Update ~/.ssh/config IP addresses for preprod and production

update_ip.sh

#!/bin/bash
# production|preprod
command -v jq >/dev/null 2>&1 || { echo >&2 "I require jq but it's not installed. Try 'brew install jq' Aborting."; exit 1; }
command -v curl >/dev/null 2>&1 || { echo >&2 "I require curl but it's not installed. Try 'brew install curl' Aborting."; exit 1; }
command -v perl >/dev/null 2>&1 || { echo >&2 "I require perl but it's not installed. Try 'brew install perl' Aborting."; exit 1; }
command -v tr >/dev/null 2>&1 || { echo >&2 "I require tr but it's not installed.' Aborting."; exit 1; }
case $1 in 
  production|preprod)
    platform=$1
    ;;
  *)
    echo 'Invalid parameter. Must be production or preprod'
    exit 1;
    ;;
esac
data=$(curl --request GET \
  --user $(whoami) \
  --cookie-jar ~/.cookiejar \
  https://deployment.gocd.routematch.com/go/api/pipelines/provision-$platform/history)
latestPipeline=$(jq '.pipelines[0].counter' <<< $data )

# Must remove the double quotes from the next value
latestStage=$(jq '.pipelines[0].stages[0].counter' <<< $data | tr -d '"' )

# Fetch the log of the latest run. It has the new IP address in it
# extract just the IP address from the log
newip=$(
curl --request GET \
  --cookie ~/.cookiejar \
  --silent \
  --no-buffer \
  https://deployment.gocd.routematch.com/go/files/provision-$platform/$latestPipeline/deploy/$latestStage/deploy/cruise-output/console.log \
  -H 'Accept: application/vnd.go.cd.v1+json' | \
  perl -lne 'm/changed: \[(\d+\.\d+\.\d+\.\d+)\] \=\> \(item\=rabbitmq-data\)/ && print ($1) && exit' )

echo New $platform IP: $newip

# Edit ~/.ssh/config to replace IP address for the named platform (saving a backup, of course)
perl -i.bak -0spe 'BEGIN {$platform=shift; $ip=shift} s/(Host .*?${platform}.*?HostName )(\d{1,3}\.){3}\d{1,3}/$1${ip}/migs' $platform $newip ~/.ssh/config