Mercurial > libervia-backend
view src/sat.sh @ 2109:85f3e12e984d
core (memory/cache): file caching handling, first draft:
instead of having file caching handled individually by plugins, a generic module has been added in memory.
- Cache can be global or associated to a profile. In the later case, client.cache can be used.
- Cache are managed with unique ids (which can be any unique unicode, hash uuid, or something else).
- To know if a file is in cache, getFilePath is used: if the file is in cache, its absolute path is returned, else None is returned.
- To cache a file, cacheData is used with at list the source of cache (most of time plugin import name), and unique id. The method return file opened in binary writing mode (so cacheData can - and should - be used with "with" statement).
- 2 files will be created: a metadata file (named after the unique id), and the actual file.
- each file has a end of life time, after it, the cache is invalidated and the file must be requested again.
author | Goffi <goffi@goffi.org> |
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date | Thu, 05 Jan 2017 20:23:38 +0100 |
parents | 7a07f232e7cb |
children | a34b4fca16e2 |
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#!/bin/sh DEBUG="" DAEMON="" PYTHON="python2" kill_process() { # $1 is the file containing the PID to kill, $2 is the process name if [ -f $1 ]; then PID=`cat $1` if ps -p $PID > /dev/null; then printf "Terminating $2... " kill $PID while ps -p $PID > /dev/null; do sleep 0.2 done printf "OK\n" else echo "No running process of ID $PID... removing PID file" rm -f $1 fi else echo "$2 is probably not running (PID file doesn't exist)" fi } #We use python to parse config files eval `"$PYTHON" << PYTHONEND from sat.core.constants import Const as C from sat.memory.memory import fixLocalDir from ConfigParser import SafeConfigParser from os.path import expanduser, join import sys import codecs import locale sys.stdout = codecs.getwriter(locale.getpreferredencoding())(sys.stdout) fixLocalDir() # XXX: tmp update code, will be removed in the future config = SafeConfigParser(defaults=C.DEFAULT_CONFIG) try: config.read(C.CONFIG_FILES) except: print ("echo \"/!\\ Can't read main config ! Please check the syntax\";") print ("exit 1") sys.exit() env=[] env.append("PID_DIR='%s'" % join(expanduser(config.get('DEFAULT', 'pid_dir')),'')) env.append("LOG_DIR='%s'" % join(expanduser(config.get('DEFAULT', 'log_dir')),'')) env.append("APP_NAME='%s'" % C.APP_NAME) env.append("APP_NAME_FILE='%s'" % C.APP_NAME_FILE) print ";".join(env) PYTHONEND ` APP_NAME="$APP_NAME" PID_FILE="$PID_DIR$APP_NAME_FILE.pid" LOG_FILE="$LOG_DIR$APP_NAME_FILE.log" RUNNING_MSG="$APP_NAME is running" NOT_RUNNING_MSG="$APP_NAME is *NOT* running" # if there is one argument which is "stop", then we kill SàT if [ $# -eq 1 ];then if [ $1 = "stop" ];then kill_process $PID_FILE "$APP_NAME" exit 0 elif [ $1 = "debug" ];then echo "Launching $APP_NAME in debug mode" DEBUG="--debug" elif [ $1 = "fg" ];then echo "Launching $APP_NAME in foreground mode" DAEMON="n" elif [ $1 = "status" ];then if [ -f $PID_FILE ]; then PID=`cat $PID_FILE` ps -p$PID 2>&1 > /dev/null if [ $? = 0 ];then echo "$RUNNING_MSG (pid: $PID)" exit 0 else echo "$NOT_RUNNING_MSG, but a pid file is present (bad exit ?): $PID_FILE" exit 2 fi else echo "$NOT_RUNNING_MSG" exit 1 fi else echo "bad argument, please use one of (stop, debug, fg, status) or no argument" exit 1 fi fi MAIN_OPTIONS="-${DAEMON}o" #Don't change the next lines AUTO_OPTIONS="" ADDITIONAL_OPTIONS="--pidfile $PID_FILE --logfile $LOG_FILE $AUTO_OPTIONS $DEBUG" log_dir=`dirname "$LOG_FILE"` if [ ! -d $log_dir ] ; then mkdir $log_dir fi exec twistd $MAIN_OPTIONS $ADDITIONAL_OPTIONS $APP_NAME_FILE