/// <summary>
/// 异步清理业务缓存
/// </summary>
/// <param name="cacheKeys"></param>
/// <param name="callBackHandler"></param>
/// <returns></returns>
public Task ClearCacheAsync(IEnumerable <string> cacheKeys, Action callBackHandler = null)
{
if (cacheKeys.IsEmpty())
{
return(Task.FromResult <object>(null));
}
Task clearTask = null;
string[] orgCacheKeys = cacheKeys.ToArray();
int totalKeys = orgCacheKeys.Length;
if (totalKeys <= 1)
{
//-------单个key模式----
clearTask = Task.Factory.StartNew(() =>
{
CacheConfigFactory.GetCacheManager().Remove(orgCacheKeys[0]);
});
}
else
{
//-------批量模式-------
string[] inner_cacheKeysCopy = new string[orgCacheKeys.Length];
orgCacheKeys.CopyTo(inner_cacheKeysCopy, 0);
clearTask = Task.Factory.StartNew((state) =>
{
string[] keys = (string[])state;
keys.AsParallel().ForAll(key =>
{
CacheConfigFactory.GetCacheManager().Remove(key);
});
if (null != callBackHandler)
{
callBackHandler();
}
}, inner_cacheKeysCopy);
}
return(clearTask);
}
/// <summary>
/// 查询这个关键词在3大平台上的关键词集合，
/// 统计 按照统计进行排序并输出
/// </summary>
/// <param name="keyWord"></param>
/// <returns></returns>
public Task <IEnumerable <string> > QueryThisKeywordMappingsAsync(string keyWord)
{
return(Task.Factory.StartNew(() =>
{
//创建一个 基于阻塞集合 用以保证线程安全
//var allWords = new BlockingCollection<string>();
var lstWords_Tmall = new List <string>();
var lstWords_Taobao = new List <string>();
//------------cache begin-----------------------
string cacheKey = string.Concat("AutoMapping:", keyWord);
var cacheManager = CacheConfigFactory.GetCacheManager();
if (cacheManager.IsHasSet(cacheKey))
{
var cacheWords = cacheManager.Get <IEnumerable <string> >(cacheKey);
if (cacheWords != null)
{
return cacheWords;
//var cursor= cacheWords.GetEnumerator();//直接返回缓存对象数组
//while (cursor.MoveNext())
//{
// yield return cursor.Current;
//}
}
}
//----------如果未能从缓存获取，那么从网络流中检索-------------------
string userAgent = WorkContext.HttpContext.Request.Headers[HttpServerProxy.RequestHeaderKeyUserAgent];
//开辟3个异步任务 并行获取关键词 注意：即使某个平台挂了 不能查询关键词 那么不妨碍其他平台
var tsk_tmall = Task.Factory.StartNew(() =>
{
try
{
var result_words = new TmallAutoMapping(userAgent).QueryWords(keyWord);
lstWords_Tmall.AddRange(result_words);
}
catch (Exception ex)
{
Logger.Error(new Exception(string.Concat("tmall 获取关键词列表失败：失败原因:", ex.ToString())));
}
});
var tsk_taobao = Task.Factory.StartNew(() =>
{
try
{
var result_words = new TaobaoAutoMapping(userAgent).QueryWords(keyWord);
lstWords_Taobao.AddRange(result_words);
}
catch (Exception ex)
{
Logger.Error(new Exception(string.Concat("taobao 获取关键词列表失败：失败原因:", ex.ToString())));
}
});
//放弃京东的建议词
//var tsk_jingdong = Task.Factory.StartNew(() =>
//{
// try
// {
// var result_words = new JingdongAutoMaping(userAgent).QueryWords(keyWord);
// allWords.AddRange(result_words);
// }
// catch (Exception ex)
// {
// Logger.Error(new Exception(string.Concat("jingdong 获取关键词列表失败：失败原因:", ex.ToString())));
// }
//});
//等待并行任务完毕
Task.WaitAll(tsk_tmall, tsk_taobao);//, tsk_jingdong);
//分组 排序 并取前十
//var gps = allWords.GroupBy(x => x).OrderByDescending(x => x.Count()).Take(10);
// var resultList = gps.Select(x => x.Key);
//-------------------注册到缓存中--------------------
//天猫 淘宝 64开
var resultList = lstWords_Tmall.Take(6).ToList();
for (int i = 0; i < lstWords_Taobao.Count; i++)
{
var word = lstWords_Taobao[i];
if (resultList.Contains(word))
{
continue;
}
resultList.Add(word);
if (resultList.Count >= 10)
{
break;
}
}
cacheManager.Set(cacheKey, resultList, 60 * 5);
return resultList;
}));
}