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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Plack::Middleware::AccessLog \- Logs requests like Apache's log format .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 2 \& # in app.psgi \& use Plack::Builder; \& \& builder { \& enable "Plack::Middleware::AccessLog", format => "combined"; \& $app; \& }; .Ve .SH "DESCRIPTION" .IX Header "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 \f(CW\*(C`combined\*(C'\fR or \&\f(CW\*(C`common\*(C'\fR for the default formats). If none is specified \f(CW\*(C`combined\*(C'\fR is used. .PP This middleware uses calculable Content-Length by checking body type, and cannot log the time taken to serve requests. It also logs the request \fBbefore\fR the response is actually sent to the client. Use Plack::Middleware::AccessLog::Timed if you want to log details \&\fBafter\fR the response is transmitted (more like a real web server) to the client. .PP This middleware is enabled by default when you run plackup as a default \f(CW\*(C`development\*(C'\fR environment. .SH "CONFIGURATION" .IX Header "CONFIGURATION" .IP "format" 4 .IX Item "format" .Vb 2 \& enable "Plack::Middleware::AccessLog", \& format => \*(Aq%h %l %u %t "%r" %>s %b "%{Referer}i" "%{User\-agent}i"\*(Aq; .Ve .Sp Takes a format string (or a preset template \f(CW\*(C`combined\*(C'\fR or \f(CW\*(C`custom\*(C'\fR) to specify the log format. This middleware uses Apache::LogFormat::Compiler to generate access_log lines. See more details on perldoc Apache::LogFormat::Compiler .Sp .Vb 10 \& %% 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 of the response \& %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 \- \& %p SERVER_PORT from the PSGI environment \& %P the worker\*(Aqs process id \& %m REQUEST_METHOD from the PSGI environment \& %U PATH_INFO from the PSGI environment \& %q QUERY_STRING from the PSGI environment \& %H SERVER_PROTOCOL from the PSGI environment .Ve .Sp Some of these format fields are only supported by middleware that subclasses \f(CW\*(C`AccessLog\*(C'\fR. .Sp In addition, custom values can be referenced, using \f(CW\*(C`%{name}\*(C'\fR, with one of the mandatory modifier flags \f(CW\*(C`i\*(C'\fR, \f(CW\*(C`o\*(C'\fR or \f(CW\*(C`t\*(C'\fR: .Sp .Vb 3 \& %{variable\-name}i HTTP_VARIABLE_NAME value from the PSGI environment \& %{header\-name}o header\-name header in the response \& %{time\-format]t localtime in the specified strftime format .Ve .IP "logger" 4 .IX Item "logger" .Vb 3 \& my $logger = Log::Dispatch\->new(...); \& enable "Plack::Middleware::AccessLog", \& logger => sub { $logger\->log(level => \*(Aqdebug\*(Aq, message => @_) }; .Ve .Sp Sets a callback to print log message to. It prints to the \f(CW\*(C`psgi.errors\*(C'\fR output stream by default. .SH "AUTHORS" .IX Header "AUTHORS" Tatsuhiko Miyagawa .PP Masahiro Nagano .SH "SEE ALSO" .IX Header "SEE ALSO" Apache::LogFormat::Compiler, Rack::CustomLogger