ceph-csi/vendor/k8s.io/kubernetes/hack/lib/protoc.sh

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#!/usr/bin/env bash
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# Copyright 2017 The Kubernetes Authors.
#
# 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.
set -o errexit
set -o nounset
set -o pipefail
# The root of the build/dist directory
KUBE_ROOT="$(cd "$(dirname "${BASH_SOURCE}")/../.." && pwd -P)"
source "${KUBE_ROOT}/hack/lib/init.sh"
# Generates $1/api.pb.go from the protobuf file $1/api.proto
# and formats it correctly
# $1: Full path to the directory where the api.proto file is
function kube::protoc::generate_proto() {
kube::golang::setup_env
local bins=(
vendor/k8s.io/code-generator/cmd/go-to-protobuf/protoc-gen-gogo
)
make -C "${KUBE_ROOT}" WHAT="${bins[*]}"
kube::protoc::check_protoc
local package=${1}
kube::protoc::protoc ${package}
kube::protoc::format ${package}
}
# Checks that the current protoc version is at least version 3.0.0-beta1
# exit 1 if it's not the case
function kube::protoc::check_protoc() {
if [[ -z "$(which protoc)" || "$(protoc --version)" != "libprotoc 3."* ]]; then
echo "Generating protobuf requires protoc 3.0.0-beta1 or newer. Please download and"
echo "install the platform appropriate Protobuf package for your OS: "
echo
echo " https://github.com/google/protobuf/releases"
echo
echo "WARNING: Protobuf changes are not being validated"
exit 1
fi
}
# Generates $1/api.pb.go from the protobuf file $1/api.proto
# $1: Full path to the directory where the api.proto file is
function kube::protoc::protoc() {
local package=${1}
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gogopath=$(dirname "$(kube::util::find-binary "protoc-gen-gogo")")
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PATH="${gogopath}:${PATH}" protoc \
--proto_path="${package}" \
--proto_path="${KUBE_ROOT}/vendor" \
--gogo_out=plugins=grpc:${package} ${package}/api.proto
}
# Formats $1/api.pb.go, adds the boilerplate comments and run gofmt on it
# $1: Full path to the directory where the api.proto file is
function kube::protoc::format() {
local package=${1}
# Update boilerplate for the generated file.
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echo "$(cat hack/boilerplate/boilerplate.generatego.txt ${package}/api.pb.go)" > ${package}/api.pb.go
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# Run gofmt to clean up the generated code.
kube::golang::verify_go_version
gofmt -l -s -w ${package}/api.pb.go
}
# Compares the contents of $1 and $2
# Echo's $3 in case of error and exits 1
function kube::protoc::diff() {
local ret=0
diff -I "gzipped FileDescriptorProto" -I "0x" -Naupr ${1} ${2} || ret=$?
if [[ $ret -ne 0 ]]; then
echo ${3}
exit 1
fi
}