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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,247 @@ | ||
| #!/bin/sh | ||
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| /mysql-backup $@ | ||
| . /functions.sh | ||
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| if [[ -n "$DB_DUMP_DEBUG" ]]; then | ||
| set -x | ||
| fi | ||
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| # get all variables from environment variables or files (e.g. VARIABLE_NAME_FILE) | ||
| # (setting defaults happens here, too) | ||
| file_env "DB_SERVER" | ||
| file_env "DB_PORT" | ||
| file_env "DB_USER" | ||
| file_env "DB_PASS" | ||
| file_env "DB_NAMES" | ||
| file_env "DB_NAMES_EXCLUDE" | ||
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| file_env "DB_DUMP_FREQ" "1440" | ||
| file_env "DB_DUMP_BEGIN" "+0" | ||
| file_env "DB_DUMP_DEBUG" | ||
| file_env "DB_DUMP_TARGET" "/backup" | ||
| file_env "DB_DUMP_BY_SCHEMA" | ||
| file_env "DB_DUMP_KEEP_PERMISSIONS" "true" | ||
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| file_env "DB_RESTORE_TARGET" | ||
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| file_env "AWS_ENDPOINT_URL" | ||
| file_env "AWS_ENDPOINT_OPT" | ||
| file_env "AWS_CLI_OPTS" | ||
| file_env "AWS_CLI_S3_CP_OPTS" | ||
| file_env "AWS_ACCESS_KEY_ID" | ||
| file_env "AWS_SECRET_ACCESS_KEY" | ||
| file_env "AWS_DEFAULT_REGION" | ||
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| file_env "SMB_USER" | ||
| file_env "SMB_PASS" | ||
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| file_env "TMP_PATH" "/tmp" | ||
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| file_env "COMPRESSION" "gzip" | ||
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| if [[ -n "$DB_DUMP_DEBUG" ]]; then | ||
| set -x | ||
| fi | ||
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| # ensure it is defined | ||
| MYSQLDUMP_OPTS=${MYSQLDUMP_OPTS:-} | ||
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| # login credentials | ||
| if [ -n "${DB_USER}" ]; then | ||
| DBUSER="-u${DB_USER}" | ||
| else | ||
| DBUSER= | ||
| fi | ||
| if [ -n "${DB_PASS}" ]; then | ||
| DBPASS="-p${DB_PASS}" | ||
| else | ||
| DBPASS= | ||
| fi | ||
|
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| # database server | ||
| if [ -z "${DB_SERVER}" ]; then | ||
| echo "DB_SERVER variable is required. Exiting." | ||
| exit 1 | ||
| fi | ||
| # database port | ||
| if [ -z "${DB_PORT}" ]; then | ||
| echo "DB_PORT not provided, defaulting to 3306" | ||
| DB_PORT=3306 | ||
| fi | ||
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| # | ||
| # set compress and decompress commands | ||
| COMPRESS= | ||
| UNCOMPRESS= | ||
| case $COMPRESSION in | ||
| gzip) | ||
| COMPRESS="gzip" | ||
| UNCOMPRESS="gunzip" | ||
| EXTENSION="tgz" | ||
| ;; | ||
| bzip2) | ||
| COMPRESS="bzip2" | ||
| UNCOMPRESS="bzip2 -d" | ||
| EXTENSION="tbz2" | ||
| ;; | ||
| *) | ||
| echo "Unknown compression requested: $COMPRESSION" >&2 | ||
| exit 1 | ||
| esac | ||
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| # temporary dump dir | ||
