public void Declare(Exchange exchange, Queue queue, params RoutingKey[] routingKeys)
{
using (var channel = PublisherConnection.CreateModel())
{
exchange.Declare(channel);
queue.Declare(channel);
foreach (var key in routingKeys)
{
queue.Bind(channel, exchange, key);
}
channel.Close();
}
}
private void PublishBufferOnCleared(IEnumerable <BatchItem> removedItems)
{
var items = removedItems.ToList();
try
{
Policy
.Handle <Exception>()
.WaitAndRetry(
_options.Value.PublishMaxRetry,
_ => TimeSpan.FromMilliseconds(_options.Value.PublishRetryDelayInMilliseconds),
(exception, span) =>
{
_logger?.WriteException("Publisher", exception,
new KeyValuePair <string, object>("Events", removedItems));
})
.Execute(() =>
{
using var channel = PublisherConnection.CreateModel();
channel.ConfirmSelect();
var batch = channel.CreateBasicPublishBatch();
try
{
foreach (var group in items.GroupBy(x => (x.Exchange, x.Queue, x.RoutingKey)))
{
var(exchange, queue, routingKey) = @group.Key;
exchange.Declare(channel);
queue?.Declare(channel);
queue?.Bind(channel, exchange, routingKey);
foreach (var item in @group)
{
var(body, basicProperties) =
item.Message.GetData(channel, _serializer);
batch.Add(exchange.Name.Value, routingKey.Value, false,
basicProperties, body);
}
}
batch.Publish();
}
finally
{
channel.WaitForConfirmsOrDie();
channel.Close();
}
});
PublishSuccessed?.Invoke(items.AsReadOnly());
}
catch (Exception ex)
{
_logger?.WriteException(nameof(PublishBufferOnCleared), ex,
new KeyValuePair <string, object>("Events", items));
if (PublishFailed == null)
{
throw;
}
PublishFailed.Invoke(items.AsReadOnly(), ex);
}
}
