1 files changed, 221 insertions, 0 deletions

diff --git a/systems/eldiron/websites/cloud/farm.nix b/systems/eldiron/websites/cloud/farm.nix
new file mode 100644
index 0000000..df24cba
--- /dev/null
+++ b/systems/eldiron/websites/cloud/farm.nix
@@ -0,0 +1,221 @@
+{ lib, pkgs, config, ... }:
+let
+  scfg = config.secrets.fullPaths;
+  cfg = config.myServices.tools.cloud.farm;
+  apacheUser = config.services.websites.env.production.user;
+  apacheGroup = config.services.websites.env.production.group;
+  additionalConfs = icfg: lib.attrsets.mapAttrs (n: v: pkgs.writeText "${n}.json" (builtins.toJSON v)) icfg.rootDir.otherConfig;
+  overrideConfig = icfg: pkgs.writeText "override.config.php" ''
+    <?php
+    $CONFIG = json_decode(file_get_contents("${icfg.configOverride}"), TRUE);
+  '';
+  toVhost = icfg: ''
+    SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1
+    SetEnv NEXTCLOUD_CONFIG_DIR "${icfg.varDir}/config"
+    <Directory ${icfg.rootDir}>
+      AcceptPathInfo On
+      DirectoryIndex index.php
+      Options FollowSymlinks
+      Require all granted
+      AllowOverride all
+
+      <IfModule mod_headers.c>
+        Header always set Strict-Transport-Security "max-age=15552000; includeSubDomains; preload"
+      </IfModule>
+      <FilesMatch "\.php$">
+        CGIPassAuth on
+        SetHandler "proxy:unix:${config.services.phpfpm.pools.${icfg.phpPoolName}.socket}|fcgi://localhost"
+      </FilesMatch>
+
+    </Directory>
+    '';
+in
+{
+  options.myServices.tools.cloud.farm = {
+    instances = lib.mkOption {
+      description = "Instances names for the nextcloud Farm";
+      default = {};
+      type = lib.types.attrsOf (lib.types.submodule ({ name, config, ... }: {
+        options = {
+          nextcloud = lib.mkOption {
+            description = "Nextcloud version to use";
+            default = pkgs.webapps-nextcloud_27;
+            type = lib.types.package;
+          };
+          apps = lib.mkOption {
+            description = "Applications to use";
+            default = a: [];
+            #type = functionTo (listOf packages)
+            type = lib.types.unspecified;
+          };
+          config = lib.mkOption {
+            description = "Config keys";
+            default = {};
+            type = lib.types.attrsOf lib.types.unspecified;
+          };
+          secretsPath = lib.mkOption {
+            description = "Path in secrets to nextcloud config file";
+            default = "websites/${name}/nextcloud";
+            type = lib.types.str;
+          };
+          configOverride = lib.mkOption {
+            description = "Path to config override";
+            readOnly = true;
+            default = scfg."${config.secretsPath}";
+            type = lib.types.path;
+          };
+          phpPackage = lib.mkOption {
+            description = "PHP package to use";
+            default = pkgs.php81;
+            type = lib.types.package;
+            apply = v: (v.withExtensions({ enabled, all }: enabled ++ [ all.redis all.apcu all.opcache all.imagick all.sysvsem ])).override { extraConfig = ''
+              apc.enable_cli = 1
+              apc.enabled = 1
+            '';
+            };
+          };
+          rootDir = lib.mkOption {
+            description = "Instance root dirs";
+            readOnly = true;
+            type = lib.types.package;
+            default = config.nextcloud.withApps config.apps;
+          };
+          phpPoolName = lib.mkOption {
+            description = "Php pool name for the instance";
+            readOnly = true;
+            type = lib.types.str;
+            default = "nextcloud_farm_" + name;
+          };
+          phpBaseDir = lib.mkOption {
+            description = "Php basedir for the instance";
+            readOnly = true;
+            type = lib.types.str;
+            default = builtins.concatStringsSep ":" (
+              [ config.rootDir config.varDir ]
+              ++ config.rootDir.apps
+              ++ [ config.configOverride (overrideConfig config) ]
+              ++ (builtins.attrValues (additionalConfs config))
+            );
+          };
+          varDir = lib.mkOption {
+            description = "Instance var dir";
+            type = lib.types.path;
+            default = "/var/lib/nextcloud_farm/${name}";
+          };
+          vhost = lib.mkOption {
+            description = "Instance vhost config";
+            readOnly = true;
+            type = lib.types.str;
+            default = toVhost config;
+          };
+        };
+      }));
+    };
+  };
+
+  config = lib.mkIf (builtins.length (builtins.attrNames cfg.instances) > 0) {
+    systemd.services = lib.mapAttrs' (k: v: lib.nameValuePair ("phpfpm-" + v.phpPoolName) {
+      after = lib.mkAfter [ "postgresql.service" ];
+      wants = [ "postgresql.service" ];
+      serviceConfig.ExecStartPre =
+        "+${pkgs.writeScript "phpfpm-nextcloud-${k}-pre-start" ''
+          #!${pkgs.stdenv.shell}
+
+          install -m 0755 -o wwwrun -g wwwrun -d ${v.varDir} -d ${v.varDir}/config
+          ${builtins.concatStringsSep "\n" (lib.attrsets.mapAttrsToList (n: f:
+            "ln -sf ${f} ${v.varDir}/config/${n}.json"
+            ) (additionalConfs v))}
+          ln -sf ${overrideConfig v} ${v.varDir}/config/override.config.php
+        ''}";
+    }) cfg.instances;
+    services.phpfpm.pools = lib.mapAttrs' (k: v: lib.nameValuePair v.phpPoolName {
+      user = apacheUser;
+      group = apacheGroup;
+      settings = {
+        "listen.owner" = apacheUser;
+        "listen.group" = apacheGroup;
+        "pm" = "dynamic";
+        "pm.max_children" = "60";
+        "pm.start_servers" = "3";
+        "pm.min_spare_servers" = "3";
+        "pm.max_spare_servers" = "3";
+        "pm.process_idle_timeout" = "60";
+
+        "php_admin_value[output_buffering]" = "0";
+        "php_admin_value[max_execution_time]" = "1800";
+        "php_admin_value[zend_extension]" = "opcache";
+        "php_value[apc.enable_cli]" = "1";
+        "php_value[apc.enabled]" = "1";
+        #already enabled by default?
