exttract protoc plugin to dedicated repo
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
4233a4b673
commit
75222e07cb
33
cmd/protoc-gen-micro/.gitignore
vendored
33
cmd/protoc-gen-micro/.gitignore
vendored
@ -1,33 +0,0 @@
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
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*.o
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*.a
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*.so
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# Folders
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_obj
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_test
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_build
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# Architecture specific extensions/prefixes
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*.[568vq]
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[568vq].out
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*.cgo1.go
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*.cgo2.c
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_cgo_defun.c
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_cgo_gotypes.go
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_cgo_export.*
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_testmain.go
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*.exe
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*.test
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*.prof
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# ignore go build and test outputs
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coverage.txt
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coverage.out
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# ignore locally built binaries
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protoc-gen-micro
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dist
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@ -1,138 +0,0 @@
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# protoc-gen-micro
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This is protobuf code generation for micro. We use protoc-gen-micro to reduce boilerplate code.
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## Install
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```
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go get github.com/micro/micro/v3/cmd/protoc-gen-micro@master
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```
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Also required:
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- [protoc](https://github.com/google/protobuf)
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- [protoc-gen-go](https://github.com/golang/protobuf)
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## Usage
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Define your service as `greeter.proto`
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```
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syntax = "proto3";
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service Greeter {
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rpc Hello(Request) returns (Response) {}
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}
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message Request {
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string name = 1;
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}
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message Response {
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string msg = 1;
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}
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```
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Generate the code
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```
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protoc --proto_path=$GOPATH/src:. --micro_out=. --go_out=. greeter.proto
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```
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Your output result should be:
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```
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./
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greeter.proto # original protobuf file
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greeter.pb.go # auto-generated by protoc-gen-go
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greeter.micro.go # auto-generated by protoc-gen-micro
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```
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The micro generated code includes clients and handlers which reduce boiler plate code
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### Server
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Register the handler with your micro server
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```go
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type Greeter struct{}
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func (g *Greeter) Hello(ctx context.Context, req *proto.Request, rsp *proto.Response) error {
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rsp.Msg = "Hello " + req.Name
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return nil
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}
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proto.RegisterGreeterHandler(service.Server(), &Greeter{})
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```
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### Client
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Create a service client with your micro client
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```go
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client := proto.NewGreeterService("greeter", service.Client())
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```
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### Errors
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If you see an error about `protoc-gen-micro` not being found or executable, it's likely your environment may not be configured correctly. If you've already installed `protoc`, `protoc-gen-go`, and `protoc-gen-micro` ensure you've included `$GOPATH/bin` in your `PATH`.
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Alternative specify the Go plugin paths as arguments to the `protoc` command
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```
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protoc --plugin=protoc-gen-go=$GOPATH/bin/protoc-gen-go --plugin=protoc-gen-micro=$GOPATH/bin/protoc-gen-micro --proto_path=$GOPATH/src:. --micro_out=. --go_out=. greeter.proto
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```
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### Endpoint
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Add a micro API endpoint which routes directly to an RPC method
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Usage:
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1. Clone `github.com/googleapis/googleapis` to use this feature as it requires http annotations.
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2. The protoc command must include `-I$GOPATH/src/github.com/googleapis/googleapis` for the annotations import.
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```diff
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syntax = "proto3";
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import "google/api/annotations.proto";
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service Greeter {
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rpc Hello(Request) returns (Response) {
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option (google.api.http) = { post: "/hello"; body: "*"; };
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}
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}
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message Request {
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string name = 1;
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}
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message Response {
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string msg = 1;
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}
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```
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The proto generates a `RegisterGreeterHandler` function with a [api.Endpoint](https://godoc.org/github.com/micro/go-micro/api#Endpoint).
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```diff
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func RegisterGreeterHandler(s server.Server, hdlr GreeterHandler, opts ...server.HandlerOption) error {
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type greeter interface {
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Hello(ctx context.Context, in *Request, out *Response) error
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}
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type Greeter struct {
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greeter
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}
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h := &greeterHandler{hdlr}
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opts = append(opts, api.WithEndpoint(&api.Endpoint{
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Name: "Greeter.Hello",
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Path: []string{"/hello"},
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Method: []string{"POST"},
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Handler: "rpc",
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}))
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return s.Handle(s.NewHandler(&Greeter{h}, opts...))
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}
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```
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## LICENSE
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protoc-gen-micro is a liberal reuse of protoc-gen-go hence we maintain the original license
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@ -1,40 +0,0 @@
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# Go support for Protocol Buffers - Google's data interchange format
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#
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# Copyright 2010 The Go Authors. All rights reserved.
