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require 'active_support/core_ext/time/conversions'
require 'active_support/core_ext/object/blank'
module Rails
module Rack
# Sets log tags, logs the request, calls the app, and flushes the logs.
class Logger < ActiveSupport::LogSubscriber
def initialize(app, taggers = nil)
@app, @taggers = app, taggers || []
end
def call(env)
request = ActionDispatch::Request.new(env)
if Rails.logger.respond_to?(:tagged)
Rails.logger.tagged(compute_tags(request)) { call_app(request, env) }
else
call_app(request, env)
end
end
protected
def call_app(request, env)
# Put some space between requests in development logs.
if Rails.env.development?
Rails.logger.info ''
Rails.logger.info ''
end
Rails.logger.info started_request_message(request)
@app.call(env)
ensure
ActiveSupport::LogSubscriber.flush_all!
end
# Started GET "/session/new" for 127.0.0.1 at 2012-09-26 14:51:42 -0700
def started_request_message(request)
'Started %s "%s" for %s at %s' % [
request.request_method,
request.filtered_path,
request.ip,
Time.now.to_default_s ]
end
def compute_tags(request)
@taggers.collect do |tag|
case tag
when Proc
tag.call(request)
when Symbol
request.send(tag)
else
tag
end
end
end
end
end
end
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