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nixpkgs/nixos/modules/services/web-apps/discourse.nix

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{ config, options, lib, pkgs, utils, ... }:
let
json = pkgs.formats.json {};
cfg = config.services.discourse;
opt = options.services.discourse;
# Keep in sync with https://github.com/discourse/discourse_docker/blob/main/image/base/slim.Dockerfile#L5
upstreamPostgresqlVersion = lib.getVersion pkgs.postgresql_13;
postgresqlPackage = if config.services.postgresql.enable then
config.services.postgresql.package
else
pkgs.postgresql;
postgresqlVersion = lib.getVersion postgresqlPackage;
# We only want to create a database if we're actually going to connect to it.
databaseActuallyCreateLocally = cfg.database.createLocally && cfg.database.host == null;
tlsEnabled = cfg.enableACME
|| cfg.sslCertificate != null
|| cfg.sslCertificateKey != null;
in
{
options = {
services.discourse = {
enable = lib.mkEnableOption (lib.mdDoc "Discourse, an open source discussion platform");
package = lib.mkOption {
type = lib.types.package;
default = pkgs.discourse;
apply = p: p.override {
plugins = lib.unique (p.enabledPlugins ++ cfg.plugins);
};
defaultText = lib.literalExpression "pkgs.discourse";
description = lib.mdDoc ''
The discourse package to use.
'';
};
hostname = lib.mkOption {
type = lib.types.str;
default = config.networking.fqdnOrHostName;
defaultText = lib.literalExpression "config.networking.fqdnOrHostName";
example = "discourse.example.com";
description = lib.mdDoc ''
The hostname to serve Discourse on.
'';
};
secretKeyBaseFile = lib.mkOption {
type = with lib.types; nullOr path;
default = null;
example = "/run/keys/secret_key_base";
description = lib.mdDoc ''
The path to a file containing the
`secret_key_base` secret.
Discourse uses `secret_key_base` to encrypt
the cookie store, which contains session data, and to digest
user auth tokens.
Needs to be a 64 byte long string of hexadecimal
characters. You can generate one by running
```
openssl rand -hex 64 >/path/to/secret_key_base_file
```
This should be a string, not a nix path, since nix paths are
copied into the world-readable nix store.
'';
};
sslCertificate = lib.mkOption {
type = with lib.types; nullOr path;
default = null;
example = "/run/keys/ssl.cert";
description = lib.mdDoc ''
The path to the server SSL certificate. Set this to enable
SSL.
'';
};
sslCertificateKey = lib.mkOption {
type = with lib.types; nullOr path;
default = null;
example = "/run/keys/ssl.key";
description = lib.mdDoc ''
The path to the server SSL certificate key. Set this to
enable SSL.
'';
};
enableACME = lib.mkOption {
type = lib.types.bool;
default = cfg.sslCertificate == null && cfg.sslCertificateKey == null;
defaultText = lib.literalMD ''
`true`, unless {option}`services.discourse.sslCertificate`
and {option}`services.discourse.sslCertificateKey` are set.
'';
description = lib.mdDoc ''
Whether an ACME certificate should be used to secure
connections to the server.
'';
};
backendSettings = lib.mkOption {
type = with lib.types; attrsOf (nullOr (oneOf [ str int bool float ]));
default = {};
example = lib.literalExpression ''
{
max_reqs_per_ip_per_minute = 300;
max_reqs_per_ip_per_10_seconds = 60;
max_asset_reqs_per_ip_per_10_seconds = 250;
max_reqs_per_ip_mode = "warn+block";
};
'';
description = lib.mdDoc ''
Additional settings to put in the
{file}`discourse.conf` file.
Look in the
[discourse_defaults.conf](https://github.com/discourse/discourse/blob/master/config/discourse_defaults.conf)
file in the upstream distribution to find available options.
Setting an option to `null` means
“define variable, but leave right-hand side empty”.
