Merge branch 'develop' of https://github.com/manzerbredes/istic-openstack into develop

1 files changed, 97 insertions, 0 deletions

diff --git a/server/vendor/php-opencloud/common/src/Common/Resource/Iterator.php b/server/vendor/php-opencloud/common/src/Common/Resource/Iterator.php
new file mode 100644
index 0000000..63d4455
--- /dev/null
+++ b/server/vendor/php-opencloud/common/src/Common/Resource/Iterator.php
@@ -0,0 +1,97 @@
+<?php
+
+namespace OpenCloud\Common\Resource;
+
+use OpenCloud\Common\Transport\Utils;
+
+class Iterator
+{
+    private $requestFn;
+    private $resourceFn;
+    private $limit;
+    private $count;
+    private $resourcesKey;
+    private $markerKey;
+    private $mapFn;
+    private $currentMarker;
+
+    public function __construct(array $options, callable $requestFn, callable $resourceFn)
+    {
+        $this->limit = isset($options['limit']) ? $options['limit'] : false;
+        $this->count = 0;
+
+        if (isset($options['resourcesKey'])) {
+            $this->resourcesKey = $options['resourcesKey'];
+        }
+
+        if (isset($options['markerKey'])) {
+            $this->markerKey = $options['markerKey'];
+        }
+
+        if (isset($options['mapFn']) && is_callable($options['mapFn'])) {
+            $this->mapFn = $options['mapFn'];
+        }
+
+        $this->requestFn  = $requestFn;
+        $this->resourceFn = $resourceFn;
+    }
+
+    private function fetchResources()
+    {
+        if ($this->shouldNotSendAnotherRequest()) {
+            return false;
+        }
+
+        $response = call_user_func($this->requestFn, $this->currentMarker);
+
+        $json = Utils::flattenJson(Utils::jsonDecode($response), $this->resourcesKey);
+
+        if ($response->getStatusCode() === 204 || empty($json)) {
+            return false;
+        }
+
+        return $json;
+    }
+
+    private function assembleResource(array $data)
+    {
+        $resource = call_user_func($this->resourceFn, $data);
+
+        // Invoke user-provided fn if provided
+        if ($this->mapFn) {
+            call_user_func_array($this->mapFn, [&$resource]);
+        }
+
+        // Update marker if operation supports it
+        if ($this->markerKey) {
+            $this->currentMarker = $resource->{$this->markerKey};
+        }
+
+        return $resource;
+    }
+
+    private function totalReached()
+    {
+        return $this->limit && $this->count >= $this->limit;
+    }
+
+    private function shouldNotSendAnotherRequest()
+    {
+        return $this->totalReached() || ($this->count > 0 && !$this->markerKey);
+    }
+
+    public function __invoke()
+    {
+        while ($resources = $this->fetchResources()) {
+            foreach ($resources as $resourceData) {
+                if ($this->totalReached()) {
+                    break;
+                }
+
+                $this->count++;
+
+                yield $this->assembleResource($resourceData);
+            }
+        }
+    }
+}