func (c *RpcCommand) Run(ctx *cmd.Context) error {
if c.Value == "error" {
return errors.New("blam")
}
if c.Slow {
time.Sleep(testing.ShortWait)
return nil
}
ctx.Stdout.Write([]byte("eye of newt\n"))
ctx.Stderr.Write([]byte("toe of frog\n"))
return ioutil.WriteFile(ctx.AbsPath("local"), []byte(c.Value), 0644)
}
// Run connects to the specified environment and starts the charm
// upgrade process.
func (c *UpgradeCharmCommand) Run(ctx *cmd.Context) error {
conn, err := juju.NewConnFromName(c.EnvName)
if err != nil {
return err
}
defer conn.Close()
service, err := conn.State.Service(c.ServiceName)
if err != nil {
return err
}
oldURL, _ := service.CharmURL()
var newURL *charm.URL
if c.SwitchURL != "" {
// A new charm URL was explicitly specified.
conf, err := conn.State.EnvironConfig()
if err != nil {
return err
}
newURL, err = charm.InferURL(c.SwitchURL, conf.DefaultSeries())
if err != nil {
return err
}
} else {
// No new URL specified, but revision might have been.
newURL = oldURL.WithRevision(c.Revision)
}
repo, err := charm.InferRepository(newURL, ctx.AbsPath(c.RepoPath))
if err != nil {
return err
}
// If no explicit revision was set with either SwitchURL
// or Revision flags, discover the latest.
explicitRevision := true
if newURL.Revision == -1 {
explicitRevision = false
latest, err := repo.Latest(newURL)
if err != nil {
return err
}
newURL = newURL.WithRevision(latest)
}
bumpRevision := false
if *newURL == *oldURL {
if explicitRevision {
return fmt.Errorf("already running specified charm %q", newURL)
}
// Only try bumping the revision when necessary (local dir charm).
if _, isLocal := repo.(*charm.LocalRepository); !isLocal {
// TODO(dimitern): If the --force flag is set to something
// different to before, we might actually want to allow this
// case (and the other error below). LP bug #1174287
return fmt.Errorf("already running latest charm %q", newURL)
}
// This is a local repository.
if ch, err := repo.Get(newURL); err != nil {
return err
} else if _, bumpRevision = ch.(*charm.Dir); !bumpRevision {
// Only bump the revision when it's a directory.
return fmt.Errorf("cannot increment revision of charm %q: not a directory", newURL)
}
}
sch, err := conn.PutCharm(newURL, repo, bumpRevision)
if err != nil {
return err
}
return service.SetCharm(sch, c.Force)
}
func (c *PublishCommand) Run(ctx *cmd.Context) (err error) {
branch := bzr.New(ctx.AbsPath(c.CharmPath))
if _, err := os.Stat(branch.Join(".bzr")); err != nil {
return fmt.Errorf("not a charm branch: %s", branch.Location())
}
if err := branch.CheckClean(); err != nil {
return err
}
var curl *charm.URL
if c.URL == "" {
if err == nil {
loc, err := branch.PushLocation()
if err != nil {
return fmt.Errorf("no charm URL provided and cannot infer from current directory (no push location)")
}
curl, err = charm.Store.CharmURL(loc)
if err != nil {
return fmt.Errorf("cannot infer charm URL from branch location: %q", loc)
}
}
} else {
curl, err = charm.InferURL(c.URL, "")
if err != nil {
return err
}
}
pushLocation := charm.Store.BranchLocation(curl)
if c.changePushLocation != nil {
pushLocation = c.changePushLocation(pushLocation)
}
repo, err := charm.InferRepository(curl, "/not/important")
if err != nil {
return err
}
if repo != charm.Store {
return fmt.Errorf("charm URL must reference the juju charm store")
}
localDigest, err := branch.RevisionId()
if err != nil {
return fmt.Errorf("cannot obtain local digest: %v", err)
}
log.Infof("local digest is %s", localDigest)
ch, err := charm.ReadDir(branch.Location())
if err != nil {
return err
}
if ch.Meta().Name != curl.Name {
return fmt.Errorf("charm name in metadata must match name in URL: %q != %q", ch.Meta().Name, curl.Name)
}
oldEvent, err := charm.Store.Event(curl, localDigest)
if _, ok := err.(*charm.NotFoundError); ok {
oldEvent, err = charm.Store.Event(curl, "")
if _, ok := err.(*charm.NotFoundError); ok {
log.Infof("charm %s is not yet in the store", curl)
err = nil
}
}
if err != nil {
return fmt.Errorf("cannot obtain event details from the store: %s", err)
}
if oldEvent != nil && oldEvent.Digest == localDigest {
return handleEvent(ctx, curl, oldEvent)
}
log.Infof("sending charm to the charm store...")
err = branch.Push(&bzr.PushAttr{Location: pushLocation, Remember: true})
if err != nil {
return err
}
log.Infof("charm sent; waiting for it to be published...")
for {
time.Sleep(c.pollDelay)
newEvent, err := charm.Store.Event(curl, "")
if _, ok := err.(*charm.NotFoundError); ok {
continue
}
if err != nil {
return fmt.Errorf("cannot obtain event details from the store: %s", err)
}
if oldEvent != nil && oldEvent.Digest == newEvent.Digest {
continue
}
if newEvent.Digest != localDigest {
// TODO Check if the published digest is in the local history.
return fmt.Errorf("charm changed but not to local charm digest; publishing race?")
}
return handleEvent(ctx, curl, newEvent)
}
return nil
}
func (c *DeployCommand) Run(ctx *cmd.Context) error {
conn, err := juju.NewConnFromName(c.EnvName)
if err != nil {
return err
}
defer conn.Close()
conf, err := conn.State.EnvironConfig()
if err != nil {
return err
}
curl, err := charm.InferURL(c.CharmName, conf.DefaultSeries())
if err != nil {
return err
}
repo, err := charm.InferRepository(curl, ctx.AbsPath(c.RepoPath))
if err != nil {
return err
}
// TODO(fwereade) it's annoying to roundtrip the bytes through the client
// here, but it's the original behaviour and not convenient to change.
// PutCharm will always be required in some form for local charms; and we
// will need an EnsureStoreCharm method somewhere that gets the state.Charm
// for use in the following checks.
ch, err := conn.PutCharm(curl, repo, c.BumpRevision)
if err != nil {
return err
}
numUnits := c.NumUnits
if ch.Meta().Subordinate {
empty := constraints.Value{}
if c.Constraints != empty {
return errors.New("cannot use --constraints with subordinate service")
}
if numUnits == 1 && c.ToMachineSpec == "" {
numUnits = 0
} else {
return errors.New("cannot use --num-units or --to with subordinate service")
}
}
serviceName := c.ServiceName
if serviceName == "" {
serviceName = ch.Meta().Name
}
var settings charm.Settings
if c.Config.Path != "" {
configYAML, err := c.Config.Read(ctx)
if err != nil {
return err
}
settings, err = ch.Config().ParseSettingsYAML(configYAML, serviceName)
if err != nil {
return err
}
}
_, err = conn.DeployService(juju.DeployServiceParams{
ServiceName: serviceName,
Charm: ch,
NumUnits: numUnits,
ConfigSettings: settings,
Constraints: c.Constraints,
ToMachineSpec: c.ToMachineSpec,
})
return err
}