github.com/xeptore/docker-cli@v20.10.14+incompatible/cli/command/context/update.go (about) 1 package context 2 3 import ( 4 "bytes" 5 "fmt" 6 "text/tabwriter" 7 8 "github.com/docker/cli/cli" 9 "github.com/docker/cli/cli/command" 10 "github.com/docker/cli/cli/context/docker" 11 "github.com/docker/cli/cli/context/kubernetes" 12 "github.com/docker/cli/cli/context/store" 13 "github.com/pkg/errors" 14 "github.com/spf13/cobra" 15 ) 16 17 // UpdateOptions are the options used to update a context 18 type UpdateOptions struct { 19 Name string 20 Description string 21 DefaultStackOrchestrator string 22 Docker map[string]string 23 Kubernetes map[string]string 24 } 25 26 func longUpdateDescription() string { 27 buf := bytes.NewBuffer(nil) 28 buf.WriteString("Update a context\n\nDocker endpoint config:\n\n") 29 tw := tabwriter.NewWriter(buf, 20, 1, 3, ' ', 0) 30 fmt.Fprintln(tw, "NAME\tDESCRIPTION") 31 for _, d := range dockerConfigKeysDescriptions { 32 fmt.Fprintf(tw, "%s\t%s\n", d.name, d.description) 33 } 34 tw.Flush() 35 buf.WriteString("\nKubernetes endpoint config:\n\n") 36 tw = tabwriter.NewWriter(buf, 20, 1, 3, ' ', 0) 37 fmt.Fprintln(tw, "NAME\tDESCRIPTION") 38 for _, d := range kubernetesConfigKeysDescriptions { 39 fmt.Fprintf(tw, "%s\t%s\n", d.name, d.description) 40 } 41 tw.Flush() 42 buf.WriteString("\nExample:\n\n$ docker context update my-context --description \"some description\" --docker \"host=tcp://myserver:2376,ca=~/ca-file,cert=~/cert-file,key=~/key-file\"\n") 43 return buf.String() 44 } 45 46 func newUpdateCommand(dockerCli command.Cli) *cobra.Command { 47 opts := &UpdateOptions{} 48 cmd := &cobra.Command{ 49 Use: "update [OPTIONS] CONTEXT", 50 Short: "Update a context", 51 Args: cli.ExactArgs(1), 52 RunE: func(cmd *cobra.Command, args []string) error { 53 opts.Name = args[0] 54 return RunUpdate(dockerCli, opts) 55 }, 56 Long: longUpdateDescription(), 57 } 58 flags := cmd.Flags() 59 flags.StringVar(&opts.Description, "description", "", "Description of the context") 60 flags.StringVar( 61 &opts.DefaultStackOrchestrator, 62 "default-stack-orchestrator", "", 63 "Default orchestrator for stack operations to use with this context (swarm|kubernetes|all)") 64 flags.SetAnnotation("default-stack-orchestrator", "deprecated", nil) 65 flags.StringToStringVar(&opts.Docker, "docker", nil, "set the docker endpoint") 66 flags.StringToStringVar(&opts.Kubernetes, "kubernetes", nil, "set the kubernetes endpoint") 67 flags.SetAnnotation("kubernetes", "kubernetes", nil) 68 flags.SetAnnotation("kubernetes", "deprecated", nil) 69 return cmd 70 } 71 72 // RunUpdate updates a Docker context 73 func RunUpdate(cli command.Cli, o *UpdateOptions) error { 74 if err := store.ValidateContextName(o.Name); err != nil { 75 return err 76 } 77 s := cli.ContextStore() 78 c, err := s.GetMetadata(o.Name) 79 if err != nil { 80 return err 81 } 82 dockerContext, err := command.GetDockerContext(c) 83 if err != nil { 84 return err 85 } 86 if o.DefaultStackOrchestrator != "" { 87 stackOrchestrator, err := command.NormalizeOrchestrator(o.DefaultStackOrchestrator) 88 if err != nil { 89 return errors.Wrap(err, "unable to parse default-stack-orchestrator") 90 } 91 dockerContext.StackOrchestrator = stackOrchestrator 92 } 93 if o.Description != "" { 94 dockerContext.Description = o.Description 95 } 96 97 c.Metadata = dockerContext 98 99 tlsDataToReset := make(map[string]*store.EndpointTLSData) 100 101 if o.Docker != nil { 102 dockerEP, dockerTLS, err := getDockerEndpointMetadataAndTLS(cli, o.Docker) 103 if err != nil { 104 return errors.Wrap(err, "unable to create docker endpoint config") 105 } 106 c.Endpoints[docker.DockerEndpoint] = dockerEP 107 tlsDataToReset[docker.DockerEndpoint] = dockerTLS 108 } 109 if o.Kubernetes != nil { 110 kubernetesEP, kubernetesTLS, err := getKubernetesEndpointMetadataAndTLS(cli, o.Kubernetes) 111 if err != nil { 112 return errors.Wrap(err, "unable to create kubernetes endpoint config") 113 } 114 if kubernetesEP == nil { 115 delete(c.Endpoints, kubernetes.KubernetesEndpoint) 116 } else { 117 c.Endpoints[kubernetes.KubernetesEndpoint] = kubernetesEP 118 tlsDataToReset[kubernetes.KubernetesEndpoint] = kubernetesTLS 119 } 120 } 121 if err := validateEndpointsAndOrchestrator(c); err != nil { 122 return err 123 } 124 if err := s.CreateOrUpdate(c); err != nil { 125 return err 126 } 127 for ep, tlsData := range tlsDataToReset { 128 if err := s.ResetEndpointTLSMaterial(o.Name, ep, tlsData); err != nil { 129 return err 130 } 131 } 132 133 fmt.Fprintln(cli.Out(), o.Name) 134 fmt.Fprintf(cli.Err(), "Successfully updated context %q\n", o.Name) 135 return nil 136 } 137 138 func validateEndpointsAndOrchestrator(c store.Metadata) error { 139 dockerContext, err := command.GetDockerContext(c) 140 if err != nil { 141 return err 142 } 143 if _, ok := c.Endpoints[kubernetes.KubernetesEndpoint]; !ok && dockerContext.StackOrchestrator.HasKubernetes() { 144 return errors.Errorf("cannot specify orchestrator %q without configuring a Kubernetes endpoint", dockerContext.StackOrchestrator) 145 } 146 return nil 147 }