all_see_eye.sh

#! /bin/bash -xeu

BUCKET='nana-camera'
: ${SLACK_WH:?'define SLACK_WH'}

report() {
  local MSG=${1:-'コケた'}
  curl -X POST --data-urlencode "payload={\"text\": \"${MSG}\"}" ${SLACK_WH}
}

take() {
  local outdir=$1
  local to=`date +"${outdir}/%H-%M-%S.jpg"`
  ffmpeg -s 1920x1080 -i /dev/video0 -ss 0 -vframes 1 -f image2 -y ${to}
}
sync () {
  local dir=$1
  local date=$2
  local keyprefix="images/${date}"
  aws s3 sync ${dir} "s3://${BUCKET}/${keyprefix}"
}

main() {
  local date=`date +'%Y/%m/%d'`
  local preminute=''
  local prehour=''
  local outdir=`mktemp -d`
  local takefail=0
  local syncfail=0
  local lasttake=0
  while true; do
    local minute=`date +'%M'`
    local hour=`date +'%H'`
    local now=`date +'%s'`
    local diff=$((now-lasttake))
    if [ ${diff} -lt 10 ]; then
      sleep $((9-diff))
    fi

    if ! take ${outdir}; then
      report "take fail ${takefail} times"
      $((++takefail))
      sleep 10
    fi
    sleep 1
    lasttake=`date +'%s'`
    if [ "${minute}" != "${preminute}" ]; then
      if ! sync ${outdir} ${date}; then
        report "sync fail ${syncfail} times"
        $((++syncfail))
        sleep 120
      fi
      rm -rf ${outdir}
      outdir=`mktemp -d`
      preminute=${minute}
      date=`date +'%Y/%m/%d'`
    fi
    if [ ${takefail} -gt 10 ]; then
      echo "take fail"
      echo "exit"
      report "take fail; exit"
      exit
    fi
    if [ ${syncfail} -gt 5 ]; then
      echo "sync fail"
      echo "exit"
      report "sync fail; exit"
      exit
    fi
    if [ "${hour}" != "${prehour}" ]; then
      echo "reset takefail and syncfail"
      takefail=0
      syncfail=0
      prehour=${hour}
    fi
  done
}

main