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Viewing changes to src/launchpad.net/juju-core/cmd/juju/unset.go

  • Committer: Package Import Robot
  • Author(s): James Page
  • Date: 2013-09-03 14:22:22 UTC
  • mfrom: (1.1.7)
  • Revision ID: package-import@ubuntu.com-20130903142222-9mes2r8wqr0bs7lp
Tags: 1.13.3-0ubuntu1
New upstream point release.

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src/launchpad.net/juju-core/cmd/juju/unset.go
 
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// Copyright 2012, 2013 Canonical Ltd.
 
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// Licensed under the AGPLv3, see LICENCE file for details.
 
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package main
 
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import (
 
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        "errors"
 
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        "launchpad.net/gnuflag"
 
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        "launchpad.net/juju-core/charm"
 
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        "launchpad.net/juju-core/cmd"
 
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        "launchpad.net/juju-core/juju"
 
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)
 
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// UnsetCommand sets configuration values of a service back
 
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// to their default.
 
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type UnsetCommand struct {
 
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        cmd.EnvCommandBase
 
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        ServiceName string
 
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        Options     []string
 
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}
 
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const unsetDoc = `
 
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Set one or more configuration options for the specified service
 
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to their default. See also the set commmand to set one or more 
 
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configuration options for a specified service.
 
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`
 
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func (c *UnsetCommand) Info() *cmd.Info {
 
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        return &cmd.Info{
 
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                Name:    "unset",
 
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                Args:    "<service> name ...",
 
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                Purpose: "set service config options back to their default",
 
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                Doc:     unsetDoc,
 
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        }
 
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}
 
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func (c *UnsetCommand) SetFlags(f *gnuflag.FlagSet) {
 
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        c.EnvCommandBase.SetFlags(f)
 
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}
 
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func (c *UnsetCommand) Init(args []string) error {
 
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        if len(args) == 0 {
 
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                return errors.New("no service name specified")
 
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        }
 
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        c.ServiceName = args[0]
 
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        c.Options = args[1:]
 
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        return nil
 
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}
 
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// Run resets the configuration of a service.
 
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func (c *UnsetCommand) Run(ctx *cmd.Context) error {
 
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        conn, err := juju.NewConnFromName(c.EnvName)
 
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        if err != nil {
 
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                return err
 
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        }
 
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        defer conn.Close()
 
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        service, err := conn.State.Service(c.ServiceName)
 
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        if err != nil {
 
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                return err
 
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        }
 
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        if len(c.Options) > 0 {
 
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                settings := make(charm.Settings)
 
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                for _, option := range c.Options {
 
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                        settings[option] = nil
 
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                }
 
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                return service.UpdateConfigSettings(settings)
 
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        } else {
 
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                return nil
 
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        }
 
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}