func lockNode(nodeId uuid.UUID, hostname string, operation string) (*lock.AppLock, error) {
//lock the node
locks := make(map[uuid.UUID]string)
if nodeId.IsZero() {
//Generate temporary UUID from hostname for the node
//for locking as the UUID is not available at this point
id, err := uuid.Parse(util.Md5FromString(hostname))
if err != nil {
logger.Get().Error(fmt.Sprintf("Unable to create the UUID for locking for host: %s:", hostname), err)
return nil, err
}
nodeId = *id
}
locks[nodeId] = fmt.Sprintf("%s : %s", operation, hostname)
appLock := lock.NewAppLock(locks)
if err := GetApp().GetLockManager().AcquireLock(*appLock); err != nil {
return nil, err
}
return appLock, nil
}
func (a *App) RouteProviderBasedMonitoring(cluster_id uuid.UUID) {
provider := a.getProviderFromClusterId(cluster_id)
if provider == nil {
logger.Get().Warning("Faield to get provider for cluster: %v", cluster_id)
return
}
var result models.RpcResponse
vars := make(map[string]string)
vars["cluster-id"] = cluster_id.String()
err = provider.Client.Call(fmt.Sprintf("%s.%s",
provider.Name, "MonitorCluster"),
models.RpcRequest{RpcRequestVars: vars, RpcRequestData: []byte{}},
&result)
if err != nil || result.Status.StatusCode != http.StatusOK {
logger.Get().Error("Monitoring by Provider: %s failed. Reason :%s", provider.Name, err)
return
}
return
}