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reference implementation of go app

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This commit is contained in:
Ryan McGuire 2025-03-30 18:08:16 -04:00
parent b95fb8f90b
commit 4bd50b75b9
14 changed files with 1352 additions and 16 deletions
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63
Makefile Normal file
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CMD_NAME := demo-app # TODO: Update app name
.PHONY: all test build docker install clean proto check_protoc
VERSION ?= development # Default to "development" if VERSION is not set
APIVERSION := v1alpha1
API_DIR := api/$(APIVERSION)
PROTO_DIRS := $(wildcard proto/demo/app/*) # TODO: Update path (probably not demo)
PLATFORMS := linux/amd64 linux/arm64 darwin/amd64 darwin/arm64
OUTPUT_DIR := bin
VER_PKG := gitea.libretechconsulting.com/rmcguire/go-app/pkg/config.Version
DOCKER_IMG := gitea.libretechconsulting.com/rmcguire/go-http-server-with-otel
all: proto test build docker
proto: check_protoc $(API_DIR)
protoc --proto_path=proto --proto_path=proto/google \
--go_out=$(API_DIR) --go_opt=paths=source_relative \
--go-grpc_out=$(API_DIR) --go-grpc_opt=paths=source_relative \
--grpc-gateway_out=$(API_DIR) --grpc-gateway_opt=paths=source_relative \
--openapiv2_out=$(API_DIR) \
$(foreach dir, $(PROTO_DIRS), $(wildcard $(dir)/*.proto))
test:
go test -v ./...
build: test
@echo "Building for platforms: $(PLATFORMS)"
@for platform in $(PLATFORMS); do \
OS=$$(echo $$platform | cut -d/ -f1); \
ARCH=$$(echo $$platform | cut -d/ -f2); \
OUTPUT="$(OUTPUT_DIR)/$(CMD_NAME)-$$OS-$$ARCH"; \
GOOS=$$OS GOARCH=$$ARCH go build -ldflags "-X $(VER_PKG)=$(VERSION)" -o $$OUTPUT; \
echo "Built $$OUTPUT"; \
done
go build -ldflags "-X $(VER_PKG)=$(VERSION)" -o bin/${CMD_NAME}
schema:
go run . -schema > contrib/schema.json
docker:
@echo "Building Docker image $(DOCKER_IMG):$(VERSION)"
docker build \
--build-arg VER_PKG=$(VER_PKG) \
--build-arg VERSION=$(VERSION) \
-t $(DOCKER_IMG):$(VERSION) .
docker push $(DOCKER_IMG):$(VERSION)
install:
go install -v -ldflags "-X $(VER_PKG)=$(VERSION)" .
clean:
rm -rf bin/${CMD_NAME}
check_protoc:
@if ! command -v protoc-gen-go > /dev/null; then \
echo "Error: protoc-gen-go not found in PATH"; \
exit 1; \
fi
@if ! command -v protoc-gen-go-grpc > /dev/null; then \
echo "Error: protoc-gen-go-grpc not found in PATH"; \
exit 1; \
fi

6
TODO.md Normal file
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# Demo app TODO
- [ ] Rename project
- [ ] Finish grpc sample implementation
- [ ] Add Dockerfile
- [ ] Add gitea CI