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# https://github.com/golang/protobuf
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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||||
# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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include $(GOROOT)/src/Make.inc
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TARG=github.com/golang/protobuf/compiler/generator
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GOFILES=\
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generator.go\
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DEPS=../descriptor ../plugin ../../proto
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include $(GOROOT)/src/Make.pkg
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File diff suppressed because it is too large
Load Diff
@ -1,135 +0,0 @@
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// Go support for Protocol Buffers - Google's data interchange format
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//
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// Copyright 2013 The Go Authors. All rights reserved.
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// https://github.com/golang/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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||||
// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
|
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package generator
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import (
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"testing"
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"github.com/golang/protobuf/protoc-gen-go/descriptor"
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)
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func TestCamelCase(t *testing.T) {
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tests := []struct {
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in, want string
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}{
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{"one", "One"},
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{"one_two", "OneTwo"},
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{"_my_field_name_2", "XMyFieldName_2"},
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{"Something_Capped", "Something_Capped"},
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{"my_Name", "My_Name"},
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{"OneTwo", "OneTwo"},
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{"_", "X"},
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{"_a_", "XA_"},
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}
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for _, tc := range tests {
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if got := CamelCase(tc.in); got != tc.want {
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t.Errorf("CamelCase(%q) = %q, want %q", tc.in, got, tc.want)
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}
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}
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}
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func TestGoPackageOption(t *testing.T) {
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tests := []struct {
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in string
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impPath GoImportPath
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pkg GoPackageName
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ok bool
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}{
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{"", "", "", false},
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{"foo", "", "foo", true},
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{"github.com/golang/bar", "github.com/golang/bar", "bar", true},
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{"github.com/golang/bar;baz", "github.com/golang/bar", "baz", true},
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{"github.com/golang/string", "github.com/golang/string", "string", true},
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}
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for _, tc := range tests {
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d := &FileDescriptor{
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FileDescriptorProto: &descriptor.FileDescriptorProto{
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Options: &descriptor.FileOptions{
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GoPackage: &tc.in,
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},
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},
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}
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impPath, pkg, ok := d.goPackageOption()
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if impPath != tc.impPath || pkg != tc.pkg || ok != tc.ok {
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t.Errorf("go_package = %q => (%q, %q, %t), want (%q, %q, %t)", tc.in,
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impPath, pkg, ok, tc.impPath, tc.pkg, tc.ok)
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}
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}
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}
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func TestPackageNames(t *testing.T) {
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g := New()
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g.packageNames = make(map[GoImportPath]GoPackageName)
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g.usedPackageNames = make(map[GoPackageName]bool)
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for _, test := range []struct {
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importPath GoImportPath
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want GoPackageName
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}{
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{"github.com/golang/foo", "foo"},
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{"github.com/golang/second/package/named/foo", "foo1"},
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{"github.com/golang/third/package/named/foo", "foo2"},
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{"github.com/golang/conflicts/with/predeclared/ident/string", "string1"},
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} {
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if got := g.GoPackageName(test.importPath); got != test.want {
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t.Errorf("GoPackageName(%v) = %v, want %v", test.importPath, got, test.want)
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}
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}
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}
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func TestUnescape(t *testing.T) {
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tests := []struct {
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in string
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out string
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}{
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// successful cases, including all kinds of escapes
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{"", ""},
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{"foo bar baz frob nitz", "foo bar baz frob nitz"},
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{`\000\001\002\003\004\005\006\007`, string([]byte{0, 1, 2, 3, 4, 5, 6, 7})},
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{`\a\b\f\n\r\t\v\\\?\'\"`, string([]byte{'\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '?', '\'', '"'})},
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{`\x10\x20\x30\x40\x50\x60\x70\x80`, string([]byte{16, 32, 48, 64, 80, 96, 112, 128})},
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// variable length octal escapes
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{`\0\018\222\377\3\04\005\6\07`, string([]byte{0, 1, '8', 0222, 255, 3, 4, 5, 6, 7})},
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// malformed escape sequences left as is
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{"foo \\g bar", "foo \\g bar"},
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{"foo \\xg0 bar", "foo \\xg0 bar"},
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{"\\", "\\"},
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{"\\x", "\\x"},
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{"\\xf", "\\xf"},
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{"\\777", "\\777"}, // overflows byte
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}
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for _, tc := range tests {
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s := unescape(tc.in)
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if s != tc.out {
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t.Errorf("doUnescape(%q) = %q; should have been %q", tc.in, s, tc.out)
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}
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}
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}
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@ -1,99 +0,0 @@
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// Go support for Protocol Buffers - Google's data interchange format
|
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//
|
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// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
// protoc-gen-micro is a plugin for the Google protocol buffer compiler to generate
|
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// Go code. Run it by building this program and putting it in your path with
|
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// the name
|
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// protoc-gen-micro
|
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// That word 'micro' at the end becomes part of the option string set for the
|
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// protocol compiler, so once the protocol compiler (protoc) is installed
|
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// you can run
|
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// protoc --micro_out=output_directory --go_out=output_directory input_directory/file.proto
|
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// to generate go-micro code for the protocol defined by file.proto.
