Lazywriter min data length changes

If data byte array size is less than 10, lazy writer will not accept the data

dalhelper/lazywriter.go

@@ -17,6 +17,8 @@ import (
 // var isDebugMode = false
 var lazyMutex = &sync.Mutex{}
 
+const MIN_DATA_LENGTH = 10
+
 // LazyFDPHelper Helps to Save and Get cache object
 // also saves information into hard disk
 type LazyFDPHelper struct {
@@ -146,18 +148,37 @@ func (lfd *LazyFDPHelper) saveObjectsToFdb() {
 }
 
 // SaveOrUpdateDataInCache this method will Save object in cache if unavailable
-func (lfd *LazyFDPHelper) SaveOrUpdateDataInCache(newObject LazyCacheObject) {
+func (lfd *LazyFDPHelper) SaveOrUpdateDataInCache(newObject LazyCacheObject) bool {
+
+	byteArray, marshalError := ffjson.Marshal(newObject.InterfaceData)
+
+	if marshalError != nil {
+		logginghelper.LogError("error occured while marshaling data ", marshalError)
+		return false
+	}
+
+	// check data length before saving. If less than assumed data length, return false
+
+	lengthOfData := len(byteArray)
+	if lengthOfData < MIN_DATA_LENGTH {
+		logginghelper.LogError("data size is less than minimun expected data length. Actual data length: ", lengthOfData)
+		logginghelper.LogError("data received: ", string(byteArray))
+
+		return false
+	}
 
 	retryCount := 0
 retrylabel:
 	// Get prev object and then save new one
 	//TODO: catch errors
 	dataFromGC, getError := lfd.gc.Get(newObject.FileName)
+
 	if getError != nil || dataFromGC == nil {
 		newObject.ChangeCount = 1
 		lfd.gc.Set(newObject.FileName, newObject)
 
 	} else {
+
 		oldObject, _ := dataFromGC.(LazyCacheObject)
 		if oldObject.IsLocked && retryCount < lfd.MAX_NUMBER_OF_RETRY {
 			retryCount++
@@ -176,20 +197,32 @@ retrylabel:
 	// 	lazyCacheObject.MEMORY_WRITE_COUNT++
 	// 	PerformanceAnalyser[newObject.FileName] = lazyCacheObject
 	// }
+	return true
 }
 
 //saveDataToFDB data to hard disk.
 // This saves data by marshaling using json.Marshal
-func saveDataToFDB(filePath string, objectData interface{}) {
+func saveDataToFDB(filePath string, objectData interface{}) bool {
 	//TODO: catch errors
 	byteArray, marshalError := ffjson.Marshal(objectData)
 	if marshalError != nil {
 		logginghelper.LogError("error occured while marshaling data ", marshalError)
+		return false
 	}
+	// check data length before saving. If less than assumed data length, return false
+	lengthOfData := len(byteArray)
+	if lengthOfData < MIN_DATA_LENGTH {
+		logginghelper.LogError("data size is less than minimun expected data length. Actual data length: ", lengthOfData)
+		logginghelper.LogError("data received: ", string(byteArray))
+		return false
+	}
+
 	saveError := SaveDataToFDB(filePath, byteArray, true)
 	if saveError != nil {
 		logginghelper.LogError("error occured while saving data ", saveError)
+		return false
 	}
+	return true
 }
 
 // use it when req.
@@ -403,3 +436,7 @@ func appendDataToFDB(filePath string, objectData interface{}) {
 		logginghelper.LogError("error occured while saving data ", saveError)
 	}
 }
+
+func Save(filePath string, data interface{}) {
+	saveDataToFDB(filePath, data)
+}