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Moved all the service commands under experimental build tag

In order to support the docker experimental feature build, moving the
service commands under experimental tag. Please refer to :
https://github.com/docker/docker/pull/13338/ for more information

Signed-off-by: Madhu Venugopal <madhu@docker.com>
This commit is contained in:
Madhu Venugopal 2015-05-23 13:05:48 -07:00
parent c14334bfc7
commit f1712c0bf6
6 changed files with 423 additions and 354 deletions

View file

@ -22,7 +22,7 @@ build: ${build_image}.created
${docker} make build-local
build-local:
$(shell which godep) go build ./...
$(shell which godep) go build -tags experimental ./...
check: ${build_image}.created
${docker} make check-local

View file

@ -0,0 +1,133 @@
// +build experimental
package client
import (
"bytes"
"testing"
_ "github.com/docker/libnetwork/netutils"
)
func TestClientNetworkServiceInvalidCommand(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "invalid")
if err == nil {
t.Fatalf("Passing invalid commands must fail")
}
}
func TestClientNetworkServiceCreate(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "create", mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
func TestClientNetworkServiceRm(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "rm", mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
func TestClientNetworkServiceLs(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "ls", mockNwName)
if err != nil {
t.Fatal(err.Error())
}
if out.String() != string(mockServiceListJSON) {
t.Fatal("Network service ls command fail to return the expected list")
}
}
func TestClientNetworkServiceInfo(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "info", mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
if out.String() != string(mockServiceJSON) {
t.Fatal("Network info command fail to return the expected object")
}
}
func TestClientNetworkServiceInfoById(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "info", mockServiceID, mockNwID)
if err != nil {
t.Fatal(err.Error())
}
if out.String() != string(mockServiceJSON) {
t.Fatal("Network info command fail to return the expected object")
}
}
func TestClientNetworkServiceJoin(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "join", mockContainerID, mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
func TestClientNetworkServiceLeave(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "leave", mockContainerID, mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
// Docker Flag processing in flag.go uses os.Exit() frequently, even for --help
// TODO : Handle the --help test-case in the IT when CLI is available
/*
func TestClientNetworkServiceCreateHelp(t *testing.T) {
var out, errOut bytes.Buffer
cFunc := func(method, path string, data interface{}, headers map[string][]string) (io.ReadCloser, int, error) {
return nil, 0, nil
}
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "create", "--help")
if err != nil {
t.Fatalf(err.Error())
}
}
*/
// Docker flag processing in flag.go uses os.Exit(1) for incorrect parameter case.
// TODO : Handle the missing argument case in the IT when CLI is available
/*
func TestClientNetworkServiceCreateMissingArgument(t *testing.T) {
var out, errOut bytes.Buffer
cFunc := func(method, path string, data interface{}, headers map[string][]string) (io.ReadCloser, int, error) {
return nil, 0, nil
}
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "create")
if err != nil {
t.Fatal(err.Error())
}
}
*/

View file

@ -184,95 +184,6 @@ func TestClientNetworkInfoById(t *testing.T) {
}
}
func TestClientNetworkServiceInvalidCommand(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "invalid")
if err == nil {
t.Fatalf("Passing invalid commands must fail")
}
}
func TestClientNetworkServiceCreate(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "create", mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
func TestClientNetworkServiceRm(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "rm", mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
func TestClientNetworkServiceLs(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "ls", mockNwName)
if err != nil {
t.Fatal(err.Error())
}
if out.String() != string(mockServiceListJSON) {
t.Fatal("Network service ls command fail to return the expected list")
}
}
func TestClientNetworkServiceInfo(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "info", mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
if out.String() != string(mockServiceJSON) {
t.Fatal("Network info command fail to return the expected object")
}
}
func TestClientNetworkServiceInfoById(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "info", mockServiceID, mockNwID)
if err != nil {
t.Fatal(err.Error())
}
if out.String() != string(mockServiceJSON) {
t.Fatal("Network info command fail to return the expected object")
}
}
func TestClientNetworkServiceJoin(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "join", mockContainerID, mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
func TestClientNetworkServiceLeave(t *testing.T) {
var out, errOut bytes.Buffer
cli := NewNetworkCli(&out, &errOut, callbackFunc)
err := cli.Cmd("docker", "network", "service", "leave", mockContainerID, mockServiceName, mockNwName)
if err != nil {
t.Fatal(err.Error())
}
}
// Docker Flag processing in flag.go uses os.Exit() frequently, even for --help
// TODO : Handle the --help test-case in the IT when CLI is available
/*