| TMPDIR="${TMP_PATH}/backups" | ||
| TMPRESTORE="${TMP_PATH}/restorefile" | ||
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| # this is global, so has to be set outside | ||
| declare -A uri | ||
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| if [[ -n "$DB_RESTORE_TARGET" ]]; then | ||
| # Execute additional scripts for pre backup restore processing. For example, | ||
| # uncompress a tarball that contains the tarballs for the sql dump and a | ||
| # wordpress installation. | ||
| if [ -d /scripts.d/pre-restore/ ]; then | ||
| for i in $(ls /scripts.d/pre-restore/*.sh); do | ||
| if [ -x $i ]; then | ||
| DB_RESTORE_TARGET=${DB_RESTORE_TARGET} DB_DUMP_DEBUG=${DB_DUMP_DEBUG} $i | ||
| fi | ||
| done | ||
| fi | ||
| uri_parser ${DB_RESTORE_TARGET} | ||
| if [[ "${uri[schema]}" == "file" ]]; then | ||
| cp $DB_RESTORE_TARGET $TMPRESTORE 2>/dev/null | ||
| elif [[ "${uri[schema]}" == "s3" ]]; then | ||
| [[ -n "$AWS_ENDPOINT_URL" ]] && AWS_ENDPOINT_OPT="--endpoint-url $AWS_ENDPOINT_URL" | ||
| aws ${AWS_CLI_OPTS} ${AWS_ENDPOINT_OPT} s3 cp ${AWS_CLI_S3_CP_OPTS} "${DB_RESTORE_TARGET}" $TMPRESTORE | ||
| elif [[ "${uri[schema]}" == "smb" ]]; then | ||
| if [[ -n "$SMB_USER" ]]; then | ||
| UPASSARG="-U" | ||
| UPASS="${SMB_USER}%${SMB_PASS}" | ||
| elif [[ -n "${uri[user]}" ]]; then | ||
| UPASSARG="-U" | ||
| UPASS="${uri[user]}%${uri[password]}" | ||
| else | ||
| UPASSARG= | ||
| UPASS= | ||
| fi | ||
| if [[ -n "${uri[userdomain]}" ]]; then | ||
| UDOM="-W ${uri[userdomain]}" | ||
| else | ||
| UDOM= | ||
| fi | ||
| smbclient -N "//${uri[host]}/${uri[share]}" ${UPASSARG} "${UPASS}" ${UDOM} -c "get ${uri[sharepath]} ${TMPRESTORE}" | ||
| fi | ||
| # did we get a file? | ||
| if [[ -f "$TMPRESTORE" ]]; then | ||
| if [ "$SINGLE_DATABASE" = "true" ]; then | ||
| DBDATABASE="-D$DB_NAMES" | ||
| else | ||
| DBDATABASE= | ||
| fi | ||
| workdir="${TMP_PATH}/restore.$$" | ||
| rm -rf $workdir | ||
| mkdir -p $workdir | ||
| $UNCOMPRESS < $TMPRESTORE | tar -C $workdir -xvf - | ||
| RESTORE_OPTS=${RESTORE_OPTS:-} | ||
| # If there are multiple schemas in the archive (e.g. DB_DUMP_BY_SCHEMA was used) and DB_NAMES is set, | ||
| # restore only the required databases | ||
| if [[ $(ls -1q $workdir/* | wc -l) -gt 1 ]] && [[ -n "$DB_NAMES" ]]; then | ||
| for onedb in $DB_NAMES; do | ||
| echo "Restoring $onedb from " $workdir/$onedb* | ||
| # /!\ If a schema has a name that begins with another one, it will executed multiple times the other one | ||
| cat $workdir/$onedb* | mysql $RESTORE_OPTS -h $DB_SERVER -P $DB_PORT $DBUSER $DBPASS | ||
| done | ||
| else | ||
| cat $workdir/* | mysql $RESTORE_OPTS -h $DB_SERVER -P $DB_PORT $DBUSER $DBPASS $DBDATABASE | ||
| fi | ||
| rm -rf $workdir | ||
| /bin/rm -f $TMPRESTORE | ||
| else | ||
| echo "Could not find restore file $DB_RESTORE_TARGET" | ||
| exit 1 | ||
| fi | ||
| # Execute additional scripts for post backup restore processing. For example, | ||
| # uncompress a tarball that contains the files of a wordpress installation | ||
| if [ -d /scripts.d/post-restore/ ]; then | ||