210
api/v1alpha1/demo/app/v1alpha1/app.pb.go Normal file
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// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.36.6
// protoc v5.29.3
// source: demo/app/v1alpha1/app.proto
package demo
import (
_ "google.golang.org/genproto/googleapis/api/annotations"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
timestamppb "google.golang.org/protobuf/types/known/timestamppb"
reflect "reflect"
sync "sync"
unsafe "unsafe"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
// Options for random fact, in this case
// just a language
type GetDemoRequest struct {
state protoimpl.MessageState `protogen:"open.v1"`
Language *string `protobuf:"bytes,1,opt,name=language,proto3,oneof" json:"language,omitempty"`
unknownFields protoimpl.UnknownFields
sizeCache protoimpl.SizeCache
}
func (x *GetDemoRequest) Reset() {
*x = GetDemoRequest{}
mi := &file_demo_app_v1alpha1_app_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *GetDemoRequest) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*GetDemoRequest) ProtoMessage() {}
func (x *GetDemoRequest) ProtoReflect() protoreflect.Message {
mi := &file_demo_app_v1alpha1_app_proto_msgTypes[0]
if x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use GetDemoRequest.ProtoReflect.Descriptor instead.
func (*GetDemoRequest) Descriptor() ([]byte, []int) {
return file_demo_app_v1alpha1_app_proto_rawDescGZIP(), []int{0}
}
func (x *GetDemoRequest) GetLanguage() string {
if x != nil && x.Language != nil {
return *x.Language
}
return ""
}
// Returns a randome fact, because this is a demo app
// so what else do we do?
type GetDemoResponse struct {
state protoimpl.MessageState `protogen:"open.v1"`
Timestamp *timestamppb.Timestamp `protobuf:"bytes,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
Fact string `protobuf:"bytes,2,opt,name=fact,proto3" json:"fact,omitempty"`
Source string `protobuf:"bytes,3,opt,name=source,proto3" json:"source,omitempty"`
Language string `protobuf:"bytes,4,opt,name=language,proto3" json:"language,omitempty"`
unknownFields protoimpl.UnknownFields
sizeCache protoimpl.SizeCache
}
func (x *GetDemoResponse) Reset() {
*x = GetDemoResponse{}
mi := &file_demo_app_v1alpha1_app_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *GetDemoResponse) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*GetDemoResponse) ProtoMessage() {}
func (x *GetDemoResponse) ProtoReflect() protoreflect.Message {
mi := &file_demo_app_v1alpha1_app_proto_msgTypes[1]
if x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use GetDemoResponse.ProtoReflect.Descriptor instead.
func (*GetDemoResponse) Descriptor() ([]byte, []int) {
return file_demo_app_v1alpha1_app_proto_rawDescGZIP(), []int{1}
}
func (x *GetDemoResponse) GetTimestamp() *timestamppb.Timestamp {
if x != nil {
return x.Timestamp
}
return nil
}
func (x *GetDemoResponse) GetFact() string {
if x != nil {
return x.Fact
}
return ""
}
func (x *GetDemoResponse) GetSource() string {
if x != nil {
return x.Source
}
return ""
}
func (x *GetDemoResponse) GetLanguage() string {
if x != nil {
return x.Language
}
return ""
}
var File_demo_app_v1alpha1_app_proto protoreflect.FileDescriptor
const file_demo_app_v1alpha1_app_proto_rawDesc = "" +
"\n" +
"\x1bdemo/app/v1alpha1/app.proto\x12\x11demo.app.v1alpha1\x1a\x1cgoogle/api/annotations.proto\x1a\x1fgoogle/protobuf/timestamp.proto\">\n" +
"\x0eGetDemoRequest\x12\x1f\n" +
"\blanguage\x18\x01 \x01(\tH\x00R\blanguage\x88\x01\x01B\v\n" +
"\t_language\"\x93\x01\n" +
"\x0fGetDemoResponse\x128\n" +
"\ttimestamp\x18\x01 \x01(\v2\x1a.google.protobuf.TimestampR\ttimestamp\x12\x12\n" +
"\x04fact\x18\x02 \x01(\tR\x04fact\x12\x16\n" +
"\x06source\x18\x03 \x01(\tR\x06source\x12\x1a\n" +
"\blanguage\x18\x04 \x01(\tR\blanguage2z\n" +
"\x0eDemoAppService\x12h\n" +
"\aGetDemo\x12!.demo.app.v1alpha1.GetDemoRequest\x1a\".demo.app.v1alpha1.GetDemoResponse\"\x16\x82\xd3\xe4\x93\x02\x10\x12\x0e/v1alpha1/demoBSZQgitea.libretechconsulting.com/rmcguire/go-http-server-with-otel/api/v1alpha1/demob\x06proto3"
var (
file_demo_app_v1alpha1_app_proto_rawDescOnce sync.Once
file_demo_app_v1alpha1_app_proto_rawDescData []byte
)
func file_demo_app_v1alpha1_app_proto_rawDescGZIP() []byte {
file_demo_app_v1alpha1_app_proto_rawDescOnce.Do(func() {
file_demo_app_v1alpha1_app_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_demo_app_v1alpha1_app_proto_rawDesc), len(file_demo_app_v1alpha1_app_proto_rawDesc)))
})
return file_demo_app_v1alpha1_app_proto_rawDescData
}
var file_demo_app_v1alpha1_app_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
var file_demo_app_v1alpha1_app_proto_goTypes = []any{
(*GetDemoRequest)(nil), // 0: demo.app.v1alpha1.GetDemoRequest
(*GetDemoResponse)(nil), // 1: demo.app.v1alpha1.GetDemoResponse
(*timestamppb.Timestamp)(nil), // 2: google.protobuf.Timestamp
}
var file_demo_app_v1alpha1_app_proto_depIdxs = []int32{
2, // 0: demo.app.v1alpha1.GetDemoResponse.timestamp:type_name -> google.protobuf.Timestamp
0, // 1: demo.app.v1alpha1.DemoAppService.GetDemo:input_type -> demo.app.v1alpha1.GetDemoRequest
1, // 2: demo.app.v1alpha1.DemoAppService.GetDemo:output_type -> demo.app.v1alpha1.GetDemoResponse
2, // [2:3] is the sub-list for method output_type
1, // [1:2] is the sub-list for method input_type
1, // [1:1] is the sub-list for extension type_name
1, // [1:1] is the sub-list for extension extendee
0, // [0:1] is the sub-list for field type_name
}
func init() { file_demo_app_v1alpha1_app_proto_init() }
func file_demo_app_v1alpha1_app_proto_init() {
if File_demo_app_v1alpha1_app_proto != nil {
return
}
file_demo_app_v1alpha1_app_proto_msgTypes[0].OneofWrappers = []any{}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: unsafe.Slice(unsafe.StringData(file_demo_app_v1alpha1_app_proto_rawDesc), len(file_demo_app_v1alpha1_app_proto_rawDesc)),
NumEnums: 0,
NumMessages: 2,
NumExtensions: 0,
NumServices: 1,
},
GoTypes: file_demo_app_v1alpha1_app_proto_goTypes,
DependencyIndexes: file_demo_app_v1alpha1_app_proto_depIdxs,
MessageInfos: file_demo_app_v1alpha1_app_proto_msgTypes,
}.Build()
File_demo_app_v1alpha1_app_proto = out.File
file_demo_app_v1alpha1_app_proto_goTypes = nil
file_demo_app_v1alpha1_app_proto_depIdxs = nil
}