View file

@ -6,7 +6,6 @@ import (
"fmt"
"io"
"net/http"
"strings"
flag "github.com/docker/docker/pkg/mflag"
)
@ -26,12 +25,6 @@ var (
{"rm", "Remove a network"},
{"ls", "List all networks"},
{"info", "Display information of a network"},
{"service create", "Create a service endpoint"},
{"service rm", "Remove a service endpoint"},
{"service join", "Join a container to a service endpoint"},
{"service leave", "Leave a container from a service endpoint"},
{"service ls", "Lists all service endpoints on a network"},
{"service info", "Display information of a service endpoint"},
}
)
@ -184,249 +177,6 @@ func lookupNetworkID(cli *NetworkCli, nameID string) (string, error) {
return list[0].ID, nil
}
func lookupServiceID(cli *NetworkCli, networkID string, nameID string) (string, error) {
obj, statusCode, err := readBody(cli.call("GET", fmt.Sprintf("/networks/%s/endpoints?name=%s", networkID, nameID), nil, nil))
if err != nil {
return "", err
}
if statusCode != http.StatusOK {
return "", fmt.Errorf("name query failed for %s due to : statuscode(%d) %v", nameID, statusCode, string(obj))
}
var list []*networkResource
err = json.Unmarshal(obj, &list)
if err != nil {
return "", err
}
if len(list) > 0 {
// name query filter will always return a single-element collection
return list[0].ID, nil
}
// Check for Partial-id
obj, statusCode, err = readBody(cli.call("GET", fmt.Sprintf("/networks/%s/endpoints?partial-id=%s", networkID, nameID), nil, nil))
if err != nil {
return "", err
}
if statusCode != http.StatusOK {
return "", fmt.Errorf("partial-id match query failed for %s due to : statuscode(%d) %v", nameID, statusCode, string(obj))
}
err = json.Unmarshal(obj, &list)
if err != nil {
return "", err
}
if len(list) == 0 {
return "", fmt.Errorf("resource not found %s", nameID)
}
if len(list) > 1 {
return "", fmt.Errorf("multiple services matching the partial identifier (%s). Please use full identifier", nameID)
}
return list[0].ID, nil
}
func lookupContainerID(cli *NetworkCli, nameID string) (string, error) {
// TODO : containerID to sandbox-key ?
return nameID, nil
}
// CmdNetworkService handles the network service UI
func (cli *NetworkCli) CmdNetworkService(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "service", "COMMAND [OPTIONS] [arg...]", serviceUsage(chain), false)
cmd.Require(flag.Min, 1)
err := cmd.ParseFlags(args, true)
if err == nil {
cmd.Usage()
return fmt.Errorf("Invalid command : %v", args)
}
return err
}
// CmdNetworkServiceCreate handles service create UI
func (cli *NetworkCli) CmdNetworkServiceCreate(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "create", "SERVICE NETWORK", "Creates a new service on a network", false)
cmd.Require(flag.Min, 2)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(1))
if err != nil {
return err
}
ec := endpointCreate{Name: cmd.Arg(0), NetworkID: networkID}
obj, _, err := readBody(cli.call("POST", "/networks/"+networkID+"/endpoints", ec, nil))
if err != nil {
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceRm handles service delete UI
func (cli *NetworkCli) CmdNetworkServiceRm(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "rm", "SERVICE NETWORK", "Deletes a service", false)
cmd.Require(flag.Min, 2)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(1))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(0))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("DELETE", "/networks/"+networkID+"/endpoints/"+serviceID, nil, nil))