|
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// With that input, the output will be written to
|
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// output_directory/file.micro.go
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||||
//
|
||||
// The generated code is documented in the package comment for
|
||||
// the library.
|
||||
//
|
||||
// See the README and documentation for protocol buffers to learn more:
|
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// https://developers.google.com/protocol-buffers/
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package main
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|
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import (
|
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"io/ioutil"
|
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"os"
|
||||
|
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"github.com/golang/protobuf/proto"
|
||||
"github.com/unistack-org/micro/v3/cmd/protoc-gen-micro/generator"
|
||||
_ "github.com/unistack-org/micro/v3/cmd/protoc-gen-micro/plugin/micro"
|
||||
)
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func main() {
|
||||
// Begin by allocating a generator. The request and response structures are stored there
|
||||
// so we can do error handling easily - the response structure contains the field to
|
||||
// report failure.
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g := generator.New()
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||||
|
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data, err := ioutil.ReadAll(os.Stdin)
|
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if err != nil {
|
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g.Error(err, "reading input")
|
||||
}
|
||||
|
||||
if err := proto.Unmarshal(data, g.Request); err != nil {
|
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g.Error(err, "parsing input proto")
|
||||
}
|
||||
|
||||
if len(g.Request.FileToGenerate) == 0 {
|
||||
g.Fail("no files to generate")
|
||||
}
|
||||
|
||||
g.CommandLineParameters(g.Request.GetParameter())
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||||
|
||||
// Create a wrapped version of the Descriptors and EnumDescriptors that
|
||||
// point to the file that defines them.
|
||||
g.WrapTypes()
|
||||
|
||||
g.SetPackageNames()
|
||||
g.BuildTypeNameMap()
|
||||
|
||||
g.GenerateAllFiles()
|
||||
|
||||
// Send back the results.
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data, err = proto.Marshal(g.Response)
|
||||
if err != nil {
|
||||
g.Error(err, "failed to marshal output proto")
|
||||
}
|
||||
_, err = os.Stdout.Write(data)
|
||||
if err != nil {
|
||||
g.Error(err, "failed to write output proto")
|
||||
}
|
||||
}
|
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@ -1,583 +0,0 @@
|
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package micro
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"path"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/golang/protobuf/proto"
|
||||
pb "github.com/golang/protobuf/protoc-gen-go/descriptor"
|
||||
"github.com/unistack-org/micro/v3/cmd/protoc-gen-micro/generator"
|
||||
options "google.golang.org/genproto/googleapis/api/annotations"
|
||||
)
|
||||
|
||||
// Paths for packages used by code generated in this file,
|
||||
// relative to the import_prefix of the generator.Generator.
|
||||
const (
|
||||
apiPkgPath = "github.com/unistack-org/micro/v3/api"
|
||||
contextPkgPath = "context"
|
||||
clientPkgPath = "github.com/unistack-org/micro/v3/client"
|
||||
serverPkgPath = "github.com/unistack-org/micro/v3/server"
|
||||
)
|
||||
|
||||
func init() {
|
||||
generator.RegisterPlugin(new(micro))
|
||||
}
|
||||
|
||||
// micro is an implementation of the Go protocol buffer compiler's
|
||||
// plugin architecture. It generates bindings for go-micro support.
|
||||
type micro struct {
|
||||
gen *generator.Generator
|
||||
}
|
||||
|
||||
// Name returns the name of this plugin, "micro".
|
||||
func (g *micro) Name() string {
|
||||
return "micro"
|
||||
}
|
||||
|
||||
// The names for packages imported in the generated code.
|
||||
// They may vary from the final path component of the import path
|
||||
// if the name is used by other packages.
|
||||
var (
|
||||
apiPkg string
|
||||
contextPkg string
|
||||
clientPkg string
|
||||
serverPkg string
|
||||
pkgImports map[generator.GoPackageName]bool
|
||||
)
|
||||
|
||||
// Init initializes the plugin.
