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106 lines
3.2 KiB
Ruby
106 lines
3.2 KiB
Ruby
module Puma
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# Rack::CommonLogger forwards every request to the given +app+, and
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# logs a line in the
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# {Apache common log format}[http://httpd.apache.org/docs/1.3/logs.html#common]
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# to the +logger+.
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#
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# If +logger+ is nil, CommonLogger will fall back +rack.errors+, which is
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# an instance of Rack::NullLogger.
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#
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# +logger+ can be any class, including the standard library Logger, and is
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# expected to have either +write+ or +<<+ method, which accepts the CommonLogger::FORMAT.
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# According to the SPEC, the error stream must also respond to +puts+
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# (which takes a single argument that responds to +to_s+), and +flush+
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# (which is called without arguments in order to make the error appear for
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# sure)
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class CommonLogger
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# Common Log Format: http://httpd.apache.org/docs/1.3/logs.html#common
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#
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# lilith.local - - [07/Aug/2006 23:58:02 -0400] "GET / HTTP/1.1" 500 -
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#
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# %{%s - %s [%s] "%s %s%s %s" %d %s\n} %
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FORMAT = %{%s - %s [%s] "%s %s%s %s" %d %s %0.4f\n}
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HIJACK_FORMAT = %{%s - %s [%s] "%s %s%s %s" HIJACKED -1 %0.4f\n}
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CONTENT_LENGTH = 'Content-Length'.freeze
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PATH_INFO = 'PATH_INFO'.freeze
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QUERY_STRING = 'QUERY_STRING'.freeze
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REQUEST_METHOD = 'REQUEST_METHOD'.freeze
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def initialize(app, logger=nil)
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@app = app
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@logger = logger
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end
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def call(env)
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began_at = Time.now
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status, header, body = @app.call(env)
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header = Util::HeaderHash.new(header)
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# If we've been hijacked, then output a special line
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if env['rack.hijack_io']
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log_hijacking(env, 'HIJACK', header, began_at)
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else
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ary = env['rack.after_reply']
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ary << lambda { log(env, status, header, began_at) }
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end
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[status, header, body]
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end
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private
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def log_hijacking(env, status, header, began_at)
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now = Time.now
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msg = HIJACK_FORMAT % [
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env['HTTP_X_FORWARDED_FOR'] || env["REMOTE_ADDR"] || "-",
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env["REMOTE_USER"] || "-",
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now.strftime("%d/%b/%Y %H:%M:%S"),
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env[REQUEST_METHOD],
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env[PATH_INFO],
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env[QUERY_STRING].empty? ? "" : "?#{env[QUERY_STRING]}",
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env["HTTP_VERSION"],
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now - began_at ]
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write(msg)
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end
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def log(env, status, header, began_at)
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now = Time.now
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length = extract_content_length(header)
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msg = FORMAT % [
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env['HTTP_X_FORWARDED_FOR'] || env["REMOTE_ADDR"] || "-",
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env["REMOTE_USER"] || "-",
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now.strftime("%d/%b/%Y:%H:%M:%S %z"),
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env[REQUEST_METHOD],
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env[PATH_INFO],
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env[QUERY_STRING].empty? ? "" : "?#{env[QUERY_STRING]}",
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env["HTTP_VERSION"],
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status.to_s[0..3],
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length,
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now - began_at ]
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write(msg)
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end
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def write(msg)
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logger = @logger || env['rack.errors']
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# Standard library logger doesn't support write but it supports << which actually
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# calls to write on the log device without formatting
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if logger.respond_to?(:write)
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logger.write(msg)
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else
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logger << msg
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end
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end
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def extract_content_length(headers)
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value = headers[CONTENT_LENGTH] or return '-'
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value.to_s == '0' ? '-' : value
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end
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end
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end
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