static async Task Main(string[] args)
{
using var loggerFactory = LoggerFactory.Create(builder =>
{
builder
.AddFilter("Microsoft", LogLevel.Debug)
.AddFilter("System", LogLevel.Information)
.AddConsole();
});
var logger = loggerFactory.CreateLogger <ZkConnection>();
var zk = new ZkConnection(new ZkConnectionOptions()
{
ConnectionString = "localhost:2181", SessionTimeout = 5000
}, logger);
zk.OnWatch += Zk_OnWatch;
await zk.ConnectAsync();
while (true)
{
await zk.CreateNodeAsync("/mynode", "ab",
new List <Acl>() { new Acl(AclPerm.All, AclScheme.World, AclId.World()) }, NodeType.Ephemeral);
await zk.SetDataAsync("/mynode", "111");
await zk.GetChildrenAsync("/mynode");
await Task.Delay(1000);
await zk.DeleteNodeAsync("/mynode");
}
}
private async Task ConnectToZkAsync()
{
if (_zk == null || !_zk.Connected)
{
if (_zk != null)
{
await _zk.DisposeAsync();
}
_zk = new ZkConnection(
new ZkConnectionOptions()
{
ConnectionString = _options.ZkAddress, SessionTimeout = _options.ZkSessionTimeout
},
_loggerFactory.CreateLogger <ZkConnection>());
_zk.OnWatch += Zk_OnWatch;
await _zk.ConnectAsync();
}
var times = 0;
while (times < 60)
{
if (await _zk.NodeExistsAsync(ZK_SERVER_RUNNING_NODE))
{
return;
}
await Task.Delay(1000);
times++;
_logger.LogWarning($"Can not find node {ZK_SERVER_RUNNING_NODE} on Zookeeper. Retrying... {times}");
}
throw new CanalConnectionException($"Can not find node {ZK_SERVER_RUNNING_NODE} on Zookeeper.");
}