/// <summary>
/// Starts or restarts the handler listening for the [ProxyUpdateMessage] messages.
/// </summary>
private static void StartNotifyHandler()
{
lock (syncLock)
{
// Use the latest settings to reconnect to the [proxy-notify] channel.
if (proxyNotifyChannel != null)
{
proxyNotifyChannel.Dispose();
}
proxyNotifyChannel = hive.HiveMQ.Internal.GetProxyNotifyChannel(useBootstrap: true).Open();
// Register a handler for [ProxyUpdateMessage] messages that determines
// whether the message is meant for this service instance and handle it.
proxyNotifyChannel.ConsumeAsync <ProxyUpdateMessage>(
async message =>
{
// We cannot process updates in parallel so we'll use an
// AsyncMutex to prevent this.
using (await asyncLock.AcquireAsync())
{
var forThisInstance = false;
if (isPublic)
{
forThisInstance = message.PublicProxy && !isBridge ||
message.PublicBridge && isBridge;
}
else
{
forThisInstance = message.PrivateProxy && !isBridge ||
message.PrivateBridge && isBridge;
}
if (!forThisInstance)
{
log.LogInfo(() => $"HAPROXY-SHIM: Received but ignorning: {message}");
return;
}
log.LogInfo(() => $"HAPROXY-SHIM: Received: {message}");
var jitter = NeonHelper.RandTimespan(HiveConst.MaxJitter);
log.LogDebug(() => $"HAPROXY-SHIM: Jitter delay [{jitter}].");
await Task.Delay(jitter);
await ConfigureHAProxy();
}
});
}
}