Extra rules

This is a collection of helper rules. These are not core to building a go binary, but are supplied to make life a little easier.


Additional resources


This rule has moved. See gazelle rule in the Gazelle repository.


This rule allows you to generate mock interfaces with mockgen (from golang/mock) which can be useful for certain testing scenarios. See gomock_rule in the gomock repository.



go_embed_data generates a .go file that contains data from a file or a list of files. It should be consumed in the srcs list of one of the [core go rules].

Before using go_embed_data, you must add the following snippet to your WORKSPACE:

load("@io_bazel_rules_go//extras:embed_data_deps.bzl", "go_embed_data_dependencies")


go_embed_data accepts the attributes listed below.

Example usage (generated)

load("@io_bazel_rules_go//extras:embed_data_deps.bzl", "go_embed_data")

    # A unique name for this target.
    name = "",


A unique name for this target.


If True and srcs is used, map keys are file base names instead of relative paths.


Go package name for the generated .go file.


A single file to embed. This cannot be used at the same time as srcs. The generated file will have a variable of type []byte or string with the contents of this file.


A list of files to embed. This cannot be used at the same time as src. The generated file will have a variable of type map[string][]byte or map[string]string with the contents of each file. The map keys are relative paths of the files from the repository root. Keys for files in external repositories will be prefixed with "external/repo/" where "repo" is the name of the external repository.


If True, the embedded data will be stored as string instead of []byte.


If True, sources are treated as archives and their contents will be stored. Supported formats are .zip and .tar


Name of the variable that will contain the embedded data.