protoc & protoc-gen-go installation

Forward

protoc is a tool written in C++, which can translate proto files into codes in the specified language. In the go-zero microservices, we use grpc to communicate between services, and the writing of grpc requires the use of protoc and the plug-in protoc-gen-go that translates into go language rpc stub code.

Demonstration environment of this document

• mac OS

way 1: install from goctl

$ goctl env check -i -f -v

[goctl-env]: preparing to check env

[goctl-env]: looking up "protoc"

[goctl-env]: "protoc" is not found in PATH

[goctl-env]: preparing to install "protoc"

"protoc" installed from cache

[goctl-env]: "protoc" is already installed in "/Users/keson/go/bin/protoc"

[goctl-env]: looking up "protoc-gen-go"

[goctl-env]: "protoc-gen-go" is not found in PATH

[goctl-env]: preparing to install "protoc-gen-go"

"protoc-gen-go" installed from cache

[goctl-env]: "protoc-gen-go" is already installed in "/Users/keson/go/bin/protoc-gen-go"

[goctl-env]: looking up "protoc-gen-go-grpc"

[goctl-env]: "protoc-gen-go-grpc" is not found in PATH

[goctl-env]: preparing to install "protoc-gen-go-grpc"

"protoc-gen-go-grpc" installed from cache

[goctl-env]: "protoc-gen-go-grpc" is already installed in "/Users/keson/go/bin/protoc-gen-go-grpc"

[goctl-env]: congratulations! your goctl environment is ready!

way2: install from web page

protoc installation

• Enter the protobuf release page and select the compressed package file suitable for your operating system

• Unzip protoc-3.14.0-osx-x86_64.zip and enter protoc-3.14.0-osx-x86_64

  $ cd protoc-3.14.0-osx-x86_64/bin

• Move the started protoc binary file to any path added to the environment variable, such as $GOPATH/bin. It is not recommended putting it directly with the next path of the system.

  $ mv protoc $GOPATH/bin

  tip

  $GOPATH is the actual folder address of your local machine

• Verify the installation result

  $ protoc --version
  libprotoc 3.14.0

protoc-gen-* installation

tip

Windows may report an error, A required privilege is not held by the client., because goctl needs to be run as administrator under Windows. The reason is that goctl needs to be run "as administrator" under Windows.

• Download and install protoc-gen-go
  $ go install google.golang.org/protobuf/cmd/protoc-gen-go@latest

  $ go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest

caution

protoc-gen-go installation failed, please read Error