31.4.2. ステップバイステップのガイド

このお客様が必要としたカスタム解析機能を得るために実施したステップを以下に示します。

def api_call_applications_list(domain, provider_key)
  done = false
  res = Array.new
  page = 1

      while !done
    url = "https://#{domain}/admin/api/applications.xml?provider_key=#{provider_key}&page=#{page}&per_page=100"
    page += 1
    response = RestClient.get url
    raise Exception.new("Wrong response code (#{response.code}) in request #{url}") if response.code!=200
    document = Nokogiri::XML(response.to_str)    done = document.xpath("applications/@current_page").text == document.xpath("applications/@total_pages").text
    document.xpath("//application").each do |item|
      app = Hash.new
      app["created_at"] = DateTime.parse(item.xpath("created_at").text)
      app["plan_name"] = item.xpath("plan/name").text
      app["service_id"] = item.xpath("plan/service_id").text
      app["account_id"] = item.xpath("user_account_id").text
      app["id"] = item.xpath("id").text
      res << app
    end
  end
  return res
end

def filter_applications(domain, provider_key, plan_name, num_of_days)
  res = api_call_applications_list(domain, provider_key)
  res.each do |item|
    res.delete(item) if item["plan_name"] != plan_name
    res.delete(item) if item["created_at"] > (DateTime.now - num_of_days)
  end
  return res
end

def api_call_application_usage(domain, provider_key, application_id, metric, from, to, granularity)
  url = "https://#{domain}/stats/applications/#{application_id}/usage.xml?provider_key=#{provider_key}&metric_name=#{metric}&since=#{from}&until=#{to}&granularity=#{granularity}"
  response = RestClient.get url
  raise Exception.new("Wrong response code (#{response.code}) in request #{url}") if response.code!=200
  document = Nokogiri::XML(response.to_str)
  return document.xpath("//usage/data/values").text.split(",")
end

def api_call_account_read(domain, provider_key, account_id)
  url = "https://#{domain}/admin/api/accounts/#{account_id}.xml?provider_key=#{provider_key}"
  response = RestClient.get url
  raise Exception.new("Wrong response code (#{response.code}) in request #{url}") if response.code!=200
  document = Nokogiri::XML(response.to_str)
  account = Hash.new
  account["email"] = document.xpath("//users/user/email").text
  account["name"] = document.xpath("//users/user/first_name").text + " " + document.xpath("//users/user/last_name").text
  return account
end

そして、それはほとんどそれです。これで、すべてをまとめるだけで (full script as a gist を取得可能)、完了です。このスクリプトで、3scale に組み込まれた解析機能ではまだ利用できなかった情報を取得することができます。