| for i in $(ls /scripts.d/post-restore/*.sh); do | ||
| if [ -x $i ]; then | ||
| DB_RESTORE_TARGET=${DB_RESTORE_TARGET} DB_DUMP_DEBUG=${DB_DUMP_DEBUG} $i | ||
| fi | ||
| done | ||
| fi | ||
| else | ||
| # wait for the next time to start a backup | ||
| # for debugging | ||
| echo Starting at $(date) | ||
| last_run=0 | ||
| current_time=$(date +"%s") | ||
| freq_time=$(($DB_DUMP_FREQ*60)) | ||
| # get the begin time on our date | ||
| # REMEMBER: we are using the basic date package in alpine | ||
| # could be a delay in minutes or an absolute time of day | ||
| if [ -n "$DB_DUMP_CRON" ]; then | ||
| # calculate how long until the next cron instance is met | ||
| waittime=$(wait_for_cron "$DB_DUMP_CRON" "$current_time" $last_run) | ||
| elif [[ $DB_DUMP_BEGIN =~ ^\+(.*)$ ]]; then | ||
| waittime=$(( ${BASH_REMATCH[1]} * 60 )) | ||
| target_time=$(($current_time + $waittime)) | ||
| else | ||
| today=$(date +"%Y-%m-%d") | ||
| target_time=$(date --date="${today} ${DB_DUMP_BEGIN}" +"%s") | ||
|
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| if [[ "$target_time" < "$current_time" ]]; then | ||
| target_time=$(($target_time + 24*60*60)) | ||
| fi | ||
|
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| waittime=$(($target_time - $current_time)) | ||
| fi | ||
|
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| # If RUN_ONCE is set, don't wait | ||
| if [ -z "${RUN_ONCE}" ]; then | ||
| sleep $waittime | ||
| last_run=$(date +"%s") | ||
| fi | ||
|
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||
| # enter the loop | ||
| exit_code=0 | ||
| while true; do | ||
| # make sure the directory exists | ||
| mkdir -p $TMPDIR | ||
| do_dump | ||
| [ $? -ne 0 ] && exit_code=1 | ||
| # we can have multiple targets | ||
| for target in ${DB_DUMP_TARGET}; do | ||
| backup_target ${target} | ||
| [ $? -ne 0 ] && exit_code=1 | ||
| done | ||
| # remove lingering file | ||
| /bin/rm ${TMPDIR}/${SOURCE} | ||
|
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| # wait, unless RUN_ONCE is set | ||
| current_time=$(date +"%s") | ||
| if [ -n "${RUN_ONCE}" ]; then | ||
| exit $exit_code | ||
| elif [ -n "${DB_DUMP_CRON}" ]; then | ||
| waittime=$(wait_for_cron "${DB_DUMP_CRON}" "$current_time" $last_run) | ||
| else | ||
| current_time=$(date +"%s") | ||
| # Calculate how long the previous backup took | ||
| backup_time=$(($current_time - $target_time)) | ||
| # Calculate how many times the frequency time was passed during the previous backup. | ||
| freq_time_count=$(($backup_time / $freq_time)) | ||
| # Increment the count with one because we want to wait at least the frequency time once. | ||
| freq_time_count_to_add=$(($freq_time_count + 1)) | ||
| # Calculate the extra time to add to the previous target time | ||
| extra_time=$(($freq_time_count_to_add*$freq_time)) | ||
| # Calculate the new target time needed for the next calculation | ||
| target_time=$(($target_time + $extra_time)) | ||
| # Calculate the wait time | ||
| waittime=$(($target_time - $current_time)) | ||
| fi | ||
| sleep $waittime | ||
| last_run=$(date +"%s") | ||
| done | ||
| fi |