Building Protocol Buffers with go build

[doherty...@gmail.com]

I am trying to build packages using an existing set of protos that my company has and have run into some issues. I have simplified the issue I am getting to the following workspace. Could someone please give me insight into what I am doing wrong or the appropriate documentation or venue to get help. Thank you and sorry if this is a simple question. 

patrick$ echo $GOPATH

/Users/patrick/Code/workspace

patrick$ pwd

/Users/patrick/Code/workspace

patrick$ cat src/foo/foo.proto

package foo;

message Foo

{

  optional string foo = 1;

}

patrick$ cat src/bar/bar.proto

package bar;

import "foo/foo.proto";

message Bar

{

  optional foo.Foo foo = 1;

  optional string bar = 2;

}

patrick$ protoc --go_out=src --proto_path=src/ src/foo/foo.proto

patrick$ protoc --go_out=src --proto_path=src/ src/bar/bar.proto

patrick$ go install foo

patrick$ go build bar

src/bar/bar.pb.go:18:8: cannot find package "foo/foo.pb" in any of:

        /usr/local/Cellar/go/1.3/libexec/src/pkg/foo/foo.pb (from $GOROOT)

        /Users/patrick/Code/workspace/src/foo/foo.pb (from $GOPATH)

[Andrew Gwozdziewycz]

On Tuesday, February 24, 2015 at 8:15:25 PM UTC-5, doherty...@gmail.com wrote:

patrick$ protoc --go_out=src --proto_path=src/ src/foo/foo.proto

patrick$ protoc --go_out=src --proto_path=src/ src/bar/bar.proto

patrick$ go install foo

patrick$ go build bar

src/bar/bar.pb.go:18:8: cannot find package "foo/foo.pb" in any of:

        /usr/local/Cellar/go/1.3/libexec/src/pkg/foo/foo.pb (from $GOROOT)

        /Users/patrick/Code/workspace/src/foo/foo.pb (from $GOPATH)

Call me silly (I've never used protoc with go), but is this just a file name problem? You're using .proto, and it seems to be looking for .pb ?

 

[doherty...@gmail.com]

protoc generates src/foo/foo.pb.go and src/bar/bar.pb.go so I do not believe that is the issue.

[Jason E. Aten]

it looks you generated a package "foo", but then you're trying to import a different package, "foo/foo.pb"

[doherty...@gmail.com]

Yes. When I change the import path for foo in bar.pb.go to import foo I can get the bar package to compile. Do you know how to get protoc to generate the correct import path?