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authmethod_create.go
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authmethod_create.go
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package authmethodcreate
import (
"flag"
"fmt"
"io"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/command/acl"
"github.com/hashicorp/consul/command/flags"
"github.com/hashicorp/consul/command/helpers"
"github.com/mitchellh/cli"
)
func New(ui cli.Ui) *cmd {
c := &cmd{UI: ui}
c.init()
return c
}
type cmd struct {
UI cli.Ui
flags *flag.FlagSet
http *flags.HTTPFlags
help string
authMethodType string
name string
description string
k8sHost string
k8sCACert string
k8sServiceAccountJWT string
showMeta bool
testStdin io.Reader
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.flags.BoolVar(
&c.showMeta,
"meta",
false,
"Indicates that auth method metadata such "+
"as the raft indices should be shown for each entry.",
)
c.flags.StringVar(
&c.authMethodType,
"type",
"",
"The new auth method's type. This flag is required.",
)
c.flags.StringVar(
&c.name,
"name",
"",
"The new auth method's name. This flag is required.",
)
c.flags.StringVar(
&c.description,
"description",
"",
"A description of the auth method.",
)
c.flags.StringVar(
&c.k8sHost,
"kubernetes-host",
"",
"Address of the Kubernetes API server. This flag is required for type=kubernetes.",
)
c.flags.StringVar(
&c.k8sCACert,
"kubernetes-ca-cert",
"",
"PEM encoded CA cert for use by the TLS client used to talk with the "+
"Kubernetes API. May be prefixed with '@' to indicate that the "+
"value is a file path to load the cert from. "+
"This flag is required for type=kubernetes.",
)
c.flags.StringVar(
&c.k8sServiceAccountJWT,
"kubernetes-service-account-jwt",
"",
"A Kubernetes service account JWT used to access the TokenReview API to "+
"validate other JWTs during login. "+
"This flag is required for type=kubernetes.",
)
c.http = &flags.HTTPFlags{}
flags.Merge(c.flags, c.http.ClientFlags())
flags.Merge(c.flags, c.http.ServerFlags())
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
if c.authMethodType == "" {
c.UI.Error(fmt.Sprintf("Missing required '-type' flag"))
c.UI.Error(c.Help())
return 1
} else if c.name == "" {
c.UI.Error(fmt.Sprintf("Missing required '-name' flag"))
c.UI.Error(c.Help())
return 1
}
client, err := c.http.APIClient()
if err != nil {
c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
return 1
}
newAuthMethod := &api.ACLAuthMethod{
Type: c.authMethodType,
Name: c.name,
Description: c.description,
}
if c.authMethodType == "kubernetes" {
if c.k8sHost == "" {
c.UI.Error(fmt.Sprintf("Missing required '-kubernetes-host' flag"))
return 1
} else if c.k8sCACert == "" {
c.UI.Error(fmt.Sprintf("Missing required '-kubernetes-ca-cert' flag"))
return 1
} else if c.k8sServiceAccountJWT == "" {
c.UI.Error(fmt.Sprintf("Missing required '-kubernetes-service-account-jwt' flag"))
return 1
}
c.k8sCACert, err = helpers.LoadDataSource(c.k8sCACert, c.testStdin)
if err != nil {
c.UI.Error(fmt.Sprintf("Invalid '-kubernetes-ca-cert' value: %v", err))
return 1
} else if c.k8sCACert == "" {
c.UI.Error(fmt.Sprintf("Kubernetes CA Cert is empty"))
return 1
}
newAuthMethod.Config = map[string]interface{}{
"Host": c.k8sHost,
"CACert": c.k8sCACert,
"ServiceAccountJWT": c.k8sServiceAccountJWT,
}
}
method, _, err := client.ACL().AuthMethodCreate(newAuthMethod, nil)
if err != nil {
c.UI.Error(fmt.Sprintf("Failed to create new auth method: %v", err))
return 1
}
acl.PrintAuthMethod(method, c.UI, c.showMeta)
return 0
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return flags.Usage(c.help, nil)
}
const synopsis = "Create an ACL auth method"
const help = `
Usage: consul acl auth-method create -name NAME -type TYPE [options]
Create a new auth method:
$ consul acl auth-method create -type "kubernetes" \
-name "my-k8s" \
-description "This is an example kube method" \
-kubernetes-host "https://apiserver.example.com:8443" \
-kubernetes-ca-file /path/to/kube.ca.crt \
-kubernetes-service-account-jwt "JWT_CONTENTS"
`