public function onFarmSave(DBFarm $dbFarm, DBFarmRole $dbFarmRole)
{
try {
$account = Scalr_Account::init()->loadById($dbFarm->ClientID);
if (!$account->isFeatureEnabled(Scalr_Limits::FEATURE_CHEF)) {
$dbFarmRole->ClearSettings("chef.");
return false;
}
$db = Core::GetDBInstance();
$runListId = $dbFarmRole->GetSetting(self::ROLE_CHEF_RUNLIST_ID);
$attributes = $dbFarmRole->GetSetting(self::ROLE_CHEF_ATTRIBUTES);
$checksum = $dbFarmRole->GetSetting(self::ROLE_CHEF_CHECKSUM);
$chefRoleName = $dbFarmRole->GetSetting(self::ROLE_CHEF_ROLE_NAME);
$chefServerId = $dbFarmRole->GetSetting(self::ROLE_CHEF_SERVER_ID);
// Need to remove chef role if chef was disabled for current farmrole
if (!$runListId && $chefRoleName) {
$this->removeChefRole($chefServerId, $chefRoleName);
$dbFarmRole->ClearSettings("chef.");
return true;
}
if ($runListId) {
$runListInfo = $this->db->GetRow("SELECT chef_server_id, runlist FROM services_chef_runlists WHERE id=?", array($runListId));
$newChefServerId = $runListInfo['chef_server_id'];
if ($newChefServerId != $chefServerId && $chefServerId) {
// Remove role from old server
$this->removeChefRole($chefServerId, $chefRoleName);
$createNew = true;
}
if (!$chefServerId) {
$createNew = true;
}
$chefServerInfo = $this->db->GetRow("SELECT * FROM services_chef_servers WHERE id=?", array($runListInfo['chef_server_id']));
$chefServerInfo['auth_key'] = $this->getCrypto()->decrypt($chefServerInfo['auth_key'], $this->cryptoKey);
$chefClient = Scalr_Service_Chef_Client::getChef($chefServerInfo['url'], $chefServerInfo['username'], trim($chefServerInfo['auth_key']));
$roleName = "scalr-{$dbFarmRole->ID}";
$setSettings = false;
if ($createNew) {
$chefClient->createRole($roleName, $roleName, json_decode($runListInfo['runlist']), json_decode($attributes), $runListInfo['chef_environment']);
$setSettings = true;
} else {
if ($dbFarmRole->GetSetting(self::ROLE_CHEF_CHECKSUM) != md5("{$runListInfo['runlist']}.{$attributes}")) {
$chefClient->updateRole($roleName, $roleName, json_decode($runListInfo['runlist']), json_decode($attributes), $runListInfo['chef_environment']);
$setSettings = true;
}
}
if ($setSettings) {
$dbFarmRole->SetSetting(self::ROLE_CHEF_ROLE_NAME, $roleName);
$dbFarmRole->SetSetting(self::ROLE_CHEF_SERVER_ID, $runListInfo['chef_server_id']);
$dbFarmRole->SetSetting(self::ROLE_CHEF_CHECKSUM, md5("{$runListInfo['runlist']}.{$attributes}"));
}
}
} catch (Exception $e) {
throw new Exception("Chef settings error: {$e->getMessage()} ({$e->getTraceAsString()})");
}
}
public static function farmUpdateRoleSettings(DBFarmRole $DBFarmRole, $oldSettings, $newSettings)
{
try {
$DBFarm = $DBFarmRole->GetFarmObject();
$Client = Client::Load($DBFarm->ClientID);
$AmazonELB = Scalr_Service_Cloud_Aws::newElb($DBFarmRole->CloudLocation, $DBFarm->GetEnvironmentObject()->getPlatformConfigValue(Modules_Platforms_Ec2::ACCESS_KEY), $DBFarm->GetEnvironmentObject()->getPlatformConfigValue(Modules_Platforms_Ec2::SECRET_KEY));
// Load balancer settings
if ($newSettings[DBFarmRole::SETTING_BALANCING_USE_ELB] == 1) {
// Listeners
$DBFarmRole->ClearSettings("lb.role.listener");
$ELBListenersList = new ELBListenersList();
$li = 0;
foreach ($newSettings as $sk => $sv) {
if (stristr($sk, "lb.role.listener")) {
$li++;
$listener_chunks = explode("#", $sv);
$ELBListenersList->AddListener($listener_chunks[0], $listener_chunks[1], $listener_chunks[2], $listener_chunks[3]);
$DBFarmRole->SetSetting("lb.role.listener.{$li}", $sv);
}
}
$avail_zones = array();
$avail_zones_setting_hash = "";
foreach ($newSettings as $skey => $sval) {
if (preg_match("/^lb.avail_zone.(.*)?\$/", $skey, $macthes)) {
if ($macthes[1] != 'hash' && $macthes[1] != '.hash') {
if ($sval == 1) {
array_push($avail_zones, $macthes[1]);
