diff --git a/trigger-send b/trigger-send new file mode 100755 index 0000000..dc7708d --- /dev/null +++ b/trigger-send @@ -0,0 +1,31 @@ +#!/bin/bash +#!/bin/bash + + +# (1) Init. +#--------------------------------------------------------# +# (1) Get current absolute dir +ROOT=$(dirname `realpath $0`); + +# (2) Check argc +test $# -lt 2 && echo -e "error: too fewarguments\n\n\e[1mUSAGE\e[0m\n\ttrigger-send \n\n\e[1mARGUMENTS\e[0m\n\t\tThe key of the trigger\n\t\tThe host to send the trigger to\n\t\tThe port to send the trigger to\n" && exit 1; + +# (3) Check @PORT range # +MIN_PORT=1024; +MAX_PORT=49151; +test "$3" -gt "$MAX_PORT" -o "$3" -lt "$MIN_PORT" && echo "error: must be between $MIN_PORT and $MAX_PORT" && exit 1; + +# (4) Set argument explicit names # +TRIGGER_KEY="$1"; +TRIGGER_HOST="$2"; +TRIGGER_PORT="$3"; + + + + +# (2) Send trigger signal +#--------------------------------------------------------# +echo "+ connecting to $TRIGGER_HOST:$TRIGGER_PORT"; +bash -c "exec 4>/dev/tcp/$TRIGGER_HOST/$TRIGGER_PORT; echo -n \"$TRIGGER_KEY\" >&4; "; +echo " + message '$TRIGGER_KEY' sent"; +echo "+ close connection"; \ No newline at end of file diff --git a/trigger-wait b/trigger-wait new file mode 100755 index 0000000..8d87fd0 --- /dev/null +++ b/trigger-wait @@ -0,0 +1,91 @@ +#!/bin/bash +#!/bin/bash + + +# (1) Init. +#--------------------------------------------------------# +# (1) Get current absolute dir +ROOT=$(dirname `realpath $0`); + +# (2) Check argc +test $# -lt 2 && echo -e "error: too fewarguments\n\n\e[1mUSAGE\e[0m\n\ttrigger-wait \n\n\e[1mARGUMENTS\e[0m\n\t\tThe key of the trigger (client must match it)\n\t\tTo port to listen to\n" && exit 1; + +# (3) Check @PORT range # +MIN_PORT=1024; +MAX_PORT=49151; +test "$2" -gt "$MAX_PORT" -o "$2" -lt "$MIN_PORT" && echo "error: must be between $MIN_PORT and $MAX_PORT" && exit 1; + +# (4) Set argument explicit names # +TRIGGER_KEY="$1"; +TRIGGER_PORT="$2"; + +# (5) Create a temporary file # +TMPFILE="/dev/shm/trigger_wait_${TRIGGER_KEY}_pid"; + + +# (6) Define on-exit routine # +LOOP_PID=""; +on_exit(){ + + echo "- killing loop"; + kill -INT $LOOP_PID 2>/dev/null; + + echo "- killing main listener ($TRIGGER_PID)"; + kill -INT $TRIGGER_PID 2>/dev/null; + + # delete tmp file + echo "- deleting tmp file"; + rm $TMPFILE 2>/dev/null; + + exit 1; + +} + + + + +# (2) Launch pool listener +#--------------------------------------------------------# +# (1) Bind-input # +echo -e "\e[32m+\e[0m listen $TRIGGER_PORT"; +$ROOT/bind-input trigger $TRIGGER_PORT > $TMPFILE; +TRIGGER_PID="`cat $TMPFILE`"; + + + +# (3) Launch pool manager +#--------------------------------------------------------# +# infinite listener +( + trap "on_exit;" HUP INT KILL TERM; + + while true; do + + # Listen on port @TRIGGER_PORT + MSG=`$ROOT/read trigger`; + + # Do nothing if empty msg + test -z "$MSG" && sleep .5 && continue; + + echo -e " + received '\e[33m$MSG\e[0m'"; + + # If wrong key + test "$MSG" != "$TRIGGER_KEY" && echo " + wrong key" && sleep .5 && continue; + + # If valid key + echo " + trigger received" && echo -e "\e[31m+\e[0m stop listening on $TRIGGER_PORT" && break; + + done; + +)& +LOOP_PID=$!; + +# (4) Set exit management +#--------------------------------------------------------# +# (1) Set trap for "exit" signals # +trap "kill -INT $LOOP_PID 2>/dev/null;" HUP INT KILL TERM; + +# (2) Wait for main loop to end +wait $LOOP_PID; + +on_exit; \ No newline at end of file