IcingaConfig: render host templates to all...

...non-global zones, instead of the default global zone

refs #2410

doc/82-Changelog.md

@@ -26,6 +26,7 @@ This version hasn't been released yet
 
 ### Icinga Configuration
 * FEATURE: render fallback template for IfW 1.11 for Icinga < 2.14 (#2776)
+* FEATURE: render host templates to all non-global zones per default (#2410)
 * FIX: render Set Services to individual zones where required (#1589, #2356)
 * FIX: special characters like & and | caused trouble in filters (#2667)
 

library/Director/IcingaConfig/IcingaConfig.php

@@ -25,6 +25,9 @@ class IcingaConfig
 
     protected $zoneMap = array();
 
+    /** @var ?array Exists for caching reasons at rendering time */
+    protected $nonGlobalZones = null;
+
     protected $lastActivityChecksum;
 
     /** @var \Zend_Db_Adapter_Abstract */
@@ -349,6 +352,15 @@ class IcingaConfig
         return $this->zoneMap[$id];
     }
 
+    public function listNonGlobalZones(): array
+    {
+        if ($this->nonGlobalZones === null) {
+            $this->nonGlobalZones = array_values($this->connection->enumNonglobalZones());
+        }
+
+        return $this->nonGlobalZones;
+    }
+
     /**
      * @return self
      */

library/Director/Objects/IcingaHost.php

@@ -309,6 +309,20 @@ class IcingaHost extends IcingaObject implements ExportInterface
         }
     }
 
+    protected function rendersConditionalTemplate(): bool
+    {
+        return $this->getRenderingZone() === self::ALL_NON_GLOBAL_ZONES;
+    }
+
+    protected function getDefaultZone(IcingaConfig $config = null)
+    {
+        if ($this->isTemplate()) {
+            return self::ALL_NON_GLOBAL_ZONES;
+        }
+
+        return parent::getDefaultZone();
+    }
+
     public function beforeDelete()
     {
         foreach ($this->fetchServices() as $service) {

library/Director/Objects/IcingaObject.php

@@ -27,6 +27,7 @@ use RuntimeException;
 abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
 {
     const RESOLVE_ERROR = '(unable to resolve)';
+    const ALL_NON_GLOBAL_ZONES = '(all non-global zones)';
 
     protected $keyName = 'object_name';
 
@@ -1800,9 +1801,21 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
             return;
         }
 
-        $config->configFile(
-            'zones.d/' . $this->getRenderingZone($config) . '/' . $this->getRenderingFilename()
-        )->addObject($this);
+        foreach ($this->getRenderingZones($config) as $zone) {
+            $config->configFile(
+                'zones.d/' . $zone . '/' . $this->getRenderingFilename()
+            )->addObject($this);
+        }
+    }
+
+    protected function getRenderingZones(IcingaConfig $config): array
+    {
+        $zone = $this->getRenderingZone($config);
+        if ($zone === self::ALL_NON_GLOBAL_ZONES) {
+            return $config->listNonGlobalZones();
+        }
+
+        return [$zone];
     }
 
     public function getRenderingFilename()
@@ -2181,7 +2194,12 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
 
     protected function renderSuffix()
     {
-        return "}\n\n";
+        $prefix = '';
+        if ($this->rendersConditionalTemplate()) {
+            $prefix = '} ';
+        }
+
+        return "$prefix}\n\n";
     }
 
     protected function renderLegacySuffix()
@@ -2406,14 +2424,25 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
 
     protected function renderObjectHeader()
     {
+        $prefix = '';
+        $renderedName = c::renderString($this->getObjectName());
+        if ($this->rendersConditionalTemplate()) {
+            $prefix = sprintf('if (! get_template(%s, %s)) { ', $this->getType(), $renderedName);
+        }
         return sprintf(
-            "%s %s %s {\n",
+            "%s%s %s %s {\n",
+            $prefix,
             $this->getObjectTypeName(),
             $this->getType(),
-            c::renderString($this->getObjectName())
+            $renderedName
         );
     }
 
+    protected function rendersConditionalTemplate(): bool
+    {
+        return false;
+    }
+
     public function getLegacyObjectType()
     {
         return strtolower($this->getType());

library/Director/Objects/IcingaService.php

@@ -384,6 +384,11 @@ class IcingaService extends IcingaObject implements ExportInterface
         }
     }
 
+    protected function rendersConditionalTemplate(): bool
+    {
+        return $this->getRenderingZone() === self::ALL_NON_GLOBAL_ZONES;
+    }
+
     /**
      * @return bool
      */
@@ -578,11 +583,22 @@ class IcingaService extends IcingaObject implements ExportInterface
 
     protected function getDefaultZone(IcingaConfig $config = null)
     {
+        // Hint: this isn't possible yet, as we're unable to render dependent apply rules to multiple zones as well
+        // if ($this->isTemplate()) {
+        //     return self::ALL_NON_GLOBAL_ZONES;
+        // }
         if ($this->get('host_id') === null) {
             return parent::getDefaultZone();
         } else {
-            return $this->getRelatedObject('host', $this->get('host_id'))
+            $zone = $this->getRelatedObject('host', $this->get('host_id'))
                 ->getRenderingZone($config);
+
+            // Hint: this avoids problems with host templates rendered to all non-global zones
+            if ($zone === self::ALL_NON_GLOBAL_ZONES) {
+                $zone = $this->connection->getDefaultGlobalZoneName();
+            }
+
+            return $zone;
         }
     }
 

library/Director/Objects/IcingaServiceSet.php

@@ -264,9 +264,10 @@ class IcingaServiceSet extends IcingaObject implements ExportInterface
             }
 
             $this->copyVarsToService($service);
-            $zone = $service->getRenderingZone($config);
-            $file = $this->getConfigFileWithHeader($config, $zone, $files);
-            $file->addObject($service);
+            foreach ($service->getRenderingZones($config) as $serviceZone) {
+                $file = $this->getConfigFileWithHeader($config, $serviceZone, $files);
+                $file->addObject($service);
+            }
         }
 
         if (empty($files)) {

test/php/library/Director/Objects/IcingaHostTest.php

@@ -396,10 +396,16 @@ class IcingaHostTest extends BaseTestCase
         $host->object_type = 'template';
         $host->zone_id = null;
 
+        $zone = $this->newObject('zone', '___TEST___zone2');
+        $zone->store($db);
+
         $config = new IcingaConfig($db);
         $host->renderToConfig($config);
         $this->assertEquals(
-            array('zones.d/director-global/host_templates.conf'),
+            [
+                'zones.d/___TEST___zone/host_templates.conf',
+                'zones.d/___TEST___zone2/host_templates.conf',
+            ],
             $config->getFileNames()
         );
     }