/// <summary>
/// 获取部分配置信息
/// </summary>
/// <param name="configKey">配置文件KEY名称</param>
/// <returns>如果不存在指定条件的配置文件，则返回null</returns>
/// <exception cref="ArgumentNullException">参数不能为空</exception>
public string GetPartialConfig(string configKey)
{
if (string.IsNullOrEmpty(configKey))
{
throw new ArgumentNullException("configKey");
}
#region Get cache first.
string config = null;
//has cache.
if (_configCaches.TryGetValue(configKey, out config))
{
return(config);
}
#endregion
PrepareConnection();
#region Get remote config.
CSNGetPartialConfigRequestMessage requestMessage = new CSNGetPartialConfigRequestMessage();
requestMessage.Key = configKey;
CSNBusinessMessageTransaction transaction = _transactionManager.Create(IdentityHelper.Create((IPEndPoint)_channel.LocalEndPoint), _channel);
if (transaction == null)
{
throw new Exception("Cannot create a CSN message transaction!");
}
AutoResetEvent autoResetEvent = new AutoResetEvent(false);
transaction.ResponseArrived += delegate(object sender, LightSingleArgEventArgs <BaseMessage> e)
{
CSNGetPartialConfigResponseMessage rspMsg = (CSNGetPartialConfigResponseMessage)e.Target;
if (rspMsg.ErrorId == 0 && !string.IsNullOrEmpty(rspMsg.Config))
{
//add cache.
_configCaches[configKey] = rspMsg.Config;
config = rspMsg.Config;
}
autoResetEvent.Set();
};
transaction.Failed += delegate
{
_transactionManager.Remove(transaction.Identity);
autoResetEvent.Set();
};
transaction.Timeout += delegate
{
_transactionManager.Remove(transaction.Identity);
autoResetEvent.Set();
};
transaction.SendRequest(requestMessage);
//wait 35s.
autoResetEvent.WaitOne(35000);
autoResetEvent.Dispose();
return(config);
#endregion
}
/// <summary>
/// 创建一个新的事务
/// </summary>
/// <param name="role">针对的服务角色</param>
/// <param name="userId">需要定位的用户编号</param>
/// <returns>返回新的事务</returns>
/// <exception cref="ArgumentNullException">参数不能为空</exception>
public BusinessMessageTransaction CreateTransaction(string role, int userId)
{
if (string.IsNullOrEmpty(role))
{
throw new ArgumentNullException("role");
}
string errMsg;
IServerConnectionAgent <BaseMessage> agent = _clsuter.GetChannelBySpecificCondition(role, _protocolStacks[role], userId, out errMsg);
return(agent == null
? new FailMobiSageMessageTransaction(errMsg)
: _transactionManager.Create(IdentityHelper.Create((IPEndPoint)agent.GetChannel().LocalEndPoint), agent.GetChannel()));
}
/// <summary>
/// 创建一个新的事务
/// </summary>
/// <param name="role">针对的服务角色</param>
/// <returns>返回新的事务</returns>
/// <exception cref="ArgumentNullException">参数不能为空</exception>
public MetadataMessageTransaction CreateMetadataTransaction(string role)
{
if (string.IsNullOrEmpty(role))
{
throw new ArgumentNullException("role");
}
string errMsg;
IServerConnectionAgent <MetadataContainer> agent = _metadataCluster.GetChannel(role, _metadataProtocolStack, out errMsg);
return(agent == null
? new FailMobiSageMetadataTransaction(errMsg)
: _metadataTransactionManager.Create(IdentityHelper.Create((IPEndPoint)agent.GetChannel().LocalEndPoint), agent.GetChannel()));
}
/// <summary>
/// 创建一个新的消息事务，并将其加入到当前的事务列表中
/// </summary>
/// <param name="sequenceId">本次新事务的唯一编号</param>
/// <param name="channel">消息通信信道</param>
/// <returns>返回一个新的消息事务</returns>
/// <exception cref="ArgumentNullException">通信信道不能为空</exception>
public ThriftMessageTransaction Create(int sequenceId, IMessageTransportChannel <ThriftMessage> channel)
{
if (channel == null)
{
throw new ArgumentNullException("channel");
}
ThriftMessageTransaction transaction = new ThriftMessageTransaction(new Lease(DateTime.MaxValue), channel)
{
TransactionManager = this, SequenceId = sequenceId
};
TransactionIdentity identity = IdentityHelper.Create((IPEndPoint)channel.LocalEndPoint, sequenceId, false);
transaction.Identity = identity;
return(Add(transaction) ? transaction : null);
}
//new message arrived.
