84 lines
3.1 KiB
Bash
84 lines
3.1 KiB
Bash
#!/bin/bash
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#
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# Periodic maintenance operations for a Nextcloud instance.
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# This script is usually called by cron (perhaps indirectly).
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#
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# Author: Kovács Zoltán <kovacsz@marcusconsulting.hu>
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# License: GNU/GPL v3+ (https://www.gnu.org/licenses/gpl-3.0.en.html)
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# 2025-11-21 v0.1 Initial release
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# Accepted environment variables and their defaults.
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PAR_BASEDIR=${PAR_BASEDIR:-""} # Service's base folder.
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# Other initialisations.
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COMMANDLINE="php /var/www/html/cron.php"
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COMMANDUSER="www-data"
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SERVICENAME="nextcloud"
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YMLFILE="docker-compose.yml"
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# Messages.
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MSG_MISSINGDEP="Fatal: missing dependency"
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MSG_MISSINGYML="Fatal: didn't find the docker-compose.yml file"
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# Checks the dependencies.
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TR=$(which tr 2>/dev/null)
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if [ -z "$TR" ]; then echo "$MSG_MISSINGDEP tr."; exit 1 ; fi
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for item in basename dirname docker readlink
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do
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if [ -n "$(which $item)" ]
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then export $(echo $item | "$TR" '[:lower:]' '[:upper:]' | "$TR" '-' '_')=$(which $item)
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else echo "$MSG_MISSINGDEP $item." >&2; exit 1; fi
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done
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# All dependencies are available via "$THECOMMAND" (upper case) call.
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#
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# Let's find which version of docker-compose is installed.
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if [ $($DOCKER compose version 2>&1 >/dev/null; echo $?) -eq 0 ]; then
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# We'll use v2 if it is available.
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DOCKER_COMPOSE="$DOCKER"
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commandstring="compose"
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else
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# Otherwise falling back to v1.
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DOCKER_COMPOSE="$(which docker-compose)"
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commandstring=""
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fi
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# One of the two is mandatory.
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if [ -z "$DOCKER_COMPOSE" ];then echo "$MSG_MISSINGDEP docker-compose" >&2; exit 1; fi
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# Below docker-compose should be called as "$DOCKER_COMPOSE" $commandstring sequence.
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# Where I'm?
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# https://gist.github.com/TheMengzor/968e5ea87e99d9c41782
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SOURCE="$0"
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while [ -h "$SOURCE" ]; do
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# resolve $SOURCE until the file is no longer a symlink
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SCRPATH="$( cd -P "$("$DIRNAME" "$SOURCE" )" && pwd )" #"
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SOURCE="$("$READLINK" "$SOURCE")"
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# if $SOURCE was a relative symlink, we need to resolve it
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# relative to the path where the symlink file was located
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[[ $SOURCE != /* ]] && SOURCE="$SCRPATH/$SOURCE"
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done; SCRPATH="$( cd -P "$("$DIRNAME" "$SOURCE" )" && pwd )" #"
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# Searches the base folder, containing a docker-compose.yml file.
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# Called from the base folder (./)?
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BASE_DIR="$PAR_BASEDIR"
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TEST_DIR="$SCRPATH"
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[[ -z "$BASE_DIR" ]] && [[ -r "$TEST_DIR/$YMLFILE" ]] && BASE_DIR="$TEST_DIR"
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# Called from ./tools?
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TEST_DIR="$("$DIRNAME" "$TEST_DIR")"
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[[ -z "$BASE_DIR" ]] && [[ -r "$TEST_DIR/$YMLFILE" ]] && BASE_DIR="$TEST_DIR"
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# Called from ./tools/*.d?
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TEST_DIR="$("$DIRNAME" "$TEST_DIR")"
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[[ -z "$BASE_DIR" ]] && [[ -r "$TEST_DIR/$YMLFILE" ]] && BASE_DIR="$TEST_DIR"
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# On failure gives it up here silently.
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if [ -z "$BASE_DIR" -o ! -r "$BASE_DIR/$YMLFILE" ]; then
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echo "$MSG_MISSINGYML" >&2; exit 1
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fi
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# Only if the service is running.
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if [ -n "$(cd "$BASE_DIR"; "$DOCKER_COMPOSE" $commandstring ps --services --filter "status=running")" ]; then
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# Runs command COMMANDLINE on service SERVICENAME as COMMANDUSER.
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SERVICENAME="$("$BASENAME" "$BASE_DIR")-$SERVICENAME-1"
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"$DOCKER" exec -u "$COMMANDUSER" "$SERVICENAME" $COMMANDLINE
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fi
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# That's all, Folks!
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