// GetMetadataSources returns the sources to use when looking for
// simplestreams image id metadata for the given stream. If env implements
// SupportsCustomSources, the sources returned from that method will also
// be considered.
func GetMetadataSources(env environs.ConfigGetter) ([]simplestreams.DataSource, error) {
var sources []simplestreams.DataSource
config := env.Config()
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))
}
if custom, ok := env.(SupportsCustomSources); ok {
customSources, err := custom.GetImageSources()
if err != nil {
return nil, err
}
sources = append(sources, customSources...)
}
defaultURL, err := ImageMetadataURL(DefaultBaseURL, config.ImageStream())
if err != nil {
return nil, err
}
if defaultURL != "" {
sources = append(sources,
simplestreams.NewURLDataSource("default cloud images", defaultURL, utils.VerifySSLHostnames))
}
return sources, nil
}
// GetMetadataSourcesWithRetries returns the sources to use when looking for
// simplestreams tools metadata. If env implements SupportsCustomSurces,
// the sources returned from that method will also be considered.
// The sources are configured to use retries according to the value of allowRetry.
func GetMetadataSourcesWithRetries(env environs.ConfigGetter, allowRetry bool) ([]simplestreams.DataSource, error) {
var sources []simplestreams.DataSource
config := env.Config()
if userURL, ok := config.ToolsURL(); ok {
verify := utils.VerifySSLHostnames
if !config.SSLHostnameVerification() {
verify = utils.NoVerifySSLHostnames
}
sources = append(sources, simplestreams.NewURLDataSource("tools-metadata-url", userURL, verify))
}
if custom, ok := env.(SupportsCustomSources); ok {
customSources, err := custom.GetToolsSources()
if err != nil {
return nil, err
}
sources = append(sources, customSources...)
}
defaultURL, err := ToolsURL(DefaultBaseURL)
if err != nil {
return nil, err
}
if defaultURL != "" {
sources = append(sources,
simplestreams.NewURLDataSource("default simplestreams", defaultURL, utils.VerifySSLHostnames))
}
for _, source := range sources {
source.SetAllowRetry(allowRetry)
}
return sources, nil
}
// FindBootstrapTools returns a ToolsList containing only those tools with
// which it would be reasonable to launch an environment's first machine, given the supplied constraints.
// If a specific agent version is not requested, all tools matching the current major.minor version are chosen.
func FindBootstrapTools(cloudInst environs.ConfigGetter, params BootstrapToolsParams) (list coretools.List, err error) {
// Construct a tools filter.
cfg := cloudInst.Config()
cliVersion := version.Current.Number
filter := coretools.Filter{
Series: params.Series,
Arch: stringOrEmpty(params.Arch),
}
if params.Version != nil {
// If we already have an explicit agent version set, we're done.
filter.Number = *params.Version
return bootstrapFindTools(cloudInst, cliVersion.Major, cliVersion.Minor, filter, params.AllowRetry)
}
if dev := cliVersion.IsDev() || cfg.Development(); !dev {
logger.Infof("filtering tools by released version")
filter.Released = true
}
return bootstrapFindTools(cloudInst, cliVersion.Major, cliVersion.Minor, filter, params.AllowRetry)
}