public string SendMessage()
{
try
{
// Start an activity with a name following the semantic convention of the OpenTelemetry messaging specification.
// https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/semantic_conventions/messaging.md#span-name
var activityName = $"{RabbitMqHelper.TestQueueName} send";
using (var activity = ActivitySource.StartActivity(activityName, ActivityKind.Producer))
{
var props = this.channel.CreateBasicProperties();
// Depending on Sampling (and whether a listener is registered or not), the
// activity above may not be created.
// If it is created, then propagate its context.
// If it is not created, the propagate the Current context,
// if any.
ActivityContext contextToInject = default;
if (activity != null)
{
this.logger.LogInformation("Injecting Context From RabbitMqHelper Activity");
contextToInject = activity.Context;
}
else if (Activity.Current != null)
{
this.logger.LogInformation("Injecting Context From Some Existing Activity");
contextToInject = Activity.Current.Context;
}
// Inject the ActivityContext into the message headers to propagate trace context to the receiving service.
//Propagator.Inject(new PropagationContext(activity.Context, Baggage.Current), props, this.InjectTraceContextIntoBasicProperties);
Propagator.Inject(new PropagationContext(contextToInject, Baggage.Current), props, this.InjectTraceContextIntoBasicProperties);
/* ktully
* The code below is a back-port to support nuget 0.4.0-beta2
* The above code is the way to do it for the currentrelease (0.5.0-beta2)!!
*/
//TextFormat.Inject(activity.Context, props, this.InjectTraceContextIntoBasicProperties);
// The OpenTelemetry messaging specification defines a number of attributes. These attributes are added here.
RabbitMqHelper.AddMessagingTags(activity);
var body = $"Published message: DateTime.Now = {DateTime.Now}.";
this.channel.BasicPublish(
exchange: RabbitMqHelper.DefaultExchangeName,
routingKey: RabbitMqHelper.TestQueueName,
basicProperties: props,
body: Encoding.UTF8.GetBytes(body));
this.logger.LogInformation($"Message sent: [{body}]");
return(body);
}
}
catch (Exception ex)
{
this.logger.LogError(ex, "Message publishing failed.");
throw;
}
}
public void StartConsumer()
{
this.logger.LogInformation("Waiting ANOTHER 5 seconds for RabbitMQ to boot...");
Thread.Sleep(5000);
this.logger.LogInformation("5 seconds elapsed, calling StartConsumer!");
RabbitMqHelper.StartConsumer(this.channel, this.ReceiveMessage);
}
public MessageReceiver(ILogger <MessageReceiver> logger)
{
this.logger = logger;
this.logger.LogInformation("Waiting 20 seconds for RabbitMQ to boot...");
//Task.Delay(5000).Wait();
Thread.Sleep(20000);
this.logger.LogInformation("20 seconds elapsed, initializing RabbitMqReceiver!");
this.connection = RabbitMqHelper.CreateConnection();
this.channel = RabbitMqHelper.CreateModelAndDeclareTestQueue(this.connection);
}
public string SendMessage()
{
try
{
// Start an activity with a name following the semantic convention of the OpenTelemetry messaging specification.
// https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/semantic_conventions/messaging.md#span-name
var activityName = $"{RabbitMqHelper.TestQueueName} send";
using (var activity = ActivitySource.StartActivity(activityName, ActivityKind.Producer))
{
var props = this.channel.CreateBasicProperties();
if (activity != null)
{
// Inject the ActivityContext into the message headers to propagate trace context to the receiving service.
Propagator.Inject(new PropagationContext(activity.Context, Baggage.Current), props, this.InjectTraceContextIntoBasicProperties);
// The OpenTelemetry messaging specification defines a number of attributes. These attributes are added here.
RabbitMqHelper.AddMessagingTags(activity);
}
var body = $"Published message: DateTime.Now = {DateTime.Now}.";
this.channel.BasicPublish(
exchange: RabbitMqHelper.DefaultExchangeName,
routingKey: RabbitMqHelper.TestQueueName,
basicProperties: props,
body: Encoding.UTF8.GetBytes(body));
this.logger.LogInformation($"Message sent: [{body}]");
return(body);
}
}
catch (Exception ex)
{
this.logger.LogError(ex, "Message publishing failed.");
throw;
}
}
public MessageSender(ILogger <MessageSender> logger)
{
this.logger = logger;
this.connection = RabbitMqHelper.CreateConnection();
this.channel = RabbitMqHelper.CreateModelAndDeclareTestQueue(this.connection);
}
public void StartConsumer()
{
RabbitMqHelper.StartConsumer(this.channel, this.ReceiveMessage);
}