preprocessPublishOptions method
Implementation
@visibleForTesting
Future<PubSubPublishOptions> preprocessPublishOptions(
JID jid,
String node,
PubSubPublishOptions options,
) async {
if (options.maxItems != null) {
final dm = getAttributes().getManagerById<DiscoManager>(discoManager)!;
final result = await dm.discoInfoQuery(jid);
if (result.isType<DiscoError>()) {
if (options.maxItems == 'max') {
logger.severe(
'disco#info query failed and options.maxItems is set to "max".',
);
return options;
}
}
final nodeMultiItemsSupported = result.isType<DiscoInfo>() &&
result.get<DiscoInfo>().features.contains(pubsubNodeConfigMultiItems);
final nodeMaxSupported = result.isType<DiscoInfo>() &&
result.get<DiscoInfo>().features.contains(pubsubNodeConfigMax);
if (options.maxItems != null && !nodeMultiItemsSupported) {
// TODO(PapaTutuWawa): Here, we need to admit defeat
logger.finest('PubSub host does not support multi-items!');
return PubSubPublishOptions(
accessModel: options.accessModel,
);
} else if (options.maxItems == 'max' && !nodeMaxSupported) {
logger.finest(
'PubSub host does not support node-config-max. Working around it',
);
final count = await _getNodeItemCount(jid, node) + 1;
return PubSubPublishOptions(
accessModel: options.accessModel,
maxItems: '$count',
);
}
}
return options;
}