2018-11-09 09:10:41 -05:00
|
|
|
package context
|
|
|
|
|
|
|
|
import (
|
|
|
|
"bytes"
|
|
|
|
"fmt"
|
|
|
|
"text/tabwriter"
|
|
|
|
|
|
|
|
"github.com/docker/cli/cli"
|
|
|
|
"github.com/docker/cli/cli/command"
|
|
|
|
"github.com/docker/cli/cli/context/docker"
|
|
|
|
"github.com/docker/cli/cli/context/kubernetes"
|
|
|
|
"github.com/docker/cli/cli/context/store"
|
|
|
|
"github.com/pkg/errors"
|
|
|
|
"github.com/spf13/cobra"
|
|
|
|
)
|
|
|
|
|
2019-01-21 03:37:20 -05:00
|
|
|
// CreateOptions are the options used for creating a context
|
|
|
|
type CreateOptions struct {
|
|
|
|
Name string
|
|
|
|
Description string
|
|
|
|
DefaultStackOrchestrator string
|
|
|
|
Docker map[string]string
|
|
|
|
Kubernetes map[string]string
|
2019-03-22 10:20:40 -04:00
|
|
|
From string
|
2018-11-09 09:10:41 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
func longCreateDescription() string {
|
|
|
|
buf := bytes.NewBuffer(nil)
|
|
|
|
buf.WriteString("Create a context\n\nDocker endpoint config:\n\n")
|
|
|
|
tw := tabwriter.NewWriter(buf, 20, 1, 3, ' ', 0)
|
|
|
|
fmt.Fprintln(tw, "NAME\tDESCRIPTION")
|
|
|
|
for _, d := range dockerConfigKeysDescriptions {
|
|
|
|
fmt.Fprintf(tw, "%s\t%s\n", d.name, d.description)
|
|
|
|
}
|
|
|
|
tw.Flush()
|
|
|
|
buf.WriteString("\nKubernetes endpoint config:\n\n")
|
|
|
|
tw = tabwriter.NewWriter(buf, 20, 1, 3, ' ', 0)
|
|
|
|
fmt.Fprintln(tw, "NAME\tDESCRIPTION")
|
|
|
|
for _, d := range kubernetesConfigKeysDescriptions {
|
|
|
|
fmt.Fprintf(tw, "%s\t%s\n", d.name, d.description)
|
|
|
|
}
|
|
|
|
tw.Flush()
|
|
|
|
buf.WriteString("\nExample:\n\n$ docker context create my-context --description \"some description\" --docker \"host=tcp://myserver:2376,ca=~/ca-file,cert=~/cert-file,key=~/key-file\"\n")
|
|
|
|
return buf.String()
|
|
|
|
}
|
|
|
|
|
|
|
|
func newCreateCommand(dockerCli command.Cli) *cobra.Command {
|
2019-01-21 03:37:20 -05:00
|
|
|
opts := &CreateOptions{}
|
2018-11-09 09:10:41 -05:00
|
|
|
cmd := &cobra.Command{
|
|
|
|
Use: "create [OPTIONS] CONTEXT",
|
|
|
|
Short: "Create a context",
|
|
|
|
Args: cli.ExactArgs(1),
|
|
|
|
RunE: func(cmd *cobra.Command, args []string) error {
|
2019-01-21 03:37:20 -05:00
|
|
|
opts.Name = args[0]
|
|
|
|
return RunCreate(dockerCli, opts)
|
2018-11-09 09:10:41 -05:00
|
|
|
},
|
|
|
|
Long: longCreateDescription(),
|
|
|
|
}
|
|
|
|
flags := cmd.Flags()
|
2019-01-21 03:37:20 -05:00
|
|
|
flags.StringVar(&opts.Description, "description", "", "Description of the context")
|
2018-11-09 09:10:41 -05:00
|
|
|
flags.StringVar(
|
2019-01-21 03:37:20 -05:00
|
|
|
&opts.DefaultStackOrchestrator,
|
2018-11-09 09:10:41 -05:00
|
|
|
"default-stack-orchestrator", "",
|
|
|
|
"Default orchestrator for stack operations to use with this context (swarm|kubernetes|all)")
|
2019-01-21 03:37:20 -05:00
|
|
|
flags.StringToStringVar(&opts.Docker, "docker", nil, "set the docker endpoint")
|
|
|
|
flags.StringToStringVar(&opts.Kubernetes, "kubernetes", nil, "set the kubernetes endpoint")
|
2019-03-22 10:20:40 -04:00
|
|
|
