Rewrote the usage and help screens.
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Louwrentius
parent
5b840d33c3
commit
b1af50040f
142
ppss.sh
142
ppss.sh
@ -40,9 +40,16 @@ trap 'kill_process; ' INT
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SCRIPT_NAME="Distributed Parallel Processing Shell Script"
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SCRIPT_VERSION="2.34"
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# The first argument to this script is always the 'mode'.
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MODE="$1"
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shift
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# The first argument to this script can be a mode.
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MODES="start config stop pause continue deploy status erase kill"
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for x in $MODES
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do
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if [ "$x" == "$1" ]
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then
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MODE="$1"
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shift
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fi
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done
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# The working directory of PPSS can be set with
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# export PPSS_DIR=/path/to/workingdir
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@ -100,23 +107,83 @@ SCRIPT="" # Custom user script that is executed by
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ITEM_ESCAPED=""
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NODE_STATUS="$PPSS_DIR/status.txt"
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showusage () {
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showusage_short () {
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echo
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echo "$SCRIPT_NAME"
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echo "|P|P|S|S| $SCRIPT_NAME $SCRIPT_VERSION"
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echo
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echo "usage: $0 [ -d <sourcedir> | -f <sourcefile> ] [ -c '<command> \"%ITEM%\"' ]"
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echo " [ -C <configfile> ] [ -j ] [ -l <logfile> ] [ -p <# jobs> ]"
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echo
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echo "Examples:"
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echo " $0 -d /dir/with/some/files -c 'gzip '"
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echo " $0 -d /dir/with/some/files -c 'gzip \"%ITEM\"'"
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echo " $0 -d /dir/with/some/files -c 'cp \"%ITEM\" /tmp' -p 2"
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}
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showusage_normal () {
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echo
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echo "|P|P|S|S| - $SCRIPT_NAME -"
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echo "Version: $SCRIPT_VERSION"
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echo
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echo "PPSS is a Bash shell script that executes commands in parallel on a set "
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echo "of items, such as files, or lines in a file."
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echo "of items, such as files in a directory, or lines in a file."
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echo
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echo "Usage: $0 MODE [ options ]"
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echo " or "
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echo "Usage: $0 MODE -c <config file>"
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echo "This short summary only discuesses options for stand-alone mode. for all "
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echo "options, run PPSS with the options --help"
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echo
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echo "Modes are:"
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echo "Usage $0 [ options ]"
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echo
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echo -e "--command | -c Command to execute. Syntax: '<command> ' including the single quotes."
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echo -e " Example: -c 'ls -alh '. It is also possible to specify where an item "
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echo -e " must be inserted: 'cp \"\$ITEM\" /somedir'."
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echo
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echo -e "--sourcedir | -d Directory that contains files that must be processed. Individual files"
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echo -e " are fed as an argument to the command that has been specified with -c."
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echo
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echo -e "--sourcefile | -f Each single line of the supplied file will be fed as an item to the"
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echo -e " command that has been specified with -c."
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echo
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echo -e "--config | -C If the mode is config, a config file with the specified name will be"
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echo -e " generated based on all the options specified. In the other modes".
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echo -e " this option will result in PPSS reading the config file and start"
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echo -e " processing items based on the settings of this file."
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echo
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echo -e "--enable-ht | -j Enable hyperthreading. Is disabled by default."
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echo
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echo -e "--log | -l Sets the name of the log file. The default is ppss-log.txt."
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echo
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echo -e "--processes | -p Start the specified number of processes. Ignore the number of available"
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echo -e " CPU's."
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echo
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echo -e "Example: encoding some wav files to mp3 using lame:"
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echo
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echo -e "$0 -d /path/to/wavfiles -c 'lame '"
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echo
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echo -e "Extended usage: use --help"
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echo
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}
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if [ "$#" == "0" ]
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then
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showusage_short
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exit 1
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fi
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showusage_long () {
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echo
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echo "|P|P|S|S| - $SCRIPT_NAME -"
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echo "Version: $SCRIPT_VERSION"
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echo
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echo "PPSS is a Bash shell script that executes commands in parallel on a set "
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echo "of items, such as files in a directory, or lines in a file."
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echo
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echo "Usage: $0 [ MODE ] [ options ]"
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echo
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echo "Modes are optional and mainly used for running in distributed mode. Modes are:"
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echo
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echo " standalone For execution of PPSS on a single host."
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echo " node For execution of PPSS on a node, that is part of a 'cluster'."
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echo " config Generate a config file based on the supplied option parameters."
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echo " deploy Deploy PPSS and related files on the specified nodes."
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echo " erase Erase PPSS and related files from the specified nodes."