'';
};
siteSettings = lib.mkOption {
type = json.type;
default = {};
example = lib.literalExpression ''
{
required = {
title = "My Cats";
site_description = "Discuss My Cats (and be nice plz)";
};
login = {
enable_github_logins = true;
github_client_id = "a2f6dfe838cb3206ce20";
github_client_secret._secret = /run/keys/discourse_github_client_secret;
};
};
'';
description = lib.mdDoc ''
Discourse site settings. These are the settings that can be
changed from the UI. This only defines their default values:
they can still be overridden from the UI.
Available settings can be found by looking in the
[site_settings.yml](https://github.com/discourse/discourse/blob/master/config/site_settings.yml)
file of the upstream distribution. To find a setting's path,
you only need to care about the first two levels; i.e. its
category and name. See the example.
Settings containing secret data should be set to an
attribute set containing the attribute
`_secret` - a string pointing to a file
containing the value the option should be set to. See the
example to get a better picture of this: in the resulting
{file}`config/nixos_site_settings.json` file,
the `login.github_client_secret` key will
be set to the contents of the
{file}`/run/keys/discourse_github_client_secret`
file.
'';
};
admin = {
skipCreate = lib.mkOption {
type = lib.types.bool;
default = false;
description = lib.mdDoc ''
Do not create the admin account, instead rely on other
existing admin accounts.
'';
};
email = lib.mkOption {
type = lib.types.str;
example = "admin@example.com";
description = lib.mdDoc ''
The admin user email address.
'';
};
username = lib.mkOption {
type = lib.types.str;
example = "admin";
description = lib.mdDoc ''
The admin user username.
'';
};
fullName = lib.mkOption {
type = lib.types.str;
description = lib.mdDoc ''
The admin user's full name.
'';
};
passwordFile = lib.mkOption {
type = lib.types.path;
description = lib.mdDoc ''
A path to a file containing the admin user's password.
This should be a string, not a nix path, since nix paths are
copied into the world-readable nix store.
'';
};
};
nginx.enable = lib.mkOption {
type = lib.types.bool;
default = true;
description = lib.mdDoc ''
Whether an `nginx` virtual host should be
set up to serve Discourse. Only disable if you're planning
to use a different web server, which is not recommended.
'';
};
database = {
pool = lib.mkOption {
type = lib.types.int;
default = 8;
description = lib.mdDoc ''
Database connection pool size.
'';
};
host = lib.mkOption {
type = with lib.types; nullOr str;
default = null;
description = lib.mdDoc ''
Discourse database hostname. `null` means
“prefer local unix socket connection”.
'';
};
passwordFile = lib.mkOption {
type = with lib.types; nullOr path;
default = null;
description = lib.mdDoc ''
File containing the Discourse database user password.
This should be a string, not a nix path, since nix paths are
copied into the world-readable nix store.
'';
};
createLocally = lib.mkOption {
type = lib.types.bool;
default = true;
description = lib.mdDoc ''
Whether a database should be automatically created on the
local host. Set this to `false` if you plan
on provisioning a local database yourself. This has no effect
if {option}`services.discourse.database.host` is customized.
'';
};
name = lib.mkOption {
type = lib.types.str;
default = "discourse";
description = lib.mdDoc ''
Discourse database name.
'';
};
username = lib.mkOption {
type = lib.types.str;
default = "discourse";
description = lib.mdDoc ''
Discourse database user.
'';
};
ignorePostgresqlVersion = lib.mkOption {
type = lib.types.bool;
default = false;
description = lib.mdDoc ''
Whether to allow other versions of PostgreSQL than the
recommended one. Only effective when
{option}`services.discourse.database.createLocally`
is enabled.
'';
};
};
redis = {
host = lib.mkOption {
type = lib.types.str;
default = "localhost";
description = lib.mdDoc ''
Redis server hostname.
'';
};
passwordFile = lib.mkOption {
type = with lib.types; nullOr path;
default = null;
description = lib.mdDoc ''
File containing the Redis password.
This should be a string, not a nix path, since nix paths are
copied into the world-readable nix store.
'';
};
dbNumber = lib.mkOption {
type = lib.types.int;
default = 0;
description = lib.mdDoc ''
Redis database number.
