mirror of https://github.com/istio/api.git
45 lines
2.0 KiB
Bash
Executable File
45 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright Istio Authors
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -eEou pipefail
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# sync.sh keeps pairs of files in sync. Specifically, this is used for multi version protobuf.
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# These files have a unique (comment) header per version, but should have identical proto definitions.
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# To pair two files, The +istio.io/sync-{from,start} tags can be added.
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# For example: In v1beta1/service_entry.proto, we can add `+istio.io/sync-from:networking/v1alpha3/service_entry.proto`.
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# Next, we add `+istio.io/sync-start` to the `v1alpha3/service_entry.proto` file
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FROM_TAG="+istio.io/sync-from"
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START_TAG="+istio.io/sync-start"
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BIG_NUMBER=100000 # If our files are longer than this we have bigger issues..
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find . -name '*.proto' -not -path "./common-protos/*" -print0 | while read -r -d $'\0' file; do
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res="$(grep "${FROM_TAG}" "${file}" || true)"
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if [[ "${res}" != "" ]]; then # We need to sync this file
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replacement="$(echo "${res}" | cut -d: -f2)"
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echo "Syncing ${file} from ${replacement}"
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# First we retain the top section of the file, everything before FROM_TAG
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header="$(grep "${FROM_TAG}" "${file}" -B "${BIG_NUMBER}")"
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# Then we copy the bottom section of the replacement file, everything after START_TAG
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body="$(grep "${START_TAG}" "${replacement}" -A "${BIG_NUMBER}")"
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# And merge them into a single file
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echo "${header}" > "${file}"
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# We skip the first line of the replacement to avoid copying the start tag
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echo "${body}" | tail -n +2 >> "${file}"
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fi
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done
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