flags.StringVar(&opts.From, "from", "", "create context from a named context")
|
2018-11-09 09:10:41 -05:00
|
|
|
return cmd
|
|
|
|
}
|
|
|
|
|
2019-01-21 03:37:20 -05:00
|
|
|
// RunCreate creates a Docker context
|
|
|
|
func RunCreate(cli command.Cli, o *CreateOptions) error {
|
2018-11-09 09:10:41 -05:00
|
|
|
s := cli.ContextStore()
|
2019-01-21 03:37:20 -05:00
|
|
|
if err := checkContextNameForCreation(s, o.Name); err != nil {
|
2018-11-09 09:10:41 -05:00
|
|
|
return err
|
|
|
|
}
|
2019-01-21 03:37:20 -05:00
|
|
|
stackOrchestrator, err := command.NormalizeOrchestrator(o.DefaultStackOrchestrator)
|
2018-11-09 09:10:41 -05:00
|
|
|
if err != nil {
|
|
|
|
return errors.Wrap(err, "unable to parse default-stack-orchestrator")
|
|
|
|
}
|
2019-05-13 11:22:02 -04:00
|
|
|
switch {
|
|
|
|
case o.From == "" && o.Docker == nil && o.Kubernetes == nil:
|
|
|
|
err = createFromExistingContext(s, cli.CurrentContext(), stackOrchestrator, o)
|
|
|
|
case o.From != "":
|
|
|
|
err = createFromExistingContext(s, o.From, stackOrchestrator, o)
|
|
|
|
default:
|
|
|
|
err = createNewContext(o, stackOrchestrator, cli, s)
|
|
|
|
}
|
|
|
|
if err == nil {
|
|
|
|
fmt.Fprintln(cli.Out(), o.Name)
|
|
|
|
fmt.Fprintf(cli.Err(), "Successfully created context %q\n", o.Name)
|
|
|
|
}
|
|
|
|
return err
|
2019-03-22 10:20:40 -04:00
|
|
|
}
|
|
|
|
|
2019-04-15 06:03:03 -04:00
|
|
|
func createNewContext(o *CreateOptions, stackOrchestrator command.Orchestrator, cli command.Cli, s store.Writer) error {
|
2019-01-21 03:37:20 -05:00
|
|
|
if o.Docker == nil {
|
2018-11-09 09:10:41 -05:00
|
|
|
return errors.New("docker endpoint configuration is required")
|
|
|
|
}
|
2019-03-22 10:20:40 -04:00
|
|
|
contextMetadata := newContextMetadata(stackOrchestrator, o)
|
2018-11-09 09:10:41 -05:00
|
|
|
contextTLSData := store.ContextTLSData{
|
|
|
|
Endpoints: make(map[string]store.EndpointTLSData),
|
|
|
|
}
|
2019-01-21 03:37:20 -05:00
|
|
|
dockerEP, dockerTLS, err := getDockerEndpointMetadataAndTLS(cli, o.Docker)
|
2018-11-09 09:10:41 -05:00
|
|
|
if err != nil {
|
|
|
|
return errors.Wrap(err, "unable to create docker endpoint config")
|
|
|
|
}
|
|
|
|
contextMetadata.Endpoints[docker.DockerEndpoint] = dockerEP
|
|
|
|
if dockerTLS != nil {
|
|
|
|
contextTLSData.Endpoints[docker.DockerEndpoint] = *dockerTLS
|
|
|
|
}
|
2019-01-21 03:37:20 -05:00
|
|
|
if o.Kubernetes != nil {
|
|
|
|
kubernetesEP, kubernetesTLS, err := getKubernetesEndpointMetadataAndTLS(cli, o.Kubernetes)
|
2018-11-09 09:10:41 -05:00
|
|
|
if err != nil {
|
|
|
|
return errors.Wrap(err, "unable to create kubernetes endpoint config")
|
|
|
|
}
|
|
|
|
if kubernetesEP == nil && stackOrchestrator.HasKubernetes() {
|
|
|
|
return errors.Errorf("cannot specify orchestrator %q without configuring a Kubernetes endpoint", stackOrchestrator)
|
|
|
|
}
|
|
|
|
if kubernetesEP != nil {
|
|
|
|
contextMetadata.Endpoints[kubernetes.KubernetesEndpoint] = kubernetesEP
|
|
|
|
}
|
|
|
|
if kubernetesTLS != nil {
|
|
|
|
contextTLSData.Endpoints[kubernetes.KubernetesEndpoint] = *kubernetesTLS
