How to Fix the 'protoc-gen-go: program not found or is not executable' Error in Go gRPC?

Resolving "protoc-gen-go: program not found or is not executable" Error in Go gRPC

While attempting to generate Go code for a gRPC application, you may encounter the error "protoc-gen-go: program not found or is not executable." This issue can arise due to using an outdated approach in Go 1.17 and later versions.

Solution for Go 1.17

In Go 1.17, installing executables using go get has been deprecated in favor of go install. To resolve this error for Go 1.17 and later versions, follow these steps:

1. Update your .bashrc or .zshrc file:

   export GOPATH=$HOME/go
   export PATH=$PATH:$GOPATH/bin

2. Install the protoc-gen-go and protoc-gen-go-grpc plugins:

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

   This will download and install the latest versions of the necessary plugins.

3. Generate the Go code:

   protoc --go-grpc_out=. *.proto

   This will generate the Go code needed for your gRPC application.

Additional Notes:

• Ensure you have the protoc compiler installed and available in your PATH.
• Restart your terminal or command line after making changes to your .bashrc or .zshrc file.
• Consult the official Go documentation for the most up-to-date information on installing and using these plugins.

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