102 lines
3.6 KiB
Bash
Executable File
102 lines
3.6 KiB
Bash
Executable File
#!/bin/bash
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#
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# Maintenence operations at midnight.
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# This script called usually by the cron - in this case the CRON variable
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# must be set in crontab and exported to the script.
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#
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# Author: Kovács Zoltán <kovacs.zoltan@smartfront.hu>
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# 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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# 2023-06-18 v1.0
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# new: forked from the "SMARTERP_skeleton" repository.
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# mod: "instance" => "service"
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# 2021-02-15 v0.5
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# fix: omits the error message when there is no services at all
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# 2021-02-05 v0.4
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# fix: proper $PATH settings in Debian environment as well
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# 2021-02-04 v0.3
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# fix: decimal point trouble in non-english environments (eg. Hungarian)
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# 2021-01-05 v0.2
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# fix: LANG=C and LC_ALL=C initialisations have removed, because these may
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# interfere with UTF-8 file name encoding in Java calls:
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# https://ogris.de/howtos/java-utf8-filenames.html
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# fix: Missing message.
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# 2020-11-12 v0.1 Initial release
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# Accepted environment variables and their defaults.
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#
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CRON=${CRON-""} # Does it run from cron?
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SERVICE_BASE=${SERVICE_BASE-"$HOME/services"} # Services' folder path
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SLEEP_BETWEEN=${SLEEP_BETWEEN-"1"} # Secs between forks
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# There is nothing to configure below (I hope).
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###############################################
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# Messages.
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#
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MSG_MISSINGDEP="Fatal: missing dependency"
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# Basic environment settings.
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#
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# Corrects the PATH if the operating system didn't loaded yet;
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# it is a bug with cron pam_env, I think.
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if [ -n "$CRON" ]; then
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[[ -r "/etc/profile" ]] && source "/etc/profile"
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# Ubuntu gets the initial environment from a separate file.
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if [ -r "/etc/environment" ]; then
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# Extracts from this file, strips the right part w/o quotes.
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includepath=$(cat "/etc/environment" | $(which egrep) '^PATH=')
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includepath=${includepath:5}
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includepath="${includepath%\"}"; includepath="${includepath#\"}"
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[[ -n "$includepath" ]] && PATH="$PATH:$includepath"
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unset includepath
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fi
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# We need the $HOME/bin as well.
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PATH="$HOME/bin:$PATH"
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fi
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# We need also the sbin directories.
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if ! [[ "$PATH" =~ '/sbin:' ]]; then PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"; fi
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# Checks the dependencies.
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#
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TR=$(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 printf sleep
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do
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if [ -n "$(which $item)" ]
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then export $(echo $item | "$TR" '[:lower:]' '[:upper:]')=$(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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# Checks and sanitizations.
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#
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if [ -z "$SERVICE_BASE" -o ! -d "$SERVICE_BASE" ]; then exit 1; fi
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SLEEP_BETWEEN=$("$PRINTF" '%.2f' "$SLEEP_BETWEEN" 2>/dev/null) # To float
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# Launches the worker scripts with the same name, one for every services.
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# Services are subfolders of the $SERVICE_BASE folder set above.
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TOOLS_BASE="tools" # Relative path to worker scripts
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WORKERFILE="$("$BASENAME" "$0")" # Same filename
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# Gets the service folders, give up if none.
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SERVICES="$(cd "$SERVICE_BASE"; ls -d */ 2>/dev/null)"
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[[ -z "$SERVICES" ]] && exit
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# Eumerates the service folders.
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for service in $SERVICES ""
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do
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# Safety first...
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if [ -n "$service" ]; then
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# Forks the worker if it does exist and does runnable.
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# Passes all remaining command line parameters.
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if [ -x "$SERVICE_BASE/$service$TOOLS_BASE/$WORKERFILE" ]; then
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[[ -n "$CRON" ]] && export PATH USER
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"$SERVICE_BASE/$service$TOOLS_BASE/$WORKERFILE" "$@" &
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# Optionally reduces the fork frequency.
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"$SLEEP" ${SLEEP_BETWEEN//,/.} # decimal point need
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fi
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fi
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done
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# Done with workers.
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# That's all, Folks! :)
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