Add InfoService (#3)

buf/plugin/info/v1/info.proto

@@ -0,0 +1,63 @@
+// Copyright 2024 Buf Technologies, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package buf.plugin.info.v1;
+
+import "buf/validate/validate.proto";
+
+option go_package = "buf.build/gen/go/bufbuild/bufplugin/protocolbuffers/go/buf/plugin/info/v1";
+
+// Information about a plugin.
+message Info {
+  // The url for the plugin.
+  //
+  // This typically is the source control repository that contains the plugin's implementation.
+  string url = 1 [(buf.validate.field).string.uri = true];
+  // The license of the plugin.
+  License license = 2;
+  // Documentation for a plugin.
+  Doc doc = 3;
+}
+
+// A plugin license.
+message License {
+  // The SPDX license ID.
+  //
+  // See https://spdx.org/licenses.
+  string spdx_license_id = 1;
+  // The source of a license is either raw text, or a URL that contains the license.
+  oneof source {
+    option (buf.validate.oneof).required = true;
+
+    // The raw text of the license.
+    string text = 2;
+    // The url that contains the license
+    string url = 3 [(buf.validate.field).string.uri = true];
+  }
+}
+
+// Documentation for a plugin.
+message Doc {
+  // A short string describing the plugin.
+  //
+  // This is required.
+  string short = 1 [(buf.validate.field).required = true];
+  // A long string providing more details on using the plugin.
+  //
+  // When producing documentation for the plugin, this will be concatenated with
+  // the value from short with a newline separating short and long.
+  string long = 2;
+}

buf/plugin/info/v1/info_service.proto

@@ -0,0 +1,39 @@
+// Copyright 2024 Buf Technologies, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package buf.plugin.info.v1;
+
+import "buf/plugin/info/v1/info.proto";
+import "buf/validate/validate.proto";
+
+option go_package = "buf.build/gen/go/bufbuild/bufplugin/protocolbuffers/go/buf/plugin/info/v1";
+
+// The service that returns information about the plugin.
+service InfoService {
+  // GetInfo gets information about the plugin.
+  rpc GetInfo(GetInfoRequest) returns (GetInfoResponse) {
+    option idempotency_level = NO_SIDE_EFFECTS;
+  }
+}
+
+// A request to get information about a plugin.
+message GetInfoRequest {}
+
+// A response containing information about a plugin.
+message GetInfoResponse {
+  // The information about the plugin.
+  Info info = 1 [(buf.validate.field).required = true];
+}