1 files changed, 108 insertions, 0 deletions
diff --git a/nixos/modules/services/databases/opentsdb.nix b/nixos/modules/services/databases/opentsdb.nix
new file mode 100644
index 00000000000..e873b2f7011
--- /dev/null
+++ b/nixos/modules/services/databases/opentsdb.nix
@@ -0,0 +1,108 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.opentsdb;
+
+  configFile = pkgs.writeText "opentsdb.conf" cfg.config;
+
+in {
+
+  ###### interface
+
+  options = {
+
+    services.opentsdb = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to run OpenTSDB.
+        '';
+      };
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.opentsdb;
+        defaultText = literalExpression "pkgs.opentsdb";
+        description = ''
+          OpenTSDB package to use.
+        '';
+      };
+
+      user = mkOption {
+        type = types.str;
+        default = "opentsdb";
+        description = ''
+          User account under which OpenTSDB runs.
+        '';
+      };
+
+      group = mkOption {
+        type = types.str;
+        default = "opentsdb";
+        description = ''
+          Group account under which OpenTSDB runs.
+        '';
+      };
+
+      port = mkOption {
+        type = types.int;
+        default = 4242;
+        description = ''
+          Which port OpenTSDB listens on.
+        '';
+      };
+
+      config = mkOption {
+        type = types.lines;
+        default = ''
+          tsd.core.auto_create_metrics = true
+          tsd.http.request.enable_chunked  = true
+        '';
+        description = ''
+          The contents of OpenTSDB's configuration file
+        '';
+      };
+
+    };
+
+  };
+
+  ###### implementation
+
+  config = mkIf config.services.opentsdb.enable {
+
+    systemd.services.opentsdb = {
+      description = "OpenTSDB Server";
+      wantedBy = [ "multi-user.target" ];
+      requires = [ "hbase.service" ];
+
+      environment.JAVA_HOME = "${pkgs.jre}";
+      path = [ pkgs.gnuplot ];
+
+      preStart =
+        ''
+        COMPRESSION=NONE HBASE_HOME=${config.services.hbase.package} ${cfg.package}/share/opentsdb/tools/create_table.sh
+        '';
+
+      serviceConfig = {
+        PermissionsStartOnly = true;
+        User = cfg.user;
+        Group = cfg.group;
+        ExecStart = "${cfg.package}/bin/tsdb tsd --staticroot=${cfg.package}/share/opentsdb/static --cachedir=/tmp/opentsdb --port=${toString cfg.port} --config=${configFile}";
+      };
+    };
+
+    users.users.opentsdb = {
+      description = "OpenTSDB Server user";
+      group = "opentsdb";
+      uid = config.ids.uids.opentsdb;
+    };
+
+    users.groups.opentsdb.gid = config.ids.gids.opentsdb;
+
+  };
+}