func (c *DeployCommand) deployCharm(
curl *charm.URL, series string, ctx *cmd.Context,
client *api.Client, deployer *serviceDeployer,
) error {
if c.BumpRevision {
ctx.Infof("--upgrade (or -u) is deprecated and ignored; charms are always deployed with a unique revision.")
}
charmInfo, err := client.CharmInfo(curl.String())
if err != nil {
return err
}
numUnits := c.NumUnits
if charmInfo.Meta.Subordinate {
if !constraints.IsEmpty(&c.Constraints) {
return errors.New("cannot use --constraints with subordinate service")
}
if numUnits == 1 && c.PlacementSpec == "" {
numUnits = 0
} else {
return errors.New("cannot use --num-units or --to with subordinate service")
}
}
serviceName := c.ServiceName
if serviceName == "" {
serviceName = charmInfo.Meta.Name
}
var configYAML []byte
if c.Config.Path != "" {
configYAML, err = c.Config.Read(ctx)
if err != nil {
return err
}
}
state, err := c.NewAPIRoot()
if err != nil {
return errors.Trace(err)
}
httpClient, err := c.HTTPClient()
if err != nil {
return errors.Trace(err)
}
deployInfo := DeploymentInfo{
CharmURL: curl,
ServiceName: serviceName,
EnvUUID: client.EnvironmentUUID(),
}
for _, step := range c.Steps {
err = step.RunPre(state, httpClient, deployInfo)
if err != nil {
return err
}
}
if err := deployer.serviceDeploy(serviceDeployParams{
curl.String(),
serviceName,
series,
numUnits,
string(configYAML),
c.Constraints,
c.PlacementSpec,
c.Placement,
c.Networks,
c.Storage,
}); err != nil {
return err
}
state, err = c.NewAPIRoot()
if err != nil {
return errors.Trace(err)
}
httpClient, err = c.HTTPClient()
if err != nil {
return errors.Trace(err)
}
for _, step := range c.Steps {
err = step.RunPost(state, httpClient, deployInfo)
if err != nil {
return err
}
}
return err
}