module Instana::Instrumentation::NetHTTPInstrumentation

Public Instance Methods

request(*args, &block) click to toggle source
Calls superclass method
# File lib/instana/instrumentation/net-http.rb, line 9
def request(*args, &block)
  if !Instana.tracer.tracing? || Instana.tracer.current_span.exit_span? || !started?
    do_skip = true
    return super(*args, &block)
  end

  ::Instana.tracer.log_entry(:'net-http')

  # Send out the tracing context with the request
  request = args[0]

  # Set request headers; encode IDs as hexadecimal strings
  t_context = ::Instana.tracer.context
  request['X-Instana-L'] = t_context.level.to_s

  if t_context.active?
    request['X-Instana-T'] = t_context.trace_id_header
    request['X-Instana-S'] = t_context.span_id_header
  end

  request['Traceparent'] = t_context.trace_parent_header
  request['Tracestate'] = t_context.trace_state_header unless t_context.trace_state_header.empty?

  # Collect up KV info now in case any exception is raised
  kv_payload = { :http => {} }
  kv_payload[:http][:method] = request.method

  if request.uri
    uri_without_query = request.uri.dup.tap { |r| r.query = nil }
    kv_payload[:http][:url] = uri_without_query.to_s.gsub(/\?\z/, '')
    kv_payload[:http][:params] = ::Instana.secrets.remove_from_query(request.uri.query)
  else
    if use_ssl?
      kv_payload[:http][:url] = "https://#{@address}:#{@port}#{request.path}"
    else
      kv_payload[:http][:url] = "http://#{@address}:#{@port}#{request.path}"
    end
  end

  kv_payload[:http][:url] = ::Instana.secrets.remove_from_query(kv_payload[:http][:url]).gsub(/\?\z/, '')

  # The core call
  response = super(*args, &block)

  kv_payload[:http][:status] = response.code
  if response.code.to_i.between?(500, 511)
    # Because of the 5xx response, we flag this span as errored but
    # without a backtrace (no exception)
    ::Instana.tracer.log_error(nil)
  end

  response
rescue => e
  ::Instana.tracer.log_error(e)
  raise
ensure
  ::Instana.tracer.log_exit(:'net-http', kv_payload) unless do_skip
end