2015-05-20 12:20:19 +00:00
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package client
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import (
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2015-09-27 11:09:27 +00:00
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"fmt"
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2015-10-09 18:21:48 +00:00
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"net"
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2016-02-17 03:11:37 +00:00
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"sort"
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2015-10-09 18:21:48 +00:00
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"strings"
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2015-09-27 11:09:27 +00:00
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"text/tabwriter"
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2016-03-16 19:19:22 +00:00
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"golang.org/x/net/context"
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2015-09-27 11:09:27 +00:00
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Cli "github.com/docker/docker/cli"
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2015-10-09 18:21:48 +00:00
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"github.com/docker/docker/opts"
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2015-09-27 11:09:27 +00:00
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flag "github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/pkg/stringid"
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2016-01-05 19:20:47 +00:00
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runconfigopts "github.com/docker/docker/runconfig/opts"
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2016-01-05 00:05:26 +00:00
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"github.com/docker/engine-api/types"
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"github.com/docker/engine-api/types/filters"
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"github.com/docker/engine-api/types/network"
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2015-05-20 12:20:19 +00:00
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)
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2015-09-27 11:09:27 +00:00
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// CmdNetwork is the parent subcommand for all network commands
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//
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// Usage: docker network <COMMAND> [OPTIONS]
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2015-05-20 12:20:19 +00:00
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func (cli *DockerCli) CmdNetwork(args ...string) error {
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2015-09-27 11:09:27 +00:00
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cmd := Cli.Subcmd("network", []string{"COMMAND [OPTIONS]"}, networkUsage(), false)
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cmd.Require(flag.Min, 1)
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err := cmd.ParseFlags(args, true)
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cmd.Usage()
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return err
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}
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// CmdNetworkCreate creates a new network with a given name
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//
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// Usage: docker network create [OPTIONS] <NETWORK-NAME>
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func (cli *DockerCli) CmdNetworkCreate(args ...string) error {
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cmd := Cli.Subcmd("network create", []string{"NETWORK-NAME"}, "Creates a new network with a name specified by the user", false)
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2015-10-09 18:21:48 +00:00
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flDriver := cmd.String([]string{"d", "-driver"}, "bridge", "Driver to manage the Network")
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2015-10-15 01:49:27 +00:00
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flOpts := opts.NewMapOpts(nil, nil)
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2015-10-09 18:21:48 +00:00
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flIpamDriver := cmd.String([]string{"-ipam-driver"}, "default", "IP Address Management Driver")
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flIpamSubnet := opts.NewListOpts(nil)
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flIpamIPRange := opts.NewListOpts(nil)
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flIpamGateway := opts.NewListOpts(nil)
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flIpamAux := opts.NewMapOpts(nil, nil)
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2015-10-23 19:28:39 +00:00
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flIpamOpt := opts.NewMapOpts(nil, nil)
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2016-03-16 21:52:34 +00:00
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flLabels := opts.NewListOpts(nil)
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2015-10-09 18:21:48 +00:00
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2015-10-15 01:49:27 +00:00
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cmd.Var(&flIpamSubnet, []string{"-subnet"}, "subnet in CIDR format that represents a network segment")
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2015-10-09 18:21:48 +00:00
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cmd.Var(&flIpamIPRange, []string{"-ip-range"}, "allocate container ip from a sub-range")
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cmd.Var(&flIpamGateway, []string{"-gateway"}, "ipv4 or ipv6 Gateway for the master subnet")
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2015-10-15 01:49:27 +00:00
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cmd.Var(flIpamAux, []string{"-aux-address"}, "auxiliary ipv4 or ipv6 addresses used by Network driver")
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cmd.Var(flOpts, []string{"o", "-opt"}, "set driver specific options")
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2015-10-23 19:28:39 +00:00
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cmd.Var(flIpamOpt, []string{"-ipam-opt"}, "set IPAM driver specific options")
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2016-03-16 21:52:34 +00:00
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cmd.Var(&flLabels, []string{"-label"}, "set metadata on a network")
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2015-10-09 18:21:48 +00:00
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2015-12-28 02:15:50 +00:00
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flInternal := cmd.Bool([]string{"-internal"}, false, "restricts external access to the network")
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2016-02-12 01:42:15 +00:00
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flIPv6 := cmd.Bool([]string{"-ipv6"}, false, "enable IPv6 networking")
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2015-12-28 02:15:50 +00:00
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2015-09-27 11:09:27 +00:00
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cmd.Require(flag.Exact, 1)
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err := cmd.ParseFlags(args, true)
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if err != nil {
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return err
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}
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2015-10-29 20:48:25 +00:00
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// Set the default driver to "" if the user didn't set the value.
