require 'fileutils'
module NewRelic
module Rack
class MetricApp
def initialize(options)
if options[:install]
FileUtils.copy File.join(File.dirname(__FILE__), "newrelic.yml"), "."
NewRelic::Agent.logger.info "==============================="
NewRelic::Agent.logger.info "A newrelic.yml template was copied to #{File.expand_path('.')}."
NewRelic::Agent.logger.info "Please add a license key to the file and restart #{$0}"
exit 0
end
options[:app_name] ||= 'EPM Monitor'
options[:disable_samplers] = true
NewRelic::Agent.manual_start options
unless NewRelic::Control.instance.license_key
NewRelic::Agent.logger.error "Please add a valid license key to newrelic.yml."
exit 1
end
end
def call(env)
request = ::Rack::Request.new env
segments = request.url.gsub(/^.*?\/metrics\//, '').split("?")[0].split("/")
metric = "Custom/" + segments.join("/")
raise "Expected value parameter!" unless request['value']
data = request['value'].to_f
stats = NewRelic::Agent.get_stats(metric, false)
stats.record_data_point data
response = ::Rack::Response.new "#{metric}=#{data}"
response.finish
end
end
class Status
def call(env)
request = ::Rack::Request.new env
data_url = "http://#{env['HTTP_HOST']}/metrics/path?value=nnn"
body = StringIO.new
body.puts ""
body.puts "New Relic Actively Monitoring #{NewRelic::Control.instance.app_names.join(' and ')}
"
body.puts "To submit a metric value, use #{data_url}
"
body.puts "Request Details
"
body.puts ""
body.puts "- ip
- #{request.ip}"
body.puts "
- host
- #{request.host}"
body.puts "
- path
- #{request.url}"
body.puts "
- query
- #{request.query_string}"
body.puts "
- params
- #{request.params.inspect}"
body.puts "
"
body.puts "Complete ENV
"
body.puts ""
body.puts env.to_a.map{|k,v| "- #{k} = #{v}
" }.join("\n")
body.puts "
"
response = ::Rack::Response.new body.string
response.finish
end
end
end
end