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@ -149,10 +216,6 @@ showusage () {
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echo -e "--processes | -p Start the specified number of processes. Ignore the number of available"
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echo -e " CPU's."
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echo
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echo -e "--force | -F Force PPSS to run, even anoter instance of PPSS is already running."
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echo " Please note that any running PPSS instance will not exit anymore if"
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echo " you start multiple instances, although they will run fine."
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echo
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echo -e "The following options are used for distributed execution of PPSS."
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echo
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echo -e "--master | -m Specifies the SSH server that is used for communication between nodes."
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@ -191,15 +254,15 @@ showusage () {
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echo
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echo -e "Example: encoding some wav files to mp3 using lame:"
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echo
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echo -e "$0 standalone -c 'lame ' -d /path/to/wavfiles -j "
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echo -e "$0 -c 'lame ' -d /path/to/wavfiles -j "
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echo
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echo -e "Running PPSS based on a configuration file."
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echo
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echo -e "$0 standalone -C config.cfg"
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echo -e "$0 -C config.cfg"
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echo
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echo -e "Running PPSS on a client as part of a cluster."
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echo
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echo -e "$0 node -d /somedir -c 'cp "$ITEM" /some/destination' -s 10.0.0.50 -u ppss -t -k ppss-key.key"
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echo -e "$0 -d /somedir -c 'cp "$ITEM" /some/destination' -s 10.0.0.50 -u ppss -t -k ppss-key.key"
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echo
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}
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@ -212,9 +275,10 @@ kill_process () {
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sleep 1
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if [ ! -z "$SSH_MASTER_PID" ]
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then
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kill -9 "$SSH_MASTER_PID"
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kill -9 "$SSH_MASTER_PID" >> /dev/null 2>&1
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fi
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sleep 1
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echo
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log INFO "Finished."
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}
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@ -380,8 +444,11 @@ do
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shift 2
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;;
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--help|-h )
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showusage
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-h )
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showusage_normal
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exit 1;;
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--help)
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showusage_long
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exit 1;;
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--homedir|-H )
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if [ ! -z "$2" ]
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@ -402,11 +469,6 @@ do
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add_var_to_config LOGFILE "$LOGFILE"
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shift 2
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;;
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--force|-F )
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FORCE=yes
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add_var_to_config FORCE "$FORCE"
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shift 1
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;;
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--workingdir|-w )
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WORKINGDIR="$2"
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add_var_to_config WORKINGDIR "$WORKINGDIR"
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@ -474,7 +536,7 @@ do
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exit 0
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;;
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* )
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showusage
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showusage_normal
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exit 1;;
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esac
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done
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@ -516,7 +578,7 @@ init_vars () {
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echo
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log ERROR "No command specified."
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echo
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showusage
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showusage_normal
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cleanup
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exit 1
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fi
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@ -813,7 +875,7 @@ start_ppss_on_node () {
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NODE="$1"
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log INFO "Starting PPSS on node $NODE."
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ssh $SSH_KEY $USER@$NODE "cd $PPSS_DIR ; screen -d -m -S PPSS ./ppss.sh node --config $CONFIG"
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ssh $SSH_KEY $USER@$NODE "cd $PPSS_DIR ; screen -d -m -S PPSS $0 node --config $CONFIG"
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}
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@ -1251,8 +1313,8 @@ start_single_worker () {
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# informed that a worker just finished / died.
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# Tis allows the listener to determine if all processes
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# are finished and it is time to stop.
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echo
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log INFO "Waiting for remaining jobs to finish..."
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#echo -en "\033[1A"
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echo "$STOP_KEY" > $FIFO
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return 1
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else
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@ -1407,6 +1469,7 @@ listen_for_job () {
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# The start_single_worker method sends a special signal to
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# inform the listener that a worker is finished.
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# If all workers are finished, it is time to stop.
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# This mechanism makes PPSS asynchronous.
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if [ "$event" == "$STOP_KEY" ]
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then
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((DIED++))
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@ -1512,14 +1575,6 @@ show_status () {
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main () {
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case $MODE in
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node|standalone )
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init_vars
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test_server
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get_all_items
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listen_for_job "$MAX_NO_OF_RUNNING_JOBS" & 2>&1 >> /dev/null
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LISTENER_PID=$!
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start_all_workers
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;;
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start )
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# This option only starts all nodes.
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display_header
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@ -1607,9 +1662,14 @@ main () {
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;;
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* )
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showusage
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exit 1
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init_vars
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test_server
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get_all_items
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listen_for_job "$MAX_NO_OF_RUNNING_JOBS" & 2>&1 >> /dev/null
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LISTENER_PID=$!
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start_all_workers
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;;
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esac
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}
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