git-mirror-async-monitor

#!/bin/bash

# Watch for special file that is touched in the receive hook
# for a repo, and then push changes for that repo.

TRIGGER_ROOT_DIR=/srv/git-hooks-async
TRIGGER_DIR="${TRIGGER_ROOT_DIR}/qemu"

# minimal interval in seconds between pushes
# if shorter than this, we will sleep until we
# can push
MIN_INTERVAL=120

LOGFILE=/home/gituser/logs/git-qemu-async-hook.log

cleanup()
{
    trap - 0 1 2 3 15
    kill -- $$
    exit
}

trap cleanup 0 1 2 3 15


(
last_date=0
curr_date=
delta=
while read ievent
do

    IFS=' ' read -r -a iva <<< "$ievent"

    unset iva[0]
    unset iva[1]
   
    #echo "${ievent}" | grep -q ".* ATTRIB "
    #if [ $? -eq 0 ]

    filename="${iva[@]}"
    if [ "$filename" == "qemu.git-ze8Ooz2g" ] 
    then
        # make sure that regardless of what happens, our script
        # does not go rogue and start hammering github
        curr_date=$(date +%s)
        ((delta = $curr_date - $last_date))
        if [ $delta -lt $MIN_INTERVAL ]
        then
            ((sleep_time = $MIN_INTERVAL - $delta))
            sleep $sleep_time
        fi
        date
        echo "-----------------------"
        echo "git --git-dir=/srv/git/qemu.git push github"

        git --git-dir=/srv/git/qemu.git push github
        date
        echo "fin."
        echo ""
        echo ""
        let last_date=$(date +%s)
    fi
done < <(inotifywait -m -e attrib -e create "${TRIGGER_DIR}")
         # between attrib and create, we can just use 'touch' in
         # the post-receive hook
)> "$LOGFILE" 2>&1