func (c *DeployCommand) handleResources(serviceName string, metaResources map[string]charmresource.Meta) (map[string]string, error) {
if len(c.Resources) == 0 && len(metaResources) == 0 {
return nil, nil
}
api, err := c.NewAPIRoot()
if err != nil {
return nil, errors.Trace(err)
}
ids, err := resourceadapters.DeployResources(serviceName, c.Resources, metaResources, api)
if err != nil {
return nil, errors.Trace(err)
}
return ids, nil
}
func handleResources(c APICmd, resources map[string]string, serviceName string, chID charmstore.CharmID, csMac *macaroon.Macaroon, metaResources map[string]charmresource.Meta) (map[string]string, error) {
if len(resources) == 0 && len(metaResources) == 0 {
return nil, nil
}
api, err := c.NewAPIRoot()
if err != nil {
return nil, errors.Trace(err)
}
ids, err := resourceadapters.DeployResources(serviceName, chID, csMac, resources, metaResources, api)
if err != nil {
return nil, errors.Trace(err)
}
return ids, nil
}
// upgradeCharm upgrades the charm for the given application to the given charm id.
// If the application is already deployed using the given charm id, do nothing.
// This function returns an error if the existing charm and the target one are
// incompatible, meaning an upgrade from one to the other is not allowed.
func (h *bundleHandler) upgradeCharm(
api DeployAPI,
applicationName string,
chID charmstore.CharmID,
csMac *macaroon.Macaroon,
resources map[string]string,
) error {
id := chID.URL.String()
existing, err := h.api.GetCharmURL(applicationName)
if err != nil {
return errors.Annotatef(err, "cannot retrieve info for application %q", applicationName)
}
if existing.String() == id {
h.log.Infof("reusing application %s (charm: %s)", applicationName, id)
return nil
}
url, err := charm.ParseURL(id)
if err != nil {
return errors.Annotatef(err, "cannot parse charm URL %q", id)
}
chID.URL = url
if url.WithRevision(-1).Path() != existing.WithRevision(-1).Path() {
return errors.Errorf("bundle charm %q is incompatible with existing charm %q", id, existing)
}
charmsClient := charms.NewClient(api)
resourceLister, err := resourceadapters.NewAPIClient(api)
if err != nil {
return errors.Trace(err)
}
filtered, err := getUpgradeResources(charmsClient, resourceLister, applicationName, url, resources)
if err != nil {
return errors.Trace(err)
}
var resNames2IDs map[string]string
if len(filtered) != 0 {
resNames2IDs, err = resourceadapters.DeployResources(
applicationName,
chID,
csMac,
resources,
filtered,
api,
)
if err != nil {
return errors.Trace(err)
}
}
cfg := application.SetCharmConfig{
ApplicationName: applicationName,
CharmID: chID,
ResourceIDs: resNames2IDs,
}
if err := h.api.SetCharm(cfg); err != nil {
return errors.Annotatef(err, "cannot upgrade charm to %q", id)
}
h.log.Infof("upgraded charm for existing application %s (from %s to %s)", applicationName, existing, id)
for resName := range resNames2IDs {
h.log.Infof("added resource %s", resName)
}
return nil
}
func (c *DeployCommand) deployCharm(
id charmstore.CharmID,
csMac *macaroon.Macaroon,
series string,
ctx *cmd.Context,
apiRoot DeployAPI,
) (rErr error) {
charmInfo, err := apiRoot.CharmInfo(id.URL.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 application")
}
if numUnits == 1 && c.PlacementSpec == "" {
numUnits = 0
} else {
return errors.New("cannot use --num-units or --to with subordinate application")
}
}
serviceName := c.ApplicationName
if serviceName == "" {
serviceName = charmInfo.Meta.Name
}
var configYAML []byte
if c.Config.Path != "" {
configYAML, err = c.Config.Read(ctx)
if err != nil {
return errors.Trace(err)
}
}
bakeryClient, err := c.BakeryClient()
if err != nil {
return errors.Trace(err)
}
uuid, ok := apiRoot.ModelUUID()
if !ok {
return errors.New("API connection is controller-only (should never happen)")
}
deployInfo := DeploymentInfo{
CharmID: id,
ApplicationName: serviceName,
ModelUUID: uuid,
CharmInfo: charmInfo,
}
for _, step := range c.Steps {
err = step.RunPre(apiRoot, bakeryClient, ctx, deployInfo)
if err != nil {
return errors.Trace(err)
}
}
defer func() {
for _, step := range c.Steps {
err = errors.Trace(step.RunPost(apiRoot, bakeryClient, ctx, deployInfo, rErr))
if err != nil {
rErr = err
}
}
}()
if id.URL != nil && id.URL.Schema != "local" && len(charmInfo.Meta.Terms) > 0 {
ctx.Infof("Deployment under prior agreement to terms: %s",
strings.Join(charmInfo.Meta.Terms, " "))
}
ids, err := resourceadapters.DeployResources(
serviceName,
id,
csMac,
c.Resources,
charmInfo.Meta.Resources,
apiRoot,
)
if err != nil {
return errors.Trace(err)
}
return errors.Trace(apiRoot.Deploy(application.DeployArgs{
CharmID: id,
Cons: c.Constraints,
ApplicationName: serviceName,
Series: series,
NumUnits: numUnits,
ConfigYAML: string(configYAML),
Placement: c.Placement,
Storage: c.Storage,
Resources: ids,
EndpointBindings: c.Bindings,
}))
}
// addService deploys or update an application with no units. Service options are
// also set or updated.
