[WIP] circuit_breaker

gomore/06_circuit_breaker/breaker_options.go

@@ -4,13 +4,12 @@ import "time"
 
 //Options for breaker
 type Options struct {
-	Name           string
-	Expiry         time.Time
-	Interval       time.Duration
-	Timeout        time.Duration
-	MaxRequests    uint32
-	ReadyToTrip    StateCheckerHandler
-	OnStateChanged StateChangedEventHandler
+	Name              string
+	Expiry            time.Time
+	Interval, Timeout time.Duration
+	MaxRequests       uint32
+	ReadyToTrip       StateCheckerHandler
+	OnStateChanged    StateChangedEventHandler
 }
 
 //SetName of breaker

gomore/06_circuit_breaker/circuit_breaker.go

@@ -5,7 +5,7 @@ package circuit
  * @Author: Edward
  * @Date: 2020-05-10 22:00:58
  * @Last Modified by: Edward
- * @Last Modified time: 2020-05-10 22:02:18
+ * @Last Modified time: 2020-05-11 11:57:21
  */
 
 import (
@@ -46,8 +46,28 @@ type RequestBreaker struct {
 }
 
 //NewRequestBreaker return a breaker
-func NewRequestBreaker() *RequestBreaker {
+func NewRequestBreaker(opts ...Option) *RequestBreaker {
 
+	defaultOptions := Options{
+		Name:           "defaultBreakerName",
+		Expiry:         time.Now().Add(time.Second * 20),
+		Interval:       time.Second * 2,
+		Timeout:        time.Second * 5,
+		MaxRequests:    5,
+		ReadyToTrip:    func(counts counters) bool { return true },
+		OnStateChanged: func(name string, from State, to State) {},
+	}
+
+	for _, setOption := range opts {
+		setOption(&defaultOptions)
+
+	}
+
+	return &RequestBreaker{
+		options:    defaultOptions,
+		counts:     nil,
+		generation: 0,
+	}
 }
 
 //State of current switch

gomore/06_circuit_breaker/circuit_breaker_test.go

@@ -1,3 +1,11 @@
+/*
+ * @Description: https://github.com/crazybber
+ * @Author: Edward
+ * @Date: 2020-05-11 10:55:28
+ * @Last Modified by: Edward
+ * @Last Modified time: 2020-05-11 10:55:28
+ */
+
 package circuit
 
 import (
@@ -14,6 +22,7 @@ func TestBasicBreaker(t *testing.T) {
 	var st Options
 	st.Name = "HTTP GET"
 	st.ReadyToTrip = func(counts counters) bool {
+		//失败率，可以由用户自己定义
 		failureRatio := float64(counts.TotalFailures) / float64(counts.Requests)
 		return counts.Requests >= 3 && failureRatio >= 0.6
 	}

gomore/09_parallelism/parallelism_test.go

@@ -1,3 +1,11 @@
+/*
+ * @Description: https://github.com/crazybber
+ * @Author: Edward
+ * @Date: 2020-05-11 10:44:52
+ * @Last Modified by: Edward
+ * @Last Modified time: 2020-05-11 10:44:52
+ */
+
 package parallelism
 
 import (