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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2016, Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <iostream>
#include "testcpp.h"
/**
* Issue #1306
*
* Consume from an empty topic using Consumer and KafkaConsumer.
*/
static void do_test_empty_topic_consumer() {
std::string errstr;
std::string topic = Test::mk_topic_name("0067_empty_topic", 1);
const int32_t partition = 0;
RdKafka::Conf *conf;
Test::conf_init(&conf, NULL, 0);
Test::conf_set(conf, "enable.partition.eof", "true");
Test::conf_set(conf, "allow.auto.create.topics", "true");
/* Create simple consumer */
RdKafka::Consumer *consumer = RdKafka::Consumer::create(conf, errstr);
if (!consumer)
Test::Fail("Failed to create Consumer: " + errstr);
RdKafka::Topic *rkt = RdKafka::Topic::create(consumer, topic, NULL, errstr);
if (!rkt)
Test::Fail("Simple Topic failed: " + errstr);
/* Create the topic through a metadata request. */
Test::Say("Creating empty topic " + topic + "\n");
RdKafka::Metadata *md;
RdKafka::ErrorCode err =
consumer->metadata(false, rkt, &md, tmout_multip(10 * 1000));
if (err)
Test::Fail("Failed to create topic " + topic + ": " +
RdKafka::err2str(err));
delete md;
/* Start consumer */
err = consumer->start(rkt, partition, RdKafka::Topic::OFFSET_BEGINNING);
if (err)
Test::Fail("Consume start() failed: " + RdKafka::err2str(err));
/* Consume using legacy consumer, should give an EOF and nothing else. */
Test::Say("Simple Consumer: consuming\n");
RdKafka::Message *msg =
consumer->consume(rkt, partition, tmout_multip(10 * 1000));
if (msg->err() != RdKafka::ERR__PARTITION_EOF)
Test::Fail("Simple consume() expected EOF, got " +
RdKafka::err2str(msg->err()));
delete msg;
/* Nothing else should come now, just a consume() timeout */
msg = consumer->consume(rkt, partition, 1 * 1000);
if (msg->err() != RdKafka::ERR__TIMED_OUT)
Test::Fail("Simple consume() expected timeout, got " +
RdKafka::err2str(msg->err()));
delete msg;
consumer->stop(rkt, partition);
delete rkt;
delete consumer;
/*
* Now do the same thing using the high-level KafkaConsumer.
*/
Test::conf_set(conf, "group.id", topic);
Test::conf_set(conf, "enable.partition.eof", "true");
Test::conf_set(conf, "allow.auto.create.topics", "true");
RdKafka::KafkaConsumer *kconsumer =
RdKafka::KafkaConsumer::create(conf, errstr);
if (!kconsumer)
Test::Fail("Failed to create KafkaConsumer: " + errstr);
std::vector<RdKafka::TopicPartition *> part;
part.push_back(RdKafka::TopicPartition::create(topic, partition));
err = kconsumer->assign(part);
if (err)
Test::Fail("assign() failed: " + RdKafka::err2str(err));
RdKafka::TopicPartition::destroy(part);
Test::Say("KafkaConsumer: consuming\n");
msg = kconsumer->consume(tmout_multip(5 * 1000));
if (msg->err() != RdKafka::ERR__PARTITION_EOF)
Test::Fail("KafkaConsumer consume() expected EOF, got " +
RdKafka::err2str(msg->err()));
delete msg;
/* Nothing else should come now, just a consume() timeout */
msg = kconsumer->consume(1 * 1000);
if (msg->err() != RdKafka::ERR__TIMED_OUT)
Test::Fail("KafkaConsumer consume() expected timeout, got " +
RdKafka::err2str(msg->err()));
delete msg;
kconsumer->close();
delete kconsumer;
delete conf;
}
extern "C" {
int main_0067_empty_topic(int argc, char **argv) {
do_test_empty_topic_consumer();
return 0;
}
}
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