// initVersions collects state relevant to an upgrade decision. The returned
// agent and client versions, and the list of currently available tools, will
// always be accurate; the chosen version, and the flag indicating development
// mode, may remain blank until uploadTools or validate is called.
func (c *UpgradeJujuCommand) initVersions(cfg *config.Config, env environs.Environ) (*upgradeVersions, error) {
agent, ok := cfg.AgentVersion()
if !ok {
// Can't happen. In theory.
return nil, fmt.Errorf("incomplete environment configuration")
}
if c.Version == agent {
return nil, errUpToDate
}
client := version.Current.Number
available, err := environs.FindAvailableTools(env, client.Major)
if err != nil {
if !errors.IsNotFoundError(err) {
return nil, err
}
if !c.UploadTools {
if c.Version == version.Zero {
return nil, errUpToDate
}
return nil, err
}
}
dev := c.Development || cfg.Development() || agent.IsDev() || client.IsDev()
return &upgradeVersions{
dev: dev,
agent: agent,
client: client,
chosen: c.Version,
tools: available,
}, nil
}
// BootstrapConfig returns a copy of the supplied configuration with
// secret attributes removed. If the resulting config is not suitable
// for bootstrapping an environment, an error is returned.
func BootstrapConfig(cfg *config.Config) (*config.Config, error) {
p, err := Provider(cfg.Type())
if err != nil {
return nil, err
}
secrets, err := p.SecretAttrs(cfg)
if err != nil {
return nil, err
}
m := cfg.AllAttrs()
for k := range secrets {
delete(m, k)
}
// We never want to push admin-secret or the root CA private key to the cloud.
delete(m, "admin-secret")
m["ca-private-key"] = ""
if cfg, err = config.New(m); err != nil {
return nil, err
}
if _, ok := cfg.AgentVersion(); !ok {
return nil, fmt.Errorf("environment configuration has no agent-version")
}
return cfg, nil
}
// checkEnvironConfig returns an error if the config is definitely invalid.
func checkEnvironConfig(cfg *config.Config) error {
if cfg.AdminSecret() != "" {
return fmt.Errorf("admin-secret should never be written to the state")
}
if _, ok := cfg.AgentVersion(); !ok {
return fmt.Errorf("agent-version must always be set in state")
}
return nil
}
// Open implements environs.EnvironProvider.Open.
func (environProvider) Open(cfg *config.Config) (env environs.Environ, err error) {
logger.Infof("opening environment %q", cfg.Name())
if _, ok := cfg.AgentVersion(); !ok {
cfg, err = cfg.Apply(map[string]interface{}{
"agent-version": version.CurrentNumber().String(),
})
if err != nil {
return nil, err
}
}
environ := &localEnviron{name: cfg.Name()}
err = environ.SetConfig(cfg)
if err != nil {
logger.Errorf("failure setting config: %v", err)
return nil, err
}
return environ, nil
}