79 lines
2.3 KiB
Ruby
79 lines
2.3 KiB
Ruby
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require "active_support/core_ext/time/conversions"
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require "active_support/core_ext/object/blank"
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require "active_support/log_subscriber"
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require "action_dispatch/http/request"
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require "rack/body_proxy"
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module Rails
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module Rack
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# Sets log tags, logs the request, calls the app, and flushes the logs.
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#
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# Log tags (+taggers+) can be an Array containing: methods that the +request+
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# object responds to, objects that respond to +to_s+ or Proc objects that accept
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# an instance of the +request+ object.
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class Logger < ActiveSupport::LogSubscriber
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def initialize(app, taggers = nil)
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@app = app
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@taggers = taggers || []
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end
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def call(env)
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request = ActionDispatch::Request.new(env)
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if logger.respond_to?(:tagged)
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logger.tagged(compute_tags(request)) { call_app(request, env) }
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else
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call_app(request, env)
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end
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end
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private
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def call_app(request, env) # :doc:
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instrumenter = ActiveSupport::Notifications.instrumenter
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instrumenter.start "request.action_dispatch", request: request
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logger.info { started_request_message(request) }
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resp = @app.call(env)
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resp[2] = ::Rack::BodyProxy.new(resp[2]) { finish(request) }
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resp
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rescue Exception
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finish(request)
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raise
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ensure
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ActiveSupport::LogSubscriber.flush_all!
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end
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# Started GET "/session/new" for 127.0.0.1 at 2012-09-26 14:51:42 -0700
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def started_request_message(request) # :doc:
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'Started %s "%s" for %s at %s' % [
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request.request_method,
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request.filtered_path,
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request.ip,
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Time.now.to_default_s ]
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end
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def compute_tags(request) # :doc:
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@taggers.collect do |tag|
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case tag
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when Proc
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tag.call(request)
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when Symbol
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request.send(tag)
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else
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tag
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end
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end
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end
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def finish(request)
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instrumenter = ActiveSupport::Notifications.instrumenter
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instrumenter.finish "request.action_dispatch", request: request
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end
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def logger
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Rails.logger
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end
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end
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end
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end
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