Example #1
0
//use for web API ,Best Not Use
func StartService(s *Service) error {
	swarm, err := swarmclient.NewSwarmClient()
	if err != nil {
		log.Errorf("service.StartService():%v\n", err)
		return err
	}
	for index := range s.ContainersIds {
		err_for := swarm.StartContainer(s.ContainersIds[index], nil)
		if err_for != nil {
			err = err_for
			log.Errorf("service.StartService():%v\n", err)
		}
	}
	return err
}
Example #2
0
func GetService(s *Service) (*ServiceInfo, error) {
	swarm, err := swarmclient.NewSwarmClient()
	if err != nil {
		return nil, err
	}
	containers, status := swarm.GetContainersInfo(s.ContainersIds)
	if status != 1 {
		err = fmt.Errorf("containers status is not good")
		log.Errorf("service.GetService():%s:%s", s.ServiceConfig.Metadata.Name, err)
	}
	si := &ServiceInfo{Service: *s,
		Status:     status,
		Containers: containers}
	return si, err
}
Example #3
0
func servicesWatcher(etcdPath string) error {
	log.Infoln("cli.servicesWatcher():Start servicesWatcher")
	heartbeat := time.Duration(HeartbeatSecond) * time.Second
	log.Debugf("cli.servicesWatcher(): heartbeat: %d second\n", HeartbeatSecond)
	etcd, err := etcdclient.NewEtcdClient(etcdPath)
	if err != nil {
		log.Fatalf("cli.servicesWatcher():%+v\n", err)
		return err
	}
	swarm, err := swarmclient.NewSwarmClient()
	if err != nil {
		log.Fatalf("cli.servicesWatcher():%+v\n", err)
		return err
	}
	go func() {
		for {
			// get services name from etcd
			servicesName, err := etcd.GetServices()
			log.Infof("cli.servicesWatcher(): Services: %+v\n", servicesName)
			fmt.Printf("[info]:manage: Services %+v\n", servicesName)
			if err != nil {
				time.Sleep(heartbeat)
				continue
			}
			for _, serviceName := range servicesName {
				//get service info with serviceName
				s, err := etcd.GetService(serviceName)
				if err != nil {
					log.Fatalf("cli.servicesWatcher():%+v\n", err)
				}

				//get containers info with containerIds
				containers, status := swarm.GetContainersInfo(s.ContainersIds)
				if status != 1 {
					// try to restart container , if it can't restart remove it
					status = swarm.ContainersHealthCheck(containers)
				}
				si := &service.ServiceInfo{Service: *s, Containers: containers, Status: status}

				service.ServicesInfo = append(service.ServicesInfo, *si)
				log.Debugf("cli.servicesWatcher(): %s info: %+v\n", serviceName, si)
			}
			time.Sleep(heartbeat)
		}
	}()
	return nil
}
Example #4
0
func DeleteService(s *Service) error {
	swarm, err := swarmclient.NewSwarmClient()
	if err != nil {
		return err
	}
	log.Debugf("service.DeleteService():containerIds:%v\n", s.ContainersIds)
	for index := range s.ContainersIds {
		if s.ServiceConfig.Metadata.Labels["type"] != "libvirt" {
			err := swarm.StopContainer(s.ContainersIds[index], 0)
			if err != nil {
				log.Errorf("service.DeleteService()::%v\n", err)
				fmt.Printf("[error]service.DeleteService():%+v\n", err)
			}
		}
		err = swarm.RemoveContainer(s.ContainersIds[index], true, false)
		if err != nil {
			log.Errorf("service.DeleteService()::%v\n", err)
			fmt.Printf("[error]service.DeleteService():%+v\n", err)
		}
	}
	return nil
}
Example #5
0
func CreateService(config *ServiceConfig) ([]string, error) {
	swarm, err := swarmclient.NewSwarmClient()
	if err != nil {
		log.Fatalf("service.CreateService():%s\n", err)
		return nil, err
	}

	containerIds := make([]string, 0)
	containerConfig := new(dockerclient.ContainerConfig)
	containerConfig.Image = config.Spec.Image
	containerConfig.Labels = config.Metadata.Labels
	portBindings := make(map[string][]dockerclient.PortBinding)
	containerConfig.Env = config.Spec.Selector
	containerConfig.Cmd = config.Spec.Cmd

	//exposed ports , so that others can't use
	if len(config.Spec.Ports) > 0 {
		ports := make(map[string]struct{})
		for index := range config.Spec.Ports {
			port := strconv.Itoa(config.Spec.Ports[index])
			ports[port] = struct{}{}
		}
		containerConfig.ExposedPorts = ports
	}

	// intit hostconfig. use host, create and start containers
	hostConfig := &dockerclient.HostConfig{}
	if config.Spec.Resources.NetworkMode != "" {
		hostConfig.NetworkMode = config.Spec.Resources.NetworkMode
	} else {
		hostConfig.NetworkMode = "host"
	}
	// use to filter Resources
	hostConfig.CpuShares = config.Spec.Resources.CpuShares
	hostConfig.CpusetCpus = config.Spec.Resources.CpusetCpus
	hostConfig.Memory = config.Spec.Resources.Memory
	hostConfig.MemorySwap = config.Spec.Resources.MemorySwap

	cpuQuota, err := strconv.Atoi(config.Spec.Resources.CpuQuota)
	if err != nil {
		hostConfig.CpuQuota = 0
	} else {
		hostConfig.CpuQuota = int64(cpuQuota)
	}

	// replicas
	numOfTimes := 0
	if config.Spec.Replicas > 0 {
		numOfTimes = config.Spec.Replicas
	} else if config.Spec.Replicas == 0 {
		numOfTimes = len(config.Spec.Ips)
		//****
		if len(config.Spec.Ports) == 0 {
			err := fmt.Errorf("service.CreateService():%+s Give ips but not give ports\n", config.Metadata.Name)
			log.Error(err)
			return nil, err
		}
	}

	for i := 0; i < numOfTimes; i++ {
		// use to filter specific ips and ports
		for _, port := range config.Spec.Ports {
			portbinding := &dockerclient.PortBinding{HostPort: strconv.Itoa(port)}
			if len(config.Spec.Ips) > 0 {
				portbinding.HostIp = config.Spec.Ips[i]
			}
			portBindings[strconv.Itoa(port)] = []dockerclient.PortBinding{*portbinding}
		}
		hostConfig.PortBindings = portBindings

		// hostconfig
		containerConfig.HostConfig = *hostConfig

		// give container different name
		containerName := config.Metadata.Name
		if role := config.Metadata.Labels["role"]; role != "" {
			containerName += "_" + role
		}
		containerName += strconv.Itoa(i)
		log.Debugf("service.CreateService():containerName:%s ; containerConfig:%+v\n", containerName, containerConfig)

		//create container
		containerId, err := swarm.CreateContainer(containerConfig, containerName)
		log.Debugf("service.CreateService():containerId:%s\n", containerId)
		if err != nil {
			log.Fatalf("service.CreateService():%s\n", err)
			fmt.Printf("[error]service.CreateService():%+v\n", err)
		}

		containerIds = append(containerIds, containerId)
		if config.Metadata.Labels["type"] != "libvirt" {
			//docker start container,libvirt do not need to start
			swarm.StartContainer(containerId, hostConfig)
			if err != nil {
				log.Fatalf("service.CreateService():%s\n", err)
				fmt.Printf("[error]service.CreateService():%+v\n", err)
				return nil, err
			}
		}
	}
	return containerIds, err
}