Attempt to make default config more consistent

The general idea here is that config examples should just have a hash and no
extraneous whitespace, both to make it easier for people who don't understand
yaml, and to make the examples stand out from the comments.

synapse/config/api.py

@@ -33,6 +33,7 @@ class ApiConfig(Config):
         ## API Configuration ##
 
         # A list of event types that will be included in the room_invite_state
+        #
         room_invite_state_types:
             - "{JoinRules}"
             - "{CanonicalAlias}"

synapse/config/appservice.py

@@ -38,10 +38,12 @@ class AppServiceConfig(Config):
     def default_config(cls, **kwargs):
         return """\
         # A list of application service config file to use
+        #
         app_service_config_files: []
 
         # Whether or not to track application service IP addresses. Implicitly
         # enables MAU tracking for application service users.
+        #
         track_appservice_user_ips: False
         """
 

synapse/config/captcha.py

@@ -30,14 +30,17 @@ class CaptchaConfig(Config):
         # See docs/CAPTCHA_SETUP for full details of configuring this.
 
         # This Home Server's ReCAPTCHA public key.
+        #
         recaptcha_public_key: "YOUR_PUBLIC_KEY"
 
         # This Home Server's ReCAPTCHA private key.
+        #
         recaptcha_private_key: "YOUR_PRIVATE_KEY"
 
         # Enables ReCaptcha checks when registering, preventing signup
         # unless a captcha is answered. Requires a valid ReCaptcha
         # public/private key.
+        #
         enable_registration_captcha: False
 
         # A secret key used to bypass the captcha test entirely.

synapse/config/cas.py

@@ -38,6 +38,7 @@ class CasConfig(Config):
     def default_config(self, config_dir_path, server_name, **kwargs):
         return """
         # Enable CAS for registration and login.
+        #
         #cas_config:
         #   enabled: true
         #   server_url: "https://cas-server.com"

synapse/config/groups.py

@@ -24,9 +24,11 @@ class GroupsConfig(Config):
     def default_config(self, **kwargs):
         return """\
         # Whether to allow non server admins to create groups on this server
+        #
         enable_group_creation: false
 
         # If enabled, non server admins can only create groups with local parts
         # starting with this prefix
+        #
         #group_creation_prefix: "unofficial/"
         """

synapse/config/key.py

@@ -40,7 +40,7 @@ class KeyConfig(Config):
     def read_config(self, config):
         self.signing_key = self.read_signing_key(config["signing_key_path"])
         self.old_signing_keys = self.read_old_signing_keys(
-            config["old_signing_keys"]
+            config.get("old_signing_keys", {})
         )
         self.key_refresh_interval = self.parse_duration(
             config["key_refresh_interval"]
@@ -83,24 +83,29 @@ class KeyConfig(Config):
         # a secret which is used to sign access tokens. If none is specified,
         # the registration_shared_secret is used, if one is given; otherwise,
         # a secret key is derived from the signing key.
+        #
         %(macaroon_secret_key)s
 
         # Used to enable access token expiration.
+        #
         expire_access_token: False
 
         # a secret which is used to calculate HMACs for form values, to stop
         # falsification of values. Must be specified for the User Consent
         # forms to work.
+        #
         %(form_secret)s
 
         ## Signing Keys ##
 
         # Path to the signing key to sign messages with
+        #
         signing_key_path: "%(base_key_name)s.signing.key"
 
         # The keys that the server used to sign messages with but won't use
         # to sign new messages. E.g. it has lost its private key
-        old_signing_keys: {}
+        #
+        #old_signing_keys:
         #  "ed25519:auto":
         #    # Base64 encoded public key
         #    key: "The public part of your old signing key."
@@ -111,9 +116,11 @@ class KeyConfig(Config):
         # Used to set the valid_until_ts in /key/v2 APIs.
         # Determines how quickly servers will query to check which keys
         # are still valid.
+        #
         key_refresh_interval: "1d" # 1 Day.
 
