minio service: add additional config options

Set access and secret key and disable browser.
Tests extended to do real operations against minio.

nixos/modules/services/web-servers/minio.nix

@@ -29,6 +29,40 @@ in
       description = "The config directory, for the access keys and other settings.";
     };
 
+    accessKey = mkOption {
+      default = "";
+      type = types.str;
+      description = ''
+        Access key of 5 to 20 characters in length that clients use to access the server.
+        This overrides the access key that is generated by minio on first startup and stored inside the
+        <literal>configDir</literal> directory.
+      '';
+    };
+
+    secretKey = mkOption {
+      default = "";
+      type = types.str;
+      description = ''
+        Specify the Secret key of 8 to 40 characters in length that clients use to access the server.
+        This overrides the secret key that is generated by minio on first startup and stored inside the
+        <literal>configDir</literal> directory.
+      '';
+    };
+
+    region = mkOption {
+      default = "us-east-1";
+      type = types.str;
+      description = ''
+        The physical location of the server. By default it is set to us-east-1, which is same as AWS S3's and Minio's default region.
+      '';
+    };
+
+    browser = mkOption {
+      default = true;
+      type = types.bool;
+      description = "Enable or disable access to web UI.";
+    };
+
     package = mkOption {
       default = pkgs.minio;
       defaultText = "pkgs.minio";
@@ -57,6 +91,14 @@ in
         Group = "minio";
         LimitNOFILE = 65536;
       };
+      environment = {
+        MINIO_REGION = "${cfg.region}";
+        MINIO_BROWSER = "${if cfg.browser then "on" else "off"}";
+      } // optionalAttrs (cfg.accessKey != "") {
+        MINIO_ACCESS_KEY = "${cfg.accessKey}";
+      } // optionalAttrs (cfg.secretKey != "") {
+        MINIO_SECRET_KEY = "${cfg.secretKey}";
+      };
     };
 
     users.extraUsers.minio = {

nixos/tests/minio.nix

@@ -4,8 +4,15 @@ import ./make-test.nix ({ pkgs, ...} : {
     maintainers = [ bachp ];
   };
 
+  nodes = {
     machine = { config, pkgs, ... }: {
-    services.minio.enable = true;
+      services.minio = {
+        enable = true;
+        accessKey = "BKIKJAA5BMMU2RHO6IBB";
+        secretKey = "V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12";
+      };
+      environment.systemPackages = [ pkgs.minio-client ];
+    };
   };
 
   testScript =
@@ -14,6 +21,12 @@ import ./make-test.nix ({ pkgs, ...} : {
       $machine->waitForUnit("minio.service");
       $machine->waitForOpenPort(9000);
       $machine->succeed("curl --fail http://localhost:9000/minio/index.html");
+
+      # Create a test bucket on the server
+      $machine->succeed("mc config host add minio http://localhost:9000 BKIKJAA5BMMU2RHO6IBB V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12 S3v4");
+      $machine->succeed("mc mb minio/test-bucket");
+      $machine->succeed("mc ls minio") =~ /test-bucket/ or die;
       $machine->shutdown;
+
     '';
 })