class Puma::CommonLogger
Rack::CommonLogger forwards every request to the given app
, and logs a line in the Apache common log format to the logger
.
If logger
is nil, CommonLogger
will fall back rack.errors
, which is an instance of Rack::NullLogger.
logger
can be any class, including the standard library Logger, and is expected to have either write
or +<<+ method, which accepts the CommonLogger::FORMAT. According to the SPEC, the error stream must also respond to puts
(which takes a single argument that responds to to_s
), and flush
(which is called without arguments in order to make the error appear for sure)
Constants
- CONTENT_LENGTH
- FORMAT
Common Log Format: httpd.apache.org/docs/1.3/logs.html#common
lilith.local - - [07/Aug/2006 23:58:02 -0400] "GET / HTTP/1.1" 500 - %{%s - %s [%s] "%s %s%s %s" %d %s\n} %
- HIJACK_FORMAT
- PATH_INFO
- QUERY_STRING
- REQUEST_METHOD
Public Class Methods
new(app, logger=nil)
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# File lib/puma/commonlogger.rb, line 33 def initialize(app, logger=nil) @app = app @logger = logger end
Public Instance Methods
call(env)
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# File lib/puma/commonlogger.rb, line 38 def call(env) began_at = Time.now status, header, body = @app.call(env) header = Util::HeaderHash.new(header) # If we've been hijacked, then output a special line if env['rack.hijack_io'] log_hijacking(env, 'HIJACK', header, began_at) else ary = env['rack.after_reply'] ary << lambda { log(env, status, header, began_at) } end [status, header, body] end
Private Instance Methods
extract_content_length(headers)
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# File lib/puma/commonlogger.rb, line 103 def extract_content_length(headers) value = headers[CONTENT_LENGTH] or return '-' value.to_s == '0' ? '-' : value end
log(env, status, header, began_at)
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# File lib/puma/commonlogger.rb, line 72 def log(env, status, header, began_at) now = Time.now length = extract_content_length(header) msg = FORMAT % [ env['HTTP_X_FORWARDED_FOR'] || env["REMOTE_ADDR"] || "-", env["REMOTE_USER"] || "-", now.strftime("%d/%b/%Y:%H:%M:%S %z"), env[REQUEST_METHOD], env[PATH_INFO], env[QUERY_STRING].empty? ? "" : "?#{env[QUERY_STRING]}", env["HTTP_VERSION"], status.to_s[0..3], length, now - began_at ] write(msg) end
log_hijacking(env, status, header, began_at)
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# File lib/puma/commonlogger.rb, line 56 def log_hijacking(env, status, header, began_at) now = Time.now msg = HIJACK_FORMAT % [ env['HTTP_X_FORWARDED_FOR'] || env["REMOTE_ADDR"] || "-", env["REMOTE_USER"] || "-", now.strftime("%d/%b/%Y %H:%M:%S"), env[REQUEST_METHOD], env[PATH_INFO], env[QUERY_STRING].empty? ? "" : "?#{env[QUERY_STRING]}", env["HTTP_VERSION"], now - began_at ] write(msg) end
write(msg)
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# File lib/puma/commonlogger.rb, line 91 def write(msg) logger = @logger || env['rack.errors'] # Standard library logger doesn't support write but it supports << which actually # calls to write on the log device without formatting if logger.respond_to?(:write) logger.write(msg) else logger << msg end end