Merge pull request moby#16645 from mavenugo/ux

Docker Network UX & remote API changes

api/client/network.go

@@ -1,14 +1,207 @@
-// +build experimental
-
 package client
 
 import (
-	nwclient "github.com/docker/libnetwork/client"
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"text/tabwriter"
+
+	"github.com/docker/docker/api/types"
+	Cli "github.com/docker/docker/cli"
+	flag "github.com/docker/docker/pkg/mflag"
+	"github.com/docker/docker/pkg/stringid"
 )
 
-// CmdNetwork is used to create, display and configure network endpoints.
+// CmdNetwork is the parent subcommand for all network commands
+//
+// Usage: docker network <COMMAND> [OPTIONS]
 func (cli *DockerCli) CmdNetwork(args ...string) error {
-	nCli := nwclient.NewNetworkCli(cli.out, cli.err, nwclient.CallFunc(cli.callWrapper))
-	args = append([]string{"network"}, args...)
-	return nCli.Cmd("docker", args...)
+	cmd := Cli.Subcmd("network", []string{"COMMAND [OPTIONS]"}, networkUsage(), false)
+	cmd.Require(flag.Min, 1)
+	err := cmd.ParseFlags(args, true)
+	cmd.Usage()
+	return err
+}
+
+// CmdNetworkCreate creates a new network with a given name
+//
+// Usage: docker network create [OPTIONS] <NETWORK-NAME>
+func (cli *DockerCli) CmdNetworkCreate(args ...string) error {
+	cmd := Cli.Subcmd("network create", []string{"NETWORK-NAME"}, "Creates a new network with a name specified by the user", false)
+	flDriver := cmd.String([]string{"d", "-driver"}, "", "Driver to manage the Network")
+	cmd.Require(flag.Exact, 1)
+	err := cmd.ParseFlags(args, true)
+	if err != nil {
+		return err
+	}
+
+	// Construct network create request body
+	nc := types.NetworkCreate{Name: cmd.Arg(0), Driver: *flDriver, CheckDuplicate: true}
+	obj, _, err := readBody(cli.call("POST", "/networks/create", nc, nil))
+	if err != nil {
+		return err
+	}
+	var resp types.NetworkCreateResponse
+	err = json.Unmarshal(obj, &resp)
+	if err != nil {
+		return err
+	}
+	fmt.Fprintf(cli.out, "%s\n", resp.ID)
+	return nil
+}
+
+// CmdNetworkRm deletes a network
+//
+// Usage: docker network rm <NETWORK-NAME | NETWORK-ID>
+func (cli *DockerCli) CmdNetworkRm(args ...string) error {
+	cmd := Cli.Subcmd("network rm", []string{"NETWORK"}, "Deletes a network", false)
+	cmd.Require(flag.Exact, 1)
+	err := cmd.ParseFlags(args, true)
+	if err != nil {
+		return err
+	}
+	_, _, err = readBody(cli.call("DELETE", "/networks/"+cmd.Arg(0), nil, nil))
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// CmdNetworkConnect connects a container to a network
+//
+// Usage: docker network connect <NETWORK> <CONTAINER>
+func (cli *DockerCli) CmdNetworkConnect(args ...string) error {
+	cmd := Cli.Subcmd("network connect", []string{"NETWORK CONTAINER"}, "Connects a container to a network", false)
+	cmd.Require(flag.Exact, 2)
+	err := cmd.ParseFlags(args, true)
+	if err != nil {
+		return err
+	}
+
+	nc := types.NetworkConnect{Container: cmd.Arg(1)}
+	_, _, err = readBody(cli.call("POST", "/networks/"+cmd.Arg(0)+"/connect", nc, nil))
+	return err
+}
+
+// CmdNetworkDisconnect disconnects a container from a network
+//
+// Usage: docker network disconnect <NETWORK> <CONTAINER>
+func (cli *DockerCli) CmdNetworkDisconnect(args ...string) error {
+	cmd := Cli.Subcmd("network disconnect", []string{"NETWORK CONTAINER"}, "Disconnects container from a network", false)
+	cmd.Require(flag.Exact, 2)
+	err := cmd.ParseFlags(args, true)
+	if err != nil {
+		return err
+	}
+
+	nc := types.NetworkConnect{Container: cmd.Arg(1)}
+	_, _, err = readBody(cli.call("POST", "/networks/"+cmd.Arg(0)+"/disconnect", nc, nil))
+	return err
+}
+
+// CmdNetworkLs lists all the netorks managed by docker daemon
+//
+// Usage: docker network ls [OPTIONS]
+func (cli *DockerCli) CmdNetworkLs(args ...string) error {
+	cmd := Cli.Subcmd("network ls", []string{""}, "Lists all the networks created by the user", false)
+	quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only display numeric IDs")
+	noTrunc := cmd.Bool([]string{"", "-no-trunc"}, false, "Do not truncate the output")
+	nLatest := cmd.Bool([]string{"l", "-latest"}, false, "Show the latest network created")
+	last := cmd.Int([]string{"n"}, -1, "Show n last created networks")
+	err := cmd.ParseFlags(args, true)
+	if err != nil {
+		return err
+	}
+	obj, _, err := readBody(cli.call("GET", "/networks", nil, nil))
+	if err != nil {
+		return err
+	}
+	if *last == -1 && *nLatest {
+		*last = 1
+	}
+
+	var networkResources []types.NetworkResource
+	err = json.Unmarshal(obj, &networkResources)
+	if err != nil {
+		return err
+	}
+
+	wr := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
+
+	// unless quiet (-q) is specified, print field titles
+	if !*quiet {
+		fmt.Fprintln(wr, "NETWORK ID\tNAME\tDRIVER")
+	}
+
+	for _, networkResource := range networkResources {
+		ID := networkResource.ID
+		netName := networkResource.Name
+		if !*noTrunc {
+			ID = stringid.TruncateID(ID)
+		}
+		if *quiet {
+			fmt.Fprintln(wr, ID)
+			continue
+		}
+		driver := networkResource.Driver
+		fmt.Fprintf(wr, "%s\t%s\t%s\t",
+			ID,
+			netName,
+			driver)
+		fmt.Fprint(wr, "\n")
+	}
+	wr.Flush()
+	return nil
+}
+
+// CmdNetworkInspect inspects the network object for more details
+//
+// Usage: docker network inspect <NETWORK>
+// CmdNetworkInspect handles Network inspect UI
+func (cli *DockerCli) CmdNetworkInspect(args ...string) error {
+	cmd := Cli.Subcmd("network inspect", []string{"NETWORK"}, "Displays detailed information on a network", false)
+	cmd.Require(flag.Exact, 1)
+	err := cmd.ParseFlags(args, true)
+	if err != nil {
+		return err
+	}
+
+	obj, _, err := readBody(cli.call("GET", "/networks/"+cmd.Arg(0), nil, nil))
+	if err != nil {
+		return err
+	}
+	networkResource := &types.NetworkResource{}
+	if err := json.NewDecoder(bytes.NewReader(obj)).Decode(networkResource); err != nil {
+		return err
+	}
+
+	indented := new(bytes.Buffer)
+	if err := json.Indent(indented, obj, "", "    "); err != nil {
+		return err
+	}
+	if _, err := io.Copy(cli.out, indented); err != nil {
+		return err
+	}
+	return nil
+}
+
+func networkUsage() string {
+	networkCommands := map[string]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",
+	}
+
+	help := "Commands:\n"
+
+	for cmd, description := range networkCommands {
+		help += fmt.Sprintf("  %-25.25s%s\n", cmd, description)
+	}
+
+	help += fmt.Sprintf("\nRun 'docker network COMMAND --help' for more information on a command.")
+	return help
 }