163
api/v1alpha1/demo/app/v1alpha1/app.pb.gw.go Normal file
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// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
// source: demo/app/v1alpha1/app.proto
/*
Package demo is a reverse proxy.
It translates gRPC into RESTful JSON APIs.
*/
package demo
import (
"context"
"errors"
"io"
"net/http"
"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
"github.com/grpc-ecosystem/grpc-gateway/v2/utilities"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/proto"
)
// Suppress "imported and not used" errors
var (
_ codes.Code
_ io.Reader
_ status.Status
_ = errors.New
_ = runtime.String
_ = utilities.NewDoubleArray
_ = metadata.Join
)
var filter_DemoAppService_GetDemo_0 = &utilities.DoubleArray{Encoding: map[string]int{}, Base: []int(nil), Check: []int(nil)}
func request_DemoAppService_GetDemo_0(ctx context.Context, marshaler runtime.Marshaler, client DemoAppServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
var (
protoReq GetDemoRequest
metadata runtime.ServerMetadata
)
io.Copy(io.Discard, req.Body)
if err := req.ParseForm(); err != nil {
return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
}
if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_DemoAppService_GetDemo_0); err != nil {
return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
}
msg, err := client.GetDemo(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
return msg, metadata, err
}
func local_request_DemoAppService_GetDemo_0(ctx context.Context, marshaler runtime.Marshaler, server DemoAppServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
var (
protoReq GetDemoRequest
metadata runtime.ServerMetadata
)
if err := req.ParseForm(); err != nil {
return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
}
if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_DemoAppService_GetDemo_0); err != nil {
return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
}
msg, err := server.GetDemo(ctx, &protoReq)
return msg, metadata, err
}
// RegisterDemoAppServiceHandlerServer registers the http handlers for service DemoAppService to "mux".
// UnaryRPC :call DemoAppServiceServer directly.
// StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
// Note that using this registration option will cause many gRPC library features to stop working. Consider using RegisterDemoAppServiceHandlerFromEndpoint instead.
// GRPC interceptors will not work for this type of registration. To use interceptors, you must use the "runtime.WithMiddlewares" option in the "runtime.NewServeMux" call.
func RegisterDemoAppServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux, server DemoAppServiceServer) error {
mux.Handle(http.MethodGet, pattern_DemoAppService_GetDemo_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
ctx, cancel := context.WithCancel(req.Context())
defer cancel()
var stream runtime.ServerTransportStream
ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/demo.app.v1alpha1.DemoAppService/GetDemo", runtime.WithHTTPPathPattern("/v1alpha1/demo"))
if err != nil {
runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
return
}
resp, md, err := local_request_DemoAppService_GetDemo_0(annotatedContext, inboundMarshaler, server, req, pathParams)
md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
if err != nil {
runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
return
}
forward_DemoAppService_GetDemo_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
})
return nil
}
// RegisterDemoAppServiceHandlerFromEndpoint is same as RegisterDemoAppServiceHandler but
// automatically dials to "endpoint" and closes the connection when "ctx" gets done.
func RegisterDemoAppServiceHandlerFromEndpoint(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) (err error) {
conn, err := grpc.NewClient(endpoint, opts...)
if err != nil {
return err
}
defer func() {
if err != nil {
if cerr := conn.Close(); cerr != nil {
grpclog.Errorf("Failed to close conn to %s: %v", endpoint, cerr)
}
return
}
go func() {
<-ctx.Done()
if cerr := conn.Close(); cerr != nil {
grpclog.Errorf("Failed to close conn to %s: %v", endpoint, cerr)
}
}()
}()
return RegisterDemoAppServiceHandler(ctx, mux, conn)
}
// RegisterDemoAppServiceHandler registers the http handlers for service DemoAppService to "mux".
// The handlers forward requests to the grpc endpoint over "conn".
func RegisterDemoAppServiceHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc.ClientConn) error {
return RegisterDemoAppServiceHandlerClient(ctx, mux, NewDemoAppServiceClient(conn))
}
// RegisterDemoAppServiceHandlerClient registers the http handlers for service DemoAppService
// to "mux". The handlers forward requests to the grpc endpoint over the given implementation of "DemoAppServiceClient".
// Note: the gRPC framework executes interceptors within the gRPC handler. If the passed in "DemoAppServiceClient"
// doesn't go through the normal gRPC flow (creating a gRPC client etc.) then it will be up to the passed in
// "DemoAppServiceClient" to call the correct interceptors. This client ignores the HTTP middlewares.
func RegisterDemoAppServiceHandlerClient(ctx context.Context, mux *runtime.ServeMux, client DemoAppServiceClient) error {
mux.Handle(http.MethodGet, pattern_DemoAppService_GetDemo_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
ctx, cancel := context.WithCancel(req.Context())
defer cancel()
inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/demo.app.v1alpha1.DemoAppService/GetDemo", runtime.WithHTTPPathPattern("/v1alpha1/demo"))
if err != nil {
runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
return
}
resp, md, err := request_DemoAppService_GetDemo_0(annotatedContext, inboundMarshaler, client, req, pathParams)
annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
if err != nil {
runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
return
}
forward_DemoAppService_GetDemo_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
})
return nil
}
var (
pattern_DemoAppService_GetDemo_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1alpha1", "demo"}, ""))
)
var (
forward_DemoAppService_GetDemo_0 = runtime.ForwardResponseMessage
)

99
api/v1alpha1/demo/app/v1alpha1/app.swagger.json Normal file
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{
"swagger": "2.0",
"info": {
"title": "demo/app/v1alpha1/app.proto",
"version": "version not set"
},
"tags": [
{
"name": "DemoAppService"
}
],
"consumes": [
"application/json"
],
"produces": [
"application/json"
],
"paths": {
"/v1alpha1/demo": {
"get": {
"operationId": "DemoAppService_GetDemo",
"responses": {
"200": {
"description": "A successful response.",
"schema": {
"$ref": "#/definitions/v1alpha1GetDemoResponse"
}
},
"default": {
"description": "An unexpected error response.",
"schema": {
"$ref": "#/definitions/rpcStatus"
}
}
},
"parameters": [
{
"name": "language",
"in": "query",
"required": false,
"type": "string"
}
],
"tags": [
"DemoAppService"
]
}
}
},
"definitions": {
"protobufAny": {
"type": "object",
"properties": {
"@type": {
"type": "string"
}
},
"additionalProperties": {}
},
"rpcStatus": {
"type": "object",
"properties": {
"code": {
"type": "integer",
"format": "int32"
},
"message": {
"type": "string"
},
"details": {
"type": "array",
"items": {
"type": "object",
"$ref": "#/definitions/protobufAny"
}
}
}
},
"v1alpha1GetDemoResponse": {
"type": "object",
"properties": {
"timestamp": {
"type": "string",
"format": "date-time"
},
"fact": {
"type": "string"
},
"source": {
"type": "string"
},
"language": {
"type": "string"
}
},
"title": "Returns a randome fact, because this is a demo app\nso what else do we do?"
}
}
}

