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# File railties/lib/rails/rack/log_tailer.rb, line 4 def initialize(app, log = nil) @app = app path = Pathname.new(log || "#{File.expand_path(Rails.root)}/log/#{Rails.env}.log").cleanpath @cursor = ::File.size(path) @file = ::File.open(path, 'r') end
# File railties/lib/rails/rack/log_tailer.rb, line 13 def call(env) response = @app.call(env) tail! response end
# File railties/lib/rails/rack/log_tailer.rb, line 19 def tail! @file.seek @cursor unless @file.eof? contents = @file.read @cursor = @file.tell $stdout.print contents end end