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/
defaultcredential.go
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/
defaultcredential.go
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// Copyright 2016 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package cloud
import (
"github.com/juju/cmd"
"github.com/juju/errors"
jujucloud "github.com/juju/juju/cloud"
jujucmd "github.com/juju/juju/cmd"
"github.com/juju/juju/cmd/juju/common"
"github.com/juju/juju/jujuclient"
)
var usageSetDefaultCredentialSummary = `
Sets local default credentials for a cloud.`[1:]
var usageSetDefaultCredentialDetails = `
The default credentials are specified with a "credential name".
A credential name is created during the process of adding credentials either
via `[1:] + "`juju add-credential` or `juju autoload-credentials`" + `.
Credential names can be listed with ` + "`juju credentials`" + `.
This command sets a locally stored credential to be used as a default.
Default credentials avoid the need to specify a particular set of
credentials when more than one are available for a given cloud.
Examples:
juju set-default-credential google credential_name
See also:
credentials
add-credential
remove-credential
autoload-credentials`
type setDefaultCredentialCommand struct {
cmd.CommandBase
store jujuclient.CredentialStore
cloud string
credential string
}
// NewSetDefaultCredentialCommand returns a command to set the default credential for a cloud.
func NewSetDefaultCredentialCommand() cmd.Command {
return &setDefaultCredentialCommand{
store: jujuclient.NewFileCredentialStore(),
}
}
func (c *setDefaultCredentialCommand) Info() *cmd.Info {
return jujucmd.Info(&cmd.Info{
Name: "set-default-credential",
Args: "<cloud name> <credential name>",
Purpose: usageSetDefaultCredentialSummary,
Doc: usageSetDefaultCredentialDetails,
})
}
func (c *setDefaultCredentialCommand) Init(args []string) (err error) {
if len(args) < 2 {
return errors.New("Usage: juju set-default-credential <cloud-name> <credential-name>")
}
c.cloud = args[0]
c.credential = args[1]
return cmd.CheckEmpty(args[2:])
}
func hasCredential(credential string, credentials map[string]jujucloud.Credential) bool {
for c := range credentials {
if c == credential {
return true
}
}
return false
}
func (c *setDefaultCredentialCommand) Run(ctxt *cmd.Context) error {
if _, err := common.CloudOrProvider(c.cloud, jujucloud.CloudByName); err != nil {
return err
}
cred, err := c.store.CredentialForCloud(c.cloud)
if errors.IsNotFound(err) {
cred = &jujucloud.CloudCredential{}
} else if err != nil {
return err
}
if !hasCredential(c.credential, cred.AuthCredentials) {
return errors.NotValidf("credential %q for cloud %s", c.credential, c.cloud)
}
cred.DefaultCredential = c.credential
if err := c.store.UpdateCredential(c.cloud, *cred); err != nil {
return err
}
ctxt.Infof("Local credential %q is set to be default for %q for this client.", c.credential, c.cloud)
return nil
}