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// That way we can know whether it was user input or not.
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driver := *flDriver
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if !cmd.IsSet("-driver") && !cmd.IsSet("d") {
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driver = ""
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}
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2015-10-09 18:21:48 +00:00
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ipamCfg, err := consolidateIpam(flIpamSubnet.GetAll(), flIpamIPRange.GetAll(), flIpamGateway.GetAll(), flIpamAux.GetAll())
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if err != nil {
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return err
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}
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2015-09-27 11:09:27 +00:00
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// Construct network create request body
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2015-10-09 18:21:48 +00:00
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nc := types.NetworkCreate{
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2015-10-29 20:48:25 +00:00
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Driver: driver,
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2015-10-23 19:28:39 +00:00
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IPAM: network.IPAM{Driver: *flIpamDriver, Config: ipamCfg, Options: flIpamOpt.GetAll()},
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2015-10-15 01:49:27 +00:00
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Options: flOpts.GetAll(),
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2015-10-09 18:21:48 +00:00
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CheckDuplicate: true,
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2015-12-28 02:15:50 +00:00
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Internal: *flInternal,
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2015-12-10 14:02:50 +00:00
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EnableIPv6: *flIPv6,
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2016-03-16 21:52:34 +00:00
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Labels: runconfigopts.ConvertKVStringsToMap(flLabels.GetAll()),
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2015-10-09 18:21:48 +00:00
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}
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2015-12-04 16:33:00 +00:00
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2016-04-13 08:33:46 +00:00
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resp, err := cli.client.NetworkCreate(context.Background(), cmd.Arg(0), nc)
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2015-09-27 11:09:27 +00:00
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if err != nil {
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return err
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}
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fmt.Fprintf(cli.out, "%s\n", resp.ID)
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return nil
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}
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2015-10-29 16:10:20 +00:00
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// CmdNetworkRm deletes one or more networks
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2015-09-27 11:09:27 +00:00
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//
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2015-10-29 16:10:20 +00:00
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// Usage: docker network rm NETWORK-NAME|NETWORK-ID [NETWORK-NAME|NETWORK-ID...]
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2015-09-27 11:09:27 +00:00
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func (cli *DockerCli) CmdNetworkRm(args ...string) error {
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2015-10-29 16:10:20 +00:00
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cmd := Cli.Subcmd("network rm", []string{"NETWORK [NETWORK...]"}, "Deletes one or more networks", false)
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cmd.Require(flag.Min, 1)
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2015-12-04 16:33:00 +00:00
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if err := cmd.ParseFlags(args, true); err != nil {
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2015-09-27 11:09:27 +00:00
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return err
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}
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2015-10-29 16:10:20 +00:00
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status := 0
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for _, net := range cmd.Args() {
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2016-03-16 19:19:22 +00:00
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if err := cli.client.NetworkRemove(context.Background(), net); err != nil {
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2015-10-29 16:10:20 +00:00
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fmt.Fprintf(cli.err, "%s\n", err)
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status = 1
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continue
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}
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}
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if status != 0 {
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return Cli.StatusError{StatusCode: status}
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2015-09-27 11:09:27 +00:00
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}
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return nil
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}
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// CmdNetworkConnect connects a container to a network
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//
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2016-01-08 00:18:34 +00:00
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// Usage: docker network connect [OPTIONS] <NETWORK> <CONTAINER>
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2015-09-27 11:09:27 +00:00
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func (cli *DockerCli) CmdNetworkConnect(args ...string) error {
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cmd := Cli.Subcmd("network connect", []string{"NETWORK CONTAINER"}, "Connects a container to a network", false)
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2016-01-08 00:18:34 +00:00
