// also looks up the discovery client. We can't do this during init because the flags won't have been set
// because this is constructed pre-command execution before the command tree is even set up
func (c *ClientCache) getDefaultConfig() (restclient.Config, discovery.DiscoveryInterface, error) {
c.defaultConfigLock.Lock()
defer c.defaultConfigLock.Unlock()
if c.defaultConfig != nil && c.discoveryClient != nil {
return *c.defaultConfig, c.discoveryClient, nil
}
config, err := c.loader.ClientConfig()
if err != nil {
return restclient.Config{}, nil, err
}
discoveryClient, err := c.discoveryClientFactory.DiscoveryClient()
if err != nil {
return restclient.Config{}, nil, err
}
if c.matchVersion {
if err := discovery.MatchesServerVersion(discoveryClient); err != nil {
return restclient.Config{}, nil, err
}
}
c.defaultConfig = config
c.discoveryClient = discoveryClient
return *c.defaultConfig, c.discoveryClient, nil
}
// ClientConfigForVersion returns the correct config for a server
func (c *ClientCache) ClientConfigForVersion(version *unversioned.GroupVersion) (*restclient.Config, error) {
if c.defaultConfig == nil {
config, err := c.loader.ClientConfig()
if err != nil {
return nil, err
}
c.defaultConfig = config
if c.matchVersion {
if err := discovery.MatchesServerVersion(c.discoveryClient, config); err != nil {
return nil, err
}
}
}
if version != nil {
if config, ok := c.configs[*version]; ok {
return config, nil
}
}
// TODO: have a better config copy method
config := *c.defaultConfig
// TODO these fall out when we finish the refactor
var preferredGV *unversioned.GroupVersion
if version != nil {
versionCopy := *version
preferredGV = &versionCopy
}
oldclient.SetKubernetesDefaults(&config)
negotiatedVersion, err := discovery.NegotiateVersion(c.discoveryClient, &config, preferredGV, registered.EnabledVersions())
if err != nil {
return nil, err
}
config.GroupVersion = negotiatedVersion
if version != nil {
c.configs[*version] = &config
}
// `version` does not necessarily equal `config.Version`. However, we know that we call this method again with
// `config.Version`, we should get the config we've just built.
configCopy := config
c.configs[*config.GroupVersion] = &configCopy
return &config, nil
}