amareshmad commented on issue #114:
URL:
https://github.com/apache/pulsar-dotpulsar/issues/114#issuecomment-1274735759
sample app tried in both .net framework and .net core, both sample apps are
working.
same code tested consoles and integrated to product.
using DotPulsar;
using DotPulsar.Abstractions;
using DotPulsar.Exceptions;
using DotPulsar.Extensions;
using System;
using System.Buffers;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace ConsoleApp1
{
internal class Program
{
static void Main(string[] args)
{
}
public async Task TestMethod(string zone)
{
try
{
string myTopic = string.Empty;
if (zone == "east")
myTopic = "persistent://east::xxxx.RequestV1.Queue";
else
myTopic = "persistent://west::xxxxx.RequestV1.Queue";
string SERVICE_URL = "pulsar+ssl://xxxxxxxx.com:6651";
string username = "xxxxxxx";
string password = "xxxxxxxx";
Uri sURl = new(SERVICE_URL);
Console.WriteLine($"building consumer client");
ExceptionHandler pException = new ExceptionHandler();
await using var client = PulsarClient.Builder()
.Authentication(new
AuthenticationBasic1(username, password))
.ServiceUrl(sURl)
.VerifyCertificateName(false)
.VerifyCertificateAuthority(false)
.KeepAliveInterval(TimeSpan.FromSeconds(10))
.RetryInterval(TimeSpan.FromSeconds(2))
.ExceptionHandler(pException.OnException)
.Build();
Console.WriteLine($"creating Consumer.......");
await using var consumer = client.NewConsumer()
.SubscriptionName("xxxx.fdp.extraction.xxxxx-default")
.Topic(myTopic)
.SubscriptionType(SubscriptionType.Shared)
.StateChangedHandler(AuthenticationBasic1.Monitor)
.PriorityLevel(1)
.Create();
Console.WriteLine($"Waiting for consumer message.......");
await foreach (var message in consumer.Messages())
{
Console.WriteLine($"Received consumer:
{Encoding.UTF8.GetString(message.Data.ToArray())}");
await consumer.Acknowledge(message);
}
}
catch (PulsarClientClosedException ex)
{
Console.WriteLine("PulsarClientClosedException message:{0},
stack trace:{1}", ex.Message.ToString(), ex.StackTrace.ToString());
}
catch (PulsarClientDisposedException ex)
{
Console.WriteLine("Exception PulsarClientDisposedException
message:{0}, stack trace:{1}", ex.Message.ToString(), ex.StackTrace.ToString());
}
catch (Exception ex)
{
Console.WriteLine("Exception message:{0}, stack trace:{1}",
ex.Message.ToString(), ex.StackTrace.ToString());
}
}
}
public class AuthenticationBasic1 : IAuthentication
{
private string username;
private string password;
// static private readonly ILog Console.WriteLine =
LogManager.GetLogger(typeof(AuthenticationBasic1));
public AuthenticationBasic1(string uname, string passwd)
{
username = uname;
password = passwd;
}
public string AuthenticationMethodName
{
get { return "oms3.0"; }
}
public ValueTask<byte[]> GetAuthenticationData(CancellationToken
cancellationToken)
{
return new ValueTask<byte[]>(Encoding.UTF8.GetBytes(username +
":" + password));
}
public static void Monitor(ConsumerStateChanged stateChanged)
{
var stateMessage = stateChanged.ConsumerState switch
{
ConsumerState.Active => "is active",
ConsumerState.Inactive => "is inactive",
ConsumerState.Disconnected => "is disconnected",
ConsumerState.Closed => "has closed",
ConsumerState.ReachedEndOfTopic => "has reached end of
topic",
ConsumerState.Faulted => "has faulted",
_ => $"has an unknown state '{stateChanged.ConsumerState}'"
};
var topic = stateChanged.Consumer.Topic;
var state = stateChanged.ConsumerState;
Console.WriteLine($"The consumer for topic '{topic}' changed
state to '{state}'");
}
}
public interface IHandleException
{
/// <summary>
/// Called after an action has thrown an Exception.
/// </summary>
ValueTask OnException(ExceptionContext exceptionContext);
}
public class ExceptionHandler : IHandleException
{
//static private readonly ILog Console.WriteLine =
LogManager.GetLogger(typeof(ExceptionHandler));
public ValueTask OnException(ExceptionContext exceptionContext)
{
Console.WriteLine("An error occured while creating pulsar
client", exceptionContext.Exception);
return new ValueTask();
}
}
}
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