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flIPAddress := cmd.String([]string{"-ip"}, "", "IP Address")
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flIPv6Address := cmd.String([]string{"-ip6"}, "", "IPv6 Address")
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2016-01-05 19:20:47 +00:00
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flLinks := opts.NewListOpts(runconfigopts.ValidateLink)
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cmd.Var(&flLinks, []string{"-link"}, "Add link to another container")
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2016-01-08 13:45:56 +00:00
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flAliases := opts.NewListOpts(nil)
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cmd.Var(&flAliases, []string{"-alias"}, "Add network-scoped alias for the container")
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2016-01-08 00:18:34 +00:00
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cmd.Require(flag.Min, 2)
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2015-12-04 16:33:00 +00:00
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if err := cmd.ParseFlags(args, true); err != nil {
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2015-09-27 11:09:27 +00:00
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return err
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}
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2016-01-08 00:18:34 +00:00
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epConfig := &network.EndpointSettings{
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IPAMConfig: &network.EndpointIPAMConfig{
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IPv4Address: *flIPAddress,
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IPv6Address: *flIPv6Address,
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},
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2016-01-08 13:45:56 +00:00
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Links: flLinks.GetAll(),
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Aliases: flAliases.GetAll(),
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2016-01-08 00:18:34 +00:00
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}
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2016-03-16 19:19:22 +00:00
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return cli.client.NetworkConnect(context.Background(), cmd.Arg(0), cmd.Arg(1), epConfig)
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2015-09-27 11:09:27 +00:00
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}
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// CmdNetworkDisconnect disconnects a container from a network
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//
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// Usage: docker network disconnect <NETWORK> <CONTAINER>
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func (cli *DockerCli) CmdNetworkDisconnect(args ...string) error {
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cmd := Cli.Subcmd("network disconnect", []string{"NETWORK CONTAINER"}, "Disconnects container from a network", false)
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2016-01-13 04:56:36 +00:00
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force := cmd.Bool([]string{"f", "-force"}, false, "Force the container to disconnect from a network")
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2015-09-27 11:09:27 +00:00
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cmd.Require(flag.Exact, 2)
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2015-12-04 16:33:00 +00:00
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if err := cmd.ParseFlags(args, true); err != nil {
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2015-09-27 11:09:27 +00:00
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return err
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}
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2016-03-16 19:19:22 +00:00
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return cli.client.NetworkDisconnect(context.Background(), cmd.Arg(0), cmd.Arg(1), *force)
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2015-09-27 11:09:27 +00:00
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}
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2015-12-13 16:00:39 +00:00
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// CmdNetworkLs lists all the networks managed by docker daemon
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2015-09-27 11:09:27 +00:00
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//
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// Usage: docker network ls [OPTIONS]
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func (cli *DockerCli) CmdNetworkLs(args ...string) error {
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2015-10-09 18:21:48 +00:00
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cmd := Cli.Subcmd("network ls", nil, "Lists networks", true)
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2015-09-27 11:09:27 +00:00
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quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only display numeric IDs")
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2015-10-09 18:21:48 +00:00
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noTrunc := cmd.Bool([]string{"-no-trunc"}, false, "Do not truncate the output")
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2015-11-10 08:57:06 +00:00
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flFilter := opts.NewListOpts(nil)
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cmd.Var(&flFilter, []string{"f", "-filter"}, "Filter output based on conditions provided")
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2015-10-09 18:21:48 +00:00
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cmd.Require(flag.Exact, 0)
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2015-11-10 08:57:06 +00:00
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err := cmd.ParseFlags(args, true)
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if err != nil {
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2015-09-27 11:09:27 +00:00
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return err
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}
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2015-11-10 08:57:06 +00:00
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// Consolidate all filter flags, and sanity check them early.
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// They'll get process after get response from server.
