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-rw-r--r--library/Businessprocess/Simulation.php185
1 files changed, 185 insertions, 0 deletions
diff --git a/library/Businessprocess/Simulation.php b/library/Businessprocess/Simulation.php
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+++ b/library/Businessprocess/Simulation.php
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+<?php
+
+namespace Icinga\Module\Businessprocess;
+
+use Icinga\Exception\ProgrammingError;
+use Icinga\Web\Session\SessionNamespace;
+
+class Simulation
+{
+ const DEFAULT_SESSION_KEY = 'bp-simulations';
+
+ /**
+ * @var SessionNamespace
+ */
+ protected $session;
+
+ /**
+ * @var string
+ */
+ protected $sessionKey;
+
+ /**
+ * @var array
+ */
+ protected $simulations = array();
+
+ /**
+ * Simulation constructor.
+ * @param array $simulations
+ */
+ public function __construct(array $simulations = array())
+ {
+ $this->simulations = $simulations;
+ }
+
+ /**
+ * @param array $simulations
+ * @return static
+ */
+ public static function create(array $simulations = array())
+ {
+ return new static($simulations);
+ }
+
+ /**
+ * @param SessionNamespace $session
+ * @param null $sessionKey
+ * @return $this
+ */
+ public static function fromSession(SessionNamespace $session, $sessionKey = null)
+ {
+ return static::create()
+ ->setSessionKey($sessionKey)
+ ->persistToSession($session);
+ }
+
+ /**
+ * @param string $key
+ * @return $this
+ */
+ public function setSessionKey($key = null)
+ {
+ if ($key === null) {
+ $this->sessionKey = Simulation::DEFAULT_SESSION_KEY;
+ } else {
+ $this->sessionKey = $key;
+ }
+
+ return $this;
+ }
+
+ /**
+ * @param SessionNamespace $session
+ * @return $this
+ */
+ public function persistToSession(SessionNamespace $session)
+ {
+ $this->session = $session;
+ $this->simulations = $this->session->get($this->sessionKey, array());
+ return $this;
+ }
+
+ /**
+ * @return array
+ */
+ public function simulations()
+ {
+ return $this->simulations;
+ }
+
+ /**
+ * @param $simulations
+ * @return $this
+ */
+ protected function setSimulations($simulations)
+ {
+ $this->simulations = $simulations;
+ if ($this->session !== null) {
+ $this->session->set($this->sessionKey, $simulations);
+ }
+
+ return $this;
+ }
+
+ /**
+ * @return $this
+ */
+ public function clear()
+ {
+ $this->simulations = array();
+ if ($this->session !== null) {
+ $this->session->set($this->sessionKey, array());
+ }
+
+ return $this;
+ }
+
+ /**
+ * @return int
+ */
+ public function count()
+ {
+ return count($this->simulations());
+ }
+
+ /**
+ * @return bool
+ */
+ public function isEmpty()
+ {
+ return $this->count() === 0;
+ }
+
+ /**
+ * @param $node
+ * @param $properties
+ */
+ public function set($node, $properties)
+ {
+ $simulations = $this->simulations();
+ $simulations[$node] = $properties;
+ $this->setSimulations($simulations);
+ }
+
+ /**
+ * @param $name
+ * @return bool
+ */
+ public function hasNode($name)
+ {
+ $simulations = $this->simulations();
+ return array_key_exists($name, $simulations);
+ }
+
+ /**
+ * @param $name
+ * @return mixed
+ * @throws ProgrammingError
+ */
+ public function getNode($name)
+ {
+ $simulations = $this->simulations();
+ if (! array_key_exists($name, $simulations)) {
+ throw new ProgrammingError('Trying to access invalid node %s', $name);
+ }
+ return $simulations[$name];
+ }
+
+ /**
+ * @param $node
+ * @return bool
+ */
+ public function remove($node)
+ {
+ $simulations = $this->simulations();
+ if (array_key_exists($node, $simulations)) {
+ unset($simulations[$node]);
+ $this->setSimulations($simulations);
+
+ return true;
+ } else {
+ return false;
+ }
+ }
+}