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Rack::CommonLogger

Rack::CommonLogger forwards every request to an app given, and logs a line in the Apache common log format to the logger, or rack.errors by default.

Constants

FORMAT

Common Log Format: httpd.apache.org/docs/1.3/logs.html#common lilith.local - - [07/Aug/2006 23:58:02] “GET / HTTP/1.1“ 500 -

            %{%s - %s [%s] "%s %s%s %s" %d %s\n} %

Public Class Methods

new(app, logger=nil) click to toggle source
    # File lib/rack/commonlogger.rb, line 13
13:     def initialize(app, logger=nil)
14:       @app = app
15:       @logger = logger
16:     end

Public Instance Methods

call(env) click to toggle source
    # File lib/rack/commonlogger.rb, line 18
18:     def call(env)
19:       began_at = Time.now
20:       status, header, body = @app.call(env)
21:       header = Utils::HeaderHash.new(header)
22:       body = BodyProxy.new(body) { log(env, status, header, began_at) }
23:       [status, header, body]
24:     end

Private Instance Methods

extract_content_length(headers) click to toggle source
    # File lib/rack/commonlogger.rb, line 46
46:     def extract_content_length(headers)
47:       value = headers['Content-Length'] or return '-'
48:       value.to_s == '0' ? '-' : value
49:     end
log(env, status, header, began_at) click to toggle source
    # File lib/rack/commonlogger.rb, line 28
28:     def log(env, status, header, began_at)
29:       now = Time.now
30:       length = extract_content_length(header)
31: 
32:       logger = @logger || env['rack.errors']
33:       logger.write FORMAT % [
34:         env['HTTP_X_FORWARDED_FOR'] || env["REMOTE_ADDR"] || "-",
35:         env["REMOTE_USER"] || "-",
36:         now.strftime("%d/%b/%Y %H:%M:%S"),
37:         env["REQUEST_METHOD"],
38:         env["PATH_INFO"],
39:         env["QUERY_STRING"].empty? ? "" : "?"+env["QUERY_STRING"],
40:         env["HTTP_VERSION"],
41:         status.to_s[0..3],
42:         length,
43:         now - began_at ]
44:     end

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