'';
};
useSSL = lib.mkOption {
type = lib.types.bool;
default = cfg.redis.host != "localhost";
defaultText = lib.literalExpression ''config.${opt.redis.host} != "localhost"'';
description = lib.mdDoc ''
Connect to Redis with SSL.
'';
};
};
mail = {
notificationEmailAddress = lib.mkOption {
type = lib.types.str;
default = "${if cfg.mail.incoming.enable then "notifications" else "noreply"}@${cfg.hostname}";
defaultText = lib.literalExpression ''
"''${if config.services.discourse.mail.incoming.enable then "notifications" else "noreply"}@''${config.services.discourse.hostname}"
'';
description = lib.mdDoc ''
The `from:` email address used when
sending all essential system emails. The domain specified
here must have SPF, DKIM and reverse PTR records set
correctly for email to arrive.
'';
};
contactEmailAddress = lib.mkOption {
type = lib.types.str;
default = "";
description = lib.mdDoc ''
Email address of key contact responsible for this
site. Used for critical notifications, as well as on the
`/about` contact form for urgent matters.
'';
};
outgoing = {
serverAddress = lib.mkOption {
type = lib.types.str;
default = "localhost";
description = lib.mdDoc ''
The address of the SMTP server Discourse should use to
send email.
'';
};
port = lib.mkOption {
type = lib.types.port;
default = 25;
description = lib.mdDoc ''
The port of the SMTP server Discourse should use to
send email.
'';
};
username = lib.mkOption {
type = with lib.types; nullOr str;
default = null;
description = lib.mdDoc ''
The username of the SMTP server.
'';
};
passwordFile = lib.mkOption {
type = lib.types.nullOr lib.types.path;
default = null;
description = lib.mdDoc ''
A file containing the password of the SMTP server account.
This should be a string, not a nix path, since nix paths
are copied into the world-readable nix store.
'';
};
domain = lib.mkOption {
type = lib.types.str;
default = cfg.hostname;
defaultText = lib.literalExpression "config.${opt.hostname}";
description = lib.mdDoc ''
HELO domain to use for outgoing mail.
'';
};
authentication = lib.mkOption {
type = with lib.types; nullOr (enum ["plain" "login" "cram_md5"]);
default = null;
description = lib.mdDoc ''
Authentication type to use, see http://api.rubyonrails.org/classes/ActionMailer/Base.html
'';
};
enableStartTLSAuto = lib.mkOption {
type = lib.types.bool;
default = true;
description = lib.mdDoc ''
Whether to try to use StartTLS.
'';
};
opensslVerifyMode = lib.mkOption {
type = lib.types.str;
default = "peer";
description = lib.mdDoc ''
How OpenSSL checks the certificate, see http://api.rubyonrails.org/classes/ActionMailer/Base.html
'';
};
forceTLS = lib.mkOption {
type = lib.types.bool;
default = false;
description = lib.mdDoc ''
Force implicit TLS as per RFC 8314 3.3.
'';
};
};
incoming = {
enable = lib.mkOption {
type = lib.types.bool;
default = false;
description = lib.mdDoc ''
Whether to set up Postfix to receive incoming mail.
'';
};
replyEmailAddress = lib.mkOption {
type = lib.types.str;
default = "%{reply_key}@${cfg.hostname}";
defaultText = lib.literalExpression ''"%{reply_key}@''${config.services.discourse.hostname}"'';
description = lib.mdDoc ''
Template for reply by email incoming email address, for
example: %{reply_key}@reply.example.com or
replies+%{reply_key}@example.com
'';
};
mailReceiverPackage = lib.mkOption {
type = lib.types.package;
default = pkgs.discourse-mail-receiver;
defaultText = lib.literalExpression "pkgs.discourse-mail-receiver";
description = lib.mdDoc ''
The discourse-mail-receiver package to use.
'';
};
apiKeyFile = lib.mkOption {
type = lib.types.nullOr lib.types.path;
default = null;
description = lib.mdDoc ''
A file containing the Discourse API key used to add
posts and messages from mail. If left at its default
value `null`, one will be automatically
generated.
This should be a string, not a nix path, since nix paths
are copied into the world-readable nix store.
