Event relations (#2790)

This adds support for tracking `m.relates_to`, as well as adding support
for the various `/room/{roomID}/relations/...` endpoints to the CS API.

3 files changed, 68 insertions, 43 deletions

diff --git a/docs/caddy/polylith/Caddyfile b/docs/caddy/polylith/Caddyfile
index 906097e4..8aeb9317 100644
--- a/docs/caddy/polylith/Caddyfile
+++ b/docs/caddy/polylith/Caddyfile
@@ -1,66 +1,85 @@
-# Sample Caddyfile for using Caddy in front of Dendrite.
+# Sample Caddyfile for using Caddy in front of Dendrite
+
 #
-# Customize email address and domain names.
-# Optional settings commented out.
+
+# Customize email address and domain names
+
+# Optional settings commented out
+
 #
-# BE SURE YOUR DOMAINS ARE POINTED AT YOUR SERVER FIRST.
-# Documentation: https://caddyserver.com/docs/
+
+# BE SURE YOUR DOMAINS ARE POINTED AT YOUR SERVER FIRST
+
+# Documentation: <https://caddyserver.com/docs/>
+
 #
+
 # Bonus tip: If your IP address changes, use Caddy's
+
 # dynamic DNS plugin to update your DNS records to
-# point to your new IP automatically:
-# https://github.com/mholt/caddy-dynamicdns
-#
 
+# point to your new IP automatically
+
+# <https://github.com/mholt/caddy-dynamicdns>
+
+#
 
 # Global options block
+
 {
-	# In case there is a problem with your certificates.
-	# email example@example.com
+ # In case there is a problem with your certificates.
+ # email example@example.com
 
-	# Turn off the admin endpoint if you don't need graceful config
-	# changes and/or are running untrusted code on your machine.
-	# admin off
+ # Turn off the admin endpoint if you don't need graceful config
+ # changes and/or are running untrusted code on your machine.
+ # admin off
 
-	# Enable this if your clients don't send ServerName in TLS handshakes.
-	# default_sni example.com
+ # Enable this if your clients don't send ServerName in TLS handshakes.
+ # default_sni example.com
 
-	# Enable debug mode for verbose logging.
-	# debug
+ # Enable debug mode for verbose logging.
+ # debug
 
-	# Use Let's Encrypt's staging endpoint for testing.
-	# acme_ca https://acme-staging-v02.api.letsencrypt.org/directory
+ # Use Let's Encrypt's staging endpoint for testing.
+ # acme_ca https://acme-staging-v02.api.letsencrypt.org/directory
 
-	# If you're port-forwarding HTTP/HTTPS ports from 80/443 to something
-	# else, enable these and put the alternate port numbers here.
-	# http_port  8080
-	# https_port 8443
+ # If you're port-forwarding HTTP/HTTPS ports from 80/443 to something
+ # else, enable these and put the alternate port numbers here.
+ # http_port  8080
+ # https_port 8443
 }
 
 # The server name of your matrix homeserver. This example shows
-# "well-known delegation" from the registered domain to a subdomain,
+
+# "well-known delegation" from the registered domain to a subdomain
+
 # which is only needed if your server_name doesn't match your Matrix
+
 # homeserver URL (i.e. you can show users a vanity domain that looks
+
 # nice and is easy to remember but still have your Matrix server on
-# its own subdomain or hosted service).
+
+# its own subdomain or hosted service)
+
 example.com {
-	header /.well-known/matrix/* Content-Type application/json
-	header /.well-known/matrix/* Access-Control-Allow-Origin *
-	respond /.well-known/matrix/server `{"m.server": "matrix.example.com:443"}`
-	respond /.well-known/matrix/client `{"m.homeserver": {"base_url": "https://matrix.example.com"}}`
+ header /.well-known/matrix/*Content-Type application/json
+ header /.well-known/matrix/* Access-Control-Allow-Origin *
+ respond /.well-known/matrix/server `{"m.server": "matrix.example.com:443"}`
+ respond /.well-known/matrix/client `{"m.homeserver": {"base_url": "https://matrix.example.com"}}`
 }
 
