// charmSeries determine what series to use with a charm.
// Order of preference is:
// - user requested or defined by bundle when deploying
// - default from charm metadata supported series
// - model default
// - charm store default
func charmSeries(
requestedSeries, seriesFromCharm string,
supportedSeries []string,
force bool,
conf *config.Config,
fromBundle bool,
) (string, string, error) {
// User has requested a series and we have a new charm with series in metadata.
if requestedSeries != "" && seriesFromCharm == "" {
if !force && !isSeriesSupported(requestedSeries, supportedSeries) {
return "", "", charm.NewUnsupportedSeriesError(requestedSeries, supportedSeries)
}
if fromBundle {
return requestedSeries, msgBundleSeries, nil
} else {
return requestedSeries, msgUserRequestedSeries, nil
}
}
// User has requested a series and it's an old charm for a single series.
if seriesFromCharm != "" {
if !force && requestedSeries != "" && requestedSeries != seriesFromCharm {
return "", "", charm.NewUnsupportedSeriesError(requestedSeries, []string{seriesFromCharm})
}
if requestedSeries != "" {
if fromBundle {
return requestedSeries, msgBundleSeries, nil
} else {
return requestedSeries, msgUserRequestedSeries, nil
}
}
return seriesFromCharm, msgSingleCharmSeries, nil
}
// Use charm default.
if len(supportedSeries) > 0 {
return supportedSeries[0], msgDefaultCharmSeries, nil
}
// Use model default supported series.
if defaultSeries, ok := conf.DefaultSeries(); ok {
if !force && !isSeriesSupported(defaultSeries, supportedSeries) {
return "", "", charm.NewUnsupportedSeriesError(defaultSeries, supportedSeries)
}
return defaultSeries, msgDefaultModelSeries, nil
}
// Use latest LTS.
latestLtsSeries := config.LatestLtsSeries()
if !force && !isSeriesSupported(latestLtsSeries, supportedSeries) {
return "", "", charm.NewUnsupportedSeriesError(latestLtsSeries, supportedSeries)
}
return latestLtsSeries, msgLatestLTSSeries, nil
}
// SeriesToUpload returns the supplied series with duplicates removed if
// non-empty; otherwise it returns a default list of series we should
// probably upload, based on cfg.
func SeriesToUpload(cfg *config.Config, series []string) []string {
unique := set.NewStrings(series...)
if unique.IsEmpty() {
unique.Add(version.Current.Series)
for _, toolsSeries := range ToolsLtsSeries {
unique.Add(toolsSeries)
}
if series, ok := cfg.DefaultSeries(); ok {
unique.Add(series)
}
}
return unique.SortedValues()
}
func resolveCharm(
resolveWithChannel func(*charm.URL) (*charm.URL, csparams.Channel, []string, error),
conf *config.Config,
url *charm.URL,
) (*charm.URL, csparams.Channel, []string, error) {
if url.Schema != "cs" {
return nil, csparams.NoChannel, nil, errors.Errorf("unknown schema for charm URL %q", url)
}
// If the user hasn't explicitly asked for a particular series,
// query for the charm that matches the model's default series.
// If this fails, we'll fall back to asking for whatever charm is available.
defaultedSeries := false
if url.Series == "" {
if s, ok := conf.DefaultSeries(); ok {
defaultedSeries = true
// TODO(katco): Don't update the value passed in. Not only
// is there no indication that this method will do so, we
// return a charm.URL which signals to the developer that
// we don't modify the original.
url.Series = s
}
}
resultURL, channel, supportedSeries, err := resolveWithChannel(url)
if defaultedSeries && errors.Cause(err) == csparams.ErrNotFound {
// we tried to use the model's default the series, but the store said it doesn't exist.
