Wire network interface into libpod

Make use of the new network interface in libpod.

This commit contains several breaking changes:
- podman network create only outputs the new network name and not file
  path.
- podman network ls shows the network driver instead of the cni version
  and plugins.
- podman network inspect outputs the new network struct and not the cni
  conflist.
- The bindings and libpod api endpoints have been changed to use the new
  network structure.

The container network status is stored in a new field in the state. The
status should be received with the new `c.getNetworkStatus`. This will
migrate the old status to the new format. Therefore old containers should
contine to work correctly in all cases even when network connect/
disconnect is used.

New features:
- podman network reload keeps the ip and mac for more than one network.
- podman container restore keeps the ip and mac for more than one
  network.
- The network create compat endpoint can now use more than one ipam
  config.

The man pages and the swagger doc are updated to reflect the latest
changes.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

2 files changed, 64 insertions, 34 deletions

diff --git a/cmd/podman/networks/create.go b/cmd/podman/networks/create.go
index b5ddd215f..21d720f55 100644
--- a/cmd/podman/networks/create.go
+++ b/cmd/podman/networks/create.go
@@ -8,7 +8,8 @@ import (
 	"github.com/containers/podman/v3/cmd/podman/common"
 	"github.com/containers/podman/v3/cmd/podman/parse"
 	"github.com/containers/podman/v3/cmd/podman/registry"
-	"github.com/containers/podman/v3/libpod/define"
+	"github.com/containers/podman/v3/libpod/network/types"
+	"github.com/containers/podman/v3/libpod/network/util"
 	"github.com/containers/podman/v3/pkg/domain/entities"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -38,11 +39,11 @@ func networkCreateFlags(cmd *cobra.Command) {
 	flags := cmd.Flags()
 
 	driverFlagName := "driver"
-	flags.StringVarP(&networkCreateOptions.Driver, driverFlagName, "d", "bridge", "driver to manage the network")
+	flags.StringVarP(&networkCreateOptions.Driver, driverFlagName, "d", types.DefaultNetworkDriver, "driver to manage the network")
 	_ = cmd.RegisterFlagCompletionFunc(driverFlagName, common.AutocompleteNetworkDriver)
 
 	optFlagName := "opt"
-	flags.StringArrayVarP(&opts, optFlagName, "o", []string{}, "Set driver specific options (default [])")
+	flags.StringArrayVarP(&opts, optFlagName, "o", nil, "Set driver specific options (default [])")
 	_ = cmd.RegisterFlagCompletionFunc(optFlagName, completion.AutocompleteNone)
 
 	gatewayFlagName := "gateway"
@@ -55,6 +56,7 @@ func networkCreateFlags(cmd *cobra.Command) {
 	flags.IPNetVar(&networkCreateOptions.Range, ipRangeFlagName, net.IPNet{}, "allocate container IP from range")
 	_ = cmd.RegisterFlagCompletionFunc(ipRangeFlagName, completion.AutocompleteNone)
 
+	// TODO consider removing this for 4.0
 	macvlanFlagName := "macvlan"
 	flags.StringVar(&networkCreateOptions.MacVLAN, macvlanFlagName, "", "create a Macvlan connection based on this device")
 	// This option is deprecated
@@ -88,9 +90,6 @@ func networkCreate(cmd *cobra.Command, args []string) error {
 		name string
 	)
 	if len(args) > 0 {
-		if !define.NameRegex.MatchString(args[0]) {
-			return define.RegexError
-		}
 		name = args[0]
 	}
 	var err error
@@ -100,17 +99,60 @@ func networkCreate(cmd *cobra.Command, args []string) error {
 	}
 	networkCreateOptions.Options, err = parse.GetAllLabels([]string{}, opts)
 	if err != nil {
-		return errors.Wrapf(err, "unable to process options")
+		return errors.Wrapf(err, "unable to parse options")
+	}
+
+	network := types.Network{
+		Name:        name,
+		Driver:      networkCreateOptions.Driver,
+		Options:     networkCreateOptions.Options,
+		Labels:      networkCreateOptions.Labels,
+		IPv6Enabled: networkCreateOptions.IPv6,
+		DNSEnabled:  !networkCreateOptions.DisableDNS,
+		Internal:    networkCreateOptions.Internal,
 	}
 
+	// old --macvlan option
 	if networkCreateOptions.MacVLAN != "" {
 		logrus.Warn("The --macvlan option is deprecated, use `--driver macvlan --opt parent=<device>` instead")
+		network.Driver = types.MacVLANNetworkDriver
+		network.NetworkInterface = networkCreateOptions.MacVLAN
+	} else if networkCreateOptions.Driver == types.MacVLANNetworkDriver {
+		// new -d macvlan --opt parent=... syntax
+		if parent, ok := network.Options["parent"]; ok {
+			network.NetworkInterface = parent
+			delete(network.Options, "parent")
+		}
+	}
+
+	if networkCreateOptions.Subnet.IP != nil {
+		s := types.Subnet{
+			Subnet:  types.IPNet{IPNet: networkCreateOptions.Subnet},
+			Gateway: networkCreateOptions.Gateway,
+		}
+		if networkCreateOptions.Range.IP != nil {
+			startIP, err := util.FirstIPInSubnet(&networkCreateOptions.Range)
+			if err != nil {
+				return errors.Wrap(err, "failed to get first ip in range")
+			}
+			lastIP, err := util.LastIPInSubnet(&networkCreateOptions.Range)
+			if err != nil {
+				return errors.Wrap(err, "failed to get last ip in range")
+			}
+			s.LeaseRange = &types.LeaseRange{
+				StartIP: startIP,
+				EndIP:   lastIP,
+			}
+		}
+		network.Subnets = append(network.Subnets, s)
+	} else if networkCreateOptions.Range.IP != nil || networkCreateOptions.Gateway != nil {
+		return errors.New("cannot set gateway or range without subnet")
 	}
 