+        #"php_value[opcache.enable]" = "1";
+        "php_value[opcache.enable_cli]" = "1";
+        "php_value[opcache.interned_strings_buffer]" = "32";
+        "php_value[opcache.max_accelerated_files]" = "10000";
+        "php_value[opcache.memory_consumption]" = "128";
+        "php_value[opcache.save_comments]" = "1";
+        "php_value[opcache.revalidate_freq]" = "1";
+        "php_admin_value[memory_limit]" = "512M";
+
+        "php_admin_value[open_basedir]" = "/run/wrappers/bin/sendmail:${v.phpBaseDir}:/proc/cpuinfo:/proc/meminfo:/dev/urandom:/proc/self/fd:/tmp";
+        "php_admin_value[session.save_handler]" = "redis";
+        "php_admin_value[session.save_path]" = "'unix:///run/redis-php-sessions/redis.sock?persistent=1&prefix=Tools:NextcloudFarm:${k}:'";
+      };
+      phpPackage = v.phpPackage;
+    }) cfg.instances;
+    environment.systemPackages = let
+      toOcc = name: icfg: pkgs.writeScriptBin "nextcloud-occ-${name}" ''
+        #! ${pkgs.stdenv.shell}
+        cd ${icfg.rootDir}
+        NEXTCLOUD_CONFIG_DIR="${icfg.varDir}/config" \
+          exec \
+          sudo -E -u wwwrun ${icfg.phpPackage}/bin/php \
+          -d memory_limit=512M \
+          -c ${icfg.phpPackage}/etc/php.ini \
+          occ $*
+        '';
+      in lib.mapAttrsToList toOcc cfg.instances;
+    services.cron = {
+      enable = true;
+      systemCronJobs = let
+        toScript = name: icfg: pkgs.writeScriptBin "nextcloud-cron" ''
+          #! ${pkgs.stdenv.shell}
+          export LOCALE_ARCHIVE=/run/current-system/sw/lib/locale/locale-archive
+          export PATH=/run/wrappers/bin:$PATH
+          export NEXTCLOUD_CONFIG_DIR="${icfg.varDir}/config"
+          ${icfg.phpPackage}/bin/php -c ${icfg.phpPackage}/etc/php.ini -d memory_limit=512M -f ${icfg.rootDir}/cron.php
+          '';
+        toLine = name: icfg: ''
+          */5 * * * * wwwrun ${toScript name icfg}/bin/nextcloud-cron
+          '';
+        in lib.mapAttrsToList toLine cfg.instances;
+    };
+
+    secrets.keys = lib.mapAttrs' (name: v: lib.nameValuePair "${v.secretsPath}" {
+      user = "wwwrun";
+      group = "wwwrun";
+      permissions = "0600";
+      # Be careful when editing that: config from this file takes
+      # precedence over the regular one, but if a key got removed, it my
+      # still exist in the default config file
+      text = builtins.toJSON ( {
+        "datadirectory" = if name == "immae" then v.varDir else "${v.varDir}/data";
+
+        "appstoreenabled" = false;
+        "integrity.check.disabled" = true;
+        "updater.release.channel" = "stable";
+        "upgrade.disable-web" = true;
+
+        "memcache.local" = "\\OC\\Memcache\\APCu";
+
+        "htaccess.RewriteBase" = "/";
+
+        "loglevel" = 2;
+        "logtimezone" = "Europe/Paris";
+
+        "default_phone_region" = "FR";
+        "skeletondirectory" = "";
+        "theme" = "";
+      } // v.config);
+    }) cfg.instances;
+  };
+}