1 files changed, 64 insertions, 0 deletions
diff --git a/library/Director/Deployment/ConditionalConfigRenderer.php b/library/Director/Deployment/ConditionalConfigRenderer.php
new file mode 100644
index 0000000..0b24418
--- /dev/null
+++ b/library/Director/Deployment/ConditionalConfigRenderer.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace Icinga\Module\Director\Deployment;
+
+use Icinga\Exception\NotFoundError;
+use Icinga\Module\Director\Db;
+use Icinga\Module\Director\IcingaConfig\IcingaConfig;
+use Icinga\Module\Director\Objects\DirectorActivityLog;
+
+class ConditionalConfigRenderer
+{
+    /** @var Db */
+    protected $db;
+
+    protected $forceRendering = false;
+
+    public function __construct(Db $connection)
+    {
+        $this->db = $connection;
+    }
+
+    public function forceRendering($force = true)
+    {
+        $this->forceRendering = $force;
+
+        return $this;
+    }
+
+    public function getConfig()
+    {
+        if ($this->shouldGenerate()) {
+            return IcingaConfig::generate($this->db);
+        }
+
+        return $this->loadLatestActivityConfig();
+    }
+
+    protected function loadLatestActivityConfig()
+    {
+        $db = $this->db;
+
+        return IcingaConfig::loadByActivityChecksum($db->getLastActivityChecksum(), $db);
+    }
+
+    protected function shouldGenerate()
+    {
+        return $this->forceRendering || !$this->configForLatestActivityExists();
+    }
+
+    protected function configForLatestActivityExists()
+    {
+        $db = $this->db;
+        try {
+            $latestActivity = DirectorActivityLog::loadLatest($db);
+        } catch (NotFoundError $e) {
+            return false;
+        }
+
+        return IcingaConfig::existsForActivityChecksum(
+            bin2hex($latestActivity->get('checksum')),
+            $db
+        );
+    }
+}