private static MetadataResult ValidateTopic(MetadataResponse.Topic topic)
{
var errorCode = topic.topic_error_code;
if (errorCode.IsSuccess())
{
return(new MetadataResult(isValid: true));
}
if (errorCode.IsRetryable())
{
return(new MetadataResult(errorCode, null, $"topic {topic.topic} returned error code of {errorCode}: Retrying"));
}
return(new MetadataResult(errorCode, false, $"topic {topic.topic} returned an error of {errorCode}"));
}
private static IResponse MetadataResponse(IRequestContext context, byte[] payload, bool hasSize)
{
using (var reader = new BigEndianBinaryReader(payload, hasSize ? 8 : 4)) {
var brokers = new Broker[reader.ReadInt32()];
for (var b = 0; b < brokers.Length; b++)
{
var brokerId = reader.ReadInt32();
var host = reader.ReadString();
var port = reader.ReadInt32();
string rack = null;
if (context.ApiVersion >= 1)
{
rack = reader.ReadString();
}
brokers[b] = new Broker(brokerId, host, port, rack);
}
string clusterId = null;
if (context.ApiVersion >= 2)
{
clusterId = reader.ReadString();
}
int?controllerId = null;
if (context.ApiVersion >= 1)
{
controllerId = reader.ReadInt32();
}
var topics = new MetadataResponse.Topic[reader.ReadInt32()];
for (var t = 0; t < topics.Length; t++)
{
var topicError = (ErrorResponseCode)reader.ReadInt16();
var topicName = reader.ReadString();
bool?isInternal = null;
if (context.ApiVersion >= 1)
{
isInternal = reader.ReadBoolean();
}
var partitions = new MetadataResponse.Partition[reader.ReadInt32()];
for (var p = 0; p < partitions.Length; p++)
{
var partitionError = (ErrorResponseCode)reader.ReadInt16();
var partitionId = reader.ReadInt32();
var leaderId = reader.ReadInt32();
var replicaCount = reader.ReadInt32();
var replicas = replicaCount.Repeat(reader.ReadInt32).ToArray();
var isrCount = reader.ReadInt32();
var isrs = isrCount.Repeat(reader.ReadInt32).ToArray();
partitions[p] = new MetadataResponse.Partition(partitionId, leaderId, partitionError, replicas, isrs);
}
topics[t] = new MetadataResponse.Topic(topicName, topicError, partitions, isInternal);
}
return(new MetadataResponse(brokers, topics, controllerId, clusterId));
}
}