1. Raise CmdctlException instead of exiting when port is used by other...

1. Raise CmdctlException instead of exiting when port is used by other processes. 2. Make error message be more accurate.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac277@2521 e5f2f494-b856-4b98-b285-d166d9295462

src/bin/cmdctl/TODO

@@ -3,4 +3,5 @@
 . Add check for the content of key/certificate file
   (when cmdctl starts or is configured by bindctl).
 . Use only one msgq/session to communicate with other modules?
+. Add more test cases.
 

src/bin/cmdctl/cmdctl.py.in

@@ -444,8 +444,7 @@ class SecureHTTPServer(socketserver.ThreadingMixIn, http.server.HTTPServer):
         try:
             http.server.HTTPServer.__init__(self, server_address, RequestHandlerClass)
         except socket.error as err:
-            sys.stderr.write("[b10-cmdctl] Error creating b10-cmdctl, because: %s \n" % str(err))
-            sys.exit(0)
+            raise CmdctlException("Error creating server, because: %s \n" % str(err))
 
         self.user_sessions = {}
         self.idle_timeout = idle_timeout
@@ -598,11 +597,13 @@ if __name__ == '__main__':
     (options, args) = parser.parse_args()
     try:
         run(options.addr, options.port, options.idle_timeout, options.verbose)
-    except isc.cc.SessionError as se:
+    except isc.cc.SessionError as err:
         sys.stderr.write("[b10-cmdctl] Error creating b10-cmdctl, "
                          "is the command channel daemon running?\n")        
     except KeyboardInterrupt:
         sys.stderr.write("[b10-cmdctl] exit from Cmdctl\n")
+    except CmdctlException as err:
+        sys.stderr.write("[b10-cmdctl] " + str(err) + "\n")
 
     if httpd:
         httpd.shutdown()

src/bin/cmdctl/tests/cmdctl_test.py

@@ -397,13 +397,13 @@ class TestSecureHTTPServer(unittest.TestCase):
     def test_addr_in_use(self):
         server_one = None
         try:
-            server_one = SecureHTTPServer(('localhost', 8080),
+            server_one = SecureHTTPServer(('localhost', 53531),
                                         MySecureHTTPRequestHandler,
                                         MyCommandControl)
-        except SystemExit:
+        except CmdctlException:
             pass
         else:
-            self.assertRaises(SystemExit, SecureHTTPServer, ('localhost', 8080), 
+            self.assertRaises(CmdctlException, SecureHTTPServer, ('localhost', 53531), 
                               MySecureHTTPRequestHandler, MyCommandControl)
         if server_one:
             server_one.server_close()