}
$avail_zones_setting_hash .= "[{$macthes[1]}:{$sval}]";
}
}
}
if (!$DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_HOSTNAME)) {
$elb_name = sprintf("scalr-%s-%s", $DBFarm->Hash, rand(100, 999));
//CREATE NEW ELB
$elb_dns_name = $AmazonELB->CreateLoadBalancer($elb_name, $avail_zones, $ELBListenersList);
if ($elb_dns_name) {
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_HOSTNAME, $elb_dns_name);
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_NAME, $elb_name);
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_AZ_HASH, $avail_zones_setting_hash);
$register_servers = true;
}
}
if ($DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_NAME)) {
$ELBHealthCheckType = new ELBHealthCheckType($newSettings[DBFarmRole::SETTING_BALANCING_HC_TARGET], $newSettings[DBFarmRole::SETTING_BALANCING_HC_HTH], $newSettings[DBFarmRole::SETTING_BALANCING_HC_INTERVAL], $newSettings[DBFarmRole::SETTING_BALANCING_HC_TIMEOUT], $newSettings[DBFarmRole::SETTING_BALANCING_HC_UTH]);
$hash = md5(serialize($ELBHealthCheckType));
if ($elb_name || $hash != $DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_HC_HASH)) {
//UPDATE CURRENT ELB
$AmazonELB->ConfigureHealthCheck($DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_NAME), $ELBHealthCheckType);
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_HC_HASH, $hash);
}
// Configure AVAIL zones for the LB
if (!$elb_name && $avail_zones_setting_hash != $DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_AZ_HASH)) {
$info = $AmazonELB->DescribeLoadBalancers(array($DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_NAME)));
$elb = $info->DescribeLoadBalancersResult->LoadBalancerDescriptions->member;
$c = (array) $elb->AvailabilityZones;
if (!is_array($c['member'])) {
$c_zones = array($c['member']);
} else {
$c_zones = $c['member'];
}
$add_avail_zones = array();
$rem_avail_zones = array();
foreach ($newSettings as $skey => $sval) {
if (preg_match("/^lb.avail_zone.(.*)?\$/", $skey, $m)) {
if ($sval == 1 && !in_array($m[1], $c_zones)) {
array_push($add_avail_zones, $m[1]);
}
if ($sval == 0 && in_array($m[1], $c_zones)) {
array_push($rem_avail_zones, $m[1]);
}
}
}
if (count($add_avail_zones) > 0) {
$AmazonELB->EnableAvailabilityZonesForLoadBalancer($DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_NAME), $add_avail_zones);
}
if (count($rem_avail_zones) > 0) {
$AmazonELB->DisableAvailabilityZonesForLoadBalancer($DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_NAME), $rem_avail_zones);
}
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_AZ_HASH, $avail_zones_setting_hash);
}
}
if ($register_servers) {
$servers = $DBFarmRole->GetServersByFilter(array('status' => SERVER_STATUS::RUNNING));
$instances = array();
foreach ($servers as $DBServer) {
$instances[] = $DBServer->GetProperty(EC2_SERVER_PROPERTIES::INSTANCE_ID);
}
if (count($instances) > 0) {
$AmazonELB->RegisterInstancesWithLoadBalancer($DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_NAME), $instances);
}
}
} else {
if ($oldSettings[DBFarmRole::SETTING_BALANCING_HOSTNAME]) {
try {
$AmazonELB->DeleteLoadBalancer($DBFarmRole->GetSetting(DBFarmRole::SETTING_BALANCING_NAME));
} catch (Exception $e) {
}
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_NAME, "");
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_HOSTNAME, "");
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_USE_ELB, "0");
$DBFarmRole->SetSetting(DBFarmRole::SETTING_BALANCING_HC_HASH, "");
$DBFarmRole->ClearSettings("lb.avail_zone");
$DBFarmRole->ClearSettings("lb.healthcheck");
$DBFarmRole->ClearSettings("lb.role.listener");
}
}
} catch (Exception $e) {
throw new Exception("Error with ELB on Role '{$DBFarmRole->GetRoleObject()->name}': {$e->getMessage()}");
}
}