         # The trusted servers to download signing keys from.
+        #
         perspectives:
           servers:
             "matrix.org":

synapse/config/logger.py

@@ -83,6 +83,7 @@ class LoggingConfig(Config):
         log_config = os.path.join(config_dir_path, server_name + ".log.config")
         return """
         # A yaml python logging config file
+        #
         log_config: "%(log_config)s"
         """ % locals()
 

synapse/config/metrics.py

@@ -47,6 +47,7 @@ class MetricsConfig(Config):
         ## Metrics ###
 
         # Enable collection and rendering of performance metrics
+        #
         enable_metrics: False
 
         # Enable sentry integration
@@ -55,6 +56,7 @@ class MetricsConfig(Config):
         # this option the sentry server may therefore receive sensitive
         # information, and it in turn may then diseminate sensitive information
         # through insecure notification channels if so configured.
+        #
         #sentry:
         #    dsn: "..."
         """

synapse/config/password.py

@@ -28,6 +28,7 @@ class PasswordConfig(Config):
     def default_config(self, config_dir_path, server_name, **kwargs):
         return """
         # Enable password for login.
+        #
         password_config:
            enabled: true
            # Uncomment and change to a secret random string for extra security.

synapse/config/push.py

@@ -51,7 +51,7 @@ class PushConfig(Config):
         # notification request includes the content of the event (other details
         # like the sender are still included). For `event_id_only` push, it
         # has no effect.
-
+        #
         # For modern android devices the notification content will still appear
         # because it is loaded by the app. iPhone, however will send a
         # notification saying only that a message arrived and who it came from.

synapse/config/ratelimiting.py

@@ -32,27 +32,34 @@ class RatelimitConfig(Config):
         ## Ratelimiting ##
 
         # Number of messages a client can send per second
+        #
         rc_messages_per_second: 0.2
 
         # Number of message a client can send before being throttled
+        #
         rc_message_burst_count: 10.0
 
         # The federation window size in milliseconds
+        #
         federation_rc_window_size: 1000
 
         # The number of federation requests from a single server in a window
         # before the server will delay processing the request.
+        #
         federation_rc_sleep_limit: 10
 
         # The duration in milliseconds to delay processing events from
         # remote servers by if they go over the sleep limit.
+        #
         federation_rc_sleep_delay: 500
 
         # The maximum number of concurrent federation requests allowed
         # from a single server
+        #
         federation_rc_reject_limit: 50
 
         # The number of federation requests to concurrently process from a
         # single server
+        #
         federation_rc_concurrent: 3
         """

synapse/config/registration.py

@@ -77,7 +77,7 @@ class RegistrationConfig(Config):
         # Explicitly disable asking for MSISDNs from the registration
         # flow (overrides registrations_require_3pid if MSISDNs are set as required)
         #
-        # disable_msisdn_registration = True
+        #disable_msisdn_registration: True
 
         # Mandate that users are only allowed to associate certain formats of
         # 3PIDs with accounts on this server.
@@ -92,6 +92,7 @@ class RegistrationConfig(Config):
 
         # If set, allows registration by anyone who also has the shared
         # secret, even if registration is otherwise disabled.
+        #
         %(registration_shared_secret)s
 
         # Set the number of bcrypt rounds used to generate password hash.
@@ -99,11 +100,13 @@ class RegistrationConfig(Config):
         # The default number is 12 (which equates to 2^12 rounds).
         # N.B. that increasing this will exponentially increase the time required
         # to register or login - e.g. 24 => 2^24 rounds which will take >20 mins.
+        #
         bcrypt_rounds: 12
 
         # Allows users to register as guests without a password/email/etc, and
         # participate in rooms hosted on this server which have been made
         # accessible to anonymous users.
+        #
         allow_guest_access: False
 
         # The identity server which we suggest that clients should use when users log
@@ -119,12 +122,14 @@ class RegistrationConfig(Config):
         #
         # Also defines the ID server which will be called when an account is
         # deactivated (one will be picked arbitrarily).
+        #
         trusted_third_party_id_servers:
           - matrix.org
           - vector.im
 
         # Users who register on this homeserver will automatically be joined
         # to these rooms
+        #
         #auto_join_rooms:
         #  - "#example:example.com"
 
@@ -133,6 +138,7 @@ class RegistrationConfig(Config):
         # homeserver registers.
         # Setting to false means that if the rooms are not manually created,
         # users cannot be auto-joined since they do not exist.
+        #
         autocreate_auto_join_rooms: true
         """ % locals()
 

synapse/config/repository.py

@@ -180,10 +180,12 @@ class ContentRepositoryConfig(Config):
         uploads_path = os.path.join(data_dir_path, "uploads")
         return r"""
         # Directory where uploaded images and attachments are stored.
+        #
         media_store_path: "%(media_store)s"
 