func (h *bundleHandler) addService(
api DeployAPI,
id string,
p bundlechanges.AddApplicationParams,
chID charmstore.CharmID,
csMac *macaroon.Macaroon,
) error {
h.results[id] = p.Application
ch := chID.URL.String()
// Handle application configuration.
configYAML := ""
if len(p.Options) > 0 {
config, err := yaml.Marshal(map[string]map[string]interface{}{p.Application: p.Options})
if err != nil {
return errors.Annotatef(err, "cannot marshal options for application %q", p.Application)
}
configYAML = string(config)
}
// Handle application constraints.
cons, err := constraints.Parse(p.Constraints)
if err != nil {
// This should never happen, as the bundle is already verified.
return errors.Annotate(err, "invalid constraints for application")
}
storageConstraints := h.bundleStorage[p.Application]
if len(p.Storage) > 0 {
if storageConstraints == nil {
storageConstraints = make(map[string]storage.Constraints)
}
for k, v := range p.Storage {
if _, ok := storageConstraints[k]; ok {
// Storage constraints overridden
// on the command line.
continue
}
cons, err := storage.ParseConstraints(v)
if err != nil {
return errors.Annotate(err, "invalid storage constraints")
}
storageConstraints[k] = cons
}
}
resources := make(map[string]string)
for resName, revision := range p.Resources {
resources[resName] = fmt.Sprint(revision)
}
charmInfo, err := h.api.CharmInfo(ch)
if err != nil {
return err
}
resNames2IDs, err := resourceadapters.DeployResources(
p.Application,
chID,
csMac,
resources,
charmInfo.Meta.Resources,
api,
)
if err != nil {
return errors.Trace(err)
}
// Figure out what series we need to deploy with.
conf, err := getModelConfig(h.api)
if err != nil {
return err
}
supportedSeries := charmInfo.Meta.Series
if len(supportedSeries) == 0 && chID.URL.Series != "" {
supportedSeries = []string{chID.URL.Series}
}
selector := seriesSelector{
seriesFlag: p.Series,
charmURLSeries: chID.URL.Series,
supportedSeries: supportedSeries,
conf: conf,
fromBundle: true,
}
series, err := selector.charmSeries()
if err != nil {
return errors.Trace(err)
}
// Deploy the application.
logger.Debugf("application %s is deploying (charm %s)", p.Application, ch)
h.log.Infof("Deploying charm %q", ch)
if err := api.Deploy(application.DeployArgs{
CharmID: chID,
Cons: cons,
ApplicationName: p.Application,
Series: series,
ConfigYAML: configYAML,
Storage: storageConstraints,
Resources: resNames2IDs,
EndpointBindings: p.EndpointBindings,
}); err == nil {
for resName := range resNames2IDs {
h.log.Infof("added resource %s", resName)
}
return nil
} else if !isErrServiceExists(err) {
return errors.Annotatef(err, "cannot deploy application %q", p.Application)
}
// The application is already deployed in the environment: check that its
// charm is compatible with the one declared in the bundle. If it is,
// reuse the existing application or upgrade to a specified revision.
// Exit with an error otherwise.
if err := h.upgradeCharm(api, p.Application, chID, csMac, resources); err != nil {
return errors.Annotatef(err, "cannot upgrade application %q", p.Application)
}
// Update application configuration.
if configYAML != "" {
if err := h.api.Update(params.ApplicationUpdate{
ApplicationName: p.Application,
SettingsYAML: configYAML,
}); err != nil {
// This should never happen as possible errors are already returned
// by the application Deploy call above.
return errors.Annotatef(err, "cannot update options for application %q", p.Application)
}
h.log.Infof("configuration updated for application %s", p.Application)
}
// Update application constraints.
if p.Constraints != "" {
if err := h.api.SetConstraints(p.Application, cons); err != nil {
// This should never happen, as the bundle is already verified.
return errors.Annotatef(err, "cannot update constraints for application %q", p.Application)
}
h.log.Infof("constraints applied for application %s", p.Application)
}
return nil
}
