From 0131c8c15722e2579d8e8469f18867fb84f7f9fd Mon Sep 17 00:00:00 2001
From: Adithya Nair <adtya@adtya.xyz>
Date: Sat, 20 Jul 2024 23:16:33 +0530
Subject: [PATCH] wynne: setup dendrite

---
 hosts/wynne/services/apps/default.nix         |   1 +
 .../wynne/services/apps/dendrite/config.yaml  | 143 ++++++++++++++++++
 .../wynne/services/apps/dendrite/default.nix  |  56 +++++++
 hosts/wynne/services/apps/postgresql.nix      |   8 +-
 4 files changed, 204 insertions(+), 4 deletions(-)
 create mode 100644 hosts/wynne/services/apps/dendrite/config.yaml
 create mode 100644 hosts/wynne/services/apps/dendrite/default.nix

diff --git a/hosts/wynne/services/apps/default.nix b/hosts/wynne/services/apps/default.nix
index 0059a19..aab1813 100644
--- a/hosts/wynne/services/apps/default.nix
+++ b/hosts/wynne/services/apps/default.nix
@@ -1,5 +1,6 @@
 _: {
   imports = [
+    ./dendrite
     ./acomputer.lol.nix
     ./postgresql.nix
     ../../../shared/prometheus-exporters.nix
diff --git a/hosts/wynne/services/apps/dendrite/config.yaml b/hosts/wynne/services/apps/dendrite/config.yaml
new file mode 100644
index 0000000..aaa2ef2
--- /dev/null
+++ b/hosts/wynne/services/apps/dendrite/config.yaml
@@ -0,0 +1,143 @@
+version: 2
+
+global:
+  server_name: acomputer.lol
+  private_key: /persist/secrets/dendrite/matrix_key.pem
+  key_validity_period: 168h0m0s
+  database:
+    connection_string: postgresql://dendrite@localhost/dendrite?sslmode=disable
+    max_open_conns: 90
+    max_idle_conns: 5
+    conn_max_lifetime: -1
+
+  cache:
+    max_size_estimated: 1gb
+    max_age: 1h
+
+  well_known_server_name: "matrix.acomputer.lol:443"
+  well_known_client_name: "https://matrix.acomputer.lol"
+
+  # The server name to delegate sliding sync communications to, with optional port.
+  # Requires `well_known_client_name` to also be configured.
+  # well_known_sliding_sync_proxy: ""
+
+  trusted_third_party_id_servers:
+    - matrix.org
+    - vector.im
+
+  disable_federation: false
+
+  # Configures the handling of presence events. Inbound controls whether we receive
+  # presence events from other servers, outbound controls whether we send presence
+  # events for our local users to other servers.
+  presence:
+    enable_inbound: false
+    enable_outbound: false
+
+  # Server notices allows server admins to send messages to all users on the server.
+  server_notices:
+    enabled: false
+    local_part: "_server"
+    display_name: "Server Alerts"
+    avatar_url: ""
+    room_name: "Server Alerts"
+
+  # Configuration for NATS JetStream
+  jetstream:
+    storage_path: /mnt/data/dendrite/nats
+    topic_prefix: Dendrite
+
+  # Configuration for Prometheus metric collection.
+  metrics:
+    enabled: false
+    basic_auth:
+      username: metrics
+      password: metrics
+
+client_api:
+  registration_disabled: true
+  guests_disabled: true
+  registration_shared_secret: ""
+  enable_registration_captcha: false
+  recaptcha_public_key: ""
+  recaptcha_private_key: ""
+  recaptcha_bypass_secret: ""
+
+  # TURN server information that this homeserver should send to clients.
+  turn:
+    turn_user_lifetime: "5m"
+    turn_uris:
+    #  - turn:turn.server.org?transport=udp
+    #  - turn:turn.server.org?transport=tcp
+    turn_shared_secret: ""
+    # If your TURN server requires static credentials, then you will need to enter
+    # them here instead of supplying a shared secret. Note that these credentials
+    # will be visible to clients!
+    # turn_username: ""
+    # turn_password: ""
+
+  # Settings for rate-limited endpoints. Rate limiting kicks in after the threshold
+  # number of "slots" have been taken by requests from a specific host. Each "slot"
+  # will be released after the cooloff time in milliseconds. Server administrators
+  # and appservice users are exempt from rate limiting by default.
