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Signed-off-by: Simon Ferquel <simon.ferquel@docker.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package context | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "regexp" | ||
|
|
||
| "github.com/docker/cli/cli" | ||
| "github.com/docker/cli/cli/command" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| // NewContextCommand returns the context cli subcommand | ||
| func NewContextCommand(dockerCli command.Cli) *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "context", | ||
| Short: "Manage contexts", | ||
| Args: cli.NoArgs, | ||
| RunE: command.ShowHelp(dockerCli.Err()), | ||
| } | ||
| cmd.AddCommand( | ||
| newCreateCommand(dockerCli), | ||
| newListCommand(dockerCli), | ||
| newUseCommand(dockerCli), | ||
| newExportCommand(dockerCli), | ||
| newImportCommand(dockerCli), | ||
| newRemoveCommand(dockerCli), | ||
| newUpdateCommand(dockerCli), | ||
| newInspectCommand(dockerCli), | ||
| ) | ||
| return cmd | ||
| } | ||
|
|
||
| const restrictedNamePattern = "^[a-zA-Z0-9][a-zA-Z0-9_.+-]+$" | ||
|
|
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| var restrictedNameRegEx = regexp.MustCompile(restrictedNamePattern) | ||
|
|
||
| func validateContextName(name string) error { | ||
| if name == "" { | ||
| return errors.New("context name cannot be empty") | ||
| } | ||
| if name == "default" { | ||
| return errors.New(`"default" is a reserved context name`) | ||
| } | ||
| if !restrictedNameRegEx.MatchString(name) { | ||
| return fmt.Errorf("context name %q is invalid, names are validated against regexp %q", name, restrictedNamePattern) | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| package context | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "text/tabwriter" | ||
|
|
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| "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" | ||
| ) | ||
|
|
||
| type createOptions struct { | ||
| name string | ||
| description string | ||
| defaultStackOrchestrator string | ||
| docker map[string]string | ||
| kubernetes map[string]string | ||
| } | ||
|
|
||
| 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 { | ||
| opts := &createOptions{} | ||
| cmd := &cobra.Command{ | ||
| Use: "create [OPTIONS] CONTEXT", | ||
| Short: "Create a context", | ||
| Args: cli.ExactArgs(1), | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| opts.name = args[0] | ||
| return runCreate(dockerCli, opts) | ||
| }, | ||
| Long: longCreateDescription(), | ||
| } | ||
| flags := cmd.Flags() | ||
| flags.StringVar(&opts.description, "description", "", "Description of the context") | ||
| flags.StringVar( | ||
| &opts.defaultStackOrchestrator, | ||
| "default-stack-orchestrator", "", | ||
| "Default orchestrator for stack operations to use with this context (swarm|kubernetes|all)") | ||
| flags.StringToStringVar(&opts.docker, "docker", nil, "set the docker endpoint") | ||
| flags.StringToStringVar(&opts.kubernetes, "kubernetes", nil, "set the kubernetes endpoint") | ||
| return cmd | ||
| } | ||
|
|
||
| func runCreate(cli command.Cli, o *createOptions) error { | ||
| s := cli.ContextStore() | ||
| if err := checkContextNameForCreation(s, o.name); err != nil { | ||
| return err | ||
| } | ||
| stackOrchestrator, err := command.NormalizeOrchestrator(o.defaultStackOrchestrator) | ||
| if err != nil { | ||
| return errors.Wrap(err, "unable to parse default-stack-orchestrator") | ||
| } | ||
| contextMetadata := store.ContextMetadata{ | ||
| Endpoints: make(map[string]interface{}), | ||
| Metadata: command.DockerContext{ | ||
| Description: o.description, | ||
| StackOrchestrator: stackOrchestrator, | ||
| }, | ||
| Name: o.name, | ||
| } | ||
| if o.docker == nil { | ||
| return errors.New("docker endpoint configuration is required") | ||
| } | ||
| contextTLSData := store.ContextTLSData{ | ||
| Endpoints: make(map[string]store.EndpointTLSData), | ||
| } | ||
| dockerEP, dockerTLS, err := getDockerEndpointMetadataAndTLS(cli, o.docker) | ||
| 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 | ||
| } | ||
| if o.kubernetes != nil { | ||
| kubernetesEP, kubernetesTLS, err := getKubernetesEndpointMetadataAndTLS(cli, o.kubernetes) | ||
| 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 | ||
| } | ||
| if err := s.CreateOrUpdateContext(contextMetadata); err != nil { | ||
| return err | ||
| } | ||
| if err := s.ResetContextTLSMaterial(o.name, &contextTLSData); err != nil { | ||
| return err | ||
| } | ||
| fmt.Fprintln(cli.Out(), o.name) | ||
| fmt.Fprintf(cli.Err(), "Successfully created context %q\n", o.name) | ||
| return nil | ||
| } | ||
|
|
||
| func checkContextNameForCreation(s store.Store, name string) error { | ||
| if err := validateContextName(name); err != nil { | ||
| return err | ||
| } | ||
| if _, err := s.GetContextMetadata(name); !store.IsErrContextDoesNotExist(err) { | ||
| if err != nil { | ||
| return errors.Wrap(err, "error while getting existing contexts") | ||
| } | ||
| return errors.Errorf("context %q already exists", name) | ||
| } | ||
| return nil | ||
| } |
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