|
||||
func (g *micro) Init(gen *generator.Generator) {
|
||||
g.gen = gen
|
||||
apiPkg = generator.RegisterUniquePackageName("api", nil)
|
||||
contextPkg = generator.RegisterUniquePackageName("context", nil)
|
||||
clientPkg = generator.RegisterUniquePackageName("client", nil)
|
||||
serverPkg = generator.RegisterUniquePackageName("server", nil)
|
||||
}
|
||||
|
||||
// Given a type name defined in a .proto, return its object.
|
||||
// Also record that we're using it, to guarantee the associated import.
|
||||
func (g *micro) objectNamed(name string) generator.Object {
|
||||
g.gen.RecordTypeUse(name)
|
||||
return g.gen.ObjectNamed(name)
|
||||
}
|
||||
|
||||
// Given a type name defined in a .proto, return its name as we will print it.
|
||||
func (g *micro) typeName(str string) string {
|
||||
return g.gen.TypeName(g.objectNamed(str))
|
||||
}
|
||||
|
||||
// P forwards to g.gen.P.
|
||||
func (g *micro) P(args ...interface{}) { g.gen.P(args...) }
|
||||
|
||||
// Generate generates code for the services in the given file.
|
||||
func (g *micro) Generate(file *generator.FileDescriptor) {
|
||||
if len(file.FileDescriptorProto.Service) == 0 {
|
||||
return
|
||||
}
|
||||
g.P("// Reference imports to suppress errors if they are not otherwise used.")
|
||||
g.P("var _ ", apiPkg, ".Endpoint")
|
||||
g.P("var _ ", contextPkg, ".Context")
|
||||
g.P("var _ ", clientPkg, ".Option")
|
||||
g.P("var _ ", serverPkg, ".Option")
|
||||
g.P()
|
||||
|
||||
for i, service := range file.FileDescriptorProto.Service {
|
||||
g.generateService(file, service, i)
|
||||
}
|
||||
}
|
||||
|
||||
// GenerateImports generates the import declaration for this file.
|
||||
func (g *micro) GenerateImports(file *generator.FileDescriptor, imports map[generator.GoImportPath]generator.GoPackageName) {
|
||||
if len(file.FileDescriptorProto.Service) == 0 {
|
||||
return
|
||||
}
|
||||
g.P("import (")
|
||||
g.P(apiPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, apiPkgPath)))
|
||||
g.P(contextPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, contextPkgPath)))
|
||||
g.P(clientPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, clientPkgPath)))
|
||||
g.P(serverPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, serverPkgPath)))
|
||||
g.P(")")
|
||||
g.P()
|
||||
|
||||
// We need to keep track of imported packages to make sure we don't produce
|
||||
// a name collision when generating types.
|
||||
pkgImports = make(map[generator.GoPackageName]bool)
|
||||
for _, name := range imports {
|
||||
pkgImports[name] = true
|
||||
}
|
||||
}
|
||||
|
||||
// reservedClientName records whether a client name is reserved on the client side.
|
||||
var reservedClientName = map[string]bool{
|
||||
// TODO: do we need any in go-micro?
|
||||
}
|
||||
|
||||
func unexport(s string) string {
|
||||
if len(s) == 0 {
|
||||
return ""
|
||||
}
|
||||
name := strings.ToLower(s[:1]) + s[1:]
|
||||
if pkgImports[generator.GoPackageName(name)] {
|
||||
return name + "_"
|
||||
}
|
||||
return name
|
||||
}
|
||||
|
||||
// generateService generates all the code for the named service.
|
||||
func (g *micro) generateService(file *generator.FileDescriptor, service *pb.ServiceDescriptorProto, index int) {
|
||||
path := fmt.Sprintf("6,%d", index) // 6 means service.
