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.\"
.IX Title "Net::Prometheus::Counter 3pm"
.TH Net::Prometheus::Counter 3pm 2024-03-07 "perl v5.38.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH NAME
"Net::Prometheus::Counter" \- a monotonically\-increasing counter metric
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&   use Net::Prometheus;
\&
\&   my $client = Net::Prometheus\->new;
\&
\&   my $counter = $client\->new_counter(
\&      name => "requests",
\&      help => "Number of received requests",
\&   );
\&
\&   sub handle_request
\&   {
\&      $counter\->inc;
\&      ...
\&   }
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
This class provides a counter metric \- a value that monotonically increases,
usually used to represent occurrences of some event that happens within the
instrumented program. It is a subclass of Net::Prometheus::Metric.
.SH CONSTRUCTOR
.IX Header "CONSTRUCTOR"
Instances of this class are not usually constructed directly, but instead via
the Net::Prometheus object that will serve it:
.PP
.Vb 1
\&   $counter = $prometheus\->new_counter( %args )
.Ve
.PP
This takes the same constructor arguments as documented in
Net::Prometheus::Metric.
.SH METHODS
.IX Header "METHODS"
.SS inc
.IX Subsection "inc"
.Vb 2
\&   $counter\->inc( @label_values, $delta )
\&   $counter\->inc( \e%labels, $delta )
\&
\&   $child\->inc( $delta )
.Ve
.PP
Increment the current value for the gauge. \f(CW$delta\fR will default to 1 if not
supplied and must be non-negative.
.SH AUTHOR
.IX Header "AUTHOR"
Paul Evans <leonerd@leonerd.org.uk>