Introduce new helper function to further cleanup code

[omvzfs.git] / src / Dataset.php

diff --git a/src/Dataset.php b/src/Dataset.php
index 673d011b00f1ca9568a2f3b8110d45c8de8254b3..db3a165f848a6f8ee876e774c8bd5e6cf4e37359 100644 (file)
--- a/src/Dataset.php
+++ b/src/Dataset.php
@@ -42,15 +42,11 @@ class OMVModuleZFSDataset {
         *
         * @param string $name Name of the new Dataset
         * @param array $properties An associative array with properties to set when creating the Dataset
-        * @throws OMVModuleZFSException
         *
         */
        public function __construct($name, array $properties = null) {
                $cmd = "zfs create -p " . $name . " 2>&1";
-               OMVUtil::exec($cmd,$out,$res);
-               if ($res) {
-                       throw new OMVModuleZFSException(implode("\n", $out));
-               }
+               $this->exec($cmd,$out,$res);
                $this->name = $name;
                $this->updateAllProperties();
                $this->setProperties($properties);
@@ -110,10 +106,7 @@ class OMVModuleZFSDataset {
        public function setProperties($properties) {
                foreach ($properties as $newpropertyk => $newpropertyv) {
                        $cmd = "zfs set " . $newpropertyk . "=" . $newpropertyv . " " . $this->name;
-                       OMVUtil::exec($cmd,$out,$res);
-                       if ($res) {
-                               throw new OMVModuleZFSException(implode("\n", $out));
-                       }
+                       $this->exec($cmd,$out,$res);
                        $this->updateProperty($newpropertyk);
                }
        }
@@ -121,15 +114,12 @@ class OMVModuleZFSDataset {
        /**
         * Get all Dataset properties from commandline and update object properties attribute
         *
-        * @throws OMVModuleZFSException
+        * @return void
         * @access private
         */ 
        private function updateAllProperties() {
                $cmd = "zfs get -H all " . $this->name;
-               OMVUtil::exec($cmd,$out,$res);
-               if ($res) {
-                       throw new OMVModuleZFSException(implode("\n", $out));
-               }
+               $this->exec($cmd,$out,$res);
                unset($this->properties);
                foreach ($out as $line) {
                        $tmpary = preg_split('/\t+/', $line);
@@ -141,15 +131,12 @@ class OMVModuleZFSDataset {
         * Get single Datset property from commandline and update object property attribute
         *
         * @param string $property Name of the property to update
-        * @throws OMVModuleZFSException
+        * @return void
         * @access private
         */
        private function updateProperty($property) {
                $cmd = "zfs get -H " . $property . " " . $this->name;
-               OMVUtil::exec($cmd,$out,$res);
-               if ($res) {
-                       throw new OMVModuleZFSException(implode("\n", $out));
-               }
+               $this->exec($cmd,$out,$res);
                $tmpary = preg_split('/\t+/', $out[0]);
                $this->properties["$tmpary[1]"] = array($tmpary[2], $tmpary[3]);
        }
@@ -157,31 +144,58 @@ class OMVModuleZFSDataset {
        /**
         * Destroy the Dataset.
         *
-        * @throws OMVModuleZFSException
+        * @return void
         * @access public
         */
        public function destroy() {
                $cmd = "zfs destroy " . $this->name;
-               OMVUtil::exec($cmd,$out,$res);
-               if ($res) {
-                       throw new OMVModuleZFSException(implode("\n", $out));
-               }
+               $this->exec($cmd,$out,$res);
        }
 
        /**
         * Renames a Dataset
         *
         * @param string $newname New name of the Dataset
-        * @throws OMVModuleZFSException
+        * @return void
         * @access public
         */
        public function rename($newname) {
                $cmd = "zfs rename -p " . $this->name . " " . $newname . " 2>&1";
-               OMVUtil::exec($cmd,$out,$res);
+               $this->exec($cmd,$out,$res);
+               $this->name = $newname;
+       }
+
+       /**
+        * Clears a previously set proporty and specifies that it should be
+        * inherited from it's parent.
+        *
+        * @param string $property Name of the property to inherit.
+        * @return void
+        * @access public
+        */
+       public function inherit($property) {
+               $cmd = "zfs inherit " . $property . " " . $this->name . " 2>&1";
+               $this->exec($cmd,$out,$res);
+               $this->updateProperty($property);
+       }
+
+       /**
+        * Helper function to execute a command and throw an exception on error
+        * (requires stderr redirected to stdout for proper exception message).
+        *
+        * @param string $cmd Command to execute
+        * @param array &$out If provided will contain output in an array
+        * @param int &$res If provided will contain Exit status of the command
+        * @return string Last line of output when executing the command
+        * @throws OMVModuleZFSException
+        * @access private
+        */
+       private function exec($cmd, &$out = null, &$res = null) {
+               $tmp = OMVUtil::exec($cmd, $out, $res);
                if ($res) {
                        throw new OMVModuleZFSException(implode("\n", $out));
                }
-               $this->name = $newname;
+               return $tmp;
        }
 
 }