'';
};
};
};
plugins = lib.mkOption {
type = lib.types.listOf lib.types.package;
default = [];
example = lib.literalExpression ''
with config.services.discourse.package.plugins; [
discourse-canned-replies
discourse-github
];
'';
description = lib.mdDoc ''
Plugins to install as part of Discourse, expressed as a list of derivations.
'';
};
sidekiqProcesses = lib.mkOption {
type = lib.types.int;
default = 1;
description = lib.mdDoc ''
How many Sidekiq processes should be spawned.
'';
};
unicornTimeout = lib.mkOption {
type = lib.types.int;
default = 30;
description = lib.mdDoc ''
Time in seconds before a request to Unicorn times out.
This can be raised if the system Discourse is running on is
too slow to handle many requests within 30 seconds.
'';
};
};
};
config = lib.mkIf cfg.enable {
assertions = [
{
assertion = (cfg.database.host != null) -> (cfg.database.passwordFile != null);
message = "When services.gitlab.database.host is customized, services.discourse.database.passwordFile must be set!";
}
{
assertion = cfg.hostname != "";
message = "Could not automatically determine hostname, set service.discourse.hostname manually.";
}
{
assertion = cfg.database.ignorePostgresqlVersion || (databaseActuallyCreateLocally -> upstreamPostgresqlVersion == postgresqlVersion);
message = "The PostgreSQL version recommended for use with Discourse is ${upstreamPostgresqlVersion}, you're using ${postgresqlVersion}. "
+ "Either update your PostgreSQL package to the correct version or set services.discourse.database.ignorePostgresqlVersion. "
+ "See https://nixos.org/manual/nixos/stable/index.html#module-postgresql for details on how to upgrade PostgreSQL.";
}
];
# Default config values are from `config/discourse_defaults.conf`
# upstream.
services.discourse.backendSettings = lib.mapAttrs (_: lib.mkDefault) {
db_pool = cfg.database.pool;
db_timeout = 5000;
db_connect_timeout = 5;
db_socket = null;
db_host = cfg.database.host;
db_backup_host = null;
db_port = null;
db_backup_port = 5432;
db_name = cfg.database.name;
db_username = if databaseActuallyCreateLocally then "discourse" else cfg.database.username;
db_password = cfg.database.passwordFile;
db_prepared_statements = false;
db_replica_host = null;
db_replica_port = null;
db_advisory_locks = true;
inherit (cfg) hostname;
backup_hostname = null;
smtp_address = cfg.mail.outgoing.serverAddress;
smtp_port = cfg.mail.outgoing.port;
smtp_domain = cfg.mail.outgoing.domain;
smtp_user_name = cfg.mail.outgoing.username;
smtp_password = cfg.mail.outgoing.passwordFile;
smtp_authentication = cfg.mail.outgoing.authentication;
smtp_enable_start_tls = cfg.mail.outgoing.enableStartTLSAuto;
smtp_openssl_verify_mode = cfg.mail.outgoing.opensslVerifyMode;
smtp_force_tls = cfg.mail.outgoing.forceTLS;
load_mini_profiler = true;
mini_profiler_snapshots_period = 0;
mini_profiler_snapshots_transport_url = null;
mini_profiler_snapshots_transport_auth_key = null;
cdn_url = null;
cdn_origin_hostname = null;
developer_emails = null;
redis_host = cfg.redis.host;
redis_port = 6379;
redis_replica_host = null;
redis_replica_port = 6379;
redis_db = cfg.redis.dbNumber;
redis_password = cfg.redis.passwordFile;
redis_skip_client_commands = false;
redis_use_ssl = cfg.redis.useSSL;
message_bus_redis_enabled = false;
message_bus_redis_host = "localhost";
message_bus_redis_port = 6379;
