check for jenkins plugin updates an publish the result via slack

slack-notify-plugin-updates.sh

#!/bin/bash

# #############
# CONFIGURATION
webhook_url="xxx"
channel="Jenkins"
pretext="**Jenkins Plugin Check**"
icon_url="https://www.jenkins.io/images/logos/general/256.png"

export JENKINS_USER_ID=xxx
export JENKINS_API_TOKEN=xxx

export jenkins_url=http://localhost:8080

# CONFIGURATION
###############

if [ ! -f jenkins-cli.jar ]; then
    echo "need to download jenkins cli first..."
    wget $jenkins_url/jnlpJars/jenkins-cli.jar
fi

color=danger

if [ $(whoami) != "root" ]
then
    text="Could not check server status. Need to run as root."
else

    # list plugins / filter updates / transform to markdown
    updates=`java -jar jenkins-cli.jar -s $jenkins_url list-plugins 2>/dev/null | grep -E '\([0-9].[0-9].*\)' | sed 's/ \+ /|/g' | cut -d '|' -f1,3 | sed 's/.*/|&|/' | awk '{printf "%s\\\\n", $0}'`

    if [[ $updates == "" ]]
    then
        text="Jenkins plugins are up-to-date"
        color=#00FF00
    else
        text="Jenkins plugins need to be upgraded! \n\n|plugin|version(update)|\n|:----|----:|\n$updates"
        color=danger
    fi
fi

escapedText=$(echo $text | sed 's/"/\"/g' | sed "s/'/\'/g" )
escapedPretext=$(echo $pretext | sed 's/"/\"/g' | sed "s/'/\'/g" )

json="{\"attachments\":[{\"color\":\"$color\", \"pretext\":\"$escapedPretext\" , \"text\": \"$escapedText\"}], \"icon_url\": \"$icon_url\"}"

echo curl -s -d "payload=$json" "$webhook_url"
curl -s -d "payload=$json" "$webhook_url"