func fromSpec(spec *Spec, next http.Handler) (*cbreaker.CircuitBreaker, error) {
b, err := toBytes(spec.Fallback)
if err != nil {
return nil, err
}
fallback, err := actionFromJSON(b)
if err != nil {
return nil, err
}
var onTripped, onStandby cbreaker.SideEffect
if spec.OnTripped != nil {
b, err := toBytes(spec.OnTripped)
if err != nil {
return nil, err
}
if len(b) != 0 {
v, err := sideEffectFromJSON(b)
if err != nil {
return nil, err
}
onTripped = v
}
}
if spec.OnStandby != nil {
b, err := toBytes(spec.OnStandby)
if err != nil {
return nil, err
}
if len(b) != 0 {
v, err := sideEffectFromJSON(b)
if err != nil {
return nil, err
}
onStandby = v
}
}
return cbreaker.New(next, spec.Condition,
cbreaker.Fallback(fallback),
cbreaker.FallbackDuration(spec.FallbackDuration),
cbreaker.RecoveryDuration(spec.RecoveryDuration),
cbreaker.OnTripped(onTripped),
cbreaker.OnStandby(onStandby),
cbreaker.CheckPeriod(spec.CheckPeriod))
}
func NewCircuitBreaker(next http.Handler, expression string, options ...cbreaker.CircuitBreakerOption) *CircuitBreaker {
circuitBreaker, _ := cbreaker.New(next, expression, options...)
return &CircuitBreaker{circuitBreaker}
}
func NewCircuitBreaker(next http.Handler, options ...cbreaker.CircuitBreakerOption) *CircuitBreaker {
circuitBreaker, _ := cbreaker.New(next, "NetworkErrorRatio() > 0.5", options...)
return &CircuitBreaker{circuitBreaker}
}