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Added support for multiple attribute checks in same call and wildcard output

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This commit is contained in:
Manuel Sousa 2014-09-26 18:01:12 +01:00
parent a4529419db
commit 045219b9bb
1 changed files with 45 additions and 26 deletions
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71
check_json.pl
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@ -8,8 +8,8 @@ use Nagios::Plugin;
use Data::Dumper; use Data::Dumper;
my $np = Nagios::Plugin->new( my $np = Nagios::Plugin->new(
usage => "Usage: %s -u|--url <URL> -a|--attribute <attribute> " usage => "Usage: %s -u|--url <URL> -a|--attributes <attributes> "
. "[ -c|--critical <threshold> ] [ -w|--warning <threshold> ] " . "[ -c|--critical <thresholds> ] [ -w|--warning <thresholds> ] "
. "[ -p|--perfvars <fields> ] " . "[ -p|--perfvars <fields> ] "
. "[ -o|--outputvars <fields> ] " . "[ -o|--outputvars <fields> ] "
. "[ -t|--timeout <timeout> ] " . "[ -t|--timeout <timeout> ] "
@ -20,7 +20,7 @@ my $np = Nagios::Plugin->new(
version => '0.4', version => '0.4',
blurb => 'Nagios plugin to check JSON attributes via http(s)', blurb => 'Nagios plugin to check JSON attributes via http(s)',
extra => "\nExample: \n" extra => "\nExample: \n"
. "check_json.pl --url http://192.168.5.10:9332/local_stats --attribute '{shares}->{dead}' " . "check_json.pl --url http://192.168.5.10:9332/local_stats --attributes '{shares}->{dead}' "
. "--warning :5 --critical :10 --perfvars '{shares}->{dead},{shares}->{live}' " . "--warning :5 --critical :10 --perfvars '{shares}->{dead},{shares}->{live}' "
. "--outputvars '{status_message}'", . "--outputvars '{status_message}'",
url => 'https://github.com/c-kr/check_json', url => 'https://github.com/c-kr/check_json',
@ -37,8 +37,8 @@ $np->add_arg(
); );
$np->add_arg( $np->add_arg(
spec => 'attribute|a=s', spec => 'attributes|a=s',
help => '-a, --attribute {shares}->{dead}', help => '-a, --attributes {shares}->{dead},{shares}->{uptime}',
required => 1, required => 1,
); );
@ -63,13 +63,13 @@ $np->add_arg(
$np->add_arg( $np->add_arg(
spec => 'perfvars|p=s', spec => 'perfvars|p=s',
help => "-p, --perfvars eg. '{shares}->{dead},{shares}->{live}'\n " help => "-p, --perfvars eg. '* or {shares}->{dead},{shares}->{live}'\n "
. "CSV list of fields from JSON response to include in perfdata " . "CSV list of fields from JSON response to include in perfdata "
); );
$np->add_arg( $np->add_arg(
spec => 'outputvars|o=s', spec => 'outputvars|o=s',
help => "-o, --outputvars eg. '{status_message}'\n " help => "-o, --outputvars eg. '* or {status_message}'\n "
. "CSV list of fields output in status message, same syntax as perfvars" . "CSV list of fields output in status message, same syntax as perfvars"
); );
@ -118,27 +118,47 @@ if ($response->is_success) {
my $json_response = decode_json($response->content); my $json_response = decode_json($response->content);
if ($np->opts->verbose) { (print Dumper ($json_response))}; if ($np->opts->verbose) { (print Dumper ($json_response))};
my @attributes = split(',', $np->opts->attributes);
my @warning = split(',', $np->opts->warning);
my @critical = split(',', $np->opts->critical);
my @divisor = $np->opts->divisor ? split(',',$np->opts->divisor) : () ;
my %attributes = map { $attributes[$_] => { warning => $warning[$_] , critical => $critical[$_], divisor => ($divisor[$_] or 0) } } 0..$#attributes;
my %check_value;
my $check_value; my $check_value;
my $check_value_str = '$check_value = $json_response->'.$np->opts->attribute; my $result = -1;
