Scalr\Modules\Platforms\Cloudstack\CloudstackPlatformModule::getInstanceTypes PHP Method

    public function getInstanceTypes(Scalr_Environment $env = null, $cloudLocation = null, $details = false)
    {
        if (!$env instanceof Scalr_Environment) {
            throw new InvalidArgumentException(sprintf("Method %s requires environment to be specified.", __METHOD__));
        }
        $ret = [];
        $detailed = [];
        //Trying to retrieve instance types from the cache
        $url = $env->keychain($this->platform)->properties[Entity\CloudCredentialsProperty::CLOUDSTACK_API_URL];
        $collection = $this->getCachedInstanceTypes($this->platform, $url, $cloudLocation ?: '');
        if ($collection === false || $collection->count() == 0) {
            //No cache. Fetching data from the cloud
            $client = $env->cloudstack($this->platform);
            foreach ($client->listServiceOfferings() as $offering) {
                $detailed[(string) $offering->id] = array('name' => (string) $offering->name, 'ram' => (string) $offering->memory, 'vcpus' => (string) $offering->cpunumber, 'disk' => "", 'type' => strtoupper((string) $offering->storagetype));
                if (!$details) {
                    $ret[(string) $offering->id] = (string) $offering->name;
                } else {
                    $ret[(string) $offering->id] = $detailed[(string) $offering->id];
                }
            }
            //Refreshes/creates a cache
            CloudLocation::updateInstanceTypes($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;
    }