121
api/v1alpha1/demo/app/v1alpha1/app_grpc.pb.go Normal file
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// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
// versions:
// - protoc-gen-go-grpc v1.5.1
// - protoc v5.29.3
// source: demo/app/v1alpha1/app.proto
package demo
import (
context "context"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
)
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
// Requires gRPC-Go v1.64.0 or later.
const _ = grpc.SupportPackageIsVersion9
const (
DemoAppService_GetDemo_FullMethodName = "/demo.app.v1alpha1.DemoAppService/GetDemo"
)
// DemoAppServiceClient is the client API for DemoAppService service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type DemoAppServiceClient interface {
GetDemo(ctx context.Context, in *GetDemoRequest, opts ...grpc.CallOption) (*GetDemoResponse, error)
}
type demoAppServiceClient struct {
cc grpc.ClientConnInterface
}
func NewDemoAppServiceClient(cc grpc.ClientConnInterface) DemoAppServiceClient {
return &demoAppServiceClient{cc}
}
func (c *demoAppServiceClient) GetDemo(ctx context.Context, in *GetDemoRequest, opts ...grpc.CallOption) (*GetDemoResponse, error) {
cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
out := new(GetDemoResponse)
err := c.cc.Invoke(ctx, DemoAppService_GetDemo_FullMethodName, in, out, cOpts...)
if err != nil {
return nil, err
}
return out, nil
}
// DemoAppServiceServer is the server API for DemoAppService service.
// All implementations must embed UnimplementedDemoAppServiceServer
// for forward compatibility.
type DemoAppServiceServer interface {
GetDemo(context.Context, *GetDemoRequest) (*GetDemoResponse, error)
mustEmbedUnimplementedDemoAppServiceServer()
}
// UnimplementedDemoAppServiceServer must be embedded to have
// forward compatible implementations.
//
// NOTE: this should be embedded by value instead of pointer to avoid a nil
// pointer dereference when methods are called.
type UnimplementedDemoAppServiceServer struct{}
func (UnimplementedDemoAppServiceServer) GetDemo(context.Context, *GetDemoRequest) (*GetDemoResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method GetDemo not implemented")
}
func (UnimplementedDemoAppServiceServer) mustEmbedUnimplementedDemoAppServiceServer() {}
func (UnimplementedDemoAppServiceServer) testEmbeddedByValue() {}
// UnsafeDemoAppServiceServer may be embedded to opt out of forward compatibility for this service.
// Use of this interface is not recommended, as added methods to DemoAppServiceServer will
// result in compilation errors.
type UnsafeDemoAppServiceServer interface {
mustEmbedUnimplementedDemoAppServiceServer()
}
func RegisterDemoAppServiceServer(s grpc.ServiceRegistrar, srv DemoAppServiceServer) {
// If the following call pancis, it indicates UnimplementedDemoAppServiceServer was
// embedded by pointer and is nil. This will cause panics if an
// unimplemented method is ever invoked, so we test this at initialization
// time to prevent it from happening at runtime later due to I/O.
if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
t.testEmbeddedByValue()
}
s.RegisterService(&DemoAppService_ServiceDesc, srv)
}
func _DemoAppService_GetDemo_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(GetDemoRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(DemoAppServiceServer).GetDemo(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: DemoAppService_GetDemo_FullMethodName,
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(DemoAppServiceServer).GetDemo(ctx, req.(*GetDemoRequest))
}
return interceptor(ctx, in, info, handler)
}
// DemoAppService_ServiceDesc is the grpc.ServiceDesc for DemoAppService service.
// It's only intended for direct use with grpc.RegisterService,
// and not to be introspected or modified (even as a copy)
var DemoAppService_ServiceDesc = grpc.ServiceDesc{
ServiceName: "demo.app.v1alpha1.DemoAppService",
HandlerType: (*DemoAppServiceServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "GetDemo",
Handler: _DemoAppService_GetDemo_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "demo/app/v1alpha1/app.proto",
}