|
||||
|
||||
origServName := service.GetName()
|
||||
serviceName := strings.ToLower(service.GetName())
|
||||
if pkg := file.GetPackage(); pkg != "" {
|
||||
serviceName = pkg
|
||||
}
|
||||
servName := generator.CamelCase(origServName)
|
||||
servAlias := servName + "Service"
|
||||
|
||||
// strip suffix
|
||||
if strings.HasSuffix(servAlias, "ServiceService") {
|
||||
servAlias = strings.TrimSuffix(servAlias, "Service")
|
||||
}
|
||||
|
||||
g.P()
|
||||
g.P("// Api Endpoints for ", servName, " service")
|
||||
g.P()
|
||||
|
||||
g.P("func New", servName, "Endpoints () []*", apiPkg, ".Endpoint {")
|
||||
g.P("return []*", apiPkg, ".Endpoint{")
|
||||
for _, method := range service.Method {
|
||||
if method.Options != nil && proto.HasExtension(method.Options, options.E_Http) {
|
||||
g.P("&", apiPkg, ".Endpoint{")
|
||||
g.generateEndpoint(servName, method)
|
||||
g.P("},")
|
||||
}
|
||||
}
|
||||
g.P("}")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P()
|
||||
g.P("// Client API for ", servName, " service")
|
||||
g.P()
|
||||
|
||||
// Client interface.
|
||||
g.P("type ", servAlias, " interface {")
|
||||
for i, method := range service.Method {
|
||||
g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
|
||||
g.P(g.generateClientSignature(servName, method))
|
||||
}
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
// Client structure.
|
||||
g.P("type ", unexport(servAlias), " struct {")
|
||||
g.P("c ", clientPkg, ".Client")
|
||||
g.P("name string")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
// NewClient factory.
|
||||
g.P("func New", servAlias, " (name string, c ", clientPkg, ".Client) ", servAlias, " {")
|
||||
/*
|
||||
g.P("if c == nil {")
|
||||
g.P("c = ", clientPkg, ".NewClient()")
|
||||
g.P("}")
|
||||
g.P("if len(name) == 0 {")
|
||||
g.P(`name = "`, serviceName, `"`)
|
||||
g.P("}")
|
||||
*/
|
||||
g.P("return &", unexport(servAlias), "{")
|
||||
g.P("c: c,")
|
||||
g.P("name: name,")
|
||||
g.P("}")
|
||||
g.P("}")
|
||||
g.P()
|
||||
var methodIndex, streamIndex int
|
||||
serviceDescVar := "_" + servName + "_serviceDesc"
|
||||
// Client method implementations.
|
||||
for _, method := range service.Method {
|
||||
var descExpr string
|
||||
if !method.GetServerStreaming() {
|
||||
// Unary RPC method
|
||||
descExpr = fmt.Sprintf("&%s.Methods[%d]", serviceDescVar, methodIndex)
|
||||
methodIndex++
|
||||
} else {
|
||||
// Streaming RPC method
|
||||
descExpr = fmt.Sprintf("&%s.Streams[%d]", serviceDescVar, streamIndex)
|
||||
streamIndex++
|
||||
}
|
||||
g.generateClientMethod(serviceName, servName, serviceDescVar, method, descExpr)
|
||||
}
|
||||
|
||||
g.P("// Server API for ", servName, " service")
|
||||
g.P()
|
||||
|
||||
// Server interface.
|
||||
serverType := servName + "Handler"
|
||||
g.P("type ", serverType, " interface {")
|
||||
for i, method := range service.Method {
|
||||
g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
|
||||
g.P(g.generateServerSignature(servName, method))
|
||||
}
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
// Server registration.
|
||||
g.P("func Register", servName, "Handler(s ", serverPkg, ".Server, hdlr ", serverType, ", opts ...", serverPkg, ".HandlerOption) error {")
|
||||
g.P("type ", unexport(servName), " interface {")
|
||||
|
||||
// generate interface methods
|
||||
for _, method := range service.Method {
|
||||
methName := generator.CamelCase(method.GetName())
|
||||
inType := g.typeName(method.GetInputType())
|
||||
outType := g.typeName(method.GetOutputType())
|
||||
|
||||
if !method.GetServerStreaming() && !method.GetClientStreaming() {
|
||||
g.P(methName, "(ctx ", contextPkg, ".Context, req *", inType, ", rsp *", outType, ") error")
|
||||
continue
|
||||
}
|
||||
g.P(methName, "(ctx ", contextPkg, ".Context, stream server.Stream) error")
|
||||
}
|
||||
g.P("}")
|
||||
g.P("type ", servName, " struct {")
|
||||
g.P(unexport(servName))
|
||||
g.P("}")
|
||||
g.P("h := &", unexport(servName), "Handler{hdlr}")
|
||||
for _, method := range service.Method {
|
||||
if method.Options != nil && proto.HasExtension(method.Options, options.E_Http) {
|
||||
g.P("opts = append(opts, ", apiPkg, ".WithEndpoint(&", apiPkg, ".Endpoint{")
|
||||
g.generateEndpoint(servName, method)
|
||||
g.P("}))")
|
||||
}
|
||||
}
|
||||
g.P("return s.Handle(s.NewHandler(&", servName, "{h}, opts...))")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("type ", unexport(servName), "Handler struct {")
|
||||
g.P(serverType)
|
||||
g.P("}")
|
||||
|
||||
// Server handler implementations.