void ChannelReceivedMessage(object sender, LightSingleArgEventArgs <System.Collections.Generic.List <ThriftMessage> > e)
{
IMessageTransportChannel <ThriftMessage> msgChannel = (IMessageTransportChannel <ThriftMessage>)sender;
foreach (ThriftMessage message in e.Target)
{
if (message == null)
{
continue;
}
_tracing.Info("L: {0}\r\nR: {1}\r\n{2}", msgChannel.LocalEndPoint, msgChannel.RemoteEndPoint, message.ToString());
//rebuilds corresponding TransactionIdentity for current RSP message.
TransactionIdentity identity = IdentityHelper.Create((IPEndPoint)msgChannel.LocalEndPoint, (int)message.Identity.SequenceId, false);
_transactionManager.Active(identity, message);
}
}
/// <summary>
/// 创建一个新的事务
/// <para>* 按照固定手机号的负载策略</para>
/// </summary>
/// <param name="targetRole">针对的服务角色</param>
/// <param name="protocolSelf">使用的协议栈</param>
/// <param name="mobileNo">手机号</param>
/// <returns>返回新的事务</returns>
/// <exception cref="ArgumentNullException">参数不能为空</exception>
public BusinessMessageTransaction CreateTransaction(string targetRole, string protocolSelf, long mobileNo)
{
if (string.IsNullOrEmpty(targetRole))
{
throw new ArgumentNullException("targetRole");
}
if (string.IsNullOrEmpty(protocolSelf))
{
throw new ArgumentNullException("protocolSelf");
}
string errMsg;
IServerConnectionAgent <BaseMessage> agent = _clsuter.GetChannelBySpecificCondition(targetRole, _protocolStacks[protocolSelf], mobileNo, out errMsg);
return(agent == null
? new FailMobiSageMessageTransaction(errMsg)
: _transactionManager.Create(IdentityHelper.Create((IPEndPoint)agent.GetChannel().LocalEndPoint), agent.GetChannel()));
}
/// <summary>
/// 获取指定表的数据
/// </summary>
/// <param name="database">数据库名</param>
/// <param name="table">表名</param>
/// <param name="hasCache">缓存标识</param>
/// <returns>返回表数据</returns>
/// <exception cref="ArgumentNullException">参数不能为空</exception>
public DataTable GetTable(string database, string table, bool hasCache)
{
DataTable result = null;
Exception exception = null;
if (hasCache)
{
//get cache by default.
if ((result = GetCacheTable(string.Format("{0}.{1}", database, table))) != null)
{
return(result);
}
}
PrepareConnection();
CSNGetDataTableRequestMessage requestMessage = new CSNGetDataTableRequestMessage();
requestMessage.DatabaseName = database;
requestMessage.TableName = table;
CSNBusinessMessageTransaction transaction = _transactionManager.Create(IdentityHelper.Create((IPEndPoint)_channel.LocalEndPoint), _channel);
if (transaction == null)
{
throw new Exception("Cannot create a CSN message transaction!");
}
AutoResetEvent autoResetEvent = new AutoResetEvent(false);
transaction.ResponseArrived += delegate(object sender, LightSingleArgEventArgs <BaseMessage> e)
{
CSNGetDataTableResponseMessage responseMessage = (CSNGetDataTableResponseMessage)e.Target;
result = responseMessage.Tables == null ? null : responseMessage.Tables;
autoResetEvent.Set();
};
transaction.Failed += delegate
{
_transactionManager.Remove(transaction.Identity);
exception = new Exception("Failed! Cannot get table data config from CSN service, #table: " + table);
autoResetEvent.Set();
};
transaction.Timeout += delegate
{
_transactionManager.Remove(transaction.Identity);
exception = new Exception("Timeout! Cannot get table data config from CSN service, #table: " + table);
autoResetEvent.Set();
};
transaction.SendRequest(requestMessage);
//wait 35s.