27
main.go
View File

@ -13,7 +13,6 @@ import (
"context"
"flag"
"fmt"
"net/http"
"os"
"os/signal"
@ -24,6 +23,7 @@ import (
optshttp "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/http/opts"
"gitea.libretechconsulting.com/rmcguire/go-http-server-with-otel/pkg/config"
"gitea.libretechconsulting.com/rmcguire/go-http-server-with-otel/pkg/demohttp"
)
var flagSchema bool
@ -32,12 +32,10 @@ func main() {
ctx, cncl := signal.NotifyContext(context.Background(), os.Interrupt, unix.SIGTERM)
defer cncl()
// This will be loaded by go-app courtesy of MustLoadConfigInto, which will
// combine our sample configuration along with the embedded go-app AppConfig
demoAppConfig := &config.DemoConfig{}
// Load configuration and setup logging
ctx, demoApp := app.MustLoadConfigInto(ctx, demoAppConfig)
// Load configuration and setup logging. The go-app framework
// will handle loading config and environment into our demo
// app config struct which embeds app.AooConfig
ctx, demoApp := app.MustLoadConfigInto(ctx, &config.DemoConfig{})
// Print schema if that's all we have to do
if flagSchema {
@ -47,19 +45,16 @@ func main() {
log.Debug().Any("demoAppMergedConfig", demoApp).Msg("demo app config prepared")
// Prepare servers
demoHTTP := demohttp.NewDemoHTTPServer(ctx, demoApp)
// Prepare app
app := &app.App{
AppContext: ctx,
HTTP: &optshttp.AppHTTP{
Funcs: []optshttp.HTTPFunc{
{
Path: "/test",
HandlerFunc: func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
w.Write([]byte("http test route"))
},
},
},
Ctx: ctx,
HealthChecks: demoHTTP.GetHealthCheckFuncs(),
Funcs: demoHTTP.GetHandleFuncs(),
},
}

44
pkg/demohttp/server.go Normal file
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@ -0,0 +1,44 @@
package demohttp
import (
"context"
"net/http"
"gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/http/opts"
"gitea.libretechconsulting.com/rmcguire/go-http-server-with-otel/pkg/config"
)
type DemoHTTPServer struct {
ctx context.Context
cfg *config.DemoConfig
}
func NewDemoHTTPServer(ctx context.Context, cfg *config.DemoConfig) *DemoHTTPServer {
return &DemoHTTPServer{
ctx: ctx,
cfg: cfg,
}
}
func (dh *DemoHTTPServer) GetHandleFuncs() []opts.HTTPFunc {
// TODO: Implement real http handle funcs
return []opts.HTTPFunc{
{
Path: "/test",
HandlerFunc: func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
w.Write([]byte("unimplemented demo app"))
},
},
}
}
func (dh *DemoHTTPServer) GetHealthCheckFuncs() []opts.HealthCheckFunc {
return []opts.HealthCheckFunc{
func(ctx context.Context) error {
// TODO: Implement real health checks
return nil
},
}
}

28
proto/demo/app/v1alpha1/app.proto Normal file
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@ -0,0 +1,28 @@
syntax = "proto3";
package demo.app.v1alpha1;
import "google/api/annotations.proto";
import "google/protobuf/timestamp.proto";
option go_package = "gitea.libretechconsulting.com/rmcguire/go-http-server-with-otel/api/v1alpha1/demo";
// Options for random fact, in this case
// just a language
message GetDemoRequest {
optional string language = 1;
}
// Returns a randome fact, because this is a demo app
// so what else do we do?
message GetDemoResponse {
google.protobuf.Timestamp timestamp = 1;
string fact = 2;
string source = 3;
string language = 4;
}
service DemoAppService {
rpc GetDemo(GetDemoRequest) returns (GetDemoResponse) {
option (google.api.http) = {get: "/v1alpha1/demo"}; // grpc-gateway endpoint
}
}

22
proto/google/README.md Normal file
View File

@ -0,0 +1,22 @@
# Google API Proto
These are required for grpc-gateway. Ideally these are either
added to a git submodule, retrieved from a Makefile, downloaded by
buf, or retrieved by a CI job.
**These are not guaranteed to be up to date**
## Repo and Files
These come from the following repo, and are required for
grpc gateway [per their documentation]()
* Repo: [googleapis git repo](https://github.com/googleapis/googleapis)
* Docs: [grpc-gateay docs](https://github.com/grpc-ecosystem/grpc-gateway?tab=readme-ov-file#2-with-custom-annotations)
### Files
- [annotations.proto](https://raw.githubusercontent.com/googleapis/googleapis/refs/heads/master/google/api/annotations.proto)
- [field_behavior.proto](https://github.com/googleapis/googleapis/raw/refs/heads/master/google/api/field_behavior.proto)
- [http.proto](https://github.com/googleapis/googleapis/raw/refs/heads/master/google/api/http.proto)
- [httpbody.proto](https://github.com/googleapis/googleapis/raw/refs/heads/master/google/api/httpbody.proto)

31
proto/google/api/annotations.proto Normal file
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@ -0,0 +1,31 @@
// Copyright 2025 Google LLC
//
// 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 google.api;
import "google/api/http.proto";
import "google/protobuf/descriptor.proto";
option go_package = "google.golang.org/genproto/googleapis/api/annotations;annotations";
option java_multiple_files = true;
option java_outer_classname = "AnnotationsProto";
option java_package = "com.google.api";
option objc_class_prefix = "GAPI";
extend google.protobuf.MethodOptions {
// See `HttpRule`.
HttpRule http = 72295728;
}