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netFilterArgs := filters.NewArgs()
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for _, f := range flFilter.GetAll() {
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if netFilterArgs, err = filters.ParseFlag(f, netFilterArgs); err != nil {
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return err
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}
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}
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options := types.NetworkListOptions{
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Filters: netFilterArgs,
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}
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2016-03-16 19:19:22 +00:00
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networkResources, err := cli.client.NetworkList(context.Background(), options)
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2015-09-27 11:09:27 +00:00
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if err != nil {
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return err
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}
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wr := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
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// unless quiet (-q) is specified, print field titles
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if !*quiet {
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fmt.Fprintln(wr, "NETWORK ID\tNAME\tDRIVER")
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}
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2016-02-17 03:11:37 +00:00
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sort.Sort(byNetworkName(networkResources))
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2015-09-27 11:09:27 +00:00
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for _, networkResource := range networkResources {
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ID := networkResource.ID
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netName := networkResource.Name
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if !*noTrunc {
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ID = stringid.TruncateID(ID)
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}
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if *quiet {
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fmt.Fprintln(wr, ID)
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continue
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}
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driver := networkResource.Driver
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fmt.Fprintf(wr, "%s\t%s\t%s\t",
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ID,
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netName,
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driver)
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fmt.Fprint(wr, "\n")
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}
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wr.Flush()
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return nil
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}
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2016-02-17 03:11:37 +00:00
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type byNetworkName []types.NetworkResource
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func (r byNetworkName) Len() int { return len(r) }
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func (r byNetworkName) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
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func (r byNetworkName) Less(i, j int) bool { return r[i].Name < r[j].Name }
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2015-09-27 11:09:27 +00:00
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// CmdNetworkInspect inspects the network object for more details
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//
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2015-10-23 20:48:22 +00:00
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// Usage: docker network inspect [OPTIONS] <NETWORK> [NETWORK...]
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2015-09-27 11:09:27 +00:00
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func (cli *DockerCli) CmdNetworkInspect(args ...string) error {
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2015-10-29 16:10:20 +00:00
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cmd := Cli.Subcmd("network inspect", []string{"NETWORK [NETWORK...]"}, "Displays detailed information on one or more networks", false)
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2015-12-02 21:32:10 +00:00
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tmplStr := cmd.String([]string{"f", "-format"}, "", "Format the output using the given go template")
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2015-10-21 06:57:29 +00:00
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cmd.Require(flag.Min, 1)
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2015-12-02 21:32:10 +00:00
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if err := cmd.ParseFlags(args, true); err != nil {
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2015-09-27 11:09:27 +00:00
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return err
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}
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2015-12-08 03:04:38 +00:00
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inspectSearcher := func(name string) (interface{}, []byte, error) {
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2016-03-16 19:19:22 +00:00
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i, err := cli.client.NetworkInspect(context.Background(), name)
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2015-12-08 03:04:38 +00:00
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return i, nil, err
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2015-12-02 21:32:10 +00:00
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}
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2015-12-08 03:04:38 +00:00
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return cli.inspectElements(*tmplStr, cmd.Args(), inspectSearcher)
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2015-09-27 11:09:27 +00:00
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}
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2015-11-04 12:52:29 +00:00
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// Consolidates the ipam configuration as a group from different related configurations
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2015-10-09 18:21:48 +00:00
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// user can configure network with multiple non-overlapping subnets and hence it is
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2015-12-13 16:00:39 +00:00
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// possible to correlate the various related parameters and consolidate them.
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// consoidateIpam consolidates subnets, ip-ranges, gateways and auxiliary addresses into
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2015-10-09 18:21:48 +00:00
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// structured ipam data.