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if err := validateEndpointsAndOrchestrator(contextMetadata); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2019-04-18 09:12:30 -04:00
|
|
|
if err := s.CreateOrUpdate(contextMetadata); err != nil {
|
2018-11-09 09:10:41 -05:00
|
|
|
return err
|
|
|
|
}
|
2019-04-18 09:12:30 -04:00
|
|
|
if err := s.ResetTLSMaterial(o.Name, &contextTLSData); err != nil {
|
2018-11-09 09:10:41 -05:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2019-04-15 06:03:03 -04:00
|
|
|
func checkContextNameForCreation(s store.Reader, name string) error {
|
2018-11-09 09:10:41 -05:00
|
|
|
if err := validateContextName(name); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2019-04-18 09:12:30 -04:00
|
|
|
if _, err := s.GetMetadata(name); !store.IsErrContextDoesNotExist(err) {
|
2018-11-09 09:10:41 -05:00
|
|
|
if err != nil {
|
|
|
|
return errors.Wrap(err, "error while getting existing contexts")
|
|
|
|
}
|
|
|
|
return errors.Errorf("context %q already exists", name)
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
2019-03-22 10:20:40 -04:00
|
|
|
|
2019-04-15 06:03:03 -04:00
|
|
|
func createFromExistingContext(s store.ReaderWriter, fromContextName string, stackOrchestrator command.Orchestrator, o *CreateOptions) error {
|
2019-03-22 10:20:40 -04:00
|
|
|
if len(o.Docker) != 0 || len(o.Kubernetes) != 0 {
|
|
|
|
return errors.New("cannot use --docker or --kubernetes flags when --from is set")
|
|
|
|
}
|
|
|
|
reader := store.Export(fromContextName, &descriptionAndOrchestratorStoreDecorator{
|
2019-04-15 06:03:03 -04:00
|
|
|
Reader: s,
|
2019-03-22 10:20:40 -04:00
|
|
|
description: o.Description,
|
|
|
|
orchestrator: stackOrchestrator,
|
|
|
|
})
|
|
|
|
defer reader.Close()
|
|
|
|
return store.Import(o.Name, s, reader)
|
|
|
|
}
|
|
|
|
|
|
|
|
type descriptionAndOrchestratorStoreDecorator struct {
|
2019-04-15 06:03:03 -04:00
|
|
|
store.Reader
|
2019-03-22 10:20:40 -04:00
|
|
|
description string
|
|
|
|
orchestrator command.Orchestrator
|
|
|
|
}
|
|
|
|
|
2019-04-18 09:12:30 -04:00
|
|
|
func (d *descriptionAndOrchestratorStoreDecorator) GetMetadata(name string) (store.Metadata, error) {
|
|
|
|
c, err := d.Reader.GetMetadata(name)
|
2019-03-22 10:20:40 -04:00
|
|
|
if err != nil {
|
|
|
|
return c, err
|
|
|
|
}
|
|
|
|
typedContext, err := command.GetDockerContext(c)
|
|
|
|
if err != nil {
|
|
|
|
return c, err
|
|
|
|
}
|
|
|
|
if d.description != "" {
|
|
|
|
typedContext.Description = d.description
|
|
|
|
}
|
|
|
|
if d.orchestrator != command.Orchestrator("") {
|
|
|
|
typedContext.StackOrchestrator = d.orchestrator
|
|
|
|
}
|
|
|
|
c.Metadata = typedContext
|
|
|
|
return c, nil
|
|
|
|
}
|
|
|
|
|
2019-04-18 09:12:30 -04:00
|
|
|
func newContextMetadata(stackOrchestrator command.Orchestrator, o *CreateOptions) store.Metadata {
|
|
|
|
return store.Metadata{
|
2019-03-22 10:20:40 -04:00
|
|
|
Endpoints: make(map[string]interface{}),
|
|
|
|
Metadata: command.DockerContext{
|
|
|
|
Description: o.Description,
|
|
|
|
StackOrchestrator: stackOrchestrator,
|
|
|
|
},
|
|
|
|
Name: o.Name,
|
|
|
|
}
|
|
|
|
}
|