mirror of
https://github.com/github/codeql.git
synced 2025-12-16 16:53:25 +01:00
ef9fb0873f
adapted from [the ruby instructions](https://github.com/github/codeql/blob/main/ruby/doc/prepare-db-upgrade.md)
108 lines
2.2 KiB
Bash
Executable File
108 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Prepare the downgrade script directory for a Python database schema downgrade.
|
|
|
|
set -e
|
|
set -u
|
|
|
|
app_name="$(basename "$0")"
|
|
|
|
usage()
|
|
{
|
|
exit_code="$1"
|
|
shift
|
|
|
|
cat >&2 <<EOF
|
|
${app_name}: $@
|
|
${app_name}: Generate skeleton downgrade script.
|
|
Usage: ${app_name} [--prev_hash <COMMITISH>]"
|
|
|
|
--prev-hash <COMMITISH>
|
|
Hash/branch to use to get SHA1 for previous DB scheme.
|
|
Default: origin/main
|
|
|
|
Must be run within the git repo needing an update.
|
|
EOF
|
|
exit "${exit_code}"
|
|
}
|
|
|
|
prev_hash="origin/main"
|
|
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
-x)
|
|
set -x
|
|
;;
|
|
-h | --help)
|
|
usage 0
|
|
;;
|
|
--prev-hash)
|
|
if [ $# -eq 1 ]; then
|
|
usage 2 "--prev-hash requires Commit/Branch option"
|
|
fi
|
|
shift
|
|
prev_hash="$1"
|
|
;;
|
|
--)
|
|
shift
|
|
break
|
|
;;
|
|
-*)
|
|
usage 2 "Unrecognised option: $1"
|
|
;;
|
|
*)
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
if [ $# -gt 0 ]; then
|
|
usage 2 "Unrecognised operand: $1"
|
|
fi
|
|
|
|
scheme_file_name="semmlecode.python.dbscheme"
|
|
scheme_file="ql/lib/${scheme_file_name}"
|
|
downgrade_root="ql/downgrades"
|
|
|
|
check_hash_valid()
|
|
{
|
|
if [ ${#2} -ne 40 ]; then
|
|
echo "Did not get expected $1 hash: $2" >&2
|
|
exit 2
|
|
fi
|
|
}
|
|
|
|
# Get the hash of the previous and current DB Schema files
|
|
prev_hash="$(git show "${prev_hash}:python/${scheme_file}" | git hash-object --stdin)"
|
|
check_hash_valid previous "${prev_hash}"
|
|
current_hash="$(git hash-object "${scheme_file}")"
|
|
check_hash_valid current "${current_hash}"
|
|
if [ "${current_hash}" = "${prev_hash}" ]; then
|
|
echo "No work to be done."
|
|
exit
|
|
fi
|
|
|
|
# Copy current and new dbscheme into the downgrade dir
|
|
downgradedir="${downgrade_root}/${current_hash}"
|
|
mkdir -p "${downgradedir}"
|
|
|
|
cp "${scheme_file}" "${downgradedir}/old.dbscheme"
|
|
git cat-file blob "${prev_hash}" > "${downgradedir}/${scheme_file_name}"
|
|
|
|
# Create the template downgrade.properties file.
|
|
cat <<EOF > "${downgradedir}/downgrade.properties"
|
|
description: <INSERT DESCRIPTION HERE>
|
|
compatibility: full|backwards|partial|breaking
|
|
EOF
|
|
|
|
# Tell user what we've done
|
|
cat <<EOF
|
|
Created downgrade directory here:
|
|
${downgradedir}
|
|
|
|
Please update:
|
|
${downgradedir}/downgrade.properties
|
|
with appropriate downgrade instructions
|
|
EOF
|