message_bus_redis_replica_host = null;
message_bus_redis_replica_port = 6379;
message_bus_redis_db = 0;
message_bus_redis_password = null;
message_bus_redis_skip_client_commands = false;
enable_cors = false;
cors_origin = "";
serve_static_assets = false;
sidekiq_workers = 5;
connection_reaper_age = 30;
connection_reaper_interval = 30;
relative_url_root = null;
message_bus_max_backlog_size = 100;
message_bus_clear_every = 50;
secret_key_base = cfg.secretKeyBaseFile;
fallback_assets_path = null;
s3_bucket = null;
s3_region = null;
s3_access_key_id = null;
s3_secret_access_key = null;
s3_use_iam_profile = null;
s3_cdn_url = null;
s3_endpoint = null;
s3_http_continue_timeout = null;
s3_install_cors_rule = null;
s3_asset_cdn_url = null;
max_user_api_reqs_per_minute = 20;
max_user_api_reqs_per_day = 2880;
max_admin_api_reqs_per_minute = 60;
max_reqs_per_ip_per_minute = 200;
max_reqs_per_ip_per_10_seconds = 50;
max_asset_reqs_per_ip_per_10_seconds = 200;
max_reqs_per_ip_mode = "block";
max_reqs_rate_limit_on_private = false;
skip_per_ip_rate_limit_trust_level = 1;
force_anonymous_min_queue_seconds = 1;
force_anonymous_min_per_10_seconds = 3;
background_requests_max_queue_length = 0.5;
reject_message_bus_queue_seconds = 0.1;
disable_search_queue_threshold = 1;
max_old_rebakes_per_15_minutes = 300;
max_logster_logs = 1000;
refresh_maxmind_db_during_precompile_days = 2;
maxmind_backup_path = null;
maxmind_license_key = null;
enable_performance_http_headers = false;
enable_js_error_reporting = true;
mini_scheduler_workers = 5;
compress_anon_cache = false;
anon_cache_store_threshold = 2;
allowed_theme_repos = null;
enable_email_sync_demon = false;
max_digests_enqueued_per_30_mins_per_site = 10000;
cluster_name = null;
multisite_config_path = "config/multisite.yml";
enable_long_polling = null;
long_polling_interval = null;
preload_link_header = false;
redirect_avatar_requests = false;
pg_force_readonly_mode = false;
dns_query_timeout_secs = null;
regex_timeout_seconds = 2;
allow_impersonation = true;
};
services.redis.servers.discourse =
lib.mkIf (lib.elem cfg.redis.host [ "localhost" "127.0.0.1" ]) {
enable = true;
bind = cfg.redis.host;
port = cfg.backendSettings.redis_port;
};
services.postgresql = lib.mkIf databaseActuallyCreateLocally {
enable = true;
ensureUsers = [{ name = "discourse"; }];
};
# The postgresql module doesn't currently support concepts like
# objects owners and extensions; for now we tack on what's needed
# here.
systemd.services.discourse-postgresql =
let
pgsql = config.services.postgresql;
in
lib.mkIf databaseActuallyCreateLocally {
after = [ "postgresql.service" ];
bindsTo = [ "postgresql.service" ];
wantedBy = [ "discourse.service" ];
partOf = [ "discourse.service" ];
path = [
pgsql.package
];
script = ''
set -o errexit -o pipefail -o nounset -o errtrace
shopt -s inherit_errexit
psql -tAc "SELECT 1 FROM pg_database WHERE datname = 'discourse'" | grep -q 1 || psql -tAc 'CREATE DATABASE "discourse" OWNER "discourse"'
psql '${cfg.database.name}' -tAc "CREATE EXTENSION IF NOT EXISTS pg_trgm"
psql '${cfg.database.name}' -tAc "CREATE EXTENSION IF NOT EXISTS hstore"
'';
serviceConfig = {
User = pgsql.superUser;
Type = "oneshot";
RemainAfterExit = true;
};
};
systemd.services.discourse = {
wantedBy = [ "multi-user.target" ];
after = [
"redis-discourse.service"
"postgresql.service"