if err != nil {
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceLs handles service list UI
func (cli *NetworkCli) CmdNetworkServiceLs(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "ls", "NETWORK", "Lists all the services on a network", false)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
cmd.Require(flag.Min, 1)
networkID, err := lookupNetworkID(cli, cmd.Arg(0))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("GET", "/networks/"+networkID+"/endpoints", nil, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceInfo handles service info UI
func (cli *NetworkCli) CmdNetworkServiceInfo(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "info", "SERVICE NETWORK", "Displays detailed information on a service", false)
cmd.Require(flag.Min, 2)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(1))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(0))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("GET", "/networks/"+networkID+"/endpoints/"+serviceID, nil, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceJoin handles service join UI
func (cli *NetworkCli) CmdNetworkServiceJoin(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "join", "CONTAINER SERVICE NETWORK", "Sets a container as a service backend", false)
cmd.Require(flag.Min, 3)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
containerID, err := lookupContainerID(cli, cmd.Arg(0))
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(2))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(1))
if err != nil {
return err
}
nc := endpointJoin{ContainerID: containerID}
obj, _, err := readBody(cli.call("POST", "/networks/"+networkID+"/endpoints/"+serviceID+"/containers", nc, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceLeave handles service leave UI
func (cli *NetworkCli) CmdNetworkServiceLeave(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "leave", "CONTAINER SERVICE NETWORK", "Removes a container from service backend", false)
cmd.Require(flag.Min, 3)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
containerID, err := lookupContainerID(cli, cmd.Arg(0))
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(2))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(1))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("DELETE", "/networks/"+networkID+"/endpoints/"+serviceID+"/containers/"+containerID, nil, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
func networkUsage(chain string) string {
help := "Commands:\n"
@ -434,20 +184,10 @@ func networkUsage(chain string) string {
help += fmt.Sprintf(" %-25.25s%s\n", cmd.name, cmd.description)
}
for _, cmd := range serviceCommands {
help += fmt.Sprintf(" %-25.25s%s\n", "service "+cmd.name, cmd.description)
}
help += fmt.Sprintf("\nRun '%s network COMMAND --help' for more information on a command.", chain)
return help
}
func serviceUsage(chain string) string {
help := "Commands:\n"
for _, cmd := range networkCommands {
if strings.HasPrefix(cmd.name, "service ") {
command := strings.SplitAfter(cmd.name, "service ")
help += fmt.Sprintf(" %-10.10s%s\n", command[1], cmd.description)
}
}
help += fmt.Sprintf("\nRun '%s service COMMAND --help' for more information on a command.", chain)
return help
}

