31 lines
591 B
Ruby
31 lines
591 B
Ruby
module Rails
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module Rack
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class LogTailer
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def initialize(app, log = nil)
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@app = app
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path = Pathname.new(log || "#{File.expand_path(Rails.root)}/log/#{Rails.env}.log").cleanpath
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@cursor = ::File.size(path)
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@file = ::File.open(path, 'r')
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end
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def call(env)
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response = @app.call(env)
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tail!
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response
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end
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def tail!
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@file.seek @cursor
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if !@file.eof?
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contents = @file.read
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@cursor = @file.tell
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$stdout.print contents
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end
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end
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end
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end
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end
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