1 files changed, 115 insertions, 0 deletions
diff --git a/library/Icingadb/ProvidedHook/IcingaHealth.php b/library/Icingadb/ProvidedHook/IcingaHealth.php
new file mode 100644
index 0000000..863c207
--- /dev/null
+++ b/library/Icingadb/ProvidedHook/IcingaHealth.php
@@ -0,0 +1,115 @@
+<?php
+
+// Icinga DB Web | (c) 2021 Icinga GmbH | GPLv2
+
+namespace Icinga\Module\Icingadb\ProvidedHook;
+
+use Icinga\Application\Hook\HealthHook;
+use Icinga\Module\Icingadb\Common\Database;
+use Icinga\Module\Icingadb\Model\Instance;
+use ipl\Web\Url;
+
+class IcingaHealth extends HealthHook
+{
+    use Database;
+
+    /** @var Instance */
+    protected $instance;
+
+    public function getName(): string
+    {
+        return 'Icinga DB';
+    }
+
+    public function getUrl(): Url
+    {
+        return Url::fromPath('icingadb/health');
+    }
+
+    public function checkHealth()
+    {
+        $instance = $this->getInstance();
+
+        if ($instance === null) {
+            $this->setState(self::STATE_UNKNOWN);
+            $this->setMessage(t(
+                'Icinga DB is not running or not writing into the database'
+                . ' (make sure the icinga feature "icingadb" is enabled)'
+            ));
+        } elseif ($instance->heartbeat < time() - 60) {
+            $this->setState(self::STATE_CRITICAL);
+            $this->setMessage(t(
+                'Icinga DB is not running or not writing into the database'
+                . ' (make sure the icinga feature "icingadb" is enabled)'
+            ));
+        } else {
+            $this->setState(self::STATE_OK);
+            $this->setMessage(t('Icinga DB is running and writing into the database'));
+            $warningMessages = [];
+
+            if (! $instance->icinga2_active_host_checks_enabled) {
+                $this->setState(self::STATE_WARNING);
+                $warningMessages[] = t('Active host checks are disabled');
+            }
+
+            if (! $instance->icinga2_active_service_checks_enabled) {
+                $this->setState(self::STATE_WARNING);
+                $warningMessages[] = t('Active service checks are disabled');
+            }
+
+            if (! $instance->icinga2_notifications_enabled) {
+                $this->setState(self::STATE_WARNING);
+                $warningMessages[] = t('Notifications are disabled');
+            }
+
+            if ($this->getState() === self::STATE_WARNING) {
+                $this->setMessage(implode("; ", $warningMessages));
+            }
+        }
+
+        if ($instance !== null) {
+            $this->setMetrics([
+                'heartbeat' => $instance->heartbeat,
+                'responsible' => $instance->responsible,
+                'icinga2_active_host_checks_enabled' => $instance->icinga2_active_host_checks_enabled,
+                'icinga2_active_service_checks_enabled' => $instance->icinga2_active_service_checks_enabled,
+                'icinga2_event_handlers_enabled' => $instance->icinga2_event_handlers_enabled,
+                'icinga2_flap_detection_enabled' => $instance->icinga2_flap_detection_enabled,
+                'icinga2_notifications_enabled' => $instance->icinga2_notifications_enabled,
+                'icinga2_performance_data_enabled' => $instance->icinga2_performance_data_enabled,
+                'icinga2_start_time' => $instance->icinga2_start_time,
+                'icinga2_version' => $instance->icinga2_version,
+                'endpoint' => ['name' => $instance->endpoint->name]
+            ]);
+        }
+    }
+
+    /**
+     * Get an Icinga DB instance
+     *
+     * @return ?Instance
+     */
+    protected function getInstance()
+    {
+        if ($this->instance === null) {
+            $this->instance = Instance::on($this->getDb())
+                ->with('endpoint')
+                ->columns([
+                    'heartbeat',
+                    'responsible',
+                    'icinga2_active_host_checks_enabled',
+                    'icinga2_active_service_checks_enabled',
+                    'icinga2_event_handlers_enabled',
+                    'icinga2_flap_detection_enabled',
+                    'icinga2_notifications_enabled',
+                    'icinga2_performance_data_enabled',
+                    'icinga2_start_time',
+                    'icinga2_version',
+                    'endpoint.name'
+                ])
+                ->first();
+        }
+
+        return $this->instance;
+    }
+}