autoResetEvent.WaitOne(35000);
autoResetEvent.Dispose();
if (exception != null)
{
throw exception;
}
#region Add table cahce.
if (hasCache && result != null)
{
lock (_lockTablesObj)
_cacheTables.Add(string.Format("{0}.{1}", database, table), result);
}
#endregion
return(result);
}
/// <summary>
/// 获取某个字段的值
/// </summary>
/// <typeparam name="T">字段类型</typeparam>
/// <param name="database">数据库名</param>
/// <param name="table">表名</param>
/// <param name="service">服务名称</param>
/// <param name="field">字段名</param>
/// <returns>返回相应字段的值</returns>
/// <exception cref="ArgumentNullException">参数不能为空</exception>
public string GetField(string database, string table, string service, string field)
{
string result = null;
#region Get cache first.
Dictionary <string, string> items;
//has cache.
if (_cacheKeys.TryGetValue(service, out items))
{
return(items.TryGetValue(field, out result) ? result : null);
}
#endregion
PrepareConnection();
#region Get remote config.
Exception exception = null;
CSNGetKeyDataRequestMessage requestMessage = new CSNGetKeyDataRequestMessage();
requestMessage.DatabaseName = database;
requestMessage.TableName = table;
requestMessage.ServiceName = service;
CSNBusinessMessageTransaction transaction = _transactionManager.Create(IdentityHelper.Create((IPEndPoint)_channel.LocalEndPoint), _channel);
if (transaction == null)
{
throw new Exception("Cannot create a CSN message transaction!");
}
AutoResetEvent autoResetEvent = new AutoResetEvent(false);
transaction.ResponseArrived += delegate(object sender, LightSingleArgEventArgs <BaseMessage> e)
{
CSNGetKeyDataResponseMessage rspMessage = (CSNGetKeyDataResponseMessage)e.Target;
#region Add Cache.
Dictionary <string, string> values = new Dictionary <string, string>();
if (rspMessage.Items != null)
{
foreach (KeyValueItem item in rspMessage.Items)
{
values.Add(item.Key, item.Value);
}
_cacheKeys.Add(service, values);
}
//get result.
result = values.ContainsKey(field) ? values[field] : null;
#endregion
autoResetEvent.Set();
};
transaction.Failed += delegate
{
_transactionManager.Remove(transaction.Identity);
exception = new Exception("Failed! Cannot get key data config from CSN service, #key: " + field);
autoResetEvent.Set();
};
transaction.Timeout += delegate
{
_transactionManager.Remove(transaction.Identity);
exception = new Exception("Timeout! Cannot get key data config from CSN service, #key: " + field);
autoResetEvent.Set();
};
transaction.SendRequest(requestMessage);
//wait 35s.
