bitbake: prserv/serv.py: Fix logging in daemon mode

In deamon mode we need to ensure the logging module is sending log data to the
log file. These changes ensure this happens correctly.

(Bitbake rev: bb53b47710ca4579e20284668cb354f734c3d502)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/prserv/serv.py

@@ -86,7 +86,8 @@ class PRServer(SimpleXMLRPCServer):
     def work_forever(self,):
         self.quit = False
         self.timeout = 0.5
-        logger.info("PRServer: started! DBfile: %s, IP: %s, PORT: %s, PID: %s" %
+
+        logger.info("Started PRServer with DBfile: %s, IP: %s, PORT: %s, PID: %s" %
                      (self.dbfile, self.host, self.port, str(os.getpid())))
 
         while not self.quit:
@@ -97,7 +98,10 @@ class PRServer(SimpleXMLRPCServer):
         return
 
     def start(self):
-        self.daemonize()
+        pid = self.daemonize()
+        # Ensure both the parent sees this and the child from the work_forever log entry above
+        logger.info("Started PRServer with DBfile: %s, IP: %s, PORT: %s, PID: %s" %
+                     (self.dbfile, self.host, self.port, str(pid)))
 
     def delpid(self):
         os.remove(self.pidfile)
@@ -111,7 +115,7 @@ class PRServer(SimpleXMLRPCServer):
             if pid > 0:
                 os.waitpid(pid, 0)
                 #parent return instead of exit to give control 
-                return
+                return pid
         except OSError as e:
             raise Exception("%s [%d]" % (e.strerror, e.errno))
 
@@ -139,14 +143,21 @@ class PRServer(SimpleXMLRPCServer):
         os.dup2(so.fileno(),sys.stdout.fileno())
         os.dup2(se.fileno(),sys.stderr.fileno())
 
+        # Ensure logging makes it to the logfile
+        streamhandler = logging.StreamHandler()
+        streamhandler.setLevel(logging.DEBUG)
+        formatter = bb.msg.BBLogFormatter("%(levelname)s: %(message)s")
+        streamhandler.setFormatter(formatter)
+        logger.addHandler(streamhandler)
+
         # write pidfile
-        atexit.register(self.delpid)
         pid = str(os.getpid()) 
         pf = file(self.pidfile, 'w')
         pf.write("%s\n" % pid)
         pf.close()
 
         self.work_forever()
+        self.delpid
         os._exit(0)
 
 class PRServSingleton():
@@ -179,6 +190,7 @@ class PRServerConnection():
         import socket
         socket.setdefaulttimeout(2)
         try:
+            logger.info("Terminating PRServer...")
             self.connection.quit()
         except Exception as exc:
             sys.stderr.write("%s\n" % str(exc))