"discourse-postgresql.service"
];
bindsTo = [
"redis-discourse.service"
] ++ lib.optionals (cfg.database.host == null) [
"postgresql.service"
"discourse-postgresql.service"
];
path = cfg.package.runtimeDeps ++ [
postgresqlPackage
pkgs.replace-secret
cfg.package.rake
];
environment = cfg.package.runtimeEnv // {
UNICORN_TIMEOUT = builtins.toString cfg.unicornTimeout;
UNICORN_SIDEKIQS = builtins.toString cfg.sidekiqProcesses;
MALLOC_ARENA_MAX = "2";
};
preStart =
let
discourseKeyValue = lib.generators.toKeyValue {
mkKeyValue = lib.flip lib.generators.mkKeyValueDefault " = " {
mkValueString = v: with builtins;
if isInt v then toString v
else if isString v then ''"${v}"''
else if true == v then "true"
else if false == v then "false"
else if null == v then ""
else if isFloat v then lib.strings.floatToString v
else throw "unsupported type ${typeOf v}: ${(lib.generators.toPretty {}) v}";
};
};
discourseConf = pkgs.writeText "discourse.conf" (discourseKeyValue cfg.backendSettings);
mkSecretReplacement = file:
lib.optionalString (file != null) ''
replace-secret '${file}' '${file}' /run/discourse/config/discourse.conf
'';
mkAdmin = ''
export ADMIN_EMAIL="${cfg.admin.email}"
export ADMIN_NAME="${cfg.admin.fullName}"
export ADMIN_USERNAME="${cfg.admin.username}"
ADMIN_PASSWORD="$(<${cfg.admin.passwordFile})"
export ADMIN_PASSWORD
discourse-rake admin:create_noninteractively
'';
in ''
set -o errexit -o pipefail -o nounset -o errtrace
shopt -s inherit_errexit
umask u=rwx,g=rx,o=
rm -rf /var/lib/discourse/tmp/*
cp -r ${cfg.package}/share/discourse/config.dist/* /run/discourse/config/
cp -r ${cfg.package}/share/discourse/public.dist/* /run/discourse/public/
ln -sf /var/lib/discourse/uploads /run/discourse/public/uploads
ln -sf /var/lib/discourse/backups /run/discourse/public/backups
(
umask u=rwx,g=,o=
${utils.genJqSecretsReplacementSnippet
cfg.siteSettings
"/run/discourse/config/nixos_site_settings.json"
}
install -T -m 0600 -o discourse ${discourseConf} /run/discourse/config/discourse.conf
${mkSecretReplacement cfg.database.passwordFile}
${mkSecretReplacement cfg.mail.outgoing.passwordFile}
${mkSecretReplacement cfg.redis.passwordFile}
${mkSecretReplacement cfg.secretKeyBaseFile}
chmod 0400 /run/discourse/config/discourse.conf
)
discourse-rake db:migrate >>/var/log/discourse/db_migration.log
chmod -R u+w /var/lib/discourse/tmp/
${lib.optionalString (!cfg.admin.skipCreate) mkAdmin}
discourse-rake themes:update
discourse-rake uploads:regenerate_missing_optimized
'';
serviceConfig = {
Type = "simple";
User = "discourse";
Group = "discourse";
RuntimeDirectory = map (p: "discourse/" + p) [
"config"
"home"
"assets/javascripts/plugins"
"public"
"sockets"
];
RuntimeDirectoryMode = "0750";
StateDirectory = map (p: "discourse/" + p) [
"uploads"
"backups"
"tmp"
];
StateDirectoryMode = "0750";
LogsDirectory = "discourse";
TimeoutSec = "infinity";
Restart = "on-failure";
WorkingDirectory = "${cfg.package}/share/discourse";
RemoveIPC = true;
PrivateTmp = true;
NoNewPrivileges = true;
RestrictSUIDSGID = true;
ProtectSystem = "strict";
ProtectHome = "read-only";
ExecStart = "${cfg.package.rubyEnv}/bin/bundle exec config/unicorn_launcher -E production -c config/unicorn.conf.rb";
};
};
services.nginx = lib.mkIf cfg.nginx.enable {
enable = true;
recommendedTlsSettings = true;
recommendedOptimisation = true;