View file

@ -0,0 +1,7 @@
// +build !experimental
package client
var (
serviceCommands = []command{}
)

View file

@ -0,0 +1,278 @@
// +build experimental
package client
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
flag "github.com/docker/docker/pkg/mflag"
)
var (
serviceCommands = []command{
{"create", "Create a service endpoint"},
{"rm", "Remove a service endpoint"},
{"join", "Join a container to a service endpoint"},
{"leave", "Leave a container from a service endpoint"},
{"ls", "Lists all service endpoints on a network"},
{"info", "Display information of a service endpoint"},
}
)
func lookupServiceID(cli *NetworkCli, networkID string, nameID string) (string, error) {
obj, statusCode, err := readBody(cli.call("GET", fmt.Sprintf("/networks/%s/endpoints?name=%s", networkID, nameID), nil, nil))
if err != nil {
return "", err
}
if statusCode != http.StatusOK {
return "", fmt.Errorf("name query failed for %s due to : statuscode(%d) %v", nameID, statusCode, string(obj))
}
var list []*networkResource
err = json.Unmarshal(obj, &list)
if err != nil {
return "", err
}
if len(list) > 0 {
// name query filter will always return a single-element collection
return list[0].ID, nil
}
// Check for Partial-id
obj, statusCode, err = readBody(cli.call("GET", fmt.Sprintf("/networks/%s/endpoints?partial-id=%s", networkID, nameID), nil, nil))
if err != nil {
return "", err
}
if statusCode != http.StatusOK {
return "", fmt.Errorf("partial-id match query failed for %s due to : statuscode(%d) %v", nameID, statusCode, string(obj))
}
err = json.Unmarshal(obj, &list)
if err != nil {
return "", err
}
if len(list) == 0 {
return "", fmt.Errorf("resource not found %s", nameID)
}
if len(list) > 1 {
return "", fmt.Errorf("multiple services matching the partial identifier (%s). Please use full identifier", nameID)
}
return list[0].ID, nil
}
func lookupContainerID(cli *NetworkCli, nameID string) (string, error) {
// TODO : containerID to sandbox-key ?
return nameID, nil
}
// CmdNetworkService handles the network service UI
func (cli *NetworkCli) CmdNetworkService(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "service", "COMMAND [OPTIONS] [arg...]", serviceUsage(chain), false)
cmd.Require(flag.Min, 1)
err := cmd.ParseFlags(args, true)
if err == nil {
cmd.Usage()
return fmt.Errorf("Invalid command : %v", args)
}
return err
}
// CmdNetworkServiceCreate handles service create UI
func (cli *NetworkCli) CmdNetworkServiceCreate(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "create", "SERVICE NETWORK", "Creates a new service on a network", false)
cmd.Require(flag.Min, 2)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(1))
if err != nil {
return err
}
ec := endpointCreate{Name: cmd.Arg(0), NetworkID: networkID}
obj, _, err := readBody(cli.call("POST", "/networks/"+networkID+"/endpoints", ec, nil))
if err != nil {
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceRm handles service delete UI
func (cli *NetworkCli) CmdNetworkServiceRm(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "rm", "SERVICE NETWORK", "Deletes a service", false)
cmd.Require(flag.Min, 2)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(1))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(0))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("DELETE", "/networks/"+networkID+"/endpoints/"+serviceID, nil, nil))
if err != nil {
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceLs handles service list UI
func (cli *NetworkCli) CmdNetworkServiceLs(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "ls", "NETWORK", "Lists all the services on a network", false)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
cmd.Require(flag.Min, 1)
networkID, err := lookupNetworkID(cli, cmd.Arg(0))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("GET", "/networks/"+networkID+"/endpoints", nil, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceInfo handles service info UI
func (cli *NetworkCli) CmdNetworkServiceInfo(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "info", "SERVICE NETWORK", "Displays detailed information on a service", false)
cmd.Require(flag.Min, 2)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(1))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(0))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("GET", "/networks/"+networkID+"/endpoints/"+serviceID, nil, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceJoin handles service join UI
func (cli *NetworkCli) CmdNetworkServiceJoin(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "join", "CONTAINER SERVICE NETWORK", "Sets a container as a service backend", false)
cmd.Require(flag.Min, 3)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
containerID, err := lookupContainerID(cli, cmd.Arg(0))
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(2))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(1))
if err != nil {
return err
}
nc := endpointJoin{ContainerID: containerID}
obj, _, err := readBody(cli.call("POST", "/networks/"+networkID+"/endpoints/"+serviceID+"/containers", nc, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
// CmdNetworkServiceLeave handles service leave UI
func (cli *NetworkCli) CmdNetworkServiceLeave(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "leave", "CONTAINER SERVICE NETWORK", "Removes a container from service backend", false)
cmd.Require(flag.Min, 3)
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
containerID, err := lookupContainerID(cli, cmd.Arg(0))
if err != nil {
return err
}
networkID, err := lookupNetworkID(cli, cmd.Arg(2))
if err != nil {
return err
}
serviceID, err := lookupServiceID(cli, networkID, cmd.Arg(1))
if err != nil {
return err
}
obj, _, err := readBody(cli.call("DELETE", "/networks/"+networkID+"/endpoints/"+serviceID+"/containers/"+containerID, nil, nil))
if err != nil {
fmt.Fprintf(cli.err, "%s", err.Error())
return err
}
if _, err := io.Copy(cli.out, bytes.NewReader(obj)); err != nil {
return err
}
return nil
}
func serviceUsage(chain string) string {
help := "Commands:\n"
for _, cmd := range serviceCommands {
help += fmt.Sprintf(" %-10.10s%s\n", cmd, cmd.description)
}
help += fmt.Sprintf("\nRun '%s service COMMAND --help' for more information on a command.", chain)
return help
}