71 lines
1.9 KiB
Bash
71 lines
1.9 KiB
Bash
#!/bin/bash
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####
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# envoy-library-references.sh
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#
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# This script ensures that all of the protobuf packages present in the
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# github.com/envoyproxy/go-control-plane library are referenced in the consul
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# codebase somewhere so that the ultimate binary doesn't eliminate those
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# packages. When the packages are linked in they use proto.RegisterFile() to
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# globally register the types in the protobuf machinery so that they are
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# available for decoding.
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#
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# We primarily need this for the Escape Hatch feature where users can provide
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# arbitrary xDS JSON for Consul to decode. If extension points use *any.Any and
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# use an extention package that Consul itself doesn't use then it won't decode
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# unless the package is linked into the binary.
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#
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####
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set -euo pipefail
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unset CDPATH
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cd "$(dirname "$0")" # build-support/scripts
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cd ../.. # <ROOT>
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if [[ ! -f GNUmakefile ]] || [[ ! -f go.mod ]]; then
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echo "not in root consul checkout: ${PWD}" >&2
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exit 1
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fi
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readonly LIBRARY_VERSION="$(grep github.com/envoyproxy/go-control-plane go.mod | awk '{print $2}')"
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readonly OUTFILE=z_xds_packages.go
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echo "Fetching envoyproxy/go-control-plane @ ${LIBRARY_VERSION}..."
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rm -rf _envoy_tmp
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mkdir _envoy_tmp
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trap "rm -rf _envoy_tmp" EXIT
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(
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cd _envoy_tmp
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git clone git@github.com:envoyproxy/go-control-plane
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cd go-control-plane
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git co -b consul-temp "${LIBRARY_VERSION}"
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IFS=$'\n' candidates=($(find . -name *.pb.go -a -type f | sed 's@/[^/]*\.pb\.go$@@' | sort -u))
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echo "Generating a fresh ${OUTFILE} file..."
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cat <<-EOF > "${OUTFILE}"
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// Code generated by envoy-library-references.sh. DO NOT EDIT.
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package xds
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import (
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EOF
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for cand in "${candidates[@]}"; do
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import_name="${cand#./}"
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echo " _ \"github.com/envoyproxy/go-control-plane/${import_name}\"" >> "${OUTFILE}"
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done
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echo ")" >> "${OUTFILE}"
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goimports -w "${OUTFILE}"
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mv -f "${OUTFILE}" ../../agent/xds
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)
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echo "tidying dependencies..."
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make go-mod-tidy
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