// 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
}
// FinishMachineConfig sets fields on a MachineConfig that can be determined by
// inspecting a plain config.Config and the machine constraints at the last
// moment before bootstrapping. It assumes that the supplied Config comes from
// an environment that has passed through all the validation checks in the
// Bootstrap func, and that has set an agent-version (via FindBootstrapTools,
// or otherwise).
// TODO(fwereade) This function is not meant to be "good" in any serious way:
// it is better that this functionality be collected in one place here than
// that it be spread out across 3 or 4 providers, but this is its only
// redeeming feature.
func FinishMachineConfig(mcfg *cloudinit.MachineConfig, cfg *config.Config, cons constraints.Value) (err error) {
defer utils.ErrorContextf(&err, "cannot complete machine configuration")
// Everything needs the environment's authorized keys.
authKeys := cfg.AuthorizedKeys()
if authKeys == "" {
return fmt.Errorf("environment configuration has no authorized-keys")
}
mcfg.AuthorizedKeys = authKeys
if mcfg.MachineEnvironment == nil {
mcfg.MachineEnvironment = make(map[string]string)
}
mcfg.MachineEnvironment[osenv.JujuProviderType] = cfg.Type()
if !mcfg.StateServer {
return nil
}
// These settings are only appropriate at bootstrap time. At the
// moment, the only state server is the bootstrap node, but this
// will probably change.
if mcfg.APIInfo != nil || mcfg.StateInfo != nil {
return fmt.Errorf("machine configuration already has api/state info")
}
caCert, hasCACert := cfg.CACert()
if !hasCACert {
return fmt.Errorf("environment configuration has no ca-cert")
}
password := cfg.AdminSecret()
if password == "" {
return fmt.Errorf("environment configuration has no admin-secret")
}
passwordHash := utils.PasswordHash(password)
mcfg.APIInfo = &api.Info{Password: passwordHash, CACert: caCert}
mcfg.StateInfo = &state.Info{Password: passwordHash, CACert: caCert}
mcfg.StatePort = cfg.StatePort()
mcfg.APIPort = cfg.APIPort()
mcfg.Constraints = cons
if mcfg.Config, err = BootstrapConfig(cfg); err != nil {
return err
}
// These really are directly relevant to running a state server.
cert, key, err := cfg.GenerateStateServerCertAndKey()
if err != nil {
return fmt.Errorf("cannot generate state server certificate: %v", err)
}
mcfg.StateServerCert = cert
mcfg.StateServerKey = key
return nil
}
// SetEnvironConfig replaces the current configuration of the
// environment with the provided configuration.
func (st *State) SetEnvironConfig(cfg *config.Config) error {
if cfg.AdminSecret() != "" {
return fmt.Errorf("admin-secret should never be written to the state")
}
// TODO(niemeyer): This isn't entirely right as the change is done as a
// delta that the user didn't ask for. Instead, take a (old, new) config
// pair, and apply *known* delta.
settings, err := readSettings(st, "e")
if err != nil {
return err
}
settings.Update(cfg.AllAttrs())
_, err = settings.Write()
return err
}