1 files changed, 151 insertions, 0 deletions
diff --git a/library/Businessprocess/State/MonitoringState.php b/library/Businessprocess/State/MonitoringState.php
new file mode 100644
index 0000000..b6a2391
--- /dev/null
+++ b/library/Businessprocess/State/MonitoringState.php
@@ -0,0 +1,151 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\State;
+
+use Exception;
+use Icinga\Application\Benchmark;
+use Icinga\Data\Filter\Filter;
+use Icinga\Module\Businessprocess\BpConfig;
+use Icinga\Module\Businessprocess\ServiceNode;
+use Icinga\Module\Monitoring\Backend\MonitoringBackend;
+
+class MonitoringState
+{
+    /** @var BpConfig */
+    protected $config;
+
+    /** @var MonitoringBackend */
+    protected $backend;
+
+    private function __construct(BpConfig $config)
+    {
+        $this->config = $config;
+        $this->backend = $config->getBackend();
+    }
+
+    public static function apply(BpConfig $config)
+    {
+        $self = new static($config);
+        $self->retrieveStatesFromBackend();
+        return $config;
+    }
+
+    public function retrieveStatesFromBackend()
+    {
+        $config = $this->config;
+
+        try {
+            $this->reallyRetrieveStatesFromBackend();
+        } catch (Exception $e) {
+            $config->addError(
+                $config->translate('Could not retrieve process state: %s'),
+                $e->getMessage()
+            );
+        }
+    }
+
+    public function reallyRetrieveStatesFromBackend()
+    {
+        $config = $this->config;
+
+        Benchmark::measure('Retrieving states for business process ' . $config->getName());
+        $backend = $this->backend;
+
+        if ($config->usesHardStates()) {
+            $hostStateColumn          = 'host_hard_state';
+            $hostStateChangeColumn    = 'host_last_hard_state_change';
+            $serviceStateColumn       = 'service_hard_state';
+            $serviceStateChangeColumn = 'service_last_hard_state_change';
+        } else {
+            $hostStateColumn          = 'host_state';
+            $hostStateChangeColumn    = 'host_last_state_change';
+            $serviceStateColumn       = 'service_state';
+            $serviceStateChangeColumn = 'service_last_state_change';
+        }
+
+        $hosts = $config->listInvolvedHostNames();
+        if (empty($hosts)) {
+            return $this;
+        }
+
+        $hostFilter = Filter::expression('host_name', '=', $hosts);
+
+        $hostStatus = $backend->select()->from('hostStatus', array(
+            'hostname'          => 'host_name',
+            'last_state_change' => $hostStateChangeColumn,
+            'in_downtime'       => 'host_in_downtime',
+            'ack'               => 'host_acknowledged',
+            'state'             => $hostStateColumn,
+            'display_name'      => 'host_display_name'
+        ))->applyFilter($hostFilter)->getQuery()->fetchAll();
+
+        Benchmark::measure('Retrieved states for ' . count($hostStatus) . ' hosts in ' . $config->getName());
+
+        // NOTE: we intentionally filter by host_name ONLY
+        // Tests with host IN ... AND service IN shows longer query times
+        // while retrieving 1635 (in 5ms) vs. 1388 (in ~430ms) services
+        $serviceStatus = $backend->select()->from('serviceStatus', array(
+            'hostname'          => 'host_name',
+            'service'           => 'service_description',
+            'last_state_change' => $serviceStateChangeColumn,
+            'in_downtime'       => 'service_in_downtime',
+            'ack'               => 'service_acknowledged',
+            'state'             => $serviceStateColumn,
+            'display_name'      => 'service_display_name',
+            'host_display_name' => 'host_display_name'
+        ))->applyFilter($hostFilter)->getQuery()->fetchAll();
+
+        Benchmark::measure('Retrieved states for ' . count($serviceStatus) . ' services in ' . $config->getName());
+
+        $configs = $config->listInvolvedConfigs();
+        foreach ($configs as $cfg) {
+            foreach ($serviceStatus as $row) {
+                $this->handleDbRow($row, $cfg);
+            }
+            foreach ($hostStatus as $row) {
+                $this->handleDbRow($row, $cfg);
+            }
+        }
+
+        // TODO: Union, single query?
+        Benchmark::measure('Got states for business process ' . $config->getName());
+
+        return $this;
+    }
+
+    protected function handleDbRow($row, BpConfig $config)
+    {
+        $key = BpConfig::joinNodeName(
+            $row->hostname,
+            property_exists($row, 'service')
+                ? $row->service
+                : 'Hoststatus'
+        );
+
+        // We fetch more states than we need, so skip unknown ones
+        if (! $config->hasNode($key)) {
+            return;
+        }
+
+        $node = $config->getNode($key);
+
+        if ($row->state !== null) {
+            $node->setState($row->state)->setMissing(false);
+        }
+        if ($row->last_state_change !== null) {
+            $node->setLastStateChange($row->last_state_change);
+        }
+        if ((int) $row->in_downtime === 1) {
+            $node->setDowntime(true);
+        }
+        if ((int) $row->ack === 1) {
+            $node->setAck(true);
+        }
+
+        $node->setAlias($row->display_name);
+
+        if ($node instanceof ServiceNode) {
+            $node->setHostAlias($row->host_display_name);
+        }
+    }
+}