Manually generate the default config yaml, remove most of the commandline arguments for synapse anticipating that people will use the yaml instead. Simpify implementing config options by not requiring the classes to hit the super class

synapse/config/server.py

@@ -17,64 +17,85 @@ from ._base import Config
 
 
 class ServerConfig(Config):
-    def __init__(self, args):
-        super(ServerConfig, self).__init__(args)
-        self.server_name = args.server_name
-        self.bind_port = args.bind_port
-        self.bind_host = args.bind_host
-        self.unsecure_port = args.unsecure_port
-        self.daemonize = args.daemonize
-        self.pid_file = self.abspath(args.pid_file)
-        self.web_client = args.web_client
-        self.manhole = args.manhole
-        self.soft_file_limit = args.soft_file_limit
 
-        if not args.content_addr:
-            host = args.server_name
+    def read_config(self, config):
+        self.server_name = config["server_name"]
+        self.bind_port = config["bind_port"]
+        self.bind_host = config["bind_host"]
+        self.unsecure_port = config["unsecure_port"]
+        self.manhole = config["manhole"]
+        self.pid_file = self.abspath(config.get("pid_file"))
+        self.web_client = config["web_client"]
+        self.soft_file_limit = config["soft_file_limit"]
+
+        # Attempt to guess the content_addr for the v0 content repostitory
+        content_addr = config.get("content_addr")
+        if not content_addr:
+            host = self.server_name
             if ':' not in host:
-                host = "%s:%d" % (host, args.unsecure_port)
+                host = "%s:%d" % (host, self.unsecure_port)
             else:
                 host = host.split(':')[0]
-                host = "%s:%d" % (host, args.unsecure_port)
-            args.content_addr = "http://%s" % (host,)
+                host = "%s:%d" % (host, self.unsecure_port)
+            content_addr = "http://%s" % (host,)
 
-        self.content_addr = args.content_addr
+        self.content_addr = content_addr
 
-    @classmethod
-    def add_arguments(cls, parser):
-        super(ServerConfig, cls).add_arguments(parser)
+    def default_config(self, config_dir_path, server_name):
+        if ":" in server_name:
+            bind_port = int(server_name.split(":")[1])
+            unsecure_port = bind_port - 400
+        else:
+            bind_port = 8448
+            unsecure_port = 8008
+
+        pid_file = self.abspath("homeserver.pid")
+        return """\
+        ## Server ##
+
+        # The domain name of the server, with optional explicit port.
+        # This is used by remote servers to connect to this server,
+        # e.g. matrix.org, localhost:8080, etc.
+        server_name: "%(server_name)s"
+
+        # The port to listen for HTTPS requests on.
+        # For when matrix traffic is sent directly to synapse.
+        bind_port: %(bind_port)s
+
+        # The port to listen for HTTP requests on.
+        # For when matrix traffic passes through loadbalancer that unwraps TLS.
+        unsecure_port: %(unsecure_port)s
+
+        # Local interface to listen on.
+        # The empty string will cause synapse to listen on all interfaces.
+        bind_host: ""
+
+        # When running as a daemon, the file to store the pid in
+        pid_file: %(pid_file)s
+
+        # Whether to serve a web client from the HTTP/HTTPS root resource.
+        web_client: True
+
+        # Set the soft limit on the number of file descriptors synapse can use
+        # Zero is used to indicate synapse should set the soft limit to the
+        # hard limit.
+        soft_file_limit: 0
+
+        # Turn on the twisted telnet manhole service on localhost on the given
+        # port.
+        manhole: ~
+        """ % locals()
+
+    def read_arguments(self, args):
+        if args.manhole is not None:
+            self.manhole = args.manhole
+        self.daemonize = args.daemonize
+
+    def add_arguments(self, parser):
         server_group = parser.add_argument_group("server")
-        server_group.add_argument(
-            "-H", "--server-name", default="localhost",
-            help="The domain name of the server, with optional explicit port. "
-                 "This is used by remote servers to connect to this server, "
-                 "e.g. matrix.org, localhost:8080, etc."
-        )
-        server_group.add_argument("-p", "--bind-port", metavar="PORT",
-                                  type=int, help="https port to listen on",
-                                  default=8448)
-        server_group.add_argument("--unsecure-port", metavar="PORT",
-                                  type=int, help="http port to listen on",
-                                  default=8008)
-        server_group.add_argument("--bind-host", default="",
-                                  help="Local interface to listen on")
         server_group.add_argument("-D", "--daemonize", action='store_true',
                                   help="Daemonize the home server")
-        server_group.add_argument('--pid-file', default="homeserver.pid",
-                                  help="When running as a daemon, the file to"
-                                  " store the pid in")
-        server_group.add_argument('--web_client', default=True, type=bool,
-                                  help="Whether or not to serve a web client")
         server_group.add_argument("--manhole", metavar="PORT", dest="manhole",
                                   type=int,
                                   help="Turn on the twisted telnet manhole"
                                   " service on the given port.")
-        server_group.add_argument("--content-addr", default=None,
-                                  help="The host and scheme to use for the "
-                                  "content repository")
-        server_group.add_argument("--soft-file-limit", type=int, default=0,
-                                  help="Set the soft limit on the number of "
-                                       "file descriptors synapse can use. "
-                                       "Zero is used to indicate synapse "
-                                       "should set the soft limit to the hard"
-                                       "limit.")