Introduce SQLite resource type

refs #3381

Signed-off-by: Eric Lippmann <eric.lippmann@icinga.com>

application/forms/Config/Resource/DbResourceForm.php

@@ -45,6 +45,9 @@ class DbResourceForm extends Form
         if (Platform::hasOciSupport()) {
             $dbChoices['oci'] = 'Oracle (OCI8)';
         }
+        if (Platform::hasSqliteSupport()) {
+            $dbChoices['sqlite'] = 'SQLite';
+        }
 
         $offerPostgres = false;
         $offerIbm = false;
@@ -89,6 +92,17 @@ class DbResourceForm extends Form
                 'multiOptions'  => $dbChoices
             )
         );
+        if ($dbChoice === 'sqlite') {
+            $this->addElement(
+                'text',
+                'dbname',
+                array(
+                    'required'      => true,
+                    'label'         => $this->translate('Database Name'),
+                    'description'   => $this->translate('The name of the database to use')
+                )
+            );
+        } else {
             $this->addElement(
                 'text',
                 'host',
@@ -133,6 +147,7 @@ class DbResourceForm extends Form
                 'password',
                 'password',
                 array(
+                    'required'          => true,
                     'renderPassword'    => true,
                     'label'             => $this->translate('Password'),
                     'description'       => $this->translate('The password to use for authentication')
@@ -201,6 +216,7 @@ class DbResourceForm extends Form
                     )
                 );
             }
+        }
 
         return $this;
     }

library/Icinga/Application/Platform.php

@@ -420,4 +420,16 @@ class Platform
     {
         return static::extensionLoaded('pdo_pgsql') && static::classExists('Zend_Db_Adapter_Pdo_Pgsql');
     }
+
+    /**
+     * Return whether it's possible to connect to a SQLite database
+     *
+     * Checks whether the sqlite pdo extension has been loaded and the Zend framework adapter for SQLite is available
+     *
+     * @return  bool
+     */
+    public static function hasSqliteSupport()
+    {
+        return static::extensionLoaded('pdo_sqlite') && static::classExists('Zend_Db_Adapter_Pdo_Sqlite');
+    }
 }

library/Icinga/Data/Db/DbConnection.php

@@ -224,6 +224,10 @@ class DbConnection implements Selectable, Extensible, Updatable, Reducible, Insp
                 $adapter = 'Pdo_Ibm';
                 $defaultPort = 50000;
                 break;
+            case 'sqlite':
+                $adapter = 'Pdo_Sqlite';
+                $defaultPort = 0; // Dummy port because a value is required
+                break;
             default:
                 throw new ConfigurationError(
                     'Backend "%s" is not supported',