plack::middleware::accesslog(3pm) [debian man page]

Plack::Middleware::AccessLog(3pm)			User Contributed Perl Documentation			 Plack::Middleware::AccessLog(3pm)

NAME

       Plack::Middleware::AccessLog - Logs requests like Apache's log format

SYNOPSIS

	 # in app.psgi
	 use Plack::Builder;

	 builder {
	     enable "Plack::Middleware::AccessLog", format => "combined";
	     $app;
	 };

DESCRIPTION

       Plack::Middleware::AccessLog forwards the request to the given app and logs request and response details to the logger callback. The format
       can be specified using Apache-like format strings (or "combined" or "common" for the default formats). If none is specified "combined" is
       used.

       This middleware uses calculable content-length by checking body type, and can not log the time taken to serve requests. It also logs the
       request before the response is actually sent to the client. Use Plack::Middleware::AccessLog::Timed if you want to log details after the
       response is transmitted (more like a real web server) to the client.

       This middleware is enabled by default when you run plackup as a default "development" environment.

CONFIGURATION

       format
	     enable "Plack::Middleware::AccessLog",
		 format => '%h %l %u %t "%r" %>s %b "%{Referer}i" "%{User-agent}i"';

	   Takes a format string (or a preset template "combined" or "custom") to specify the log format. This middleware implements a subset of
	   Apache's LogFormat templates <http://httpd.apache.org/docs/2.0/mod/mod_log_config.html>:

	      %%    a percent sign
	      %h    REMOTE_ADDR from the PSGI environment, or -
	      %l    remote logname not implemented (currently always -)
	      %u    REMOTE_USER from the PSGI environment, or -
	      %t    [local timestamp, in default format]
	      %r    REQUEST_METHOD, REQUEST_URI and SERVER_PROTOCOL from the PSGI environment
	      %s    the HTTP status code of the response
	      %b    content length
	      %T    custom field for handling times in subclasses
	      %D    custom field for handling sub-second times in subclasses
	      %v    SERVER_NAME from the PSGI environment, or -
	      %V    HTTP_HOST or SERVER_NAME from the PSGI environment, or -

	   Some of these format fields are only supported by middleware that subclasses "AccessLog".

	   In addition, custom values can be referenced, using "%{name}", with one of the mandatory modifier flags "i", "o" or "t":

	      %{variable-name}i    HTTP_VARIABLE_NAME value from the PSGI environment
	      %{header-name}o	   header-name header
	      %{time-format]t	   localtime in the specified strftime format

       logger
	     my $logger = Log::Dispatch->new(...);
	     enable "Plack::Middleware::AccessLog",
		 logger => sub { $logger->log(level => 'debug', message => @_) };

	   Sets a callback to print log message to. It prints to "psgi.errors" output stream by default.

SEE ALSO

       <http://httpd.apache.org/docs/2.2/mod/mod_log_config.html> Rack::CustomLogger

perl v5.14.2							    2012-04-14					 Plack::Middleware::AccessLog(3pm)

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Plack::Middleware::Conditional(3pm)			User Contributed Perl Documentation		       Plack::Middleware::Conditional(3pm)

NAME

       Plack::Middleware::Conditional - Conditional wrapper for Plack middleware

SYNOPSIS

	 use Plack::Builder;

	 builder {
	     enable_if { $_[0]->{REMOTE_ADDR} eq '127.0.0.1' } 'StackTrace', force => 1;
	     $app;
	 };

	 # or using the OO interface:
	 $app = Plack::Middleware::Conditional->wrap(
	     $app,
	     condition	=> sub { $_[0]->{REMOTE_ADDR} eq '127.0.0.1' },
	     builder => sub { Plack::Middleware::StackTrace->wrap($_[0], force => 1) },
	 );

DESCRIPTION

       Plack::Middleware::Conditional is a piece of meta-middleware, to run a specific middleware component under runtime conditions. The goal of
       this middleware is to avoid baking runtime configuration options in individual middleware components, and rather share them as another
       middleware component.

EXAMPLES

       Note that some of the middleware component names are just made up for the explanation and might not exist.

	 # Minify JavaScript if the browser is Firefox
	 enable_if { $_[0]->{HTTP_USER_AGENT} =~ /Firefox/ } 'JavaScriptMinifier';

	 # Enable Stacktrace when being accessed from the local network
	 enable_if { $_[0]->{REMOTE_ADDR} =~ /^10.0.1.*/ } 'StackTrace';

	 # Work with other conditional setter middleware:
	 # Transcode Jpeg on the fly for mobile clients
	 builder {
	     enable 'MobileDetector';
	     enable_if { $_[0]->{'plack.mobile_detected'} }
	       'TranscodeJpeg', max_size => 30_000;
	     $app;
	 };

       Note that in the last example MobileDetector should come first because the conditional check runs in pre-run conditions, which is from
       outer to inner: that is, from the top to the bottom in the Builder DSL code.

AUTHOR

       Tatsuhiko Miyagawa

       Steve Cook

SEE ALSO

       Plack::Builder

perl v5.14.2							    2012-04-14				       Plack::Middleware::Conditional(3pm)

Linux and UNIX Man Pages

plack::middleware::accesslog(3pm) [debian man page]

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