wait-docker-selenium.sh

#!/usr/bin/env bash

# set -e: exit asap if a command exits with a non-zero status
set -e

echoerr() { printf "%s\n" "$*" >&2; }

# print error and exit
die () {
  echoerr "ERROR: $1"
  # if $2 is defined AND NOT EMPTY, use $2; otherwise, set to "3"
  errnum=${2-3}
  exit $errnum
}

# Required params
[ -z "$1" ] && die "Need 1st argument: CONTAINER_ID"
CONTAINER_ID=${1}

# if $2 is defined AND NOT EMPTY, use $2; otherwise, set to "7s"
WAIT_TIMEOUT=${2-7s}

# default $TAIL_LOG_LINES when not provided
TAIL_LOG_LINES=${TAIL_LOG_LINES-10}

# Full directory name of the script no matter where it is being called from
DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
LOOP_SCRIPT_PATH="${DIR}/loop-wait-docker.sh"

if [ ! -f "${LOOP_SCRIPT_PATH}" ]; then
  die "Need '${LOOP_SCRIPT_PATH}' to exist!"
fi

# Avoid waiting forever using the `timeout` command
if timeout --foreground ${WAIT_TIMEOUT} \
     ${LOOP_SCRIPT_PATH} ${CONTAINER_ID}; then
  echo ""
  docker exec ${CONTAINER_ID} \
    grep 'password' /var/log/cont/vnc-stdout.log || true
  docker exec ${CONTAINER_ID} \
    grep 'IP:' /var/log/cont/xterm-stdout.log || die "Failed to grep IP:"
else
  docker exec ${CONTAINER_ID} \
    bash -c 'tail --lines=${TAIL_LOG_LINES} /var/log/cont/*' || true
  echo "" && echo "" && echo "==> errors <=="
  docker exec ${CONTAINER_ID} \
    bash -c 'errors' || true

  die "
   Your docker-selenium didn't start properly.
   Start it next time with -e DISABLE_ROLLBACK=true
  "
fi