104
proto/google/api/field_behavior.proto Normal file
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@ -0,0 +1,104 @@
// Copyright 2025 Google LLC
//
// 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 google.api;
import "google/protobuf/descriptor.proto";
option go_package = "google.golang.org/genproto/googleapis/api/annotations;annotations";
option java_multiple_files = true;
option java_outer_classname = "FieldBehaviorProto";
option java_package = "com.google.api";
option objc_class_prefix = "GAPI";
extend google.protobuf.FieldOptions {
// A designation of a specific field behavior (required, output only, etc.)
// in protobuf messages.
//
// Examples:
//
// string name = 1 [(google.api.field_behavior) = REQUIRED];
// State state = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
// google.protobuf.Duration ttl = 1
// [(google.api.field_behavior) = INPUT_ONLY];
// google.protobuf.Timestamp expire_time = 1
// [(google.api.field_behavior) = OUTPUT_ONLY,
// (google.api.field_behavior) = IMMUTABLE];
repeated google.api.FieldBehavior field_behavior = 1052 [packed = false];
}
// An indicator of the behavior of a given field (for example, that a field
// is required in requests, or given as output but ignored as input).
// This **does not** change the behavior in protocol buffers itself; it only
// denotes the behavior and may affect how API tooling handles the field.
//
// Note: This enum **may** receive new values in the future.
enum FieldBehavior {
// Conventional default for enums. Do not use this.
FIELD_BEHAVIOR_UNSPECIFIED = 0;
// Specifically denotes a field as optional.
// While all fields in protocol buffers are optional, this may be specified
// for emphasis if appropriate.
OPTIONAL = 1;
// Denotes a field as required.
// This indicates that the field **must** be provided as part of the request,
// and failure to do so will cause an error (usually `INVALID_ARGUMENT`).
REQUIRED = 2;
// Denotes a field as output only.
// This indicates that the field is provided in responses, but including the
// field in a request does nothing (the server *must* ignore it and
// *must not* throw an error as a result of the field's presence).
OUTPUT_ONLY = 3;
// Denotes a field as input only.
// This indicates that the field is provided in requests, and the
// corresponding field is not included in output.
INPUT_ONLY = 4;
// Denotes a field as immutable.
// This indicates that the field may be set once in a request to create a
// resource, but may not be changed thereafter.
IMMUTABLE = 5;
// Denotes that a (repeated) field is an unordered list.
// This indicates that the service may provide the elements of the list
// in any arbitrary order, rather than the order the user originally
// provided. Additionally, the list's order may or may not be stable.
UNORDERED_LIST = 6;
// Denotes that this field returns a non-empty default value if not set.
// This indicates that if the user provides the empty value in a request,
// a non-empty value will be returned. The user will not be aware of what
// non-empty value to expect.
NON_EMPTY_DEFAULT = 7;
// Denotes that the field in a resource (a message annotated with
// google.api.resource) is used in the resource name to uniquely identify the
// resource. For AIP-compliant APIs, this should only be applied to the
// `name` field on the resource.
//
// This behavior should not be applied to references to other resources within
// the message.
//
// The identifier field of resources often have different field behavior
// depending on the request it is embedded in (e.g. for Create methods name
// is optional and unused, while for Update methods it is required). Instead
// of method-specific annotations, only `IDENTIFIER` is required.
IDENTIFIER = 8;
}

