要让protoc使用插件,需要做下面事情:
Place the plugin binary somewhere in the PATH and give it the name "protoc-gen-NAME" (replacing "NAME" with the name of your plugin).
If you then invoke protoc with the parameter –NAME_out=OUT_DIR (again, replace "NAME" with your plugin's name), protoc will invoke your plugin to generate the output, which will be placed in OUT_DIR.
Place the plugin binary anywhere, with any name, and pass the –plugin parameter to protoc to direct it to your plugin like so:
protoc --plugin=protoc-gen-NAME=path/to/mybinary --NAME_out=OUT_DIR
On Windows, make sure to include the .exe suffix:
protoc --plugin=protoc-gen-NAME=path/to/mybinary.exe --NAME_out=OUT_DIR
参考: https://developers.google.com/protocol-buffers/docs/reference/cpp/google.protobuf.compiler.plugin
产生go的 grpc 代码的插件命令为:
protoc --go_out=plugins=grpc,import_path=mypackage:. *.proto
这里通过 --NAME_out ,就能知道是需要找 protoc-gen-NAME 插件, 即 protoc-gen-go 插件。
而 --go_out=plugins=grpc 则会在 https://github.com/golang/protobuf 这里找到
https://github.com/golang/protobuf/blob/master/protoc-gen-go/grpc/grpc.go 做为插件。
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