if ($np->opts->verbose) { (print Dumper ($check_value_str))}; foreach my $attribute (sort keys %attributes){
eval $check_value_str; my $check_value;
my $check_value_str = '$check_value = $json_response->'.$attribute;
if (!defined $check_value) { if ($np->opts->verbose) { (print Dumper ($check_value_str))};
$np->nagios_exit(UNKNOWN, "No value received"); eval $check_value_str;
if (!defined $check_value) {
$np->nagios_exit(UNKNOWN, "No value received");
}
if ($attributes{$attribute}{'divisor'}) {
$check_value = $check_value/$attributes{$attribute}{'divisor'};
}
my $resultTmp = $np->check_threshold(
check => $check_value,
warning => $attributes{$attribute}{'warning'},
critical => $attributes{$attribute}{'critical'}
);
$result = $resultTmp if $result < $resultTmp;
$attributes{$attribute}{'check_value'}=$check_value;
} }
if (defined $np->opts->divisor) {
$check_value = $check_value/$np->opts->divisor;
}
my $result = $np->check_threshold($check_value);
my @statusmsg; my @statusmsg;
# routine to add perfdata from JSON response based on a loop of keys given in perfvals (csv) # routine to add perfdata from JSON response based on a loop of keys given in perfvals (csv)
if ($np->opts->perfvars) { if ($np->opts->perfvars) {
foreach my $key (split(',', $np->opts->perfvars)) { foreach my $key ($np->opts->perfvars eq '*' ? map { "{$_}"} sort keys $json_response : split(',', $np->opts->perfvars)) {
# use last element of key as label # use last element of key as label
my $label = (split('->', $key))[-1]; my $label = (split('->', $key))[-1];
# make label ascii compatible # make label ascii compatible
@ -148,12 +168,12 @@ if ($np->opts->perfvars) {
if ($np->opts->verbose) { print Dumper ("JSON key: ".$label.", JSON val: " . $perf_value) }; if ($np->opts->verbose) { print Dumper ("JSON key: ".$label.", JSON val: " . $perf_value) };
if ( defined($perf_value) ) { if ( defined($perf_value) ) {
# add threshold if attribute option matches key # add threshold if attribute option matches key
if ($key eq $np->opts->attribute) { if ($attributes{$key}) {
push(@statusmsg, "$label: $check_value"); push(@statusmsg, "$label: $attributes{$key}{'check_value'}");
$np->add_perfdata( $np->add_perfdata(
label => lc $label, label => lc $label,
value => $check_value, value => $attributes{$key}{'check_value'},
threshold => $np->threshold(), threshold => $np->set_thresholds( warning => $attributes{$key}{'warning'}, critical => $attributes{$key}{'critical'}),
); );
} else { } else {
push(@statusmsg, "$label: $perf_value"); push(@statusmsg, "$label: $perf_value");
@ -168,14 +188,14 @@ if ($np->opts->perfvars) {
# output some vars in message # output some vars in message
if ($np->opts->outputvars) { if ($np->opts->outputvars) {
foreach my $key (split(',', $np->opts->outputvars)) { foreach my $key ($np->opts->outputvars eq '*' ? map { "{$_}"} sort keys $json_response : split(',', $np->opts->outputvars)) {
# use last element of key as label # use last element of key as label
my $label = (split('->', $key))[-1]; my $label = (split('->', $key))[-1];
# make label ascii compatible # make label ascii compatible
$label =~ s/[^a-zA-Z0-9_-]//g; $label =~ s/[^a-zA-Z0-9_-]//g;
my $perf_value; my $perf_value;
$perf_value = eval '$json_response->'.$key; $perf_value = eval '$json_response->'.$key;
push(@statusmsg, "$label: $perf_value"); push(@statusmsg, "$label: $perf_value");
} }
} }
@ -183,4 +203,3 @@ $np->nagios_exit(
return_code => $result, return_code => $result,
message => join(', ', @statusmsg), message => join(', ', @statusmsg),
); );