예제 #1
0
파일: networks.go 프로젝트: vahe/lxd
func doNetworkGet(d *Daemon, name string) (shared.NetworkConfig, error) {
	// Get some information
	osInfo, _ := net.InterfaceByName(name)
	_, dbInfo, _ := dbNetworkGet(d.db, name)

	// Sanity check
	if osInfo == nil && dbInfo == nil {
		return shared.NetworkConfig{}, os.ErrNotExist
	}

	// Prepare the response
	n := shared.NetworkConfig{}
	n.Name = name
	n.UsedBy = []string{}
	n.Config = map[string]string{}

	// Look for containers using the interface
	cts, err := dbContainersList(d.db, cTypeRegular)
	if err != nil {
		return shared.NetworkConfig{}, err
	}

	for _, ct := range cts {
		c, err := containerLoadByName(d, ct)
		if err != nil {
			return shared.NetworkConfig{}, err
		}

		if networkIsInUse(c, n.Name) {
			n.UsedBy = append(n.UsedBy, fmt.Sprintf("/%s/containers/%s", shared.APIVersion, ct))
		}
	}

	// Set the device type as needed
	if osInfo != nil && shared.IsLoopback(osInfo) {
		n.Type = "loopback"
	} else if dbInfo != nil || shared.PathExists(fmt.Sprintf("/sys/class/net/%s/bridge", n.Name)) {
		if dbInfo != nil {
			n.Managed = true
			n.Config = dbInfo.Config
		}

		n.Type = "bridge"
	} else if shared.PathExists(fmt.Sprintf("/sys/class/net/%s/device", n.Name)) {
		n.Type = "physical"
	} else if shared.PathExists(fmt.Sprintf("/sys/class/net/%s/bonding", n.Name)) {
		n.Type = "bond"
	} else {
		_, err := exec.Command("ovs-vsctl", "br-exists", n.Name).CombinedOutput()
		if err == nil {
			n.Type = "bridge"
		} else {
			n.Type = "unknown"
		}
	}

	return n, nil
}
예제 #2
0
파일: networks.go 프로젝트: vahe/lxd
func networkPatch(d *Daemon, r *http.Request) Response {
	name := mux.Vars(r)["name"]

	// Get the existing network
	_, dbInfo, err := dbNetworkGet(d.db, name)
	if dbInfo != nil {
		return SmartError(err)
	}

	// Validate the ETag
	etag := []interface{}{dbInfo.Name, dbInfo.Managed, dbInfo.Type, dbInfo.Config}

	err = etagCheck(r, etag)
	if err != nil {
		return PreconditionFailed(err)
	}

	req := shared.NetworkConfig{}
	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		return BadRequest(err)
	}

	// Config stacking
	if req.Config == nil {
		req.Config = map[string]string{}
	}

	for k, v := range dbInfo.Config {
		_, ok := req.Config[k]
		if !ok {
			req.Config[k] = v
		}
	}

	return doNetworkUpdate(d, name, dbInfo.Config, req.Config)
}
예제 #3
0
파일: networks.go 프로젝트: vahe/lxd
func networksPost(d *Daemon, r *http.Request) Response {
	req := shared.NetworkConfig{}

	// Parse the request
	err := json.NewDecoder(r.Body).Decode(&req)
	if err != nil {
		return BadRequest(err)
	}

	// Sanity checks
	if req.Name == "" {
		return BadRequest(fmt.Errorf("No name provided"))
	}

	err = networkValidName(req.Name)
	if err != nil {
		return BadRequest(err)
	}

	if req.Type != "" && req.Type != "bridge" {
		return BadRequest(fmt.Errorf("Only 'bridge' type networks can be created"))
	}

	networks, err := networkGetInterfaces(d)
	if err != nil {
		return InternalError(err)
	}

	if shared.StringInSlice(req.Name, networks) {
		return BadRequest(fmt.Errorf("The network already exists"))
	}

	if req.Config == nil {
		req.Config = map[string]string{}
	}

	err = networkValidateConfig(req.Name, req.Config)
	if err != nil {
		return BadRequest(err)
	}

	// Set some default values where needed
	if req.Config["bridge.mode"] == "fan" {
		if req.Config["fan.underlay_subnet"] == "" {
			req.Config["fan.underlay_subnet"] = "auto"
		}
	} else {
		if req.Config["ipv4.address"] == "" {
			req.Config["ipv4.address"] = "auto"
		}
		if req.Config["ipv4.address"] == "auto" && req.Config["ipv4.nat"] == "" {
			req.Config["ipv4.nat"] = "true"
		}

		if req.Config["ipv6.address"] == "" {
			content, err := ioutil.ReadFile("/proc/sys/net/ipv6/conf/default/disable_ipv6")
			if err == nil && string(content) == "0\n" {
				req.Config["ipv6.address"] = "auto"
			}
		}
		if req.Config["ipv6.address"] == "auto" && req.Config["ipv6.nat"] == "" {
			req.Config["ipv6.nat"] = "true"
		}
	}

	// Replace "auto" by actual values
	err = networkFillAuto(req.Config)
	if err != nil {
		return InternalError(err)
	}

	// Create the database entry
	_, err = dbNetworkCreate(d.db, req.Name, req.Config)
	if err != nil {
		return InternalError(
			fmt.Errorf("Error inserting %s into database: %s", req.Name, err))
	}

	// Start the network
	n, err := networkLoadByName(d, req.Name)
	if err != nil {
		return InternalError(err)
	}

	err = n.Start()
	if err != nil {
		n.Delete()
		return InternalError(err)
	}

	return SyncResponseLocation(true, nil, fmt.Sprintf("/%s/networks/%s", shared.APIVersion, req.Name))
}