/// <summary>
/// 获取
/// </summary>
/// <returns></returns>
public EtcdClient GetClient()
{
if (ClusterUseType == ClusterUse.Master_Slave)
{
try
{
_client.Put("TestCon", "EtcdCluster");
}
catch
{
_client.Dispose();
_client = null;
var c = GetEtcdClients(1);
if (c != null && c[0] != null)
{
_client.Dispose();
_client = c[0];
}
}
return(_client);
}
else
{
if (readerWriter.TryEnterReadLock(100))
{
try
{
var c = dic.Values.Skip(_Lindex++ / dic.Count).First();
if (c != null)
{
c.lastUse = DateTime.Now.Ticks;
c.UseNum++;
return(c.Client);
}
return(null);
}
finally
{
readerWriter.ExitReadLock();
}
}
return(null);
}
}
public async Task CloseConnections()
{
foreach (var brokerSocket in _brokerSockets)
{
if (brokerSocket != null)
{
await brokerSocket.DeleteConnection();
}
}
_client.Dispose();
}
public void Dispose()
{
Interlocked.Exchange(ref isTaked, 1);
if (watcher != null)
{
watcher.Dispose();
}
if (etcdClient != null)
{
etcdClient.Dispose();
}
GC.SuppressFinalize(true);
}
protected void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
if (disposing)
{
_etcdClient.Dispose();
}
_disposed = true;
}
public static async Task Main(string[] args)
{
var me = Guid.NewGuid().ToString();
Console.WriteLine("Hello World!");
var client = new EtcdClient("http://localhost");
await WatchExample(client);
//await LeaderElectionExample(client, me);
client.Dispose();
}
/// <summary>
/// 下线退出
/// </summary>
/// <returns></returns>
private static async Task ExitCommand()
{
if (m_client != null)
{
string path = $"Client/{m_ClientName}";
await m_client.DeleteAsync(path);
await m_client.PutAsync(path, "OffLine");
await OutputOnlineState();
m_client.Dispose();
m_client = null;
Console.WriteLine($"{m_ClientName}已经关闭");
}
}
public string EtcdSet(string url)
{
try
{
etcdUri = url;
if (etcdClient != null)
{
etcdClient.Dispose();
}
etcdClient = new EtcdClient(new Uri(etcdUri));
return("ok");
}
catch (Exception ex)
{
return("error:" + ex.Message);
}
}
public void Dispose()
{
client.Dispose();
}
static async Task Main(string[] args)
{
//Console.WriteLine("Hello World!");
if (args != null && args.Length > 0)
{
m_ClientName = args[0];
}
Console.WriteLine($"当前运行{m_ClientName}");
m_client = NewClient();
try
{
if (m_client != null)
{
Console.WriteLine($"{m_ClientName}连接成功");
//await CreateClientTree();
//await CreateMessageTree();
await ClientWatcher();
await UpdateOnlineState();
//await GroupMsgWatcher();
//await PrivateMsgWatcher();
}
//CreateClientTree();
//CreateMessageTree();
bool isExit = false;
while (!isExit)
{
var command = Console.ReadLine();
if (command == "exit")
{
isExit = true;
}
else
{
await ExcuteCommand(command);
}
}
await ExitCommand();
if (m_client != null)
{
m_client.Dispose();
}
}
catch (RpcException ex) when(ex.StatusCode == StatusCode.Unavailable)
{
// Do something with the exception.
}
Console.ReadLine();
}
/// <inheritdoc/>
public void Dispose()
{
_etcdClient.Dispose();
}
/// <summary>
/// Initialise etcd client
/// </summary>
/// <param name="options"></param>
private async Task <EtcdClient> CreateClient(EtcdConfigurationRepositoryOptions options)
{
EtcdClient etcdClient = null;
var lookup = new LookupClient();
if (options.UseEtcdClientDiscovery)
{
var dnsHostName = string.IsNullOrEmpty(options.DnsHostOverride)
? $"_etcd-client${(options.UseTLS ? "-ssl" : "")}.${options.EtcdClientDiscoveryDomain}"
: options.DnsHostOverride;
_logger.LogInformation("Attempting service discovery using hostname {dnsHostName}", dnsHostName);
var dnsResponse = await lookup.QueryAsync(dnsHostName, QueryType.SRV);
if (dnsResponse.Answers.Count > 0)
{
foreach (var srvRecord in dnsResponse.Answers.SrvRecords())
{
_logger.LogInformation($"Connecting to etcd host {srvRecord.Target} using port {options.PortOverride ?? srvRecord.Port}.");
var tmpEtcdClient = new EtcdClient(srvRecord.Target, options.PortOverride ?? srvRecord.Port, options.Username, options.Password);
try
{
await tmpEtcdClient.StatusASync(new Etcdserverpb.StatusRequest());
etcdClient = tmpEtcdClient;
break;
}
catch (Exception ex)
{
_logger.LogWarning(ex, "Failed to connect to etcd cluster.");
tmpEtcdClient.Dispose();
}
}
}
if (etcdClient == null)
{
if (!options.UseTLS) //Try again with TLS
{
_logger.LogInformation("Retrying discovery etcd cluster using TLS.");
options.UseTLS = true;
etcdClient = await CreateClient(options);
}
else
{
throw new InvalidOperationException("Unable to connect to a etcd cluster because service discovery operations failed.");
}
}
}
else if (!string.IsNullOrEmpty(options.DnsHostOverride))
{
_logger.LogInformation($"Connecting to etcd host {options.DnsHostOverride} using port {options.PortOverride ?? 2379}.");
etcdClient = new EtcdClient(options.DnsHostOverride, options.PortOverride ?? 2379, options.Username, options.Password);
}
else
{
throw new ArgumentException("Must specify 'DnsHostOverride option' if 'UseEtcdDiscovery' option is set to false.");
}
return(etcdClient);
}
