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// Copyright 2016 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
// The setplan package contains the implementation of the juju set-plan
// command.
package setplan
import (
"encoding/json"
"net/url"
"github.com/juju/cmd"
"github.com/juju/errors"
"github.com/juju/juju/api/application"
"github.com/juju/juju/cmd/modelcmd"
"gopkg.in/juju/names.v2"
"gopkg.in/macaroon.v1"
api "github.com/juju/romulus/api/plan"
)
// authorizationClient defines the interface of an api client that
// the comand uses to create an authorization macaroon.
type authorizationClient interface {
// Authorize returns the authorization macaroon for the specified environment,
// charm url, application name and plan.
Authorize(environmentUUID, charmURL, applicationName, plan string, visitWebPage func(*url.URL) error) (*macaroon.Macaroon, error)
}
var newAuthorizationClient = func(options ...api.ClientOption) (authorizationClient, error) {
return api.NewAuthorizationClient(options...)
}
// NewSetPlanCommand returns a new command that is used to set metric credentials for a
// deployed application.
func NewSetPlanCommand() cmd.Command {
return modelcmd.Wrap(&setPlanCommand{})
}
// setPlanCommand is a command-line tool for setting
// Application.MetricCredential for development & demonstration purposes.
type setPlanCommand struct {
modelcmd.ModelCommandBase
Application string
Plan string
}
// Info implements cmd.Command.
func (c *setPlanCommand) Info() *cmd.Info {
return &cmd.Info{
Name: "set-plan",
Args: "<application name> <plan>",
Purpose: "Set the plan for an application.",
Doc: `
Set the plan for the deployed application, effective immediately.
The specified plan name must be a valid plan that is offered for this
particular charm. Use "juju list-plans <charm>" for more information.
Examples:
juju set-plan myapp example/uptime
`,
}
}
// Init implements cmd.Command.
func (c *setPlanCommand) Init(args []string) error {
if len(args) < 2 {
return errors.New("need to specify application name and plan url")
}
applicationName := args[0]
if !names.IsValidApplication(applicationName) {
return errors.Errorf("invalid application name %q", applicationName)
}
c.Plan = args[1]
c.Application = applicationName
return c.ModelCommandBase.Init(args[2:])
}
func (c *setPlanCommand) requestMetricCredentials(client *application.Client, ctx *cmd.Context) ([]byte, error) {
envUUID := client.ModelUUID()
charmURL, err := client.GetCharmURL(c.Application)
if err != nil {
return nil, errors.Trace(err)
}
hc, err := c.BakeryClient()
if err != nil {
return nil, errors.Trace(err)
}
authClient, err := newAuthorizationClient(api.HTTPClient(hc))
if err != nil {
return nil, errors.Trace(err)
}
m, err := authClient.Authorize(envUUID, charmURL.String(), c.Application, c.Plan, hc.VisitWebPage)
if err != nil {
return nil, errors.Trace(err)
}
ms := macaroon.Slice{m}
return json.Marshal(ms)
}
// Run implements cmd.Command.
func (c *setPlanCommand) Run(ctx *cmd.Context) error {
root, err := c.NewAPIRoot()
if err != nil {
return errors.Trace(err)
}
client := application.NewClient(root)
credentials, err := c.requestMetricCredentials(client, ctx)
if err != nil {
return errors.Trace(err)
}
err = client.SetMetricCredentials(c.Application, credentials)
if err != nil {
return errors.Trace(err)
}
return nil
}
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