Add foreground option

The current options stated as 'do not run as a daemon' is actually
'run in debug mode in foreground'. When running in container we
actually want an option for running normally in foreground. Thus add a
new option -f for foreground operations and change the docker imaged
to use this accordingly.

Change-Id: I16173a73dbfb79dc2c2b05c2002ac41e20a48225

Dockerfile

@@ -60,16 +60,16 @@ COPY --from=builder /usr/local/lib/zuul/ /usr/local/lib/zuul
 COPY --from=builder /tmp/openshift-install/kubectl /usr/local/bin/kubectl
 COPY --from=builder /tmp/openshift-install/oc /usr/local/bin/oc
 
-CMD ["/usr/local/bin/zuul-executor"]
+CMD ["/usr/local/bin/zuul-executor", "-f"]
 
 FROM zuul as zuul-fingergw
-CMD ["/usr/local/bin/zuul-fingergw"]
+CMD ["/usr/local/bin/zuul-fingergw", "-f"]
 
 FROM zuul as zuul-merger
-CMD ["/usr/local/bin/zuul-merger"]
+CMD ["/usr/local/bin/zuul-merger", "-f"]
 
 FROM zuul as zuul-scheduler
-CMD ["/usr/local/bin/zuul-scheduler"]
+CMD ["/usr/local/bin/zuul-scheduler", "-f"]
 
 FROM zuul as zuul-web
-CMD ["/usr/local/bin/zuul-web"]
+CMD ["/usr/local/bin/zuul-web", "-f"]

doc/source/examples/docker-compose.yaml

@@ -51,7 +51,7 @@ services:
       - https_proxy
       - no_proxy=${no_proxy},gerrit
       - ZUUL_MYSQL_PASSWORD=secret
-    command: "sh -c '/var/playbooks/wait-to-start.sh && zuul-scheduler -d'"
+    command: "sh -c '/var/playbooks/wait-to-start.sh && zuul-scheduler -f'"
     # FIXME: The scheduler has no ansible anymore so use the executor image.
     #        This needs to be changes such that ansible is not required for startup.
     image: zuul/zuul-scheduler
@@ -60,7 +60,7 @@ services:
       - "./playbooks/:/var/playbooks/:z"
       - "sshkey:/var/ssh:z"
   web:
-    command: "sh -c '/var/playbooks/wait-to-start-gearman.sh && zuul-web -d'"
+    command: "sh -c '/var/playbooks/wait-to-start-gearman.sh && zuul-web -f'"
     depends_on:
       - scheduler
       - mysql
@@ -79,7 +79,6 @@ services:
       - https_proxy
       - no_proxy=${no_proxy},gerrit,scheduler
       - ZUUL_MYSQL_PASSWORD=secret
-    command: "zuul-executor -d"
     depends_on:
       - scheduler
     image: zuul/zuul-executor
@@ -99,7 +98,6 @@ services:
     volumes:
       - "nodessh:/root/.ssh:z"
   launcher:
-    command: "nodepool-launcher -d"
     depends_on:
       - zk
     image: zuul/nodepool-launcher

zuul/cmd/__init__.py

@@ -120,6 +120,14 @@ class ZuulApp(object):
     def parseArguments(self, args=None):
         parser = self.createParser()
         self.args = parser.parse_args(args)
+
+        # The arguments debug and foreground both lead to nodaemon mode so
+        # set nodaemon if one of them is set.
+        if ((hasattr(self.args, 'debug') and self.args.debug) or
+                (hasattr(self.args, 'foreground') and self.args.foreground)):
+            self.args.nodaemon = True
+        else:
+            self.args.nodaemon = False
         return parser
 
     def readConfig(self):
@@ -148,12 +156,13 @@ class ZuulApp(object):
             # config, leave the config set to emit to stdout.
             if hasattr(self.args, 'nodaemon') and self.args.nodaemon:
                 logging_config = logconfig.ServerLoggingConfig()
-                logging_config.setDebug()
             else:
                 # Setting a server value updates the defaults to use
                 # WatchedFileHandler on /var/log/zuul/{server}-debug.log
                 # and /var/log/zuul/{server}.log
                 logging_config = logconfig.ServerLoggingConfig(server=section)
+            if hasattr(self.args, 'debug') and self.args.debug:
+                logging_config.setDebug()
         logging_config.apply()
 
     def configure_connections(self, source_only=False, include_drivers=None):
@@ -164,8 +173,10 @@ class ZuulApp(object):
 class ZuulDaemonApp(ZuulApp, metaclass=abc.ABCMeta):
     def createParser(self):
         parser = super(ZuulDaemonApp, self).createParser()
-        parser.add_argument('-d', dest='nodaemon', action='store_true',
-                            help='do not run as a daemon')
+        parser.add_argument('-d', dest='debug', action='store_true',
+                            help='run in foreground with debug log')
+        parser.add_argument('-f', dest='foreground', action='store_true',
+                            help='run in foreground with info log')
         return parser
 
     def getPidFile(self):