-# The actual domain name whereby your Matrix server is accessed.
+# The actual domain name whereby your Matrix server is accessed
+
 matrix.example.com {
-	# Change the end of each reverse_proxy line to the correct
-	# address for your various services.
-	@sync_api {
-		path_regexp /_matrix/client/.*?/(sync|user/.*?/filter/?.*|keys/changes|rooms/.*?/(messages|context/.*?|event/.*?))$
-	}
-	reverse_proxy @sync_api sync_api:8073
-
-	reverse_proxy /_matrix/client* client_api:8071
-	reverse_proxy /_matrix/federation* federation_api:8071
-	reverse_proxy /_matrix/key* federation_api:8071
-	reverse_proxy /_matrix/media* media_api:8071
+ # Change the end of each reverse_proxy line to the correct
+ # address for your various services.
+ @sync_api {
+  path_regexp /_matrix/client/.*?/(sync|user/.*?/filter/?.*|keys/changes|rooms/.*?/(messages|context/.*?|relations/.*?|event/.*?))$
+ }
+ reverse_proxy @sync_api sync_api:8073
+
+ reverse_proxy /_matrix/client* client_api:8071
+ reverse_proxy /_matrix/federation* federation_api:8071
+ reverse_proxy /_matrix/key* federation_api:8071
+ reverse_proxy /_matrix/media* media_api:8071
 }
diff --git a/docs/hiawatha/polylith-sample.conf b/docs/hiawatha/polylith-sample.conf
index 03614064..0093fdcf 100644
--- a/docs/hiawatha/polylith-sample.conf
+++ b/docs/hiawatha/polylith-sample.conf
@@ -20,8 +20,11 @@ VirtualHost {
         # /_matrix/client/.*/rooms/{roomId}/messages
         # /_matrix/client/.*/rooms/{roomId}/context/{eventID}
         # /_matrix/client/.*/rooms/{roomId}/event/{eventID}
+        # /_matrix/client/.*/rooms/{roomId}/relations/{eventID}
+        # /_matrix/client/.*/rooms/{roomId}/relations/{eventID}/{relType}
+        # /_matrix/client/.*/rooms/{roomId}/relations/{eventID}/{relType}/{eventType}
         # to sync_api
-        ReverseProxy = /_matrix/client/.*?/(sync|user/.*?/filter/?.*|keys/changes|rooms/.*?/(messages|context/.*?|event/.*?))$ http://localhost:8073 600
+        ReverseProxy = /_matrix/client/.*?/(sync|user/.*?/filter/?.*|keys/changes|rooms/.*?/(messages|context/.*?|relations/.*?|event/.*?))$ http://localhost:8073 600
         ReverseProxy = /_matrix/client http://localhost:8071 600
         ReverseProxy = /_matrix/federation http://localhost:8072 600
         ReverseProxy = /_matrix/key http://localhost:8072 600
diff --git a/docs/nginx/polylith-sample.conf b/docs/nginx/polylith-sample.conf
index 345d8a6b..6e81eb5f 100644
--- a/docs/nginx/polylith-sample.conf
+++ b/docs/nginx/polylith-sample.conf
@@ -30,8 +30,11 @@ server {
     # /_matrix/client/.*/rooms/{roomId}/messages
     # /_matrix/client/.*/rooms/{roomId}/context/{eventID}
     # /_matrix/client/.*/rooms/{roomId}/event/{eventID}
+    # /_matrix/client/.*/rooms/{roomId}/relations/{eventID}
+    # /_matrix/client/.*/rooms/{roomId}/relations/{eventID}/{relType}
+    # /_matrix/client/.*/rooms/{roomId}/relations/{eventID}/{relType}/{eventType}
     # to sync_api
-    location ~ /_matrix/client/.*?/(sync|user/.*?/filter/?.*|keys/changes|rooms/.*?/(messages|context/.*?|event/.*?))$  {
+    location ~ /_matrix/client/.*?/(sync|user/.*?/filter/?.*|keys/changes|rooms/.*?/(messages|context/.*?|relations/.*?|event/.*?))$  {
         proxy_pass http://sync_api:8073;
     }