Add bindata rule
Test Plan: Created a sample rule and packaged files to a go binary
X-Origin-Diff: phab/D252
GitOrigin-RevId: f80c25518008fded7104fa6945d077a52d928d85
diff --git a/build/bindata/BUILD b/build/bindata/BUILD
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--- /dev/null
+++ b/build/bindata/BUILD
diff --git a/build/bindata/README.md b/build/bindata/README.md
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+##Bindata
+
+This rule uses [go-bindata](https://github.com/kevinburke/go-bindata) to package arbitrary go files.
+Please refer to the documentation there on how to use the packaged data.
+
+Generally this rule is very similar to the `bindata` rule in the default go bazel package.
+However this rule also creates an embeddable go library right away.
+
+###How to use
+
+Add the files you want to package to the `srcs` attribute, set the `package` attribute to the
+go package you want the result to be in and embed the rule into a `go_library`.
+
+####Example: Packaging sql migrations
+
+These rules package all `.sql` files into the target and make it accessible at `importpath` in the package `models`.
+```
+
+go_library(
+ name = "go_default_library",
+ embed = [
+ ":migrations_pack",
+ ],
+ importpath = "git.monogon.dev/source/nexantic.git/golibs/minijob/generated/sql",
+ visibility = ["//visibility:public"],
+)
+
+bindata(
+ name = "migrations_pack",
+ package = "models",
+ srcs = glob(["*.sql"]),
+)
+
+```
diff --git a/build/bindata/bindata.bzl b/build/bindata/bindata.bzl
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+++ b/build/bindata/bindata.bzl
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+# Copyright 2020 The Monogon Project Authors.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load("@bazel_gazelle//:deps.bzl", "go_repository")
+load(
+ "@io_bazel_rules_go//go/private:rules/rule.bzl",
+ "go_rule",
+)
+load(
+ "@io_bazel_rules_go//go:def.bzl",
+ "GoLibrary",
+ "go_context",
+ "go_library",
+)
+
+def _bindata_impl(ctx):
+ out = ctx.actions.declare_file("bindata.go")
+
+ arguments = ctx.actions.args()
+ arguments.add_all([
+ "-pkg",
+ ctx.attr.package,
+ "-prefix",
+ ctx.label.package,
+ "-o",
+ out,
+ ])
+ arguments.add_all(ctx.files.srcs)
+
+ ctx.actions.run(
+ inputs = ctx.files.srcs,
+ outputs = [out],
+ executable = ctx.file.bindata,
+ arguments = [arguments],
+ )
+
+ go = go_context(ctx)
+
+ source_files = [out]
+
+ library = go.new_library(
+ go,
+ srcs = source_files,
+ )
+ source = go.library_to_source(go, None, library, False)
+ providers = [library, source]
+ output_groups = {
+ "go_generated_srcs": source_files,
+ }
+
+ return providers + [OutputGroupInfo(**output_groups)]
+
+bindata = go_rule(
+ _bindata_impl,
+ attrs = {
+ "srcs": attr.label_list(mandatory = True, allow_files = True),
+ "package": attr.string(mandatory = True),
+ "bindata": attr.label(allow_single_file = True, default = Label("@com_github_kevinburke_go_bindata//go-bindata")),
+ },
+)