func (c *Resources) checkResources(cluster core.ClusterInterface, service framework.ServiceConfig) error {
requiredInstances, err := c.requiredInstances(cluster, service)
if err != nil {
return err
}
if requiredInstances == 0 {
return nil
}
slaves, err := cluster.Slaves()
if err != nil {
return err
}
allowedInstances := 0
for _, v := range slaves {
allowed := v.AllowedInstances(service.CPUShares, float64(service.Memory))
logger.Instance().Infof("Checking slave %s - Available CPU %f Mem %f - Allowed instances %d", v.Hostname, v.AvailableCpu(), v.AvailableMem(), allowed)
if allowed > 0 {
allowedInstances += allowed
}
}
if allowedInstances < requiredInstances {
return fmt.Errorf("Cluster %s doesn't have enough resources. It only accept %d instances.", cluster.Id(), allowedInstances)
}
logger.Instance().Infof("Checking Resources in cluster %s done", cluster.Id())
return nil
}