|
||||
var handlerNames []string
|
||||
for _, method := range service.Method {
|
||||
hname := g.generateServerMethod(servName, method)
|
||||
handlerNames = append(handlerNames, hname)
|
||||
}
|
||||
}
|
||||
|
||||
// generateEndpoint creates the api endpoint
|
||||
func (g *micro) generateEndpoint(servName string, method *pb.MethodDescriptorProto) {
|
||||
if method.Options == nil || !proto.HasExtension(method.Options, options.E_Http) {
|
||||
return
|
||||
}
|
||||
// http rules
|
||||
r, err := proto.GetExtension(method.Options, options.E_Http)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
rule := r.(*options.HttpRule)
|
||||
var meth string
|
||||
var path string
|
||||
switch {
|
||||
case len(rule.GetDelete()) > 0:
|
||||
meth = "DELETE"
|
||||
path = rule.GetDelete()
|
||||
case len(rule.GetGet()) > 0:
|
||||
meth = "GET"
|
||||
path = rule.GetGet()
|
||||
case len(rule.GetPatch()) > 0:
|
||||
meth = "PATCH"
|
||||
path = rule.GetPatch()
|
||||
case len(rule.GetPost()) > 0:
|
||||
meth = "POST"
|
||||
path = rule.GetPost()
|
||||
case len(rule.GetPut()) > 0:
|
||||
meth = "PUT"
|
||||
path = rule.GetPut()
|
||||
}
|
||||
if len(meth) == 0 || len(path) == 0 {
|
||||
return
|
||||
}
|
||||
// TODO: process additional bindings
|
||||
g.P("Name:", fmt.Sprintf(`"%s.%s",`, servName, method.GetName()))
|
||||
g.P("Path:", fmt.Sprintf(`[]string{"%s"},`, path))
|
||||
g.P("Method:", fmt.Sprintf(`[]string{"%s"},`, meth))
|
||||
if len(rule.GetGet()) == 0 {
|
||||
g.P("Body:", fmt.Sprintf(`"%s",`, rule.GetBody()))
|
||||
}
|
||||
if method.GetServerStreaming() || method.GetClientStreaming() {
|
||||
g.P("Stream: true,")
|
||||
}
|
||||
g.P(`Handler: "rpc",`)
|
||||
}
|
||||
|
||||
// generateClientSignature returns the client-side signature for a method.
|
||||
func (g *micro) generateClientSignature(servName string, method *pb.MethodDescriptorProto) string {
|
||||
origMethName := method.GetName()
|
||||
methName := generator.CamelCase(origMethName)
|
||||
if reservedClientName[methName] {
|
||||
methName += "_"
|
||||
}
|
||||
reqArg := ", req *" + g.typeName(method.GetInputType())
|
||||
if method.GetClientStreaming() {
|
||||
reqArg = ""
|
||||
}
|
||||
respName := "*" + g.typeName(method.GetOutputType())
|
||||
if method.GetServerStreaming() || method.GetClientStreaming() {
|
||||
respName = servName + "_" + generator.CamelCase(origMethName) + "Service"
|
||||
}
|
||||
|
||||
return fmt.Sprintf("%s(ctx %s.Context%s, opts ...%s.CallOption) (%s, error)", methName, contextPkg, reqArg, clientPkg, respName)
|
||||
}
|
||||
|
||||
func (g *micro) generateClientMethod(reqServ, servName, serviceDescVar string, method *pb.MethodDescriptorProto, descExpr string) {
|
||||
methName := generator.CamelCase(method.GetName())
|
||||
reqMethod := fmt.Sprintf("%s.%s", servName, methName)
|
||||
inType := g.typeName(method.GetInputType())
|
||||
outType := g.typeName(method.GetOutputType())
|
||||
|
||||
servAlias := servName + "Service"
|
||||
|
||||
// strip suffix
|
||||
if strings.HasSuffix(servAlias, "ServiceService") {
|
||||
servAlias = strings.TrimSuffix(servAlias, "Service")
|
||||
}
|
||||
|
||||
g.P("func (c *", unexport(servAlias), ") ", g.generateClientSignature(servName, method), "{")
|
||||
if !method.GetServerStreaming() && !method.GetClientStreaming() {
|
||||
g.P("rsp := &", outType, "{}")
|
||||
// TODO: Pass descExpr to Invoke.