// retry without the defaulted series, to take what we can get.
url.Series = ""
resultURL, channel, supportedSeries, err = resolveWithChannel(url)
}
if err != nil {
return nil, csparams.NoChannel, nil, errors.Trace(err)
}
if resultURL.Series != "" && len(supportedSeries) == 0 {
supportedSeries = []string{resultURL.Series}
}
return resultURL, channel, supportedSeries, nil
}
// resolveCharmURL returns a resolved charm URL, given a charm location string.
// If the series is not resolved, the environment default-series is used, or if
// not set, the series is resolved with the state server.
func resolveCharmURL(url string, client *api.Client, conf *config.Config) (*charm.URL, error) {
ref, series, err := charm.ParseReference(url)
if err != nil {
return nil, err
}
// If series is not set, use configured default series
if series == "" {
if defaultSeries, ok := conf.DefaultSeries(); ok {
series = defaultSeries
}
}
// Otherwise, look up the best supported series for this charm
if series == "" {
if ref.Schema == "local" {
possibleUrl := &charm.URL{Reference: ref, Series: "precise"}
logger.Errorf(`The series is not specified in the environment (default-series) or with the charm. Did you mean:
%s`, possibleUrl.String())
return nil, fmt.Errorf("cannot resolve series for charm: %q", ref)
}
return client.ResolveCharm(ref)
}
return &charm.URL{Reference: ref, Series: series}, nil
}
// resolveCharmURL returns a resolved charm URL, given a charm location string.
// If the series is not resolved, the environment default-series is used, or if
// not set, the series is resolved with the state server.
func resolveCharmURL(url string, client *api.Client, conf *config.Config) (*charm.URL, error) {
ref, err := charm.ParseReference(url)
if err != nil {
return nil, err
}
// If series is not set, use configured default series
if ref.Series == "" {
if defaultSeries, ok := conf.DefaultSeries(); ok {
ref.Series = defaultSeries
}
}
if ref.Series != "" {
return ref.URL("")
}
// Otherwise, look up the best supported series for this charm
if ref.Schema != "local" {
return client.ResolveCharm(ref)
}
possibleURL := *ref
possibleURL.Series = "precise"
logger.Errorf("The series is not specified in the environment (default-series) or with the charm. Did you mean:\n\t%s", &possibleURL)
return nil, fmt.Errorf("cannot resolve series for charm: %q", ref)
}
// resolveCharmURL resolves the given charm URL string
// by looking it up in the appropriate charm repository.
// If it is a charm store charm URL, the given csParams will
// be used to access the charm store repository.
// If it is a local charm URL, the local charm repository at
// the given repoPath will be used. The given configuration
// will be used to add any necessary attributes to the repo
// and to resolve the default series if possible.
//
// resolveCharmURL also returns the charm repository holding
// the charm.
func resolveCharmURL(curlStr string, csParams charmrepo.NewCharmStoreParams, repoPath string, conf *config.Config) (*charm.URL, charmrepo.Interface, error) {
ref, err := charm.ParseReference(curlStr)
if err != nil {
return nil, nil, errors.Trace(err)
}
repo, err := charmrepo.InferRepository(ref, csParams, repoPath)
if err != nil {
return nil, nil, errors.Trace(err)
}
repo = config.SpecializeCharmRepo(repo, conf)
if ref.Series == "" {
if defaultSeries, ok := conf.DefaultSeries(); ok {
ref.Series = defaultSeries
}
}
if ref.Schema == "local" && ref.Series == "" {
possibleURL := *ref
possibleURL.Series = "trusty"
logger.Errorf("The series is not specified in the environment (default-series) or with the charm. Did you mean:\n\t%s", &possibleURL)
return nil, nil, errors.Errorf("cannot resolve series for charm: %q", ref)
}
if ref.Series != "" && ref.Revision != -1 {
// The URL is already fully resolved; do not
// bother with an unnecessary round-trip to the
// charm store.
curl, err := ref.URL("")
if err != nil {
panic(err)
}
return curl, repo, nil
}
curl, err := repo.Resolve(ref)
if err != nil {
return nil, nil, errors.Trace(err)
}
return curl, repo, nil
}
