Class: Datadog::Contrib::Faraday::Middleware

Inherits:
Faraday::Middleware
  • Object
show all
Defined in:
lib/ddtrace/contrib/faraday/middleware.rb

Overview

Middleware implements a faraday-middleware for ddtrace instrumentation

Constant Summary collapse

DEFAULT_ERROR_HANDLER = 
lambda do |env|
  Ext::HTTP::ERROR_RANGE.cover?(env[:status])
end
DEFAULT_OPTIONS = 
{
  distributed_tracing: false,
  split_by_domain: false,
  error_handler: DEFAULT_ERROR_HANDLER
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Middleware

Returns a new instance of Middleware.



21
22
23
24
 
# File 'lib/ddtrace/contrib/faraday/middleware.rb', line 21

def initialize(app, options = {})
  super(app)
  @options = DEFAULT_OPTIONS.merge(options)
end

Instance Method Details

#call(env) ⇒ Object 



26
27
28
29
30
31
32
 
# File 'lib/ddtrace/contrib/faraday/middleware.rb', line 26

def call(env)
  dd_pin.tracer.trace(SERVICE) do |span|
    annotate!(span, env)
    propagate!(span, env) if options[:distributed_tracing]
    app.call(env).on_complete { |resp| handle_response(span, resp) }
  end
end