|
||||
g.P(`err := c.c.Call(ctx, c.c.NewRequest(c.name, "`, reqMethod, `", req), rsp, opts...)`)
|
||||
g.P("if err != nil { return nil, err }")
|
||||
g.P("return rsp, nil")
|
||||
g.P("}")
|
||||
g.P()
|
||||
return
|
||||
}
|
||||
streamType := unexport(servAlias) + methName
|
||||
g.P(`stream, err := c.c.Stream(ctx, c.c.NewRequest(c.name, "`, reqMethod, `", &`, inType, `{}), opts...)`)
|
||||
g.P("if err != nil { return nil, err }")
|
||||
|
||||
if !method.GetClientStreaming() {
|
||||
g.P("if err := stream.Send(req); err != nil { return nil, err }")
|
||||
}
|
||||
|
||||
g.P("return &", streamType, "{stream}, nil")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
genSend := method.GetClientStreaming()
|
||||
genRecv := method.GetServerStreaming()
|
||||
|
||||
// Stream auxiliary types and methods.
|
||||
g.P("type ", servName, "_", methName, "Service interface {")
|
||||
g.P("Context() context.Context")
|
||||
g.P("SendMsg(interface{}) error")
|
||||
g.P("RecvMsg(interface{}) error")
|
||||
|
||||
if genSend && !genRecv {
|
||||
// client streaming, the server will send a response upon close
|
||||
g.P("CloseAndRecv() (*", outType, ", error)")
|
||||
}
|
||||
g.P("Close() error")
|
||||
|
||||
if genSend {
|
||||
g.P("Send(*", inType, ") error")
|
||||
}
|
||||
if genRecv {
|
||||
g.P("Recv() (*", outType, ", error)")
|
||||
}
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("type ", streamType, " struct {")
|
||||
g.P("stream ", clientPkg, ".Stream")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
if genSend && !genRecv {
|
||||
// client streaming, the server will send a response upon close
|
||||
g.P("func (x *", streamType, ") CloseAndRecv() (*", outType, ", error) {")
|
||||
g.P("if err := x.stream.Close(); err != nil {")
|
||||
g.P("return nil, err")
|
||||
g.P("}")
|
||||
g.P("r := new(", outType, ")")
|
||||
g.P("err := x.RecvMsg(r)")
|
||||
g.P("return r, err")
|
||||
g.P("}")
|
||||
g.P()
|
||||
}
|
||||
g.P("func (x *", streamType, ") Close() error {")
|
||||
g.P("return x.stream.Close()")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("func (x *", streamType, ") Context() context.Context {")
|
||||
g.P("return x.stream.Context()")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("func (x *", streamType, ") SendMsg(m interface{}) error {")
|
||||
g.P("return x.stream.Send(m)")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("func (x *", streamType, ") RecvMsg(m interface{}) error {")
|
||||
g.P("return x.stream.Recv(m)")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
if genSend {
|
||||
g.P("func (x *", streamType, ") Send(m *", inType, ") error {")
|
||||
g.P("return x.stream.Send(m)")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
}
|
||||
|
||||
if genRecv {
|
||||
g.P("func (x *", streamType, ") Recv() (*", outType, ", error) {")
|
||||
g.P("m := &", outType, "{}")
|
||||
g.P("err := x.stream.Recv(m)")
|
||||
g.P("if err != nil {")
|
||||
g.P("return nil, err")
|
||||
g.P("}")
|
||||
g.P("return m, nil")
|
||||
g.P("}")
|
||||
g.P()
|
||||
}
|
||||
}
|
||||
|
||||
// generateServerSignature returns the server-side signature for a method.
