c85671ce51
`git log --format` doesn't add a newline after the last line. This causes `read` to ignore that line, losing the last line (corresponding to the first commit). Use `git log --tformat` instead, which terminates the last line. Closes scylladb/scylladb#27317
63 lines
2.0 KiB
Bash
Executable File
63 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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#
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# Refresh git submodules by fast-forward merging them to the tip of the
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# master branch of their respective repositories and committing the
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# update with a default commit message of "git submodule summary".
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#
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# Copyright (C) 2020-present ScyllaDB
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#
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# SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
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#
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set -euo pipefail
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trap 'echo "error $? in $0 line $LINENO"' ERR
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# The following is the default list of submodules to refresh. To only refresh
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# some of them, pass the list of modules to refresh as arguments. For example,
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# "scripts/refresh-submodules.sh seastar tools/python3" only refreshes the
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# two submodules seastar and tools/python3.
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submodules=(
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seastar
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tools/python3
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)
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for ent in "${@:-${submodules[@]}}"; do
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submodule=${ent%%:*}
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[ ${submodule} == ${ent} ] && branch="master" || branch=${ent#*:}
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bump_to=origin/${branch}
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pushd .
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cd $submodule
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git fetch origin ${branch}
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if ! git merge-base --is-ancestor HEAD ${bump_to}; then
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echo "Non fast-forward changes detected! Fire three red flares from your flare pistol."
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exit 1
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fi
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# collect the summary
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head_ref=$(git rev-parse --short=8 HEAD)
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branch_ref=$(git rev-parse --short=8 origin/${branch})
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count=$(git rev-list --first-parent --count HEAD..${bump_to})
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# create a summary using the output format of "git submodule summary"
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SUMMARY="
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* ${submodule} ${head_ref}...${branch_ref} (${count}):
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$(git log --pretty='tformat: %H %s' --first-parent HEAD..${bump_to} | while IFS= read -r line; do
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SUBJECT=$(echo $line | cut -d' ' -f2-)
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echo " > ${SUBJECT}"
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if [[ "$SUBJECT" == "Merge "* ]]; then
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COMMIT=$(echo $line | cut -d' ' -f1)
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git log --pretty='format: %s' --no-merges ${COMMIT}^1..${COMMIT}
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echo
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fi
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done)
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"
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# fast-forward to origin/master
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git merge --ff-only ${bump_to}
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popd
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if [ ! -z "$SUMMARY" ]; then
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git commit --edit -m "Update $submodule submodule" -m "$SUMMARY" $submodule
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fi
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done
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