public static async Task <bool> Set(ReleaseParams releaseParams, ResponseCachedItem cachedItem)
{
if (Container == null)
{
return(false);
}
var result = true;
foreach (var item in releaseParams.CachedProviders)
{
try
{
var provider = GetProvider(item);
if (provider == null)
{
throw new Exception(string.Format("未找到缓存提供者:{0}.", item));
}
if (!await provider.Set(releaseParams, cachedItem))
{
result = false;
}
}
catch (Exception ex)
{
// todo: log
}
}
return(result);
}
/// <summary>
/// 写入静态文件
/// </summary>
/// <param name="cachedItem"></param>
/// <param name="releaseParams"></param>
/// <returns></returns>
private async Task <bool> Input(ResponseCachedItem cachedItem, ReleaseParams releaseParams)
{
try
{
return(await ResponseCachedMamnager.Set(releaseParams, cachedItem));
}
catch (Exception ex)
{
// todo: 日志
}
return(false);
}
public async Task <bool> Set(ReleaseParams releaseParams, ResponseCachedItem cachedItem)
{
string path = Config.savePath + releaseParams.Key;
if (!path.TryCreateDirectory())
{
return(false);
}
var jsonObj = JsonConvert.SerializeObject(cachedItem);
var buffer = SystemConfig.Instance.TryGetEncoding.GetBytes(jsonObj);
using (var stream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read))
{
await stream.WriteAsync(buffer, 0, buffer.Length);
}
return(File.Exists(path));
}
/// <summary>
/// 从当前请求中解析出ReleaseParams
/// </summary>
/// <param name="path"></param>
/// <param name="releaseItem"></param>
/// <returns>返回模板,物理路径</returns>
private ReleaseParams InnerParse(string path, ReleaseConfigItem releaseItem)
{
if (!releaseItem.IsMatch(path))
{
return(null);
}
var releaseParams = new ReleaseParams()
{
Template = releaseItem.Template,
ClientCached = releaseItem.ClientCached
};
releaseParams.CachedProviders = releaseItem.TryGetProviders;
releaseParams.Uri = path;
releaseParams.Key = path;
releaseParams.Parameters.AddRange(path.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries));
return(releaseParams);
}
public async Task <ResponseCachedItem> Get(ReleaseParams releaseParams)
{
string path = Config.savePath + releaseParams.Key;
if (!File.Exists(path))
{
return(null);
}
byte[] buffer = null;
using (var stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
{
buffer = new byte[stream.Length];
await stream.ReadAsync(buffer, 0, buffer.Length);
}
var jsonObj = SystemConfig.Instance.TryGetEncoding.GetString(buffer);
return(JsonConvert.DeserializeObject <ResponseCachedItem>(jsonObj));
}
public async Task <bool> Set(ReleaseParams releaseParams, ResponseCachedItem cachedItem)
{
try
{
Lock.EnterWriteLock();
if (CachedBuffer.ContainsKey(releaseParams.Key))
{
CachedBuffer.Remove(releaseParams.Key);
}
CachedBuffer.Add(releaseParams.Key, cachedItem);
await Task.CompletedTask;
return(true);
}
finally
{
Lock.ExitWriteLock();
}
}
public async Task <ResponseCachedItem> Get(ReleaseParams releaseParams)
{
try
{
Lock.EnterReadLock();
if (CachedBuffer.ContainsKey(releaseParams.Key))
{
return(CachedBuffer[releaseParams.Key]);
}
}
finally
{
Lock.ExitReadLock();
}
await Task.CompletedTask;
return(null);
}
/// <summary>
/// 输出静态文件至前端
/// </summary>
/// <param name="context"></param>
/// <param name="releaseParams"></param>
/// <returns></returns>
private async Task <bool> Output(HttpContext context, ReleaseParams releaseParams)
{
try
{
var cachedItem = await ResponseCachedMamnager.Get(releaseParams);
if (cachedItem == null)
{
return(false);
}
context.Response.Headers.Clear();
if (releaseParams.ClientCached)
{
var clientTag = context.Request.Headers[HeaderNames.IfNoneMatch];
if (!string.IsNullOrEmpty(clientTag) && clientTag == cachedItem.HashCode)
{
context.Response.StatusCode = 304;
return(true);
}
context.Response.Headers.Add(HeaderNames.ETag, cachedItem.HashCode);
}
context.Response.StatusCode = cachedItem.StatusCode;
foreach (var header in cachedItem.Headers)
{
if (!context.Response.Headers.ContainsKey(header.Key))
{
context.Response.Headers.Add(header.Key, header.Value);
}
}
await context.Response.Body.WriteAsync(cachedItem.Body, 0, cachedItem.Body.Length);
return(true);
}
catch (Exception ex)
{
// todo: 日志
}
return(false);
}
public static async Task <ResponseCachedItem> Get(ReleaseParams releaseParams)
{
if (Container == null)
{
return(null);
}
ResponseCachedItem result = null;
IResponseCachedProvider preProvider = null;
foreach (var item in releaseParams.CachedProviders)
{
try
{
var provider = GetProvider(item);
if (provider == null)
{
throw new Exception(string.Format("未找到缓存提供者:{0}.", item));
}
result = await provider.Get(releaseParams);
if (result != null)
{
if (preProvider != null)
{
await provider.Set(releaseParams, result);
}
break;
}
preProvider = provider;
}
catch (Exception ex)
{
// todo: log
}
}
return(result);
}
