private void HandleLoadCompleted(Action continueWith,
ClientMessage.ReadStreamEventsBackwardCompleted readStreamEventsBackwardCompleted)
{
switch (readStreamEventsBackwardCompleted.Result)
{
case ReadStreamResult.Success:
try {
_config =
PersistentSubscriptionConfig.FromSerializedForm(
readStreamEventsBackwardCompleted.Events[0].Event.Data);
foreach (var entry in _config.Entries)
{
if (!_consumerStrategyRegistry.ValidateStrategy(entry.NamedConsumerStrategy))
{
Log.Error(
"A persistent subscription exists with an invalid consumer strategy '{strategy}'. Ignoring it.",
entry.NamedConsumerStrategy);
continue;
}
CreateSubscriptionGroup(entry.Stream,
entry.Group,
entry.ResolveLinkTos,
entry.StartFrom,
entry.ExtraStatistics,
entry.MaxRetryCount,
entry.LiveBufferSize,
entry.HistoryBufferSize,
entry.ReadBatchSize,
ToTimeout(entry.CheckPointAfter),
entry.MinCheckPointCount,
entry.MaxCheckPointCount,
entry.MaxSubscriberCount,
entry.NamedConsumerStrategy,
ToTimeout(entry.MessageTimeout));
}
continueWith();
} catch (Exception ex) {
Log.ErrorException(ex, "There was an error loading configuration from storage.");
}
break;
case ReadStreamResult.NoStream:
_config = new PersistentSubscriptionConfig {
Version = "2"
};
continueWith();
break;
default:
throw new Exception(readStreamEventsBackwardCompleted.Result +
" is an unexpected result writing subscription configuration.");
}
}
public void output_can_be_read_as_input_and_keep_same_values()
{
var config = new PersistentSubscriptionConfig();
config.Updated = new DateTime(2014,08, 14);
config.UpdatedBy = "Greg";
config.Version = "1";
config.Entries = new List<PersistentSubscriptionEntry>();
config.Entries.Add(new PersistentSubscriptionEntry(){Group="foo", ResolveLinkTos = true, Stream = "Stream"});
var data = config.GetSerializedForm();
var config2 = PersistentSubscriptionConfig.FromSerializedForm(data);
Assert.AreEqual(1, config2.Entries.Count);
Assert.AreEqual(config.Updated, config2.Updated);
Assert.AreEqual(config.UpdatedBy, config2.UpdatedBy);
}
private static void UpdateIfRequired(PersistentSubscriptionConfig ret)
{
if (ret.Version == "1")
{
if (ret.Entries != null)
{
foreach (var persistentSubscriptionEntry in ret.Entries)
{
if (string.IsNullOrEmpty(persistentSubscriptionEntry.NamedConsumerStrategy))
{
persistentSubscriptionEntry.NamedConsumerStrategy = persistentSubscriptionEntry.PreferRoundRobin
? SystemConsumerStrategies.RoundRobin
: SystemConsumerStrategies.DispatchToSingle;
}
}
}
ret.Version = "2";
}
}
private static void UpdateIfRequired(PersistentSubscriptionConfig ret)
{
if (ret.Version == "1")
{
if (ret.Entries != null)
{
foreach (var persistentSubscriptionEntry in ret.Entries)
{
if (string.IsNullOrEmpty(persistentSubscriptionEntry.NamedConsumerStrategy))
{
persistentSubscriptionEntry.NamedConsumerStrategy = persistentSubscriptionEntry.PreferRoundRobin
? SystemConsumerStrategies.RoundRobin
: SystemConsumerStrategies.DispatchToSingle;
}
}
}
ret.Version = "2";
}
}
