func (c *CircuitBreaker) checkCondition(r request.Request) bool {
if !c.timeToCheck() {
return false
}
c.m.Lock()
defer c.m.Unlock()
// Other goroutine could have updated the lastCheck variable before we grabbed mutex
if !c.tm.UtcNow().After(c.lastCheck) {
return false
}
c.lastCheck = c.tm.UtcNow().Add(c.checkPeriod)
// Each requests holds a context attached to it, we use it to attach the metrics to the request
// so condition checker function can use it for analysis on the next line.
r.SetUserData(cbreakerMetrics, c.metrics)
return c.condition(r)
}
func (c *CircuitBreaker) markToRecordMetrics(r request.Request) {
r.SetUserData(cbreakerRecordMetrics, true)
}
