internal async static Task AddListenerAsync(ConnectionMultiplexer multiplexer, ConnectionMultiplexer.LogProxy logProxy)
{
try
{
var sub = multiplexer.GetSubscriber();
if (sub == null)
{
logProxy?.WriteLine("Failed to GetSubscriber for AzureRedisEvents");
return;
}
await sub.SubscribeAsync(PubSubChannelName, async (channel, message) =>
{
var newMessage = new AzureMaintenanceEvent(message);
multiplexer.InvokeServerMaintenanceEvent(newMessage);
switch (newMessage.NotificationType)
{
case AzureNotificationType.NodeMaintenanceEnded:
case AzureNotificationType.NodeMaintenanceFailoverComplete:
await multiplexer.ReconfigureAsync(first: false, reconfigureAll: true, log: logProxy, blame: null, cause: $"Azure Event: {newMessage.NotificationType}").ForAwait();
break;
}
}).ForAwait();
}
catch (Exception e)
{
logProxy?.WriteLine($"Encountered exception: {e}");
}
}
internal async static Task AddListenersAsync(ConnectionMultiplexer muxer, LogProxy logProxy)
{
if (!muxer.CommandMap.IsAvailable(RedisCommand.SUBSCRIBE))
{
return;
}
if (muxer.RawConfig.IsAzureEndpoint())
{
await AzureMaintenanceEvent.AddListenerAsync(muxer, logProxy).ForAwait();
}
// Other providers could be added here later
}
internal async static Task AddListenerAsync(ConnectionMultiplexer multiplexer, Action <string> log = null)
{
if (!multiplexer.CommandMap.IsAvailable(RedisCommand.SUBSCRIBE))
{
return;
}
try
{
var sub = multiplexer.GetSubscriber();
if (sub == null)
{
log?.Invoke("Failed to GetSubscriber for AzureRedisEvents");
return;
}
await sub.SubscribeAsync(PubSubChannelName, async (_, message) =>
{
var newMessage = new AzureMaintenanceEvent(message);
newMessage.NotifyMultiplexer(multiplexer);
switch (newMessage.NotificationType)
{
case AzureNotificationType.NodeMaintenanceEnded:
case AzureNotificationType.NodeMaintenanceFailoverComplete:
case AzureNotificationType.NodeMaintenanceScaleComplete:
await multiplexer.ReconfigureAsync($"Azure Event: {newMessage.NotificationType}").ForAwait();
break;
}
}).ForAwait();
}
catch (Exception e)
{
log?.Invoke($"Encountered exception: {e}");
}
}
