func (s *DefaultSubscriber) configLoop() {
// Wait 5 mins for config to load. If we cannot load config by the
// then there's most likely a major issue and we should panic.
if !config.WaitUntilLoaded(5 * time.Minute) {
panic("Waiting 5 mins for config to load")
}
s.loadFromConfig()
ch := config.SubscribeChanges()
for {
select {
case <-ch:
s.loadFromConfig()
case <-s.stop:
break
}
}
}
// loadFromConfig including contiuous retries until we have managed to load it
func (v *validatorImpl) loadFromConfig() {
if !config.WaitUntilLoaded(waitForConfigDelay) {
// put out a warning anyway, to make it clear we are going to struggle to load key
log.Warnf("[Auth] Failed to load config after %v, kicking off public key loading anyway...", waitForConfigDelay)
}
// block until we load
attempts := 0
for {
if err := v.load(); err != nil {
attempts++
delay := time.Duration(int64(startRetryDelay) * int64(attempts))
if delay > maxRetryDelay {
delay = maxRetryDelay
}
log.Tracef("[Auth] Failed to load public key from config: %v (sleeping for %v)", err, delay)
time.Sleep(delay)
continue
}
break
}
}
// setup is a one-time action that loads PUB hosts from config and sets up a config subscriber
func (p *HostpoolPublisher) setup() {
// Wait 5 mins for config to load. If we cannot load config by the
// then there's most likely a major issue and we should panic.
if !config.WaitUntilLoaded(5 * time.Minute) {
panic("Waiting 5 mins for config to load")
}
ch := config.SubscribeChanges()
p.loadFromConfig()
go func() {
for {
<-ch
for {
if err := p.loadFromConfig(); err != nil {
log.Warnf("Failed to load NSQ PUB config: %v", err)
time.Sleep(configRetryDelay)
} else {
break
}
}
}
}()
}