Rebind all applications for a Cloud Foundry service

rebind-apps.rb

#!/usr/bin/ruby
require 'rubygems'
require 'json'
require 'pp'
# for the #sh helper
require "rake"
require "rake/file_utils"
include FileUtils

## PREREQ: Using CF cli tools, make sure you've logged in as a user (admin) who can see all orgs/spaces

service_name ="postgresql93"

# Get the service plan url for specified service
service_plan_url = `cf curl "/v2/services?results-per-page=100" | jq '.resources[].entity | select(.label=="#{service_name}")' | jq -r .service_plans_url`.strip
puts "Found service plan URL: #{service_plan_url}"

# Get the Service Instances URL reference for the Service Plan
service_instances_url = `cf curl "#{service_plan_url}?results-per-page=100" | jq -r ".resources[].entity.service_instances_url"`.strip
puts "Found service plan URL: #{service_instances_url}"

# Get a list of applications that are using the service plan based on service_instances_url
# Create a new JSON Array with App Name, and Space URL
app_info =`cf curl "#{service_instances_url}?results-per-page=100" | jq '[.resources[].entity]' | jq '[.[] | {svc_name: .name, details: {space_url: .space_url, svc_bindings_url: .service_bindings_url}}]' | jq .`.strip

# Parse JSON response so we can get Space Name and Org Name
app_info_json = JSON.parse(app_info)
app_info_json.each do |x|
  # Get the Space URL and set it for use as environment variable
	space_url = x['details']['space_url']

  # Get Space Name and Org URL
	space_deets = `cf curl #{space_url} | jq '[. | {details: {space_name: .entity.name, org_url: .entity.organization_url}}]' | jq .`.strip
	space_deets_json = JSON.parse(space_deets)

  # Update JSON object with the Space Name, Get Org name using Org URL
	space_deets_json.each do |y|
    # Get Org Name using Org URL
		org_url = y['details']['org_url']
		org_name = `cf curl #{org_url} | jq -r .entity.name`.strip

    # Update JSON object with Org Name and Space Name
		x['details']['org_name'] = org_name.chomp
    x['details']['space_name'] = "#{y['details']['space_name']}"
	end

	# We also need the App name the service is bound to. If app name is null, service instance is not bound
	# There may be more than one app bound to the service instance
  # Get the App URL using the Service Bindings URL, convert to an array.
  app_url = `cf curl #{x['details']['svc_bindings_url']} | jq '[.resources[] | .entity.app_url]'`.strip
	app_url_array = eval app_url
	unless app_url_array.size == 0
		app_name_array = Array.new
		app_url_array.each do |z|
			app_name = `cf curl #{z} | jq -r .entity.name`
			unless app_name == "null"
				puts "Rebinding #{x['details']['org_name']}/#{x['details']['space_name']} #{app_name.chomp}->#{x['svc_name']}"
				sh "cf target -o #{x['details']['org_name']} -s #{x['details']['space_name']}"
				sh "cf us #{app_name.chomp} #{x['svc_name']}"
				sh "cf bs #{app_name.chomp} #{x['svc_name']}"
				sh "cf restage #{app_name.chomp}"
				puts
			end
		end
	end
end