public void newChannel(String queue_id, AMQHandler task) throws IOException {
channel = (ChannelN) connection.createChannel();
// channel.queueDeclare(queue_id, true, false, false, null);
channel.basicQos(0);
consumer = new QueueingConsumer(channel);
channel.basicConsume(queue_id, false, consumer);
task.setConsumer(consumer);
thread_pool.execute(task);
}
@Test
public void openingTooManyChannels() throws Exception {
int n = 48;
try {
Host.rabbitmqctl("eval 'application:set_env(rabbit, channel_max, " + n + ").'");
ConnectionFactory cf = TestUtils.connectionFactory();
Connection conn = cf.newConnection();
assertEquals(n, conn.getChannelMax());
for (int i = 1; i <= n; i++) {
assertNotNull(conn.createChannel(i));
}
// ChannelManager guards against channel.open being sent
assertNull(conn.createChannel(n + 1));
// Construct a channel directly
final ChannelN ch =
new ChannelN(
((AutorecoveringConnection) conn).getDelegate(),
n + 1,
new ConsumerWorkService(
Executors.newSingleThreadExecutor(),
Executors.defaultThreadFactory(),
ConnectionFactory.DEFAULT_SHUTDOWN_TIMEOUT));
conn.addShutdownListener(
new ShutdownListener() {
public void shutdownCompleted(ShutdownSignalException cause) {
// make sure channel.open continuation is released
ch.processShutdownSignal(cause, true, true);
}
});
ch.open();
fail("expected channel.open to cause a connection exception");
} catch (IOException e) {
checkShutdownSignal(530, e);
} finally {
Host.rabbitmqctl("eval 'application:set_env(rabbit, channel_max, 0).'");
}
}