private CacheData GetCache(string dataId, string group, string tenant)
{
if (string.IsNullOrEmpty(dataId))
{
throw new ArgumentNullException(nameof(dataId));
}
if (string.IsNullOrEmpty(group))
{
throw new ArgumentNullException(nameof(group));
}
CacheData result = null;
if (_cacheMap.TryGetValue(GroupKey.GetKeyTenant(dataId, group, tenant), out result))
{
return(result);
}
return(result);
}
/// <summary>
/// 校验本地缓存配置
/// </summary>
private void CheckLocalConfig(CacheData cacheData)
{
string dataId = cacheData.DataId;
string group = cacheData.Group;
string tenant = cacheData.Tenant;
string path = _localConfigInfoProcessor.GetFailoverPath(_agent.GetName(), dataId, group, tenant);
if (!cacheData.IsUseLocalConfig && File.Exists(path))
{
string content = _localConfigInfoProcessor.GetFailover(_agent.GetName(), dataId, group, tenant);
string md5 = CacheData.GetMD5String(content);
cacheData.IsUseLocalConfig = true;
cacheData.LocalConfigLastModified = File.GetLastWriteTime(path).GetTimeStamp();
cacheData.Content = content;
_logger.Warn($"[{_agent.GetName()}] [failover-change] failover file created. dataId={dataId}, group={group}, tenant={tenant}, md5={md5}, content={ContentUtils.TruncateContent(content)}");
return;
}
if (cacheData.IsUseLocalConfig && !File.Exists(path))
{
cacheData.IsUseLocalConfig = false;
_logger.Warn($"[{_agent.GetName()}] [failover-change] failover file deleted, dataId={dataId}, group={group}, tenant={tenant}");
return;
}
if (cacheData.IsUseLocalConfig && File.Exists(path) && cacheData.LocalConfigLastModified != File.GetLastWriteTime(path).GetTimeStamp())
{
string content = _localConfigInfoProcessor.GetFailover(_agent.GetName(), dataId, group, tenant);
string md5 = CacheData.GetMD5String(content);
cacheData.IsUseLocalConfig = true;
cacheData.LocalConfigLastModified = File.GetLastWriteTime(path).GetTimeStamp();
cacheData.Content = content;
_logger.Warn($"[{_agent.GetName()}] [failover-change] failover file changed. dataId={dataId}, group={group}, tenant={tenant}, md5={md5}, content={ContentUtils.TruncateContent(content)}");
}
}
private Timer LongPolling(int taskId)
{
return(new Timer(async x =>
{
var cacheDatas = new List <CacheData>();
var inInitializingCacheList = new List <string>();
int selfTaskId = -1;
int.TryParse(x.ToString(), out selfTaskId);
try
{
foreach (var cacheData in _cacheMap.Values)
{
if (cacheData.TaskId == selfTaskId)
{
cacheDatas.Add(cacheData);
try
{
CheckLocalConfig(cacheData);
if (cacheData.IsUseLocalConfig)
{
cacheData.CheckListenerMD5();
}
}
catch (Exception ex)
{
_logger.Error(ex, "get local config info error");
}
}
}
var changedGroupKeys = await CheckUpdateDataIds(cacheDatas, inInitializingCacheList);
foreach (string groupKey in changedGroupKeys)
{
string[] key = GroupKey.ParseKey(groupKey);
string dataId = key[0];
string group = key[1];
string tenant = null;
if (key.Length == 3)
{
tenant = key[2];
}
try
{
string content = await GetServerConfig(dataId, group, tenant);
CacheData cache = null;
if (_cacheMap.TryGetValue(GroupKey.GetKeyTenant(dataId, group, tenant), out cache))
{
cache.Content = content;
_logger.Info($"[{_agent.GetName()}] [data-received] dataId={dataId}, group={group}, tenant={tenant}, md5={cache.MD5}, content={ContentUtils.TruncateContent(content)}");
}
}
catch (Exception ex)
{
_logger.Error(ex, $"[{_agent.GetName()}] [get-update] get changed config exception. dataId={dataId}, group={group}, tenant={tenant}");
}
}
foreach (var cacheData in cacheDatas)
{
if (!cacheData.IsInitializing || inInitializingCacheList.Contains(GroupKey.GetKeyTenant(cacheData.DataId, cacheData.Group, cacheData.Tenant)))
{
cacheData.CheckListenerMD5();
cacheData.IsInitializing = false;
}
}
inInitializingCacheList.Clear();
Timer t = null;
if (_longPollingMap.TryGetValue(selfTaskId, out t))
{
t.Change(1, Timeout.Infinite);
}
}
catch (Exception ex)
{
_logger.Error(ex, "longPolling error");
Timer t = null;
if (_longPollingMap.TryGetValue(selfTaskId, out t))
{
t.Change(_taskPenaltyTime, Timeout.Infinite);
}
}
}, taskId, 0, Timeout.Infinite));
}
