feat(saga):Add saga abort log

- add saga abort log
- fix Readme.

Author: lysu

README.md

@@ -1,6 +1,7 @@
 # go-saga
 
-[![GoDoc](https://godoc.org/github.com/lysu/go-saga?status.svg)](https://godoc.org/github.com/lysu/go-saga)[![Build Status](https://travis-ci.org/lysu/go-saga.svg?branch=master)](https://travis-ci.org/lysu/go-saga)
+[![GoDoc](https://godoc.org/github.com/lysu/go-saga?status.svg)](https://godoc.org/github.com/lysu/go-saga)
+[![Build Status](https://travis-ci.org/lysu/go-saga.svg?branch=master)](https://travis-ci.org/lysu/go-saga)
 
 Implements sagas-pattern in go, make distribute transaction easier.
 

log.go

@@ -13,6 +13,8 @@ const (
 	SagaStart LogType = iota + 1
 	// SagaEnd flag saga ended log
 	SagaEnd
+	// SagaAbort flag saga aborted
+	SagaAbort
 	// ActionStart flag action start log
 	ActionStart
 	// ActionEnd flag action end log

saga.go

@@ -86,6 +86,14 @@ func (s *Saga) Abort() {
 	if err != nil {
 		panic("Abort Panic")
 	}
+	alog := &Log{
+		Type: SagaAbort,
+		Time: time.Now(),
+	}
+	err = s.sec.logStorage.AppendLog(s.logID, alog.mustMarshal())
+	if err != nil {
+		panic("Add log Failure")
+	}
 	for i := len(logs) - 1; i >= 0; i-- {
 		logData := logs[i]
 		log := mustUnmarshalLog(logData)

saga_test.go

@@ -77,7 +77,7 @@ func TestDepositFail(t *testing.T) {
 	logs, err := storage.Lookup("saga_1")
 	assert.NoError(t, err)
 	t.Logf("%v", logs)
-	assert.Equal(t, 9, len(logs))
+	assert.Equal(t, 10, len(logs))
 
 }