api/server/router/local/local.go

@@ -5,11 +5,9 @@ import (
 
 	"golang.org/x/net/context"
 
-	"github.com/Sirupsen/logrus"
 	"github.com/docker/docker/api/server/httputils"
 	dkrouter "github.com/docker/docker/api/server/router"
 	"github.com/docker/docker/daemon"
-	"github.com/gorilla/mux"
 )
 
 // router is a docker router that talks with the local docker daemon.
@@ -31,11 +29,14 @@ func (l localRoute) Handler() httputils.APIFunc {
 	return l.handler
 }
 
-// Register adds the filtered handler to the mux.
-func (l localRoute) Register(m *mux.Router, handler http.Handler) {
-	logrus.Debugf("Registering %s, %s", l.method, l.path)
-	m.Path(dkrouter.VersionMatcher + l.path).Methods(l.method).Handler(handler)
-	m.Path(l.path).Methods(l.method).Handler(handler)
+// Method returns the http method that the route responds to.
+func (l localRoute) Method() string {
+	return l.method
+}
+
+// Path returns the subpath where the route responds to.
+func (l localRoute) Path() string {
+	return l.path
 }
 
 // NewRoute initialies a new local route for the reouter

api/server/router/network/network.go

@@ -1,26 +1,41 @@
 package network
 
 import (
-	"github.com/docker/docker/api/server/httputils"
 	"github.com/docker/docker/api/server/router"
+	"github.com/docker/docker/api/server/router/local"
+	"github.com/docker/docker/daemon"
 )
 
 // networkRouter is a router to talk with the network controller
 type networkRouter struct {
+	daemon *daemon.Daemon
 	routes []router.Route
 }
 
-// Routes returns the available routes to the network controller
-func (n networkRouter) Routes() []router.Route {
-	return n.routes
+// NewRouter initializes a new network router
+func NewRouter(d *daemon.Daemon) router.Router {
+	r := &networkRouter{
+		daemon: d,
+	}
+	r.initRoutes()
+	return r
 }
 
-type networkRoute struct {
-	path    string
-	handler httputils.APIFunc
+// Routes returns the available routes to the network controller
+func (r *networkRouter) Routes() []router.Route {
+	return r.routes
 }
 
-// Handler returns the APIFunc to let the server wrap it in middlewares
-func (l networkRoute) Handler() httputils.APIFunc {
-	return l.handler
+func (r *networkRouter) initRoutes() {
+	r.routes = []router.Route{
+		// GET
+		local.NewGetRoute("/networks", r.getNetworksList),
+		local.NewGetRoute("/networks/{id:.*}", r.getNetwork),
+		// POST
+		local.NewPostRoute("/networks/create", r.postNetworkCreate),
+		local.NewPostRoute("/networks/{id:.*}/connect", r.postNetworkConnect),
+		local.NewPostRoute("/networks/{id:.*}/disconnect", r.postNetworkDisconnect),
+		// DELETE
+		local.NewDeleteRoute("/networks/{id:.*}", r.deleteNetwork),
+	}
 }