// ImageMetadataSources returns the sources to use when looking for
// simplestreams image id metadata for the given stream.
func ImageMetadataSources(env Environ) ([]simplestreams.DataSource, error) {
config := env.Config()
// Add configured and environment-specific datasources.
var sources []simplestreams.DataSource
if userURL, ok := config.ImageMetadataURL(); ok {
verify := utils.VerifySSLHostnames
if !config.SSLHostnameVerification() {
verify = utils.NoVerifySSLHostnames
}
sources = append(sources, simplestreams.NewURLDataSource("image-metadata-url", userURL, verify, simplestreams.SPECIFIC_CLOUD_DATA, false))
}
envDataSources, err := environmentDataSources(env)
if err != nil {
return nil, err
}
sources = append(sources, envDataSources...)
// Add the official image metadata datasources.
officialDataSources, err := imagemetadata.OfficialDataSources(config.ImageStream())
if err != nil {
return nil, err
}
for _, source := range officialDataSources {
sources = append(sources, source)
}
for _, ds := range sources {
logger.Debugf("using image datasource %q", ds.Description())
}
return sources, nil
}
func (s *simplestreamsSuite) TestOfficialSources(c *gc.C) {
origKey := imagemetadata.SetSigningPublicKey(sstesting.SignedMetadataPublicKey)
defer func() {
imagemetadata.SetSigningPublicKey(origKey)
}()
ds, err := imagemetadata.OfficialDataSources("daily")
c.Assert(err, jc.ErrorIsNil)
c.Assert(ds, gc.HasLen, 2)
url, err := ds[0].URL("")
c.Assert(err, jc.ErrorIsNil)
c.Assert(url, gc.Equals, "https://streams.canonical.com/juju/images/daily/")
c.Assert(ds[0].PublicSigningKey(), gc.Equals, sstesting.SignedMetadataPublicKey)
url, err = ds[1].URL("")
c.Assert(err, jc.ErrorIsNil)
c.Assert(url, gc.Equals, "http://cloud-images.ubuntu.com/daily/")
c.Assert(ds[1].PublicSigningKey(), gc.Equals, sstesting.SignedMetadataPublicKey)
}