Fixes #51

Implements JobQueue draft. Maybe some minor bugs existing and the
callback may need some reworking.

Stdlib/Queue/PriorityQueue.php

@@ -66,14 +66,14 @@ class PriorityQueue implements \Countable, \Serializable
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function insert($data, float $priority = 0.0) : int
+    public function insert($data, float $priority = 1.0) : int
     {
         do {
             $key = rand();
         } while (array_key_exists($key, $this->queue));
 
         if ($this->count === 0) {
-            $this->queue[$key] = ['key' => $key, 'data' => $data, 'priority' => $priority];
+            $this->queue[$key] = ['key' => $key, 'job' => $job, 'priority' => $priority];
         } else {
             $pos = 0;
             foreach ($this->queue as $ele) {
@@ -84,7 +84,7 @@ class PriorityQueue implements \Countable, \Serializable
                 $pos++;
             }
 
-            array_splice($original, $pos, 0, [$key => ['key' => $key, 'data' => $data, 'priority' => $priority]]);
+            array_splice($original, $pos, 0, [$key => ['key' => $key, 'job' => $job, 'priority' => $priority]]);
         }
 
         return $key;
@@ -100,7 +100,7 @@ class PriorityQueue implements \Countable, \Serializable
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function increaseAll(float $increase)
+    public function increaseAll(float $increase = 0.1)
     {
         foreach ($this->queue as $key => &$ele) {
             $ele['priority'] += $increase;
@@ -115,10 +115,9 @@ class PriorityQueue implements \Countable, \Serializable
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    public function get()
+    public function pop()
     {
-        $ele                      = array_pop($this->queue);
-        $this->queue[$ele['key']] = $ele;
+        return array_pop($this->queue);
     }
 
     /**

Utils/JobQueue/Job.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ }
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+namespace phpOMS\Utils\JobQueue;
+
+/**
+ * Array utils.
+ *
+ * @category   Framework
+ * @package    phpOMS\Utils
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @license    OMS License 1.0
+ * @link       http://orange-management.com
+ * @since      1.0.0
+ */
+class Job
+{
+	private $priority = 0.0;
+	private $callback = null;
+
+	public function __construct($callback, float $priority = 0.0) {
+		$this->priority = $priority;
+		$this->callback = $callback;
+	}
+
+	public function execute() {
+		$this->callback();
+	}
+
+	public function getPriority() : float {
+		return $this->priority;
+	}
+
+	public function setPriority(float $priority) {
+		$this->priority = $priority;
+	}
+}

Utils/JobQueue/JobQueue.php

@@ -0,0 +1,135 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+namespace phpOMS\Utils\JobQueue;
+
+use \phpOMS\Stdlib\Queue\PriorityQueue;
+
+/**
+ * Array utils.
+ *
+ * @category   Framework
+ * @package    phpOMS\Utils
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @license    OMS License 1.0
+ * @link       http://orange-management.com
+ * @since      1.0.0
+ */
+class JobQueue
+{
+	private $queue = null;
+	private $run = true;
+	private $suspended = false;
+	private $isTerminating = true;
+	private $isDeamonized;
+
+	public function __construct() {
+		$this->queue = new PriorityQueue();
+	}
+
+	public function dispatch(Job $job) {
+		$this->queue->insert($job, $job->getPriority());
+	}
+
+	public function run() {
+		$this->run = true;
+		$this->suspended = false;
+
+		if($this->isDeamonized) {
+			if($pid = pcntl_fork()) {
+				return $pid;
+			}
+
+			$this->runAsDeamon();
+
+			if (posix_setsid() < 0 || $pid = pcntl_fork()) {
+            	return;
+			}
+		}
+
+		while($this->run) {
+			while(!$this->suspended) 
+				if($this->deamonized) {
+					// todo: see if still unsuspended and still running (db, file etc)
+				}
+
+				$job = $this->queue->pop();
+
+				$this->queue->increaseAll();
+				$job['job']->execute();	
+
+				if($this->isTerminating && $this->queue->count() < 1) {
+					$this->suspended = true;
+					$this->run = false;
+				}	
+
+				sleep(1);
+			}
+
+			sleep(1);
+		}
+	}
+
+	public function setRunning(bool $run = true) {
+		$this->run = $run;
+		$this->suspended = $run;
+	}
+
+	public function isRunning() : bool {
+		return $this->run;
+	}
+
+	public function setSuspended(bool $suspended = true) {
+		$this->suspended = $suspended;
+	}
+
+	public function isSuspended() : bool {
+		return $this->suspended;
+	}
+
+	public function isTerminating() : bool {
+		return $this->isTerminating;
+	}
+
+	public function setTerminating(bool $terminating = true) {
+		$this->isTerminating = $terminating;
+	}
+
+	public function isDeamonized() : bool {
+		return $this->isDeamonized;
+	}
+
+	public function setDeamonized(bool $deamonized) {
+		$this->isDeamonized = $deamonized;
+	}
+
+	private function runAsDeamon() {
+		ob_end_clean();
+        fclose(STDIN);
+        fclose(STDOUT);
+        fclose(STDERR);
+
+        function shutdown() { 
+            posix_kill(posix_getpid(), SIGHUP); 
+        } 
+
+        register_shutdown_function('shutdown'); 
+	}
+
+	private function savePid() {
+		// todo: save pid somewhere for kill
+	}
+}