JeroenED/custom-prometheus-exporter
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Refactor metric retrieval and display

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Improved handling of submetrics for better data organization and presentation. Updated metric values based on retrieved data, ensuring accurate representation in the metrics template file.
This commit is contained in:
Jeroen De Meerleer 2024-06-03 23:47:40 +02:00
parent 41f2ddea37
commit 069e550a3f
Signed by: JeroenED
GPG Key ID: 28CCCB8F62BFADD6
2 changed files with 50 additions and 42 deletions
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34
index.php
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@ -4,21 +4,26 @@ require 'config.php';
if(php_sapi_name() == 'cli' || $_SERVER["REQUEST_URI"] == '/metrics') { if(php_sapi_name() == 'cli' || $_SERVER["REQUEST_URI"] == '/metrics') {
header('Content-Type: text/plain; version=0.0.4'); header('Content-Type: text/plain; version=0.0.4');
foreach ($config as $key => &$c) { foreach ($config as $key => &$metric) {
if(isset($c['command'])) { if (!isset($metric['submetrics'])) {
$metric['submetrics'] = [$metric];
}
foreach ($metric['submetrics'] as $key => &$submetric) {
if (isset($submetric['command'])) {
$output = null; $output = null;
$retval = null; $retval = null;
exec($c['command'], $output, $retval); exec($submetric['command'], $output, $retval);
$output = implode("\n", $output); $output = implode("\n", $output);
} elseif(isset($c['http'])) { } elseif (isset($submetric['http'])) {
$client = new GuzzleHttp\Client(); $client = new GuzzleHttp\Client();
$options = []; $options = [];
$output = NULL; $output = NULL;
if (isset($c['http']['proxy'])) { if (isset($submetric['http']['proxy'])) {
$options['proxy'] = $c['http']['proxy']; $options['proxy'] = $submetric['http']['proxy'];
} }
if (isset($c['http']['data']) && $c['http']['data'] == 'responsetime') { if (isset($submetric['http']['data']) && $submetric['http']['data'] == 'responsetime') {
$options['on_stats'] = function (GuzzleHttp\TransferStats $stats) use (&$output) { $options['on_stats'] = function (GuzzleHttp\TransferStats $stats) use (&$output) {
$output = $stats->getTransferTime(); $output = $stats->getTransferTime();
}; };
@ -26,7 +31,7 @@ if(php_sapi_name() == 'cli' || $_SERVER["REQUEST_URI"] == '/metrics') {
$hasresponse = NULL; $hasresponse = NULL;
try { try {
$res = $client->request('GET', $c['http']['url'], $options); $res = $client->request('GET', $submetric['http']['url'], $options);
$hasresponse = true; $hasresponse = true;
} catch (GuzzleHttp\Exception\GuzzleException $e) { } catch (GuzzleHttp\Exception\GuzzleException $e) {
if (method_exists($e, 'getResponse')) { if (method_exists($e, 'getResponse')) {
@ -37,20 +42,21 @@ if(php_sapi_name() == 'cli' || $_SERVER["REQUEST_URI"] == '/metrics') {
} }
} }
if (isset($c['http']['data']) && $c['http']['data'] == 'responsebody') { if (isset($submetric['http']['data']) && $submetric['http']['data'] == 'responsebody') {
$output = $res->getBody()->getContents(); $output = $res->getBody()->getContents();
} elseif (isset($c['http']['data']) && $c['http']['data'] == 'hasresponse') { } elseif (isset($submetric['http']['data']) && $submetric['http']['data'] == 'hasresponse') {
$output = (int)$hasresponse; $output = (int)$hasresponse;
} }
} }
if(isset($c['jsonelem'])) { if (isset($submetric['jsonelem'])) {
$c['value'] = getArrayValue($c['jsonelem'], json_decode($output, true)); $submetric['value'] = getArrayValue($submetric['jsonelem'], json_decode($output, true));
} else { } else {
$c['value'] = $output; $submetric['value'] = $output;
} }
if(is_bool($c['value'])) $c['value'] = $c['value'] ? 1 : 0; if (is_bool($submetric['value'])) $submetric['value'] = $submetric['value'] ? 1 : 0;
}
} }
$loader = new \Twig\Loader\FilesystemLoader('templates'); $loader = new \Twig\Loader\FilesystemLoader('templates');

10
templates/metrics.twig
View File

@ -1,8 +1,10 @@
{% for key, elem in config %} {% for key, metric in config %}
{% if elem.help is defined and elem.help is not empty %} {% if metric.help is defined and metric.help is not empty %}
# HELP {{ key }} {{ elem.help }} # HELP {{ key }} {{ metric.help }}
{% endif %} {% endif %}
# TYPE {{ key }} gauge # TYPE {{ key }} gauge
{{ key }} {{ elem.value }} {% for subkey, submetric in metric.submetrics %}
{{ key }}{% if submetric.labels is defined and submetric.labels is not empty %}{{ '{' }}{% for label, value in submetric.labels %}{{ label }}="{{ value }}"{% if not loop.last %},{% endif %}{% endfor %}{{ '}' }}{% endif %} {{ submetric.value }}
{% endfor %}
{% endfor %} {% endfor %}