Copy a Librato instrument

copy_librato_instrument.rb

#!/usr/bin/env ruby

require 'faraday'
require 'faraday_middleware'
require 'json'
require 'pry'

class LibratoApi
  ENDPOINT = 'https://metrics-api.librato.com/v1'

  attr_accessor :username

  def initialize(username, api_key)
    @username = username

    @conn = Faraday.new(ENDPOINT) do |f|
      f.request :json
      f.response :json
      f.adapter Faraday.default_adapter
      f.basic_auth username, api_key
    end
  end

  def conn
    @conn
  end

  def get_entity(entity_path, entity_id)
    resp = conn.get("#{entity_path}/#{entity_id}")
    resp.status == 200 ? resp.body : (raise resp.inspect)
  end

  def get_instrument(instrument_id)
    get_entity('instruments', instrument_id)
  end

  # Clean ids out of the instrument payload so we can post to another account
  # Not even sure this is necessary - the API may just take it and discard the ids?
  def get_instrument_dupe(instrument_id)
    get_instrument(instrument_id).tap do |inst|
      inst.delete('id')
      inst['streams'].each {|s| s.delete('id')}
    end
  end

  def create_instrument(payload)
    conn.post do |req|
      req.url 'instruments'
      req.body = payload.to_json
    end
  end

  def copy_instrument(instrument_id, new_name=nil)
    payload = get_instrument_dupe(instrument_id)
    if new_name
      payload['name'] = new_name
    else
      payload['name'] += ' (copy)'
    end
    resp = create_instrument(payload)
    resp.body
  end

end


# Script starts here
username, api_key = ENV['LIBRATO_USER'], ENV['LIBRATO_TOKEN']
raise "set ENV['LIBRATO_USER'] and ENV['LIBRATO_TOKEN']" unless username && api_key

api = LibratoApi.new(username, api_key)
# Either pass as an argument, or supply here
instrument_id = ARGV[0] || 1234567
new_name = ARGV[1] || nil # set 'my new instrument name' here

# Create the new instrument
new_instrument = api.copy_instrument(instrument_id, new_name)

# Output link
puts "https://metrics.librato.com/instruments/#{new_instrument['id']}"

# Usage
# ./copy_librato_instrument.rb 1234567 # Create duplicate instrument with ' (copy)' appended to the name
# ./copy_librato_instrument.rb 1234567 'new instrument name'
# ./copy_librato_instrument.rb 1234567 | pbcopy # Grab the link