From af819a4241cf4162618d4caafa20a5b6ae609808 Mon Sep 17 00:00:00 2001
From: tongchenfei <tongchenfei@zhidaoauto.com>
Date: Tue, 25 Aug 2020 20:45:33 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E6=8B=A5=E5=A0=B5=E7=AD=96?=
 =?UTF-8?q?=E7=95=A5?=
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---
 .../share/strategyreceiver/BlockStrategy.kt   | 46 +++++++++++++++----
 1 file changed, 37 insertions(+), 9 deletions(-)

diff --git a/modules/mogo-module-share/src/main/java/com/mogo/module/share/strategyreceiver/BlockStrategy.kt b/modules/mogo-module-share/src/main/java/com/mogo/module/share/strategyreceiver/BlockStrategy.kt
index 125ebab3b6..ff0e58de14 100644
--- a/modules/mogo-module-share/src/main/java/com/mogo/module/share/strategyreceiver/BlockStrategy.kt
+++ b/modules/mogo-module-share/src/main/java/com/mogo/module/share/strategyreceiver/BlockStrategy.kt
@@ -5,7 +5,6 @@ import android.util.ArrayMap
 import com.mogo.module.share.constant.HttpConstant
 import com.mogo.module.share.net.ShareApiService
 import com.mogo.service.IMogoServiceApis
-import com.mogo.service.network.IMogoNetwork
 import com.mogo.service.tanlu.IMogoTanluProvider
 import com.mogo.service.tanlu.TanluUploadParams
 import com.mogo.utils.logger.Logger
@@ -15,17 +14,35 @@ import com.mogo.utils.logger.Logger
  * 速度记录间隔，单位是毫秒
  */
 private const val SPEED_RECORD_TIME_INTERVAL = 2 * 60 * 1000L
+
+/**
+ * 停车标志位阈值，单位是次，两秒一次
+ */
+private const val STOP_FLAG_THRESHOLD = 30
 private const val TAG = "BlockUploadStrategy"
+
 /**
  * 用于计算拥堵策略
  */
-class BlockStrategy(private val apis:IMogoServiceApis) {
+class BlockStrategy(private val apis: IMogoServiceApis) {
     private var startRecordTime: Long = 0
     private var speedCacheList = ArrayList<Float>()
 
+    /**
+     * 停车标志位，当速度为0时加1，超过[STOP_FLAG_THRESHOLD]判定为停车，不认为是拥堵，这组数据无效
+     */
+    private var stopFlag = 0
+
     /**
      * 拥堵速度计算上报策略
      * 计算[SPEED_RECORD_TIME_INTERVAL]内的平均速度，并上报
+     *
+     * 定义的此方法是每两秒钟调用一次, 两分钟为一段进行计算  |--两分钟--|--两分钟--|--两分钟--|
+     *
+     * 里面有一个小策略，使用了一个停车标志位，如果速度为0，停车标志位加一，一个两分钟时间段内，
+     * 停车标志为累加超过[STOP_FLAG_THRESHOLD]判定为停车，不是拥堵，舍弃掉整个两分钟数据，不进行上报，
+     * 否则上报服务端，返回是否抓取视频
+     *
      * @param speed 当前速度，单位需要是Km/h
      */
     fun recordSpeed(speed: Float) {
@@ -33,21 +50,32 @@ class BlockStrategy(private val apis:IMogoServiceApis) {
         if (startRecordTime == 0L) {
             // 数据初始化
             startRecordTime = current
+            stopFlag = 0
             speedCacheList.clear()
         }
 
         speedCacheList.add(speed)
 
+        if (speed == 0F) {
+            stopFlag++
+        }else{
+            stopFlag = 0
+        }
+
         if (current - startRecordTime >= SPEED_RECORD_TIME_INTERVAL) {
             // 到达时间限制，上报速度，数据清空
-            var sum = 0F
-            speedCacheList.forEach {
-                sum += it
+            if(stopFlag < STOP_FLAG_THRESHOLD) {
+                // 停车标志位小于阈值，判定不是停车，计算平均值，进行上报
+                var sum = 0F
+                speedCacheList.forEach {
+                    sum += it
+                }
+                val ave = sum / speedCacheList.size
+                Logger.d(TAG, "平均速度为： $ave")
+                // 上报平均速度
+                uploadAverageSpeed(ave)
             }
-            val ave = sum / speedCacheList.size
-            Logger.d(TAG, "平均速度为： $ave")
-            // 上报平均速度
-            uploadAverageSpeed(ave)
+            startRecordTime = 0
         }
     }