function get_instance_util_data($game)
{
define('TTL', 30 * 60);
//cache expiry time for apc is 30min
$key = "instance_util_data_{$game}";
$instances_obj = apc_fetch($key, $success);
if ($success) {
return $instances_obj;
} else {
$instance_util_obj = new InstanceUtilAdapter($game);
$instances_obj = array("instances" => $instance_util_obj->get_instances_detail_data(), "total" => $instance_util_obj->get_game_summary(), "dau" => $instance_util_obj->get_dau());
apc_add($key, $instances_obj, TTL);
return $instances_obj;
}
}
public function computeSlack($values)
{
include_once "../report/instance-util-adapter.php";
include_once "../report/report-collector.php";
$return_array = $this->parse_inputs_computeSlack($values);
if (!$return_array) {
return false;
}
$game = $return_array['game_name'];
if (!in_array($game, $this->server_cfg['game_list'])) {
$this->status = 5;
return false;
}
$dataArr = array();
$slack_now = $return_array['slack_now'];
$instance_util_obj = new InstanceUtilAdapter($game, $slack_now);
$instances = $instance_util_obj->get_instances_breakup_data();
$dau = $instance_util_obj->get_dau();
// $class_data = $instances["web"];
$pool_slack = array();
foreach ($instances as $class => $class_data) {
foreach ($class_data as $pool => $data) {
if ($data["count"] == null || $data["count"] == 0) {
//if instance count is 0, don't show in report
continue;
}
$dau_per_instance = round($dau / $data["count"]);
$util = $this->get_util($data["util"]);
$bottleneck = $data["util"]["bottleneck_key"];
$underutilized = $data["util"]["underutil_key"];
if ($bottleneck == "") {
$bottleneck = "-";
}
if ($underutilized == "") {
$underutilized = "-";
}
if ($util == NA) {
$optimal_count = NA;
$optimal_cost = NA;
$optimal_cost_year = NA;
$slack = NA;
$headroom = NA;
} else {
$optimal_count = $data["optimal_instance_count"];
$optimal_count_factor = $data["optimal_count_factor"];
$optimal_cost = number_format($data["optimal_cost"]);
$optimal_cost_year = number_format($data["optimal_cost"] * 30 * 365);
$slack = number_format(($data["count"] - $data["optimal_instance_count"]) * 100 / $data["count"], 2, '.', '') . "%";
$headroom = $this->get_headroom($data["util"]["utilization"]) . "%";
}
$pool_slack[$pool]["slack"] = $slack;
$pool_slack[$pool]["count"] = $data["count"];
$pool_slack[$pool]["optimal_instance_count"] = $optimal_count;
$pool_slack[$pool]["optimal_count_factor"] = $optimal_count_factor;
}
}
$pool_slack = json_encode($pool_slack);
echo $pool_slack . "\n";
$this->status = 6;
}