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func consolidateIpam(subnets, ranges, gateways []string, auxaddrs map[string]string) ([]network.IPAMConfig, error) {
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if len(subnets) < len(ranges) || len(subnets) < len(gateways) {
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return nil, fmt.Errorf("every ip-range or gateway must have a corresponding subnet")
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}
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iData := map[string]*network.IPAMConfig{}
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// Populate non-overlapping subnets into consolidation map
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for _, s := range subnets {
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for k := range iData {
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ok1, err := subnetMatches(s, k)
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if err != nil {
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return nil, err
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}
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ok2, err := subnetMatches(k, s)
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if err != nil {
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return nil, err
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|
|
|
}
|
|
|
|
if ok1 || ok2 {
|
|
|
|
return nil, fmt.Errorf("multiple overlapping subnet configuration is not supported")
|
|
|
|
}
|
|
|
|
}
|
|
|
|
iData[s] = &network.IPAMConfig{Subnet: s, AuxAddress: map[string]string{}}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Validate and add valid ip ranges
|
|
|
|
for _, r := range ranges {
|
|
|
|
match := false
|
|
|
|
for _, s := range subnets {
|
|
|
|
ok, err := subnetMatches(s, r)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if !ok {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
if iData[s].IPRange != "" {
|
|
|
|
return nil, fmt.Errorf("cannot configure multiple ranges (%s, %s) on the same subnet (%s)", r, iData[s].IPRange, s)
|
|
|
|
}
|
|
|
|
d := iData[s]
|
|
|
|
d.IPRange = r
|
|
|
|
match = true
|
|
|
|
}
|
|
|
|
if !match {
|
|
|
|
return nil, fmt.Errorf("no matching subnet for range %s", r)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Validate and add valid gateways
|
|
|
|
for _, g := range gateways {
|
|
|
|
match := false
|
|
|
|
for _, s := range subnets {
|
|
|
|
ok, err := subnetMatches(s, g)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if !ok {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
if iData[s].Gateway != "" {
|
|
|
|
return nil, fmt.Errorf("cannot configure multiple gateways (%s, %s) for the same subnet (%s)", g, iData[s].Gateway, s)
|
|
|
|
}
|
|
|
|
d := iData[s]
|
|
|
|
d.Gateway = g
|
|
|
|
match = true
|
|
|
|
}
|
|
|
|
if !match {
|
|
|
|
return nil, fmt.Errorf("no matching subnet for gateway %s", g)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Validate and add aux-addresses
|
|
|
|
for key, aa := range auxaddrs {
|
|
|
|
match := false
|
|
|
|
for _, s := range subnets {
|
|
|
|
ok, err := subnetMatches(s, aa)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if !ok {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
iData[s].AuxAddress[key] = aa
|
|
|
|
match = true
|
|
|
|
}
|
|
|
|
if !match {
|
|
|
|
return nil, fmt.Errorf("no matching subnet for aux-address %s", aa)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
idl := []network.IPAMConfig{}
|
|
|
|
for _, v := range iData {
|
|
|
|
idl = append(idl, *v)
|
|
|
|
}
|
|
|
|
return idl, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func subnetMatches(subnet, data string) (bool, error) {
|
|
|
|
var (
|
|
|
|
ip net.IP
|
|
|
|
)
|
|
|
|
|
|
|
|
_, s, err := net.ParseCIDR(subnet)
|
|
|
|
if err != nil {
|
|
|
|
return false, fmt.Errorf("Invalid subnet %s : %v", s, err)
|
|
|
|
}
|
|
|
|
|
|
|
|
if strings.Contains(data, "/") {
|
|
|
|
ip, _, err = net.ParseCIDR(data)
|
|
|
|
if err != nil {
|
|
|
|
return false, fmt.Errorf("Invalid cidr %s : %v", data, err)
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ip = net.ParseIP(data)
|
|
|
|
}
|
|
|
|
|
|
|
|
return s.Contains(ip), nil
|
|
|
|
}
|
|
|
|
|
2015-09-27 11:09:27 +00:00
|
|
|
func networkUsage() string {
|
2016-04-01 12:03:04 +00:00
|
|
|
networkCommands := [][]string{
|
|
|
|
{"create", "Create a network"},
|
|
|
|
{"connect", "Connect container to a network"},
|
|
|
|
{"disconnect", "Disconnect container from a network"},
|
|
|
|
{"inspect", "Display detailed network information"},
|
|
|
|
{"ls", "List all networks"},
|
|
|
|
{"rm", "Remove a network"},
|
2015-09-27 11:09:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
help := "Commands:\n"
|
|
|
|
|
2016-04-01 12:03:04 +00:00
|
|
|
for _, cmd := range networkCommands {
|
|
|
|
help += fmt.Sprintf(" %-25.25s%s\n", cmd[0], cmd[1])
|
2015-09-27 11:09:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
help += fmt.Sprintf("\nRun 'docker network COMMAND --help' for more information on a command.")
|
|
|
|
return help
|
2015-05-20 12:20:19 +00:00
|
|
|
}
|