|
||||
func (g *micro) generateServerSignature(servName string, method *pb.MethodDescriptorProto) string {
|
||||
origMethName := method.GetName()
|
||||
methName := generator.CamelCase(origMethName)
|
||||
if reservedClientName[methName] {
|
||||
methName += "_"
|
||||
}
|
||||
|
||||
var reqArgs []string
|
||||
ret := "error"
|
||||
reqArgs = append(reqArgs, contextPkg+".Context")
|
||||
|
||||
if !method.GetClientStreaming() {
|
||||
reqArgs = append(reqArgs, "*"+g.typeName(method.GetInputType()))
|
||||
}
|
||||
if method.GetServerStreaming() || method.GetClientStreaming() {
|
||||
reqArgs = append(reqArgs, servName+"_"+generator.CamelCase(origMethName)+"Stream")
|
||||
}
|
||||
if !method.GetClientStreaming() && !method.GetServerStreaming() {
|
||||
reqArgs = append(reqArgs, "*"+g.typeName(method.GetOutputType()))
|
||||
}
|
||||
return methName + "(" + strings.Join(reqArgs, ", ") + ") " + ret
|
||||
}
|
||||
|
||||
func (g *micro) generateServerMethod(servName string, method *pb.MethodDescriptorProto) string {
|
||||
methName := generator.CamelCase(method.GetName())
|
||||
hname := fmt.Sprintf("_%s_%s_Handler", servName, methName)
|
||||
serveType := servName + "Handler"
|
||||
inType := g.typeName(method.GetInputType())
|
||||
outType := g.typeName(method.GetOutputType())
|
||||
|
||||
if !method.GetServerStreaming() && !method.GetClientStreaming() {
|
||||
g.P("func (h *", unexport(servName), "Handler) ", methName, "(ctx ", contextPkg, ".Context, req *", inType, ", rsp *", outType, ") error {")
|
||||
g.P("return h.", serveType, ".", methName, "(ctx, req, rsp)")
|
||||
g.P("}")
|
||||
g.P()
|
||||
return hname
|
||||
}
|
||||
streamType := unexport(servName) + methName + "Stream"
|
||||
g.P("func (h *", unexport(servName), "Handler) ", methName, "(ctx ", contextPkg, ".Context, stream server.Stream) error {")
|
||||
if !method.GetClientStreaming() {
|
||||
g.P("m := &", inType, "{}")
|
||||
g.P("if err := stream.Recv(m); err != nil { return err }")
|
||||
g.P("return h.", serveType, ".", methName, "(ctx, m, &", streamType, "{stream})")
|
||||
} else {
|
||||
g.P("return h.", serveType, ".", methName, "(ctx, &", streamType, "{stream})")
|
||||
}
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
genSend := method.GetServerStreaming()
|
||||
genRecv := method.GetClientStreaming()
|
||||
|
||||
// Stream auxiliary types and methods.
|
||||
g.P("type ", servName, "_", methName, "Stream interface {")
|
||||
g.P("Context() context.Context")
|
||||
g.P("SendMsg(interface{}) error")
|
||||
g.P("RecvMsg(interface{}) error")
|
||||
if !genSend {
|
||||
// client streaming, the server will send a response upon close
|
||||
g.P("SendAndClose(*", outType, ") error")
|
||||
}
|
||||
g.P("Close() error")
|
||||
|
||||
if genSend {
|
||||
g.P("Send(*", outType, ") error")
|
||||
}
|
||||
|
||||
if genRecv {
|
||||
g.P("Recv() (*", inType, ", error)")
|
||||
}
|
||||
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("type ", streamType, " struct {")
|
||||
g.P("stream ", serverPkg, ".Stream")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
if !genSend {
|
||||
// client streaming, the server will send a response upon close
|
||||
g.P("func (x *", streamType, ") SendAndClose(in *", outType, ") error {")
|
||||
g.P("if err := x.SendMsg(in); err != nil {")
|
||||
g.P("return err")
|
||||
g.P("}")
|
||||
g.P("return x.stream.Close()")
|
||||
g.P("}")
|
||||
g.P()
|
||||
}
|
||||
// other types of rpc don't send a response when the stream closes
|
||||
g.P("func (x *", streamType, ") Close() error {")
|
||||
g.P("return x.stream.Close()")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("func (x *", streamType, ") Context() context.Context {")
|
||||
g.P("return x.stream.Context()")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("func (x *", streamType, ") SendMsg(m interface{}) error {")
|
||||
g.P("return x.stream.Send(m)")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
g.P("func (x *", streamType, ") RecvMsg(m interface{}) error {")
|
||||
g.P("return x.stream.Recv(m)")
|
||||
g.P("}")
|
||||
g.P()
|
||||
|
||||
if genSend {
|
||||
g.P("func (x *", streamType, ") Send(m *", outType, ") error {")
|
||||
g.P("return x.stream.Send(m)")
|
||||
g.P("}")
|
||||
g.P()
|
||||
}
|
||||
|
||||
if genRecv {
|
||||
g.P("func (x *", streamType, ") Recv() (*", inType, ", error) {")
|
||||
g.P("m := &", inType, "{}")
|
||||
g.P("if err := x.stream.Recv(m); err != nil { return nil, err }")
|
||||
g.P("return m, nil")
|
||||
g.P("}")
|
||||
g.P()
|
||||
}
|
||||
|
||||
return hname
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user