Sensu Check Status to Metric Mutator

check_status_as_metric.sh

#!/bin/sh
#
#  check_status_as_metric.sh
#  optionally set measurement, field
#  Ex:
#   check_status_as_metric.sh measurement="${entity_name}" field="${check_name}.status"
#


event=$(cat /dev/stdin)
check_status=$(echo $event | jq .check.status)
check_name=$(echo $event | jq .check.metadata.name |  tr -d '"')
check_proxy_entity_name=$(echo $event | jq .check.proxy_entity_name | tr -d '"')
check_timestamp=$(echo $event | jq .check.issued |  tr -d '"')
entity_name=$(echo $event | jq .entity.metadata.name | tr -d '"')
host_name=$(echo $event | jq .entity.system.hostname | tr -d '"')
CONFIG=( "$@" )

# Update Envvars using cmdline args
for line in "${CONFIG[@]}"; do
  eval "$line"
done

[ -z ${measurement} ] && measurement="${host_name}"
[ -z ${field} ] && field="${check_name}.status"

point="[{ \"name\" : \"${measurement}.${field}\", \"timestamp\" : ${check_timestamp}, \"value\" : $check_status , \"tags\" : null }]" 
echo $event | jq ".metrics.points += $point"