         # Media storage providers allow media to be stored in different
         # locations.
+        #
         #media_storage_providers:
         #  - module: file_system
         #    # Whether to write new local files.
@@ -197,12 +199,15 @@ class ContentRepositoryConfig(Config):
         #       directory: /mnt/some/other/directory
 
         # Directory where in-progress uploads are stored.
+        #
         uploads_path: "%(uploads_path)s"
 
         # The largest allowed upload size in bytes
+        #
         max_upload_size: "10M"
 
         # Maximum number of pixels that will be thumbnailed
+        #
         max_image_pixels: "32M"
 
         # Whether to generate new thumbnails on the fly to precisely match
@@ -210,9 +215,11 @@ class ContentRepositoryConfig(Config):
         # a new resolution is requested by the client the server will
         # generate a new thumbnail. If false the server will pick a thumbnail
         # from a precalculated list.
+        #
         dynamic_thumbnails: false
 
-        # List of thumbnail to precalculate when an image is uploaded.
+        # List of thumbnails to precalculate when an image is uploaded.
+        #
         thumbnail_sizes:
         - width: 32
           height: 32
@@ -233,6 +240,7 @@ class ContentRepositoryConfig(Config):
         # Is the preview URL API enabled?  If enabled, you *must* specify
         # an explicit url_preview_ip_range_blacklist of IPs that the spider is
         # denied from accessing.
+        #
         url_preview_enabled: False
 
         # List of IP address CIDR ranges that the URL preview spider is denied
@@ -300,5 +308,4 @@ class ContentRepositoryConfig(Config):
         # The largest allowed URL preview spidering size in bytes
         max_spider_size: "10M"
 
-
         """ % locals()

synapse/config/saml2_config.py

@@ -67,15 +67,14 @@ class SAML2Config(Config):
         return """
         # Enable SAML2 for registration and login. Uses pysaml2.
         #
+        # `sp_config` is the configuration for the pysaml2 Service Provider.
+        # See pysaml2 docs for format of config.
+        #
+        # Default values will be used for the 'entityid' and 'service' settings,
+        # so it is not normally necessary to specify them unless you need to
+        # override them.
+        #
         #saml2_config:
-        #
-        #   # The following is the configuration for the pysaml2 Service Provider.
-        #   # See pysaml2 docs for format of config.
-        #   #
-        #   # Default values will be used for the 'entityid' and 'service' settings,
-        #   # so it is not normally necessary to specify them unless you need to
-        #   # override them.
-        #
         #  sp_config:
         #    # point this to the IdP's metadata. You can use either a local file or
         #    # (preferably) a URL.
@@ -84,7 +83,7 @@ class SAML2Config(Config):
         #      remote:
         #        - url: https://our_idp/metadata.xml
         #
-        #     # The following is just used to generate our metadata xml, and you
+        #    # The rest of sp_config is just used to generate our metadata xml, and you
         #    # may well not need it, depending on your setup. Alternatively you
         #    # may need a whole lot more detail - see the pysaml2 docs!
         #
@@ -106,5 +105,5 @@ class SAML2Config(Config):
         #  # Instead of putting the config inline as above, you can specify a
         #  # separate pysaml2 configuration file:
         #  #
-        #   # config_path: "%(config_dir_path)s/sp_conf.py"
+        #  config_path: "%(config_dir_path)s/sp_conf.py"
         """ % {"config_dir_path": config_dir_path}

synapse/config/server.py

@@ -298,6 +298,7 @@ class ServerConfig(Config):
         # enter into the 'custom HS URL' field on their client. If you
         # use synapse with a reverse proxy, this should be the URL to reach
         # synapse via the proxy.
+        #
         #public_baseurl: https://example.com/
 
         # Set the soft limit on the number of file descriptors synapse can use
@@ -309,16 +310,26 @@ class ServerConfig(Config):
         use_presence: true
 
         # The GC threshold parameters to pass to `gc.set_threshold`, if defined
+        #
         #gc_thresholds: [700, 10, 10]
 
