public static void Main(string[] args)
{
string brokerList = args[0];
var topics = args.Skip(1).ToList();
var config = new Config() { GroupId = "simple-csharp-consumer" };
using (var consumer = new EventConsumer(config, brokerList))
{
consumer.OnMessage += (obj, msg) =>
{
string text = Encoding.UTF8.GetString(msg.Payload, 0, msg.Payload.Length);
Console.WriteLine($"Topic: {msg.Topic} Partition: {msg.Partition} Offset: {msg.Offset} {text}");
};
consumer.Assign(new List<TopicPartitionOffset> {new TopicPartitionOffset("foo", 0, 5)});
consumer.Start();
Console.WriteLine("Started consumer, press enter to stop consuming");
Console.ReadLine();
}
}
public static void Run(string brokerList, List<string> topics)
{
bool enableAutoCommit = false;
var config = new Config()
{
GroupId = "advanced-csharp-consumer",
EnableAutoCommit = enableAutoCommit,
StatisticsInterval = TimeSpan.FromSeconds(60)
};
using (var consumer = new EventConsumer(config, brokerList))
{
consumer.OnMessage += (obj, msg) => {
string text = Encoding.UTF8.GetString(msg.Payload, 0, msg.Payload.Length);
Console.WriteLine($"Topic: {msg.Topic} Partition: {msg.Partition} Offset: {msg.Offset} {text}");
if (!enableAutoCommit && msg.Offset % 10 == 0)
{
Console.WriteLine($"Committing offset");
consumer.Commit(msg).Wait();
Console.WriteLine($"Committed offset");
}
};
consumer.OnError += (obj, errorCode) =>
{
Console.WriteLine($"Error: {errorCode}");
};
consumer.OnEndReached += (obj, end) => {
Console.WriteLine($"Reached end of topic {end.Topic} partition {end.Partition}, next message will be at offset {end.Offset}");
};
if (enableAutoCommit)
{
consumer.OnOffsetCommit += (obj, commit) => {
if (commit.Error != ErrorCode.NO_ERROR)
{
Console.WriteLine($"Failed to commit offsets: {commit.Error}");
}
Console.WriteLine($"Successfully committed offsets: [{string.Join(", ", commit.Offsets)}]");
};
}
consumer.OnPartitionsAssigned += (obj, partitions) => {
Console.WriteLine($"Assigned partitions: [{string.Join(", ", partitions)}]");
consumer.Assign(partitions);
};
consumer.OnPartitionsRevoked += (obj, partitions) => {
Console.WriteLine($"Revoked partitions: [{string.Join(", ", partitions)}]");
consumer.Unassign();
};
consumer.OnStatistics += (obj, json) => {
Console.WriteLine($"Statistics: {json}");
};
consumer.Subscribe(topics);
consumer.Start();
Console.WriteLine($"Assigned to: [{string.Join(", ", consumer.Assignment)}]");
Console.WriteLine($"Subscribed to: [{string.Join(", ", consumer.Subscription)}]");
Console.WriteLine($"Started consumer {consumer.MemberId}, press enter to stop consuming");
Console.ReadLine();
}
}
