This script is used to control a USB Traffic Light from Cleware. It runs in an endless loop and uses the Jenkins REST API to poll the specified Jenkins job tp parse the job status. It uses the job status to display different colors on the USB traffic light. - green: build stable - red: build failed / unstable - yellow: building job

controlTrafficLight.sh

#!/bin/sh

# This script is used to control a USB Traffic Light from Cleware. You can buy 
# the USB Traffic Light from this shop: http://www.cleware-shop.de
# 
# The script uses the REST API and can be used for newer versions of Jenkins that provide a REST API.
#
# Requirements:
# 
#   The Cleware USB Traffic Light comes with a control software that you can 
#   download from http://www.vanheusden.com/clewarecontrol/ 
#
#   This script can be run under Linux. You need to have "curl" installed, 
#   so the script can poll the REST API.
#
#   This script has been tested under Ubuntu and clewarecontrol 2.0
#
# @MarcelBirkner
# 

USER=user
PASSWORD=password
JENKINS_SERVER=http://<jenkins>:8080/job/
JOB_NAME=<jenkins-job-name>
DEVICE_NO=<USB device number>

# Methods for controlling the device (2=blue, 1=yellow, 0=red)
lightOn() {
  clewarecontrol -c 1 -b -d $DEVICE_NO -as $1 1 2>&1 
}
lightOff() {
  clewarecontrol -c 1 -b -d $DEVICE_NO -as $1 0 2>&1 
}
allOff() {
  lightOff 0;
  lightOff 1;
  lightOff 2;
}

while true; do 
  color=`curl -silent -u $USER:$PASSWORD $JENKINS_SERVER$JOB_NAME/api/json?pretty=true | grep color `
  state=`echo $color | sed 's/\"//g' | sed 's/,//g' | awk '{print $3}'` 
  echo $state;  
  case $state in 
    red)          echo "State: $state"; allOff; lightOn 0;;
    yellow)       echo "State: $state"; allOff; lightOn 1;;
    blue)         echo "State: $state"; allOff; lightOn 2;;
    red_anime)    echo "State: $state"; allOff; sleep 1; lightOn 0; sleep 1; lightOff 0; sleep 1; lightOn 0;;
    yellow_anime) echo "State: $state"; allOff; sleep 1; lightOn 1; sleep 1; lightOff 1; sleep 1; lightOn 1;;
    blue_anime)   echo "State: $state"; allOff; sleep 1; lightOn 2; sleep 1; lightOff 2; sleep 1; lightOn 2;;
    *)            echo "Nothing matched state: $state";;  
  esac;
  sleep 1;  
done;