protected async Task WaitForReadyAsync(EndPoint expectedMaster = null, bool waitForReplication = false, TimeSpan?duration = null)
{
duration ??= TimeSpan.FromSeconds(30);
var sw = Stopwatch.StartNew();
// wait until we have 1 master and 1 replica and have verified their roles
var master = SentinelServerA.SentinelGetMasterAddressByName(ServiceName);
if (expectedMaster != null && expectedMaster.ToString() != master.ToString())
{
while (sw.Elapsed < duration.Value)
{
await Task.Delay(1000).ForAwait();
try
{
master = SentinelServerA.SentinelGetMasterAddressByName(ServiceName);
if (expectedMaster.ToString() == master.ToString())
{
break;
}
}
catch (Exception)
{
// ignore
}
}
}
if (expectedMaster != null && expectedMaster.ToString() != master.ToString())
{
throw new RedisException($"Master was expected to be {expectedMaster}");
}
Log($"Master is {master}");
using var checkConn = Conn.GetSentinelMasterConnection(ServiceOptions);
await WaitForRoleAsync(checkConn.GetServer(master), "master", duration.Value.Subtract(sw.Elapsed)).ForAwait();
var replicas = SentinelServerA.SentinelGetReplicaAddresses(ServiceName);
if (replicas.Length > 0)
{
await Task.Delay(1000).ForAwait();
replicas = SentinelServerA.SentinelGetReplicaAddresses(ServiceName);
await WaitForRoleAsync(checkConn.GetServer(replicas[0]), "slave", duration.Value.Subtract(sw.Elapsed)).ForAwait();
}
if (waitForReplication)
{
await WaitForReplicationAsync(checkConn.GetServer(master), duration.Value.Subtract(sw.Elapsed)).ForAwait();
}
}
