[英]How to add Faraday request body into Datadog tracing in a Rails app
I'm trying to configure Faraday tracing in aRails application using Datadog.我正在尝试使用 Datadog 在 aRails 应用程序中配置法拉第跟踪。
I've set up the Faraday -> Datadog connection:我已经建立了 Faraday -> Datadog 连接:
require 'faraday'
require 'ddtrace'
Datadog.configure do |c|
c.use :faraday
end
Faraday.post("http://httpstat.us/200", {foo: 1, bar: 2}.to_json)
Faraday.get("http://httpstat.us/201?foo=1&bar=2")
It works well, the requests are being logged to Datadog.它运行良好,请求被记录到 Datadog。
But those logs do not contain any request parameters, nevertheless GET or POST.但是这些日志不包含任何请求参数,但 GET 或 POST。
Any adviсe on how to get the request params/body logged to Datadog?关于如何将请求参数/正文记录到 Datadog 的任何建议?
So, by default the only things sent to Datadog from Faraday as part of the span in terms of the HTTP request are are:因此,默认情况下,就 HTTP 请求而言,作为跨度的一部分,从 Faraday 发送到 Datadog 的唯一内容是:
span.set_tag(Datadog::Ext::HTTP::URL, env[:url].path)
span.set_tag(Datadog::Ext::HTTP::METHOD, env[:method].to_s.upcase)
span.set_tag(Datadog::Ext::NET::TARGET_HOST, env[:url].host)
span.set_tag(Datadog::Ext::NET::TARGET_PORT, env[:url].port)
Source: https://github.com/DataDog/dd-trace-rb/blob/e391d2eb64d3c6151a4bdd2710c6a8c7c1d57457/lib/ddtrace/contrib/faraday/middleware.rb#L54资料来源: https://github.com/DataDog/dd-trace-rb/blob/e391d2eb64d3c6151a4bdd2710c6a8c7c1d57457/lib/ddtrace/contrib/faraday/middleware.rb#L54
The body of the request is not set in the http part of the span by default, only the URL, HTTP method, host and port are.请求的body默认没有设置在span的http部分,只有URL,HTTP方法,host和port是。
However, with manual instrumentation you can add anything you want to the span, so you could write an extension or monkey-patch to the Faraday middleware to add the body and parameters to the span:但是,通过手动检测,您可以将任何您想要的内容添加到跨度,因此您可以为法拉第中间件编写扩展或猴子补丁,以将主体和参数添加到跨度:
span.set_tag("http.body", env[:body])
span.set_tag("http.params", env[:params])
An example monkey patch:猴子补丁示例:
require 'faraday'
require 'ddtrace'
require 'ddtrace/contrib/faraday/middleware'
module FaradayExtension
private
def annotate!(span, env, options)
# monkey patch to add body to span
span.set_tag("http.body", env[:body]) unless env[:body].to_s.strip.empty?
span.set_tag("http.query", env[:url].query) if env[:url].query
super
end
end
Datadog::Contrib::Faraday::Middleware.prepend(FaradayExtension)
Datadog.configure do |c|
c.use :faraday
end
Faraday.post("http://httpstat.us/200", {foo: 1, bar: 2}.to_json)
Faraday.get("http://httpstat.us/201?foo=1&bar=2")
This worked for me in my testing:这在我的测试中对我有用:
NB: I am a Datadog employee, but not on the engineering team, just wanted to be transparent!注意:我是 Datadog 的员工,但不在工程团队,只是想保持透明!
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