         # Set the limit on the returned events in the timeline in the get
         # and sync operations. The default value is -1, means no upper limit.
+        #
         #filter_timeline_limit: 5000
 
         # Whether room invites to users on this server should be blocked
         # (except those sent by local server admins). The default is False.
+        #
         #block_non_admin_invites: True
 
+        # Room searching
+        #
+        # If disabled, new messages will not be indexed for searching and users
+        # will receive errors when searching for messages. Defaults to enabled.
+        #
+        #enable_search: false
+
         # Restrict federation to the following whitelist of domains.
         # N.B. we recommend also firewalling your federation listener to limit
         # inbound federation traffic as early as possible, rather than relying
@@ -428,45 +439,42 @@ class ServerConfig(Config):
 
           # Turn on the twisted ssh manhole service on localhost on the given
           # port.
+          #
           #- port: 9000
           #  bind_addresses: ['::1', '127.0.0.1']
           #  type: manhole
 
-        # Homeserver blocking
-        #
+
+        ## Homeserver blocking ##
+
         # How to reach the server admin, used in ResourceLimitError
-        # admin_contact: 'mailto:admin@server.com'
         #
-        # Global block config
+        #admin_contact: 'mailto:admin@server.com'
+
+        # Global blocking
         #
         #hs_disabled: False
         #hs_disabled_message: 'Human readable reason for why the HS is blocked'
         #hs_disabled_limit_type: 'error code(str), to help clients decode reason'
-        #
+
         # Monthly Active User Blocking
         #
-        # Enables monthly active user checking
         #limit_usage_by_mau: False
         #max_mau_value: 50
         #mau_trial_days: 2
-        #
+
         # If enabled, the metrics for the number of monthly active users will
         # be populated, however no one will be limited. If limit_usage_by_mau
         # is true, this is implied to be true.
-        # mau_stats_only: False
         #
+        #mau_stats_only: False
+
         # Sometimes the server admin will want to ensure certain accounts are
         # never blocked by mau checking. These accounts are specified here.
         #
         #mau_limit_reserved_threepids:
         #  - medium: 'email'
         #    address: 'reserved_user@example.com'
-        #
-        # Room searching
-        #
-        # If disabled, new messages will not be indexed for searching and users
-        # will receive errors when searching for messages. Defaults to enabled.
-        # enable_search: true
         """ % locals()
 
     def read_arguments(self, args):

synapse/config/tls.py

@@ -180,6 +180,7 @@ class TlsConfig(Config):
         #tls_certificate_path: "%(tls_certificate_path)s"
 
         # PEM-encoded private key for TLS
+        #
         #tls_private_key_path: "%(tls_private_key_path)s"
 
         # ACME support: This will configure Synapse to request a valid TLS certificate
@@ -269,7 +270,6 @@ class TlsConfig(Config):
         #   openssl x509 -outform DER | openssl sha256 -binary | base64 | tr -d '='
         # or by checking matrix.org/federationtester/api/report?server_name=$host
         #
-        tls_fingerprints: []
         #tls_fingerprints: [{"sha256": "<base64_encoded_sha256_fingerprint>"}]
 
         """

synapse/config/voip.py

@@ -27,20 +27,24 @@ class VoipConfig(Config):
 
     def default_config(self, **kwargs):
         return """\
-        ## Turn ##
+        ## TURN ##
 
         # The public URIs of the TURN server to give to clients
+        #
         #turn_uris: []
 
         # The shared secret used to compute passwords for the TURN server
+        #
         #turn_shared_secret: "YOUR_SHARED_SECRET"
 
         # The Username and password if the TURN server needs them and
         # does not use a token
+        #
         #turn_username: "TURNSERVER_USERNAME"
         #turn_password: "TURNSERVER_PASSWORD"
 
         # How long generated TURN credentials last
+        #
         turn_user_lifetime: "1h"
 
         # Whether guests should be allowed to use the TURN server.
@@ -48,5 +52,6 @@ class VoipConfig(Config):
         # However, it does introduce a slight security risk as it allows users to
         # connect to arbitrary endpoints without having first signed up for a
         # valid account (e.g. by passing a CAPTCHA).
+        #
         turn_allow_guests: True
         """