#!/bin/sh
# -*- sh -*-

: << =cut

=head1 NAME

http_loadtime - Plugin to graph HTTP response time of a specific page

=head1 CONFIGURATION

The following environment variables are used by this plugin

 target - URL to fetch (default: "http://localhost/")

=head1 AUTHOR

Unknown author

=head1 LICENSE

Unknown license

=head1 MAGIC MARKERS

 #%# family=auto
 #%# capabilities=autoconf

=cut

target=${target:-"http://localhost/"}
time_bin=$(which time)
wget_bin=$(which wget)

if [ "$1" = "autoconf" ]; then
    result="yes"
    [ "x$time_bin" = "x" ] && result=1
    [ "x$wget_bin" = "x" ] && result=2
    if [ "$result" != "yes" ]; then
	echo "no (need time and wget programs)"
	exit 0
    fi
    echo yes
    exit 0
fi

if [ "$1" = "config" ]; then
    echo "graph_title HTTP loadtime of a page"
    echo "graph_args --base 1000 -l 0"
    echo "graph_vlabel Load time in seconds"
    echo "graph_category network"
    echo "graph_info This graph shows load time in seconds of $target"
    echo "loadtime.label loadtime"
    echo "loadtime.info Load time"
    exit 0
fi

TMPDIR=`mktemp -d` || exit 1

trap "rm -rf $TMPDIR" EXIT

cd $TMPDIR || exit 1
loadtime=$($time_bin -p $wget_bin -p --no-cache --delete-after $target -q 2>&1 | awk '/^real / { print $2 }')
cd ..

echo "loadtime.value $loadtime"