recommendedBrotliSettings = true;
recommendedGzipSettings = true;
recommendedProxySettings = true;
upstreams.discourse.servers."unix:/run/discourse/sockets/unicorn.sock" = {};
appendHttpConfig = ''
# inactive means we keep stuff around for 1440m minutes regardless of last access (1 week)
# levels means it is a 2 deep hierarchy cause we can have lots of files
# max_size limits the size of the cache
proxy_cache_path /var/cache/nginx inactive=1440m levels=1:2 keys_zone=discourse:10m max_size=600m;
# see: https://meta.discourse.org/t/x/74060
proxy_buffer_size 8k;
'';
virtualHosts.${cfg.hostname} = {
inherit (cfg) sslCertificate sslCertificateKey enableACME;
forceSSL = lib.mkDefault tlsEnabled;
root = "${cfg.package}/share/discourse/public";
locations =
let
proxy = { extraConfig ? "" }: {
proxyPass = "http://discourse";
extraConfig = extraConfig + ''
proxy_set_header X-Request-Start "t=''${msec}";
'';
};
cache = time: ''
expires ${time};
add_header Cache-Control public,immutable;
'';
cache_1y = cache "1y";
cache_1d = cache "1d";
in
{
"/".tryFiles = "$uri @discourse";
"@discourse" = proxy {};
"^~ /backups/".extraConfig = ''
internal;
'';
"/favicon.ico" = {
return = "204";
extraConfig = ''
access_log off;
log_not_found off;
'';
};
"~ ^/uploads/short-url/" = proxy {};
"~ ^/secure-media-uploads/" = proxy {};
"~* (fonts|assets|plugins|uploads)/.*\.(eot|ttf|woff|woff2|ico|otf)$".extraConfig = cache_1y + ''
add_header Access-Control-Allow-Origin *;
'';
"/srv/status" = proxy {
extraConfig = ''
access_log off;
log_not_found off;
'';
};
"~ ^/javascripts/".extraConfig = cache_1d;
"~ ^/assets/(?<asset_path>.+)$".extraConfig = cache_1y + ''
# asset pipeline enables this
brotli_static on;
gzip_static on;
'';
"~ ^/plugins/".extraConfig = cache_1y;
"~ /images/emoji/".extraConfig = cache_1y;
"~ ^/uploads/" = proxy {
extraConfig = cache_1y + ''
proxy_set_header X-Sendfile-Type X-Accel-Redirect;
proxy_set_header X-Accel-Mapping ${cfg.package}/share/discourse/public/=/downloads/;
# custom CSS
location ~ /stylesheet-cache/ {
try_files $uri =404;
}
# this allows us to bypass rails
location ~* \.(gif|png|jpg|jpeg|bmp|tif|tiff|ico|webp)$ {
try_files $uri =404;
}
# SVG needs an extra header attached
location ~* \.(svg)$ {
}
# thumbnails & optimized images
location ~ /_?optimized/ {
try_files $uri =404;
}
'';
};
"~ ^/admin/backups/" = proxy {
extraConfig = ''
proxy_set_header X-Sendfile-Type X-Accel-Redirect;
proxy_set_header X-Accel-Mapping ${cfg.package}/share/discourse/public/=/downloads/;
'';
};
"~ ^/(svg-sprite/|letter_avatar/|letter_avatar_proxy/|user_avatar|highlight-js|stylesheets|theme-javascripts|favicon/proxied|service-worker)" = proxy {
extraConfig = ''
# if Set-Cookie is in the response nothing gets cached
# this is double bad cause we are not passing last modified in
proxy_ignore_headers "Set-Cookie";
proxy_hide_header "Set-Cookie";
proxy_hide_header "X-Discourse-Username";
proxy_hide_header "X-Runtime";
# note x-accel-redirect can not be used with proxy_cache
proxy_cache discourse;
proxy_cache_key "$scheme,$host,$request_uri";
proxy_cache_valid 200 301 302 7d;
'';
};
"/message-bus/" = proxy {
extraConfig = ''
proxy_http_version 1.1;
proxy_buffering off;
'';
};
"/downloads/".extraConfig = ''
internal;
alias ${cfg.package}/share/discourse/public/;
'';
};
};
};
