/// <summary>
/// 创建 <see cref="RequestCounter"/> 实例
/// </summary>
/// <param name="tagInfo">Tag信息</param>
/// <param name="urlItem">所属Url项</param>
public RequestCounter(RequestTagInfo tagInfo, UrlItem urlItem)
{
if (tagInfo == null) throw new ArgumentNullException("tagInfo");
if (urlItem == null) throw new ArgumentNullException("urlItem");
this.tagInfo = tagInfo;
this.urlItem = urlItem;
}
/// <summary>
/// 获取相应计数器
/// </summary>
/// <param name="traceInfo">跟踪信息</param>
/// <returns></returns>
public RequestCounter GetCounter(UrlTraceInfo traceInfo)
{
if (traceInfo == null)
throw new ArgumentNullException("traceInfo");
Range requestCostRange = Range.Empty;
Range responseSizeRange = Range.Empty;
if (traceInfo.TraceItems.RequestCost)
requestCostRange = RequestTagProvider.RequestCostRanges.First(r => traceInfo.RequestCost >= r.Lower && traceInfo.RequestCost < r.Upper);
if (traceInfo.TraceItems.ResponseSize)
responseSizeRange = RequestTagProvider.ResponseSizeRanges.First(r => traceInfo.ResponseSize >= r.Lower && traceInfo.ResponseSize < r.Upper);
string key = string.Concat(requestCostRange.Id, "|", responseSizeRange.Id);
RequestCounter counter;
countersLock.EnterReadLock();
counters.TryGetValue(key, out counter);
countersLock.ExitReadLock();
if (counter == null)
{
countersLock.EnterWriteLock();
counters.TryGetValue(key, out counter);
if (counter == null)
{
try
{
RequestTagInfo tagInfo = new RequestTagInfo();
tagInfo.RequestCostRange = requestCostRange;
tagInfo.ResponseSizeRange = responseSizeRange;
tagInfo.FullTags = new Dictionary<string, string>();
tagInfo.FullTags.Add("HostAddress", hostAddress);
tagInfo.FullTags.Add("FilePath", filePath);
if (tagInfo.RequestCostRange.Id != 0) tagInfo.FullTags.Add("Latency", tagInfo.RequestCostRange.Name);
if (tagInfo.ResponseSizeRange.Id != 0) tagInfo.FullTags.Add("ResponseSize", tagInfo.ResponseSizeRange.Name);
counter = new RequestCounter(tagInfo, this);
counters.Add(key, counter);
}
catch
{ }
finally
{
countersLock.ExitWriteLock();
}
}
else
{
countersLock.ExitWriteLock();
}
}
return counter;
}
