use daemonize and attach to foreground

.docker-compose/Dockerfile

@@ -11,11 +11,11 @@ RUN cd Cbc-2.9.8 && \
     make install
 RUN python -m pip install pydantic
 RUN python -m pip install pySqsListener
+RUN python -m pip install daemonize
 
 # Bundle app source
 COPY . /app
 
 WORKDIR /app/app
 
-# CMD [ "python", "main.py" ]
-CMD tail -f /dev/null
+CMD [ "python", "main.py" ]

Dockerfile

@@ -11,11 +11,11 @@ RUN cd Cbc-2.9.8 && \
     make install
 RUN python -m pip install pydantic
 RUN python -m pip install pySqsListener
+RUN python -m pip install daemonize
 
 # Bundle app source
 COPY . /app
 
 WORKDIR /app/app
 
-# CMD [ "python", "main.py" ]
-CMD tail -f /dev/null
+CMD [ "python", "main.py" ]

app/main.py

@@ -1,14 +1,10 @@
-import os
-import sys
-import json
-import time
+import os, sys, json, time
 
 from services.loft_service import LoftService
 from helpers import aws_helper
+
+from daemonize import Daemonize
 from sqs_listener import SqsListener
-from sqs_listener.daemon import Daemon
-
-
 
 class ServiceListener(SqsListener):
   def handle_message(self, body, attributes, messages_attributes):
@@ -18,34 +14,20 @@ class ServiceListener(SqsListener):
     service.process()
     # log the things
 
-class ServiceDaemon(Daemon):
-  def run(self):
-    print("Starting Solver Service (v0.3.2)...")
-    print("Initializing listener")
-    listener = ServiceListener(
-      'measure-development-solver-ingest',
-      region_name=os.environ['SOLVER_AWS_REGION'],
-      aws_access_key=os.environ['SOLVER_AWS_ACCESS_KEY_ID'],
-      aws_secret_key=os.environ['SOLVER_AWS_SECRET_ACCESS_KEY'],
-      queue_url=os.environ['SOLVER_SQS_INGEST_QUEUE']
-    )
-    listener.listen()
+def main():
+  print("Starting Solver Service (v0.3.2)...")
+  print("Initializing listener")
+  listener = ServiceListener(
+    'measure-development-solver-ingest',
+    region_name=os.environ['SOLVER_AWS_REGION'],
+    aws_access_key=os.environ['SOLVER_AWS_ACCESS_KEY_ID'],
+    aws_secret_key=os.environ['SOLVER_AWS_SECRET_ACCESS_KEY'],
+    queue_url=os.environ['SOLVER_SQS_INGEST_QUEUE']
+  )
+  listener.listen()
 
-if __name__ == "__main__":
-  daemon = ServiceDaemon('/var/run/sqs_daemon.pid',stdout='/app/logs/stdout', stderr='/app/logs/stderr', stdin='/app/logs/stdin')
-  if len(sys.argv) == 2:
-    if 'start' == sys.argv[1]:
-      print("Starting listener daemon")
-      daemon.start()
-    elif 'stop' == sys.argv[1]:
-      print("Attempting to stop the daemon")
-      daemon.stop()
-    elif 'restart' == sys.argv[1]:
-      daemon.restart()
-    else:
-      print("Unknown command")
-      sys.exit(2)
-    sys.exit(0)
-  else:
-    print("usage: %s start|stop|restart" % sys.argv[0])
-    sys.exit(2)
+if __name__ == '__main__':
+  myname=os.path.basename(sys.argv[0])
+  pidfile='/tmp/%s' % myname       # any name
+  daemon = Daemonize(app=myname,pid=pidfile, action=main, foreground=True)
+  daemon.start()