public void WithServers_throws_argument_exception_for_invalid_args()
{
var config = new ClusterOptions();
Assert.Throws <ArgumentException>(() => config.Servers());
Assert.Throws <ArgumentException>(() => config.Servers((string[])null));
Assert.Throws <ArgumentException>(() => config.Servers((Uri[])null));
Assert.Throws <ArgumentException>(() => config.Servers(new string[0]));
}
public async Task InitializeAsync()
{
// DNS-SRV
if (ClusterOptions.IsValidDnsSrv())
{
try
{
var dnsResolver = ServiceProvider.GetRequiredService <IDnsResolver>();
var bootstrapUri = ClusterOptions.ConnectionStringValue.GetDnsBootStrapUri();
var servers = (await dnsResolver.GetDnsSrvEntriesAsync(bootstrapUri)).ToList();
if (servers.Any())
{
_logger.LogInformation($"Successfully retrieved DNS SRV entries: [{string.Join(",", servers)}]");
ClusterOptions.Servers(servers);
}
}
catch (Exception exception)
{
_logger.LogInformation(exception, "Error trying to retrieve DNS SRV entries.");
}
}
foreach (var server in ClusterOptions.ServersValue)
{
var bsEndpoint = server.GetIpEndPoint(ClusterOptions.KvPort, ClusterOptions.EnableIPV6Addressing);
var node = await _clusterNodeFactory.CreateAndConnectAsync(bsEndpoint);
node.BootstrapUri = server;
GlobalConfig = await node.GetClusterMap();
if (GlobalConfig == null) //TODO NCBC-1966 xerror info is being hidden, so on failure this will not be null
{
AddNode(node); //GCCCP is not supported - pre-6.5 server fall back to CCCP like SDK 2
}
else
{
GlobalConfig.IsGlobal = true;
foreach (var nodeAdapter in GlobalConfig.GetNodes()) //Initialize cluster nodes for global services
{
if (server.Host.Equals(nodeAdapter.Hostname)) //this is the bootstrap node so update
{
node.BootstrapUri = server;
node.NodesAdapter = nodeAdapter;
node.BuildServiceUris();
SupportsCollections = node.Supports(ServerFeatures.Collections);
AddNode(node);
}
else
{
var endpoint = nodeAdapter.GetIpEndPoint(ClusterOptions.EnableTls);
if (endpoint.Port == 0)
{
endpoint.Port = 11210;
}
var newNode = await _clusterNodeFactory.CreateAndConnectAsync(endpoint);
newNode.BootstrapUri = server;
newNode.NodesAdapter = nodeAdapter;
newNode.BuildServiceUris();
SupportsCollections = node.Supports(ServerFeatures.Collections);
AddNode(newNode);
}
}
}
}
}