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| | module Rack
# 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.
class CommonLogger
# Common Log Format: http://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} %
FORMAT = %{%s - %s [%s] "%s %s%s %s" %d %s %0.4f\n}
def initialize(app, logger=nil)
@app = app
@logger = logger
end
def call(env)
began_at = Time.now
status, header, body = @app.call(env)
header = Utils::HeaderHash.new(header)
log(env, status, header, began_at)
[status, header, body]
end
private
def log(env, status, header, began_at)
now = Time.now
length = extract_content_length(header)
logger = @logger || env['rack.errors']
logger.write 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"],
status.to_s[0..3],
length,
now - began_at ]
end
def extract_content_length(headers)
value = headers['Content-Length'] or return '-'
value.to_s == '0' ? '-' : value
end
end
end
|