+  rate_limiting:
+    enabled: true
+    threshold: 20
+    cooloff_ms: 500
+    exempt_user_ids:
+    #  - "@user:domain.com"
+
+federation_api:
+  send_max_retries: 16
+  disable_tls_validation: false
+  disable_http_keepalives: false
+
+  key_perspectives:
+    - server_name: matrix.org
+      keys:
+        - key_id: ed25519:auto
+          public_key: Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw
+        - key_id: ed25519:a_RXGa
+          public_key: l8Hft5qXKn1vfHrg3p4+W8gELQVo8N13JkluMfmn2sQ
+  prefer_direct_fetch: false
+
+# Configuration for the Media API.
+media_api:
+  base_path: /mnt/data/dendrite/media
+  max_file_size_bytes: 10485760
+  dynamic_thumbnails: false
+  max_thumbnail_generators: 10
+  thumbnail_sizes:
+    - width: 32
+      height: 32
+      method: crop
+    - width: 96
+      height: 96
+      method: crop
+    - width: 640
+      height: 480
+      method: scale
+
+# Configuration for enabling experimental MSCs on this homeserver.
+mscs:
+  mscs:
+  #  - msc2836  # (Threading, see https://github.com/matrix-org/matrix-doc/pull/2836)
+
+sync_api:
+  real_ip_header: X-Real-IP
+
+  search:
+    enabled: true
+    index_path: "/mnt/data/dendrite/searchindex"
+    language: "en"
+
+# Logging configuration. The "std" logging type controls the logs being sent to
+# stdout. The "file" logging type controls logs being written to a log folder on
+# the disk. Supported log levels are "debug", "info", "warn", "error".
+logging:
+  - type: std
+    level: warn
+  - type: file
+    level: warn
+    params:
+      path: /mnt/data/dendrite/logs
diff --git a/hosts/wynne/services/apps/dendrite/default.nix b/hosts/wynne/services/apps/dendrite/default.nix
new file mode 100644
index 0000000..cee64a1
--- /dev/null
+++ b/hosts/wynne/services/apps/dendrite/default.nix
@@ -0,0 +1,56 @@
+{ pkgs, ... }: {
+  services = {
+    caddy.virtualHosts."matrix.acomputer.lol" = {
+      extraConfig = ''
+        reverse_proxy /_matrix/* 127.0.0.1:8008
+        reverse_proxy /_synapse/* 127.0.0.1:8008
+      '';
+    };
+    frp.settings.proxies = [
+      {
+        name = "http.matrix.acomputer.lol";
+        type = "http";
+        customDomains = [ "matrix.acomputer.lol" ];
+        localPort = 80;
+        transport.useCompression = true;
+      }
+      {
+        name = "https.matrix.acomputer.lol";
+        type = "https";
+        customDomains = [ "matrix.acomputer.lol" ];
+        localPort = 443;
+        transport.useCompression = true;
+      }
+    ];
+  };
+  systemd.services.dendrite = {
+    description = "Dendrite Matrix homeserver";
+    after = [ "network.target" ];
+    wantedBy = [ "multi-user.target" ];
+    unitConfig.RequiresMountsFor = [ "/mnt/data" ];
+    serviceConfig = {
+      Type = "simple";
+      User = "dendrite";
+      Group = "dendrite";
+      StateDirectory = "dendrite";
+      WorkingDirectory = "/mnt/data/dendrite";
+      RuntimeDirectory = "dendrite";
+      RuntimeDirectoryMode = "0700";
+      LimitNOFILE = 65535;
+      ExecStart = ''
+        ${pkgs.dendrite}/bin/dendrite -http-bind-address 127.0.0.1:8008 -config ${./config.yaml}
+      '';
+      ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
+      Restart = "on-failure";
+    };
+  };
+  users.users.dendrite = {
+    name = "dendrite";
+    description = "Dendrite server user";
+    home = "/mnt/data/dendrite";
+    createHome = true;
+    group = "dendrite";
+    isSystemUser = true;
+  };
+  users.groups.dendrite = { };
+}
diff --git a/hosts/wynne/services/apps/postgresql.nix b/hosts/wynne/services/apps/postgresql.nix
index 6277e84..83816ff 100644
--- a/hosts/wynne/services/apps/postgresql.nix
+++ b/hosts/wynne/services/apps/postgresql.nix
@@ -18,10 +18,10 @@
       '';
       ensureDatabases = [ "dendrite" ];
       ensureUsers = [
-      {
-        name = "dendrite";
-        ensureDBOwnership = true;
-      }
+        {
+          name = "dendrite";
+          ensureDBOwnership = true;
+        }
       ];
     };
   };