LOG_LEVEL_FATAL=0
LOG_LEVEL_ERROR=1
LOG_LEVEL_WARN=2
LOG_LEVEL_INFO=3
LOG_LEVEL_DEBUG=4
LOG_LEVEL_TRACE=5

LOG_LEVEL=${LOG_LEVEL_WARN}

function log_fatal { [ ${LOG_LEVEL} -ge ${LOG_LEVEL_FATAL} ] && echo "${@}" ; }

function log_error { [ ${LOG_LEVEL} -ge ${LOG_LEVEL_ERROR} ] && echo "${@}" ; }

function log_warn { [ ${LOG_LEVEL} -ge ${LOG_LEVEL_WARN} ] && echo "${@}" ; }

function log_info { [ ${LOG_LEVEL} -ge ${LOG_LEVEL_INFO} ] && echo "${@}" ; }

function log_debug { [ ${LOG_LEVEL} -ge ${LOG_LEVEL_DEBUG} ] && echo "${@}" ; }

function log_trace { [ ${LOG_LEVEL} -ge ${LOG_LEVEL_TRACE} ] && echo "${@}" ; }