// waitForAgentInitialisation polls the bootstrapped state server with a read-only
// command which will fail until the state server is fully initialised.
// TODO(wallyworld) - add a bespoke command to maybe the admin facade for this purpose.
func (c *BootstrapCommand) waitForAgentInitialisation(ctx *cmd.Context) (err error) {
attempts := utils.AttemptStrategy{
Min: bootstrapReadyPollCount,
Delay: bootstrapReadyPollDelay,
}
var client block.BlockListAPI
for attempt := attempts.Start(); attempt.Next(); {
client, err = blockAPI(&c.EnvCommandBase)
if err != nil {
return err
}
_, err = client.List()
client.Close()
if err == nil {
ctx.Infof("Bootstrap complete")
return nil
}
if strings.Contains(err.Error(), apiserver.UpgradeInProgressError.Error()) {
ctx.Infof("Waiting for API to become available")
continue
}
return err
}
return err
}
// waitForAgentInitialisation polls the bootstrapped controller with a read-only
// command which will fail until the controller is fully initialised.
// TODO(wallyworld) - add a bespoke command to maybe the admin facade for this purpose.
func (c *bootstrapCommand) waitForAgentInitialisation(ctx *cmd.Context) (err error) {
attempts := utils.AttemptStrategy{
Min: bootstrapReadyPollCount,
Delay: bootstrapReadyPollDelay,
}
var client block.BlockListAPI
for attempt := attempts.Start(); attempt.Next(); {
client, err = blockAPI(&c.ModelCommandBase)
if err != nil {
// Logins are prevented whilst space discovery is ongoing.
errorMessage := err.Error()
if strings.Contains(errorMessage, "space discovery still in progress") {
continue
}
return err
}
_, err = client.List()
client.Close()
if err == nil {
ctx.Infof("Bootstrap complete")
return nil
}
// As the API server is coming up, it goes through a number of steps.
// Initially the upgrade steps run, but the api server allows some
// calls to be processed during the upgrade, but not the list blocks.
// It is also possible that the underlying database causes connections
// to be dropped as it is initialising, or reconfiguring. These can
// lead to EOF or "connection is shut down" error messages. We skip
// these too, hoping that things come back up before the end of the
// retry poll count.
errorMessage := err.Error()
if strings.Contains(errorMessage, apiserver.UpgradeInProgressError.Error()) ||
strings.HasSuffix(errorMessage, "EOF") ||
strings.HasSuffix(errorMessage, "connection is shut down") {
ctx.Infof("Waiting for API to become available")
continue
}
return err
}
return err
}