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foo 2014-01-05 10:54:46 +00:00
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commit 47e3a9980c
4 changed files with 73 additions and 57 deletions
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7
README.md Normal file → Executable file
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@ -4,3 +4,10 @@ river_levels
A munin plugin for monitoring a reformatted version of the Environment Agency's publicly available data about river levels in the UK.
See also: http://data.gov.uk/dataset/river-levels-15min/feedback/view
License
-------
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
http://creativecommons.org/licenses/by-sa/4.0/

5
getstations.pl
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@ -1,3 +1,8 @@
#!/usr/bin/env perl
# (C) Matthew Slowe, 2014
# This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
# http://creativecommons.org/licenses/by-sa/4.0/
use JSON::PP;
$DEBUG = $ENV{DEBUG};
$CatchmentId = shift @ARGV;

20
river_level_
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@ -1,22 +1,8 @@
#!/bin/sh
#
# Wildcard-script to monitor network interfaces. To monitor an
# interface, link vlan_<interface> to this file. E.g.
#
# ln /usr/share/munin/node/plugins-contrib/vlan_ /etc/munin/node.d/vlan_eth0_1
#
# ...will monitor eth0.1
#
# Parameters:
#
# config
# autoconf
# suggest
#
#%# family=manual
#%# capabilities=autoconf suggest
# URLBASE=
# (C) Matthew Slowe, 2014
# This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
# http://creativecommons.org/licenses/by-sa/4.0/
CACHE=/tmp/river_level_.dat
checkdata () {

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river_levels_
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@ -1,49 +1,53 @@
#!/bin/sh
#
# Wildcard-script to monitor network interfaces. To monitor an
# interface, link vlan_<interface> to this file. E.g.
# (C) Matthew Slowe, 2014
#
# ln /usr/share/munin/node/plugins-contrib/vlan_ /etc/munin/node.d/vlan_eth0_1
# This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
# http://creativecommons.org/licenses/by-sa/4.0/
#
# ...will monitor eth0.1
# Wildcard-script to monitor a river system's catchment area. To monitor a
# particular catchment aread, link river_levels_<id> to this file. E.g.
#
# ln /usr/share/munin/node/plugins-contrib/river_levels_ /etc/munin/node.d/river_levels_123
#
# ...will monitor catchment area 123.
#
# Parameters:
#
# config
# autoconf
# suggest
# config
# autoconf
# suggest
#
#%# family=manual
#%# capabilities=autoconf suggest
# URLBASE=
# Expects a config file to specify which stations to include in the data check and name the catchment
#
# [river_levels_]
# env.urlbase http://path.to.service/path
#
# [river_levels_123]
# env.stations 23 24 25 26
# env.catchmentname Great River
#
# The station list can be generated by using getstations.pl:
# host$ perl getstations.pl 123 </tmp/river_level_.dat
# 23 24 25 26
CACHE=/tmp/river_level_.dat
checkdata () {
if test `find "$CACHE" -mtime +1`
then
curl -o $CACHE -Ss $URLBASE || exit 1
fi
if test `find "$CACHE" -mtime +1`
then
curl -o $CACHE -Ss $URLBASE || exit 1
fi
}
getstationname () {
checkdata
NAME=$( perl -MJSON::PP -e '
open $fh, "/tmp/river_level_.dat" or die $!;
$data_arr = decode_json(<$fh>) or die $!;
my %data;
foreach (@{$data_arr->{data}}) {
$data{$_->{id}} = $_;
}
foreach (@ARGV) { print $data{$_}->{river}, " at ", $data{$_}->{station}, "\n"; }
' $* )
}
STATION=$(basename $0 | sed 's/^river_level_//g' | cut -d_ -f 3)
CATCHMENT=$(basename $0 | sed 's/^river_levels_//g' | cut -d_ -f 3)
if [ "$1" = "autoconf" ]; then
echo "no"
echo "no"
exit 0
fi
@ -52,17 +56,31 @@ if [ "$1" = "suggest" ]; then
fi
if [ "$1" = "config" ]; then
getstationname $STATION
echo "graph_title River Level for $NAME [$STATION]"
echo 'graph_args --base 1000 -l 0 '
echo 'graph_vlabel station level (metres)'
echo 'graph_category rivers'
echo 'graph_info This graph shows river levels'
echo "level.label $NAME"
echo 'level.info Current river level (metres)'
exit 0
echo "graph_title River Levels for $catchmentname [$CATCHMENT]"
echo 'graph_args --base 1000 -l 0 '
echo 'graph_vlabel station level (metres)'
echo 'graph_category rivers'
echo 'graph_info This graph shows river levels'
checkdata
perl -e '
use JSON::PP;
$CatchmentId = shift @ARGV;
$in = decode_json(<>) or die;
foreach $station (@{$in->{data}}) {
if ($station->{url} =~ /CatchmentId=$CatchmentId$/) {
$id = $station->{id};
$river = $station->{river};
$name = $station->{station};
print "river_level_$id.label $name on $river ($id)\n";
print "river_level_$id.info Current river level (metres)\n";
}
}
' $CATCHMENT <$CACHE
exit 0
fi
curl -sS $URLBASE/$STATION |
perl -MJSON::PP -e '$d=decode_json(<>) or die; print "level.value $d->{data}->{current}->{level}\n";'
for STATION in $stations ; do
curl -m 5 -sS $urlbase/$STATION |
perl -MJSON::PP -e '$id=shift(@ARGV); $d=decode_json(<>) or die; print "river_level_$id.value $d->{data}->{current}->{level}\n";' $STATION
done