systemd.services.discourse-mail-receiver-setup = lib.mkIf cfg.mail.incoming.enable (
let
mail-receiver-environment = {
MAIL_DOMAIN = cfg.hostname;
DISCOURSE_BASE_URL = "http${lib.optionalString tlsEnabled "s"}://${cfg.hostname}";
DISCOURSE_API_KEY = "@api-key@";
DISCOURSE_API_USERNAME = "system";
};
mail-receiver-json = json.generate "mail-receiver.json" mail-receiver-environment;
in
{
before = [ "postfix.service" ];
after = [ "discourse.service" ];
wantedBy = [ "discourse.service" ];
partOf = [ "discourse.service" ];
path = [
cfg.package.rake
pkgs.jq
];
preStart = lib.optionalString (cfg.mail.incoming.apiKeyFile == null) ''
set -o errexit -o pipefail -o nounset -o errtrace
shopt -s inherit_errexit
if [[ ! -e /var/lib/discourse-mail-receiver/api_key ]]; then
discourse-rake api_key:create_master[email-receiver] >/var/lib/discourse-mail-receiver/api_key
fi
'';
script =
let
apiKeyPath =
if cfg.mail.incoming.apiKeyFile == null then
"/var/lib/discourse-mail-receiver/api_key"
else
cfg.mail.incoming.apiKeyFile;
in ''
set -o errexit -o pipefail -o nounset -o errtrace
shopt -s inherit_errexit
api_key=$(<'${apiKeyPath}')
export api_key
jq <${mail-receiver-json} \
'.DISCOURSE_API_KEY = $ENV.api_key' \
>'/run/discourse-mail-receiver/mail-receiver-environment.json'
'';
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
RuntimeDirectory = "discourse-mail-receiver";
RuntimeDirectoryMode = "0700";
StateDirectory = "discourse-mail-receiver";
User = "discourse";
Group = "discourse";
};
});
services.discourse.siteSettings = {
required = {
notification_email = cfg.mail.notificationEmailAddress;
contact_email = cfg.mail.contactEmailAddress;
};
security.force_https = tlsEnabled;
email = {
manual_polling_enabled = cfg.mail.incoming.enable;
reply_by_email_enabled = cfg.mail.incoming.enable;
reply_by_email_address = cfg.mail.incoming.replyEmailAddress;
};
};
services.postfix = lib.mkIf cfg.mail.incoming.enable {
enable = true;
sslCert = lib.optionalString (cfg.sslCertificate != null) cfg.sslCertificate;
sslKey = lib.optionalString (cfg.sslCertificateKey != null) cfg.sslCertificateKey;
origin = cfg.hostname;
relayDomains = [ cfg.hostname ];
config = {
smtpd_recipient_restrictions = "check_policy_service unix:private/discourse-policy";
append_dot_mydomain = lib.mkDefault false;
compatibility_level = "2";
smtputf8_enable = false;
smtpd_banner = lib.mkDefault "ESMTP server";
myhostname = lib.mkDefault cfg.hostname;
mydestination = lib.mkDefault "localhost";
};
transport = ''
${cfg.hostname} discourse-mail-receiver:
'';
masterConfig = {
"discourse-mail-receiver" = {
type = "unix";
privileged = true;
chroot = false;
command = "pipe";
args = [
"user=discourse"
"argv=${cfg.mail.incoming.mailReceiverPackage}/bin/receive-mail"
"\${recipient}"
];
};
"discourse-policy" = {
type = "unix";
privileged = true;
chroot = false;
command = "spawn";
args = [
"user=discourse"
"argv=${cfg.mail.incoming.mailReceiverPackage}/bin/discourse-smtp-fast-rejection"
];
};
};
};
users.users = {
discourse = {
group = "discourse";
isSystemUser = true;
};
} // (lib.optionalAttrs cfg.nginx.enable {
${config.services.nginx.user}.extraGroups = [ "discourse" ];
});
users.groups = {
discourse = {};
};
environment.systemPackages = [
cfg.package.rake
];
};
meta.doc = ./discourse.md;
meta.maintainers = [ lib.maintainers.talyz ];
}
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