Add http.request_id tag to Rack spans #335
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HTTP requests sometimes have a
X-Request-Idheader with a UUID or other identifier as a means of tracing requests in logs.This pull request adds the
http.request_idtag to Rack spans if Rack tracing is enabled (which is default for Rails applications.) Typically, if aX-Request-Idheader is set, it will use that value. If it's a Rails application, and noX-Request-Idheader is set, Rails automatically generates one, which will then be used as the value for this tag.Sample output: