144 lines
4.4 KiB
Bash
Executable file
144 lines
4.4 KiB
Bash
Executable file
#!/usr/bin/env bash
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readonly SCRIPT_NAME="$(basename ${BASH_SOURCE[0]})"
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readonly SCRIPT_DIR="$(dirname "${BASH_SOURCE[0]}")"
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readonly SOURCE_DIR="$(dirname "$(dirname "${SCRIPT_DIR}")")"
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readonly FN_DIR="$(dirname "${SCRIPT_DIR}")/functions"
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source "${SCRIPT_DIR}/functions.sh"
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unset CDPATH
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set -euo pipefail
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usage() {
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cat <<-EOF
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Usage: ${SCRIPT_NAME} [<options ...>]
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Description:
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Regenerates regenerates all Go files from protobuf definitions. In addition
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to running the protoc generator it will also fixup build tags in the
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generated code and regenerate mog outputs and RPC stubs.
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Options:
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-h | --help Print this help text.
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EOF
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}
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function err_usage {
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err "$1"
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err ""
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err "$(usage)"
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}
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function main {
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while test $# -gt 0
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do
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case "$1" in
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-h | --help )
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usage
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return 0
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;;
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esac
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done
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for mod in $(find . -name 'buf.gen.yaml' -exec dirname {} \; | sort)
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do
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(
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# This looks special and it is. First of all this is not just `buf generate`
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# from within the $mod directory because doing that would have caused global
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# file registration conflicts when Consul starts. TLDR there is that Go's
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# protobuf code tracks protobufs by their file paths so those filepaths all
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# must be unique.
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#
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# To work around those constraints we are trying to get the file descriptors
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# passed off to protoc-gen-go to include the top level path. The file paths
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# in the file descriptors will be relative to where `buf` is run. Therefore
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# we must run `buf` from the root of the repo but still tell it to only
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# generate the singular directory. The --template argument allows us to
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# point buf a particular configuration for what code to generate. The
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# --path argument allows us to tell `buf` which files/directories to
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# operate on. Hopefully in the future `buf` will be able to add prefixes
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# to file descriptor paths and we can modify this to work in a more natural way.
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buf generate --template ${mod}/buf.gen.yaml --path ${mod}
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cd $mod
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for proto_file in $(buf ls-files)
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do
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postprocess_protobuf_code $proto_file
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done
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)
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done
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status "Generated all protobuf Go files"
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generate_mog_code
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status "Generated all mog Go files"
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return 0
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}
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function postprocess_protobuf_code {
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local proto_path="${1:-}"
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if [[ -z "${proto_path}" ]]; then
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err "missing protobuf path argument"
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return 1
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fi
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local proto_go_path="${proto_path%%.proto}.pb.go"
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local proto_go_bin_path="${proto_path%%.proto}.pb.binary.go"
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local proto_go_rpcglue_path="${proto_path%%.proto}.rpcglue.pb.go"
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status_stage "Post-Processing generated files for ${proto_path}"
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print_run protoc-go-inject-tag -input="${proto_go_path}" || {
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err "Failed to run protoc-go-inject-tag for ${proto_path}"
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return 1
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}
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local build_tags
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build_tags="$(head -n 2 "${proto_path}" | grep '^//go:build\|// +build' || true)"
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if test -n "${build_tags}"; then
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for file in "${proto_go_bin_path}" "${proto_go_grpc_path}"
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do
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if test -f "${file}"
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then
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echo -e "${build_tags}\n" >> "${file}.new"
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cat "${file}" >> "${file}.new"
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mv "${file}.new" "${file}"
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fi
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done
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fi
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# NOTE: this has to run after we fix up the build tags above
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rm -f "${proto_go_rpcglue_path}"
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print_run go run ${SOURCE_DIR}/internal/tools/proto-gen-rpc-glue/main.go -path "${proto_go_path}" || {
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err "Failed to generate consul rpc glue outputs from ${proto_path}"
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return 1
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}
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return 0
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}
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function generate_mog_code {
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local mog_order
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mog_order="$(go list -tags "${GOTAGS}" -deps ./proto/pb... | grep "consul/proto")"
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for FULL_PKG in ${mog_order}; do
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PKG="${FULL_PKG/#github.com\/hashicorp\/consul\/}"
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status_stage "Generating ${PKG}/*.pb.go into ${PKG}/*.gen.go with mog"
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find "$PKG" -name '*.gen.go' -delete
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if [[ -n "${GOTAGS}" ]]; then
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print_run mog -tags "${GOTAGS}" -source "./${PKG}/*.pb.go"
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else
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print_run mog -source "./${PKG}/*.pb.go"
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fi
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done
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return 0
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}
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main "$@"
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exit $?
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