autoResetEvent.WaitOne(35000);
autoResetEvent.Dispose();
if (exception != null)
{
throw exception;
}
#endregion
return(result);
}
/// <summary>
/// 创建一个新的网络事务
/// </summary>
/// <param name="appName">目标APP的名称</param>
/// <param name="target">标示网络终点接的协议簇组合</param>
/// <param name="maximumRspTime">等待当前网络事务RSP消息的最大时间</param>
/// <param name="resourceUri">KAE资源URI</param>
/// <param name="balanceFlag">负载标识</param>
/// <param name="communicationType">通信方式</param>
/// <param name="version">
/// 目标APP的版本
/// <para>* 默认为: latest</para>
/// </param>
/// <param name="protocolSelf">
/// 使用的协议栈的角色
/// <para>* 如果当前事务代理器所承载的消息协议为MetadataContainer时请忽略此参数</para>
/// </param>
/// <returns>返回新的事务</returns>
public IMessageTransaction <TMessage> CreateTransaction(string appName, Protocols target, TimeSpan maximumRspTime, long balanceFlag, string version = "latest", KAEResourceUri resourceUri = null, NetworkCommunicationTypes communicationType = NetworkCommunicationTypes.Dulplex, string protocolSelf = null)
{
if (string.IsNullOrEmpty(appName))
{
throw new ArgumentNullException("appName");
}
string errMsg;
ApplicationLevel level = (resourceUri == null ? ApplicationLevel.Stable : _callback(resourceUri));
KAERingNode ringNode;
IServerConnectionAgent <TMessage> agent = _cluster.GetChannel(target, level, _container.GetDefaultProtocolStack(_cluster.ProtocolType), balanceFlag, out errMsg, out ringNode);
if (agent == null)
{
lock (_lockObj)
{
//try to obtains agent object again for ensuring that the newest remoting addresses can be appliy in the multiple threading env.
agent = _cluster.GetChannel(target, level, _container.GetDefaultProtocolStack(_cluster.ProtocolType), balanceFlag, out errMsg, out ringNode);
if (agent == null && !GetMissedRemoteAddresses(appName, version, target, level))
{
return(new FailMessageTransaction <TMessage>(errMsg));
}
agent = _cluster.GetChannel(target, level, _container.GetDefaultProtocolStack(_cluster.ProtocolType), balanceFlag, out errMsg, out ringNode);
//check returned value again for avoiding couldnt connect to the remote address now.
if (agent == null)
{
return(new FailMessageTransaction <TMessage>(errMsg));
}
}
}
MessageTransaction <TMessage> transaction = NewTransaction(new Lease(DateTime.Now.Add(maximumRspTime)), agent.GetChannel());
transaction.SetMessageIdentity(new MessageIdentity {
ProtocolId = (byte)target.ProtocolId, ServiceId = (byte)target.ServiceId, DetailsId = (byte)target.DetailsId
});
transaction.TransactionManager = _transactionManager;
transaction.Identity = (communicationType == NetworkCommunicationTypes.Dulplex ? IdentityHelper.Create(agent.GetChannel().LocalEndPoint, TransportChannelTypes.TCP) : IdentityHelper.CreateOneway(agent.GetChannel().LocalEndPoint, TransportChannelTypes.TCP));
transaction.KPPUniqueId = ringNode.KPPUniqueId;
return(_transactionManager.Add(transaction.Identity, transaction) ? transaction : null);
}
/// <summary>
/// 虚拟的消息事物，仅用于单元测试中使用
/// </summary>
public FakedBusinessTransaction()
{
Identity = IdentityHelper.Create(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 10000));
}
/// <summary>
/// 创建一个新的事务
/// </summary>
/// <returns>返回新创建的事务</returns>
/// <exception cref="ArgumentNullException">参数错误</exception>
public MessageTransaction <BaseMessage> CreateTransaction()
{
return(_transactionManager.Create(IdentityHelper.Create(_channel.LocalEndPoint, _channel.ChannelType), _channel));
}
/// <summary>
/// 创建一个新的事务
/// </summary>
/// <returns>返回新创建的事务</returns>
/// <exception cref="ArgumentNullException">参数错误</exception>
public MessageTransaction <MetadataContainer> CreateTransaction()
{
return(_transactionManager.Create(IdentityHelper.Create(_channel.LocalEndPoint, _channel.ChannelType), _channel));
}