scheduler_cron.sh

#!/bin/bash

# Exit when any command returns an error status
set -o errexit

# Generate an error if any variable doesn't exist
set -o nounset

# Location of the php binary
PHP_BIN=$(which php || true)
if [ -z "${PHP_BIN}" ]; then
    echo "Could not find a binary for php" 1>&2
    exit 1
fi

# Location of the md5sum binary
MD5SUM_BIN=$(which md5sum || true)
if [ -z "${MD5SUM_BIN}" ]; then
    echo "Could not find a binary for md5sum" 1>&2
    exit 1
fi

# Absolute path to Magento installation shell scripts
DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")/shell" && pwd)
if [[ -z "${DIR}" || ! -d "${DIR}" ]]; then
    echo "Could not resolve base shell directory" 1>&2
    exit 1
fi

# The scheduler.php script
SCHEDULER="scheduler.php"
if [[ ! -e "${DIR}/${SCHEDULER}" || ! -r "${DIR}/${SCHEDULER}" ]]; then
    echo "Could not find scheduler.php script" 1>&2
    exit 1
fi

# Defaults
MODE="default"
INCLUDE_GROUPS=""
EXCLUDE_GROUPS=""
INCLUDE_JOBS=""
EXCLUDE_JOBS=""

# Parse command line args (very simplistic)
while [ $# -gt 0 ]; do
    case "$1" in
        --mode)
            MODE=$2
            shift 2
        ;;
        --includeGroups)
            INCLUDE_GROUPS=$2
            shift 2
        ;;
        --excludeGroups)
            EXCLUDE_GROUPS=$2
            shift 2
        ;;
        --includeJobs)
            INCLUDE_JOBS=$2
            shift 2
        ;;
        --excludeJobs)
            EXCLUDE_JOBS=$2
            shift 2
        ;;
        --)
            shift
            break
        ;;
        *)
            echo "Invalid arguments." >&2
            exit 1
        ;;
    esac
done

# Verify we have a MODE parameter
if [ -z "${MODE}" ]; then
    echo "Cron run mode MUST be defined." 1>&2
    exit 1
fi

# Unique identifier for this cron job run
IDENTIFIER=$(echo -n "${MODE}|${INCLUDE_GROUPS}|${EXCLUDE_GROUPS}|${INCLUDE_JOBS}|${EXCLUDE_JOBS}" | "${MD5SUM_BIN}" - | cut -f1 -d' ')

# Lock process to one run per set of options (This REQUIRES 'set -e' or 'set -o errexit')
# This is to prevent multiple processes for the same cron parameters (And the only reason we don't call PHP directly)
LOCK="/tmp/magento.aoe_scheduler.${IDENTIFIER}.lock"
mkdir "${LOCK}" >/dev/null 2>&1
# TODO: add pid writing and check
trap 'rmdir "${LOCK}"; exit $?' INT TERM EXIT

# Needed because PHP is braindead and resolves symlinks before setting __FILE__
cd "${DIR}"

# Build the options
OPTIONS=""
if [ -n "${INCLUDE_GROUPS}" ]; then
    OPTIONS="${OPTIONS} --includeGroups ${INCLUDE_GROUPS}"
fi
if [ -n "${EXCLUDE_GROUPS}" ]; then
    OPTIONS="${OPTIONS} --excludeGroups ${EXCLUDE_GROUPS}"
fi
if [ -n "${INCLUDE_JOBS}" ]; then
    OPTIONS="${OPTIONS} --includeJobs ${INCLUDE_JOBS}"
fi
if [ -n "${EXCLUDE_JOBS}" ]; then
    OPTIONS="${OPTIONS} --excludeJobs ${EXCLUDE_JOBS}"
fi

# Run the job in the foreground
"${PHP_BIN}" "${SCHEDULER}" --action cron --mode ${MODE} ${OPTIONS}