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Refactoring

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m8in
2026-06-27 16:47:38 +02:00
parent cb0a32ac0e
commit 48c040fe56
3 changed files with 34 additions and 48 deletions
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script/host/zfs/composition-sync/sync-send.sh
+21 -41
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@@ -43,13 +43,9 @@ function printFoundCommonSnapshot() {
local _ZFS _RECEIVERHOST _COMMON_SNAPSHOT_CANDIDATE
_ZFS="${1:?"printFoundCommonSnapshot(): Missing first parameter ZFS"}"
_RECEIVERHOST="${2:?"printFoundCommonSnapshot(): Missing second parameter RECEIVERHOST"}"
_COMMON_SNAPSHOT_CANDIDATE="@${3#*@}"
_COMMON_SNAPSHOT_CANDIDATE="${3:?"printFoundCommonSnapshot(): Missing third parameter COMMON_SNAPSHOT_CANDIDATE"}"
readonly _ZFS _RECEIVERHOST _COMMON_SNAPSHOT_CANDIDATE
# Nothing to do
[ "${_COMMON_SNAPSHOT_CANDIDATE}" == "@" ] \
&& return 0
while read -r _ROW
do
if [ "${_ROW}" == "${_ZFS}${_COMMON_SNAPSHOT_CANDIDATE}" ]; then
@@ -84,37 +80,33 @@ function removeReceiverhostsSyncSnapshotsExeptTheCommonOne() {
done < <(zfs list -H -o name -S creation -t snapshot "${_ZFS}" | grep -E "^${_ZFS}@SYNC_${_RECEIVERHOST}_")
}
function sendResume() {
local _RESUME_TOKEN
_RESUME_TOKEN="${1:?"sendResume(): Missing first parameter RESUME_TOKEN"}"
readonly _RESUME_TOKEN
zfs send -t "${_RESUME_TOKEN:?"Missing RESUME_TOKEN"}" \
&& return 0
return 1
}
function send() {
local _COMPOSITION _RECEIVERHOST _RECEIVERS_SNAPSHOT _NOW _ZFS _NEW_SNAPSHOT
local _COMPOSITION _RECEIVERHOST _RECEIVERS_SNAPSHOT _RESUME_TOKEN _NOW _ZFS _NEW_SNAPSHOT
_COMPOSITION="${1:?"send(): Missing first parameter COMPOSITION"}"
_RECEIVERHOST="${2:?"send(): Missing second parameter RECEIVERHOST"}"
_RECEIVERS_SNAPSHOT="${3}"
_RECEIVERS_SNAPSHOT="${3:?"send(): Missing third parameter RECEIVERS_SNAPSHOT"}"
_RESUME_TOKEN="${4}"
_NOW=$(date -u "+%Y-%m-%d_%H:%M:%SZ")
_ZFS=$(composition.printZfsVerified "${_COMPOSITION}")
_NEW_SNAPSHOT="${_ZFS:?"Missing ZFS"}@SYNC_${_RECEIVERHOST:?"Missing RECEIVERHOST"}_${_NOW:?"Missing NOW"}"
readonly _COMPOSITION _RECEIVERHOST _RECEIVERS_SNAPSHOT _NOW _NEW_SNAPSHOT
readonly _COMPOSITION _RECEIVERHOST _RECEIVERS_SNAPSHOT _RESUME_TOKEN _NOW _NEW_SNAPSHOT
[ "${RECEIVERS_SNAPSHOT}" == '@REPLICATION' ] \
&& [ -z "${RESUME_TOKEN}" ] \
&& zfs snapshot "${_NEW_SNAPSHOT}" \
&& zfs send -c -R "${_NEW_SNAPSHOT}" \
&& return 0
[ "${RECEIVERS_SNAPSHOT}" == '@RESUME' ] \
&& [ -n "${RESUME_TOKEN}" ] \
&& zfs send -t "${_RESUME_TOKEN}" \
&& return 0
# This common snapshot is the starting-point, if available.
! _COMMON_SNAPSHOT=$(printFoundCommonSnapshot "${_ZFS}" "${_RECEIVERHOST}" "${_RECEIVERS_SNAPSHOT}") \
&& echo "Failure in sync-send.sh: abort" >&2 \
&& return 1
[ "${_COMMON_SNAPSHOT}" == "" ] \
&& zfs snapshot "${_NEW_SNAPSHOT}" \
&& zfs send -c -R "${_NEW_SNAPSHOT}" \
&& return 0
[ "${_COMMON_SNAPSHOT}" != "" ] \
&& removeReceiverhostsSyncSnapshotsExeptTheCommonOne "${_ZFS}" "${_RECEIVERHOST}" "${_COMMON_SNAPSHOT}" \
&& zfs snapshot "${_NEW_SNAPSHOT}" \
@@ -126,28 +118,16 @@ function send() {
# Parameter 1: Only alphanumeric characters allowed and [.-] if not leading (due to: -oProxyCommand=...).
# Parameter 2: Only alphanumeric characters allowed and [._-] if not leading (due to: -oProxyCommand=...).
# Parameter 3: Only alphanumeric characters allowed and [._:-] if not leading (due to: -oProxyCommand=...), but can be empty.
# Parameter 4: Only alphanumeric characters allowed and [._:-] if not leading (due to: -oProxyCommand=...), but can be empty.
base.set COMPOSITION "${1}" "${REGEX[COMPOSITION]}"
base.set RECEIVERHOST "${2}" "${REGEX[HOST]}"
base.set RECEIVERS_SNAPSHOT "${3}" "${REGEX[SNAPSHOT]}" optional
base.set RESUME_TOKEN "${4}" '^[a-zA-Z0-9][a-zA-Z0-9._:-]*$' optional
base.set COMPOSITION "${1}" "${REGEX[COMPOSITION]}"
base.set RECEIVERHOST "${2}" "${REGEX[HOST]}"
base.set RECEIVERS_SNAPSHOT "${3}" "${REGEX[SNAPSHOT]}"
base.set RESUME_TOKEN "${4}" "${REGEX[RESUMETOKEN]}" optional
! composition.shouldBeSyncedByGivenHost "${COMPOSITION}" "${RECEIVERHOST}" \
&& base.abort "no sync-host available" \
"Host '${RECEIVERHOST}' is no sync-host for composition: '${COMPOSITION}'"
# Resume mode
if [ "${RECEIVERS_SNAPSHOT}" == '@RESUME' ] && [ -n "${RESUME_TOKEN}" ]; then
sendResume "${RESUME_TOKEN}"
# Exit preserving the code
exit $?
fi
send "${COMPOSITION}" "${RECEIVERHOST}" "${RECEIVERS_SNAPSHOT}" \
send "${COMPOSITION}" "${RECEIVERHOST}" "${RECEIVERS_SNAPSHOT}" "${RESUME_TOKEN}" \
&& exit 0
print.failure "Something unexpected happend."