-	response, err := registry.ContainerEngine().NetworkCreate(registry.Context(), name, networkCreateOptions)
+	response, err := registry.ContainerEngine().NetworkCreate(registry.Context(), network)
 	if err != nil {
 		return err
 	}
-	fmt.Println(response.Filename)
+	fmt.Println(response.Name)
 	return nil
 }
diff --git a/cmd/podman/networks/list.go b/cmd/podman/networks/list.go
index 0ac637ea5..124a17d5d 100644
--- a/cmd/podman/networks/list.go
+++ b/cmd/podman/networks/list.go
@@ -10,8 +10,8 @@ import (
 	"github.com/containers/podman/v3/cmd/podman/common"
 	"github.com/containers/podman/v3/cmd/podman/registry"
 	"github.com/containers/podman/v3/cmd/podman/validate"
+	"github.com/containers/podman/v3/libpod/network/types"
 	"github.com/containers/podman/v3/pkg/domain/entities"
-	"github.com/containers/podman/v3/pkg/network"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -90,13 +90,13 @@ func networkList(cmd *cobra.Command, args []string) error {
 	return err
 }
 
-func quietOut(responses []*entities.NetworkListReport) {
+func quietOut(responses []types.Network) {
 	for _, r := range responses {
 		fmt.Println(r.Name)
 	}
 }
 
-func jsonOut(responses []*entities.NetworkListReport) error {
+func jsonOut(responses []types.Network) error {
 	prettyJSON, err := json.MarshalIndent(responses, "", "  ")
 	if err != nil {
 		return err
@@ -105,7 +105,7 @@ func jsonOut(responses []*entities.NetworkListReport) error {
 	return nil
 }
 
-func templateOut(responses []*entities.NetworkListReport, cmd *cobra.Command) error {
+func templateOut(responses []types.Network, cmd *cobra.Command) error {
 	nlprs := make([]ListPrintReports, 0, len(responses))
 	for _, r := range responses {
 		nlprs = append(nlprs, ListPrintReports{r})
@@ -113,12 +113,10 @@ func templateOut(responses []*entities.NetworkListReport, cmd *cobra.Command) er
 
 	// Headers() gets lost resolving the embedded field names so add them
 	headers := report.Headers(ListPrintReports{}, map[string]string{
-		"Name":       "name",
-		"CNIVersion": "version",
-		"Version":    "version",
-		"Plugins":    "plugins",
-		"Labels":     "labels",
-		"ID":         "network id",
+		"Name":   "name",
+		"Driver": "driver",
+		"Labels": "labels",
+		"ID":     "network id",
 	})
 
 	renderHeaders := report.HasTable(networkListOptions.Format)
@@ -127,7 +125,7 @@ func templateOut(responses []*entities.NetworkListReport, cmd *cobra.Command) er
 		row = report.NormalizeFormat(networkListOptions.Format)
 	} else { // 'podman network ls' equivalent to 'podman network ls --format="table {{.ID}} {{.Name}} {{.Version}} {{.Plugins}}" '
 		renderHeaders = true
-		row = "{{.ID}}\t{{.Name}}\t{{.Version}}\t{{.Plugins}}\n"
+		row = "{{.ID}}\t{{.Name}}\t{{.Driver}}\n"
 	}
 	format = report.EnforceRange(row)
 
@@ -153,23 +151,13 @@ func templateOut(responses []*entities.NetworkListReport, cmd *cobra.Command) er
 
 // ListPrintReports returns the network list report
 type ListPrintReports struct {
-	*entities.NetworkListReport
-}
-
-// Version returns the CNI version
-func (n ListPrintReports) Version() string {
-	return n.CNIVersion
-}
-
-// Plugins returns the CNI Plugins
-func (n ListPrintReports) Plugins() string {
-	return network.GetCNIPlugins(n.NetworkConfigList)
+	types.Network
 }
 
 // Labels returns any labels added to a Network
 func (n ListPrintReports) Labels() string {
-	list := make([]string, 0, len(n.NetworkListReport.Labels))
-	for k, v := range n.NetworkListReport.Labels {
+	list := make([]string, 0, len(n.Network.Labels))
+	for k, v := range n.Network.Labels {
 		list = append(list, k+"="+v)
 	}
 	return strings.Join(list, ",")
@@ -181,5 +169,5 @@ func (n ListPrintReports) ID() string {
 	if noTrunc {
 		length = 64
 	}
-	return network.GetNetworkID(n.Name)[:length]
+	return n.Network.ID[:length]
 }