Scalr\Modules\Platforms\Openstack\OpenstackPlatformModule::getInstanceTypes PHP Method

    public function getInstanceTypes(\Scalr_Environment $env = null, $cloudLocation = null, $details = false)
    {
        if (!$env instanceof \Scalr_Environment || empty($cloudLocation)) {
            throw new \InvalidArgumentException(sprintf("Method %s requires both environment object and cloudLocation to be specified.", __METHOD__));
        }
        $ret = [];
        $detailed = [];
        //Trying to retrieve instance types from the cache
        $url = $env->keychain($this->platform)->properties[Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL];
        $collection = $this->getCachedInstanceTypes($this->platform, $url, $cloudLocation);
        if ($collection === false || $collection->count() == 0) {
            //No cache. Fetching data from the cloud
            $client = $env->openstack($this->platform, $cloudLocation);
            $flavors = $client->servers->listFlavors();
            foreach ($flavors as $flavor) {
                $detailed[(string) $flavor->id] = array('name' => (string) $flavor->name, 'ram' => (string) $flavor->ram, 'vcpus' => (string) $flavor->vcpus, 'disk' => (string) $flavor->disk, 'type' => 'HDD');
                if (!$details) {
                    $ret[(string) $flavor->id] = (string) $flavor->name;
                } else {
                    $ret[(string) $flavor->id] = $detailed[(string) $flavor->id];
                }
            }
            //Refreshes/creates a cache
            CloudLocation::updateInstanceTypes($this->platform, $url, $cloudLocation, $detailed);
        } else {
            //Takes data from cache
            foreach ($collection as $cloudInstanceType) {
                /* @var $cloudInstanceType \Scalr\Model\Entity\CloudInstanceType */
                if (!$details) {
                    $ret[$cloudInstanceType->instanceTypeId] = $cloudInstanceType->name;
                } else {
                    $ret[$cloudInstanceType->instanceTypeId] = $cloudInstanceType->getProperties();
                }
            }
        }
        return $ret;
    }