """Run unit tests."""
         import unittest
         tests = unittest.TestLoader().discover('tests')
         unittest.TextTestRunner(verbosity=2).run(tests)

app/daemon/__init__.py

@@ -0,0 +1,20 @@
+from app import db
+from time import sleep
+from .corpus_utils import CheckCorporaMixin
+from .job_utils import CheckJobsMixin
+import docker
+
+
+class Daemon(CheckCorporaMixin, CheckJobsMixin):
+    def __init__(self):
+        self.docker = docker.from_env()
+
+    def run(self):
+        while True:
+            try:
+                self.check_corpora()
+                self.check_jobs()
+                db.session.commit()
+            except:
+                pass
+            sleep(1.5)

app/tasks/__init__.py

@@ -1,14 +0,0 @@
-from .corpus_utils import CheckCorporaMixin
-from .job_utils import CheckJobsMixin
-from ..import db, socketio
-import docker
-
-
-class TaskRunner(CheckCorporaMixin, CheckJobsMixin):
-    def __init__(self):
-        self.docker = docker.from_env()
-
-    def run(self):
-        self.check_corpora()
-        self.check_jobs()
-        db.session.commit()