370
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@ -0,0 +1,370 @@
// Copyright 2025 Google LLC
//
// 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 google.api;
option go_package = "google.golang.org/genproto/googleapis/api/annotations;annotations";
option java_multiple_files = true;
option java_outer_classname = "HttpProto";
option java_package = "com.google.api";
option objc_class_prefix = "GAPI";
// Defines the HTTP configuration for an API service. It contains a list of
// [HttpRule][google.api.HttpRule], each specifying the mapping of an RPC method
// to one or more HTTP REST API methods.
message Http {
// A list of HTTP configuration rules that apply to individual API methods.
//
// **NOTE:** All service configuration rules follow "last one wins" order.
repeated HttpRule rules = 1;
// When set to true, URL path parameters will be fully URI-decoded except in
// cases of single segment matches in reserved expansion, where "%2F" will be
// left encoded.
//
// The default behavior is to not decode RFC 6570 reserved characters in multi
// segment matches.
bool fully_decode_reserved_expansion = 2;
}
// gRPC Transcoding
//
// gRPC Transcoding is a feature for mapping between a gRPC method and one or
// more HTTP REST endpoints. It allows developers to build a single API service
// that supports both gRPC APIs and REST APIs. Many systems, including [Google
// APIs](https://github.com/googleapis/googleapis),
// [Cloud Endpoints](https://cloud.google.com/endpoints), [gRPC
// Gateway](https://github.com/grpc-ecosystem/grpc-gateway),
// and [Envoy](https://github.com/envoyproxy/envoy) proxy support this feature
// and use it for large scale production services.
//
// `HttpRule` defines the schema of the gRPC/REST mapping. The mapping specifies
// how different portions of the gRPC request message are mapped to the URL
// path, URL query parameters, and HTTP request body. It also controls how the
// gRPC response message is mapped to the HTTP response body. `HttpRule` is
// typically specified as an `google.api.http` annotation on the gRPC method.
//
// Each mapping specifies a URL path template and an HTTP method. The path
// template may refer to one or more fields in the gRPC request message, as long
// as each field is a non-repeated field with a primitive (non-message) type.
// The path template controls how fields of the request message are mapped to
// the URL path.
//
// Example:
//
// service Messaging {
// rpc GetMessage(GetMessageRequest) returns (Message) {
// option (google.api.http) = {
// get: "/v1/{name=messages/*}"
// };
// }
// }
// message GetMessageRequest {
// string name = 1; // Mapped to URL path.
// }
// message Message {
// string text = 1; // The resource content.
// }
//
// This enables an HTTP REST to gRPC mapping as below:
//
// - HTTP: `GET /v1/messages/123456`
// - gRPC: `GetMessage(name: "messages/123456")`
//
// Any fields in the request message which are not bound by the path template
// automatically become HTTP query parameters if there is no HTTP request body.
// For example:
//
// service Messaging {
// rpc GetMessage(GetMessageRequest) returns (Message) {
// option (google.api.http) = {
// get:"/v1/messages/{message_id}"
// };
// }
// }
// message GetMessageRequest {
// message SubMessage {
// string subfield = 1;
// }
// string message_id = 1; // Mapped to URL path.
// int64 revision = 2; // Mapped to URL query parameter `revision`.
// SubMessage sub = 3; // Mapped to URL query parameter `sub.subfield`.
// }
//
// This enables a HTTP JSON to RPC mapping as below:
//
// - HTTP: `GET /v1/messages/123456?revision=2&sub.subfield=foo`
// - gRPC: `GetMessage(message_id: "123456" revision: 2 sub:
// SubMessage(subfield: "foo"))`
//
// Note that fields which are mapped to URL query parameters must have a
// primitive type or a repeated primitive type or a non-repeated message type.
// In the case of a repeated type, the parameter can be repeated in the URL
// as `...?param=A&param=B`. In the case of a message type, each field of the
// message is mapped to a separate parameter, such as
// `...?foo.a=A&foo.b=B&foo.c=C`.
//
// For HTTP methods that allow a request body, the `body` field
// specifies the mapping. Consider a REST update method on the
// message resource collection:
//
// service Messaging {
// rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
// option (google.api.http) = {
// patch: "/v1/messages/{message_id}"
// body: "message"
// };
// }
// }
// message UpdateMessageRequest {
// string message_id = 1; // mapped to the URL
// Message message = 2; // mapped to the body
// }
//
// The following HTTP JSON to RPC mapping is enabled, where the
// representation of the JSON in the request body is determined by
// protos JSON encoding:
//
// - HTTP: `PATCH /v1/messages/123456 { "text": "Hi!" }`
// - gRPC: `UpdateMessage(message_id: "123456" message { text: "Hi!" })`
//
// The special name `*` can be used in the body mapping to define that
// every field not bound by the path template should be mapped to the
// request body. This enables the following alternative definition of
// the update method:
//
// service Messaging {
// rpc UpdateMessage(Message) returns (Message) {
// option (google.api.http) = {
// patch: "/v1/messages/{message_id}"
// body: "*"
// };
// }
// }
// message Message {
// string message_id = 1;
// string text = 2;
// }
//
//
// The following HTTP JSON to RPC mapping is enabled:
//
// - HTTP: `PATCH /v1/messages/123456 { "text": "Hi!" }`
// - gRPC: `UpdateMessage(message_id: "123456" text: "Hi!")`
//
// Note that when using `*` in the body mapping, it is not possible to
// have HTTP parameters, as all fields not bound by the path end in
// the body. This makes this option more rarely used in practice when
// defining REST APIs. The common usage of `*` is in custom methods
// which don't use the URL at all for transferring data.
//
// It is possible to define multiple HTTP methods for one RPC by using
// the `additional_bindings` option. Example:
//
// service Messaging {
// rpc GetMessage(GetMessageRequest) returns (Message) {
// option (google.api.http) = {
// get: "/v1/messages/{message_id}"
// additional_bindings {
// get: "/v1/users/{user_id}/messages/{message_id}"
// }
// };
// }
// }
// message GetMessageRequest {
// string message_id = 1;
// string user_id = 2;
// }
//
// This enables the following two alternative HTTP JSON to RPC mappings:
//
// - HTTP: `GET /v1/messages/123456`
// - gRPC: `GetMessage(message_id: "123456")`
//
// - HTTP: `GET /v1/users/me/messages/123456`
// - gRPC: `GetMessage(user_id: "me" message_id: "123456")`
//
// Rules for HTTP mapping
//
// 1. Leaf request fields (recursive expansion nested messages in the request
// message) are classified into three categories:
// - Fields referred by the path template. They are passed via the URL path.
// - Fields referred by the [HttpRule.body][google.api.HttpRule.body]. They
// are passed via the HTTP
// request body.
// - All other fields are passed via the URL query parameters, and the
// parameter name is the field path in the request message. A repeated
// field can be represented as multiple query parameters under the same
// name.
// 2. If [HttpRule.body][google.api.HttpRule.body] is "*", there is no URL
// query parameter, all fields
// are passed via URL path and HTTP request body.
// 3. If [HttpRule.body][google.api.HttpRule.body] is omitted, there is no HTTP
// request body, all
// fields are passed via URL path and URL query parameters.
//
// Path template syntax
//
// Template = "/" Segments [ Verb ] ;
// Segments = Segment { "/" Segment } ;
// Segment = "*" | "**" | LITERAL | Variable ;
// Variable = "{" FieldPath [ "=" Segments ] "}" ;
// FieldPath = IDENT { "." IDENT } ;
// Verb = ":" LITERAL ;
//
// The syntax `*` matches a single URL path segment. The syntax `**` matches
// zero or more URL path segments, which must be the last part of the URL path
// except the `Verb`.
//
// The syntax `Variable` matches part of the URL path as specified by its
// template. A variable template must not contain other variables. If a variable
// matches a single path segment, its template may be omitted, e.g. `{var}`
// is equivalent to `{var=*}`.
//
// The syntax `LITERAL` matches literal text in the URL path. If the `LITERAL`
// contains any reserved character, such characters should be percent-encoded
// before the matching.
//
// If a variable contains exactly one path segment, such as `"{var}"` or
// `"{var=*}"`, when such a variable is expanded into a URL path on the client
// side, all characters except `[-_.~0-9a-zA-Z]` are percent-encoded. The
// server side does the reverse decoding. Such variables show up in the
// [Discovery
// Document](https://developers.google.com/discovery/v1/reference/apis) as
// `{var}`.
//
// If a variable contains multiple path segments, such as `"{var=foo/*}"`
// or `"{var=**}"`, when such a variable is expanded into a URL path on the
// client side, all characters except `[-_.~/0-9a-zA-Z]` are percent-encoded.
// The server side does the reverse decoding, except "%2F" and "%2f" are left
// unchanged. Such variables show up in the
// [Discovery
// Document](https://developers.google.com/discovery/v1/reference/apis) as
// `{+var}`.
//
// Using gRPC API Service Configuration
//
// gRPC API Service Configuration (service config) is a configuration language
// for configuring a gRPC service to become a user-facing product. The
// service config is simply the YAML representation of the `google.api.Service`
// proto message.
//
// As an alternative to annotating your proto file, you can configure gRPC
// transcoding in your service config YAML files. You do this by specifying a
// `HttpRule` that maps the gRPC method to a REST endpoint, achieving the same
// effect as the proto annotation. This can be particularly useful if you
// have a proto that is reused in multiple services. Note that any transcoding
// specified in the service config will override any matching transcoding
// configuration in the proto.
//
// The following example selects a gRPC method and applies an `HttpRule` to it:
//
// http:
// rules:
// - selector: example.v1.Messaging.GetMessage
// get: /v1/messages/{message_id}/{sub.subfield}
//
// Special notes
//
// When gRPC Transcoding is used to map a gRPC to JSON REST endpoints, the
// proto to JSON conversion must follow the [proto3
// specification](https://developers.google.com/protocol-buffers/docs/proto3#json).
//
// While the single segment variable follows the semantics of
// [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2 Simple String
// Expansion, the multi segment variable **does not** follow RFC 6570 Section
// 3.2.3 Reserved Expansion. The reason is that the Reserved Expansion
// does not expand special characters like `?` and `#`, which would lead
// to invalid URLs. As the result, gRPC Transcoding uses a custom encoding
// for multi segment variables.
//
// The path variables **must not** refer to any repeated or mapped field,
// because client libraries are not capable of handling such variable expansion.
//
// The path variables **must not** capture the leading "/" character. The reason
// is that the most common use case "{var}" does not capture the leading "/"
// character. For consistency, all path variables must share the same behavior.
//
// Repeated message fields must not be mapped to URL query parameters, because
// no client library can support such complicated mapping.
//
// If an API needs to use a JSON array for request or response body, it can map
// the request or response body to a repeated field. However, some gRPC
// Transcoding implementations may not support this feature.
message HttpRule {
// Selects a method to which this rule applies.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax
// details.
string selector = 1;
// Determines the URL pattern is matched by this rules. This pattern can be
// used with any of the {get|put|post|delete|patch} methods. A custom method
// can be defined using the 'custom' field.
oneof pattern {
// Maps to HTTP GET. Used for listing and getting information about
// resources.
string get = 2;
// Maps to HTTP PUT. Used for replacing a resource.
string put = 3;
// Maps to HTTP POST. Used for creating a resource or performing an action.
string post = 4;
// Maps to HTTP DELETE. Used for deleting a resource.
string delete = 5;
// Maps to HTTP PATCH. Used for updating a resource.
string patch = 6;
// The custom pattern is used for specifying an HTTP method that is not
// included in the `pattern` field, such as HEAD, or "*" to leave the
// HTTP method unspecified for this rule. The wild-card rule is useful
// for services that provide content to Web (HTML) clients.
CustomHttpPattern custom = 8;
}
// The name of the request field whose value is mapped to the HTTP request
// body, or `*` for mapping all request fields not captured by the path
// pattern to the HTTP body, or omitted for not having any HTTP request body.
//
// NOTE: the referred field must be present at the top-level of the request
// message type.
string body = 7;
// Optional. The name of the response field whose value is mapped to the HTTP
// response body. When omitted, the entire response message will be used
// as the HTTP response body.
//
// NOTE: The referred field must be present at the top-level of the response
// message type.
string response_body = 12;
// Additional HTTP bindings for the selector. Nested bindings must
// not contain an `additional_bindings` field themselves (that is,
// the nesting may only be one level deep).
repeated HttpRule additional_bindings = 11;
}
// A custom pattern is used for defining custom HTTP verb.
message CustomHttpPattern {
// The name of this custom HTTP verb.
string kind = 1;
// The path matched by this custom verb.
string path = 2;
}

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@ -0,0 +1,80 @@
// Copyright 2025 Google LLC
//
// 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 google.api;
import "google/protobuf/any.proto";
option go_package = "google.golang.org/genproto/googleapis/api/httpbody;httpbody";
option java_multiple_files = true;
option java_outer_classname = "HttpBodyProto";
option java_package = "com.google.api";
option objc_class_prefix = "GAPI";
// Message that represents an arbitrary HTTP body. It should only be used for
// payload formats that can't be represented as JSON, such as raw binary or
// an HTML page.
//
//
// This message can be used both in streaming and non-streaming API methods in
// the request as well as the response.
//
// It can be used as a top-level request field, which is convenient if one
// wants to extract parameters from either the URL or HTTP template into the
// request fields and also want access to the raw HTTP body.
//
// Example:
//
// message GetResourceRequest {
// // A unique request id.
// string request_id = 1;
//
// // The raw HTTP body is bound to this field.
// google.api.HttpBody http_body = 2;
//
// }
//
// service ResourceService {
// rpc GetResource(GetResourceRequest)
// returns (google.api.HttpBody);
// rpc UpdateResource(google.api.HttpBody)
// returns (google.protobuf.Empty);
//
// }
//
// Example with streaming methods:
//
// service CaldavService {
// rpc GetCalendar(stream google.api.HttpBody)
// returns (stream google.api.HttpBody);
// rpc UpdateCalendar(stream google.api.HttpBody)
// returns (stream google.api.HttpBody);
//
// }
//
// Use of this type only changes how the request and response bodies are
// handled, all other features will continue to work unchanged.
message HttpBody {
// The HTTP Content-Type header value specifying the content type of the body.
string content_type = 1;
// The HTTP request/response body as raw binary.
bytes data = 2;
// Application specific response metadata. Must be set in the first response
// for streaming APIs.
repeated google.protobuf.Any extensions = 3;
}