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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"
/**
* Verify prioritization of non-message ops.
* MO:
*
* - Seed topic with 1000 messages
* - Start consumer with auto offset commit disabled,
* but with commit and stats callbacks registered,
* - Consume one message
* - Commit that message manually
* - Consume one message per second
* - The commit callback should be fired within reasonable time, long before
* - The stats callback should behave the same.
* all messages are consumed.
*/
class MyCbs : public RdKafka::OffsetCommitCb, public RdKafka::EventCb {
public:
int seen_commit;
int seen_stats;
void offset_commit_cb(RdKafka::ErrorCode err,
std::vector<RdKafka::TopicPartition *> &offsets) {
if (err)
Test::Fail("Offset commit failed: " + RdKafka::err2str(err));
seen_commit++;
Test::Say("Got commit callback!\n");
}
void event_cb(RdKafka::Event &event) {
switch (event.type()) {
case RdKafka::Event::EVENT_STATS:
Test::Say("Got stats callback!\n");
seen_stats++;
break;
default:
break;
}
}
};
static void do_test_commit_cb(void) {
const int msgcnt = test_quick ? 100 : 1000;
std::string errstr;
RdKafka::ErrorCode err;
std::string topic = Test::mk_topic_name("0060-op_prio", 1);
test_produce_msgs_easy(topic.c_str(), 0, 0, msgcnt);
/*
* Create consumer
*/
/* Create consumer */
RdKafka::Conf *conf;
Test::conf_init(&conf, NULL, 10);
Test::conf_set(conf, "group.id", topic);
Test::conf_set(conf, "socket.timeout.ms", "10000");
Test::conf_set(conf, "enable.auto.commit", "false");
Test::conf_set(conf, "enable.partition.eof", "false");
Test::conf_set(conf, "auto.offset.reset", "earliest");
Test::conf_set(conf, "statistics.interval.ms", "1000");
MyCbs cbs;
cbs.seen_commit = 0;
cbs.seen_stats = 0;
if (conf->set("offset_commit_cb", (RdKafka::OffsetCommitCb *)&cbs, errstr) !=
RdKafka::Conf::CONF_OK)
Test::Fail("Failed to set commit callback: " + errstr);
if (conf->set("event_cb", (RdKafka::EventCb *)&cbs, errstr) !=
RdKafka::Conf::CONF_OK)
Test::Fail("Failed to set event callback: " + errstr);
RdKafka::KafkaConsumer *c = RdKafka::KafkaConsumer::create(conf, errstr);
if (!c)
Test::Fail("Failed to create KafkaConsumer: " + errstr);
delete conf;
/* Subscribe */
std::vector<std::string> topics;
topics.push_back(topic);
if ((err = c->subscribe(topics)))
Test::Fail("subscribe failed: " + RdKafka::err2str(err));
/* Wait for messages and commit callback. */
Test::Say("Consuming topic " + topic + "\n");
int cnt = 0;
while (!cbs.seen_commit || !cbs.seen_stats) {
RdKafka::Message *msg = c->consume(tmout_multip(1000));
if (!msg->err()) {
cnt++;
Test::Say(tostr() << "Received message #" << cnt << "\n");
if (cnt > 10)
Test::Fail(tostr() << "Should've seen the "
"offset commit ("
<< cbs.seen_commit
<< ") and "
"stats callbacks ("
<< cbs.seen_stats << ") by now");
/* Commit the first message to trigger the offset commit_cb */
if (cnt == 1) {
err = c->commitAsync(msg);
if (err)
Test::Fail("commitAsync() failed: " + RdKafka::err2str(err));
rd_sleep(1); /* Sleep to simulate slow processing, making sure
* that the offset commit callback op gets
* inserted on the consume queue in front of
* the messages. */
}
} else if (msg->err() == RdKafka::ERR__TIMED_OUT)
; /* Stil rebalancing? */
else
Test::Fail("consume() failed: " + msg->errstr());
delete msg;
}
c->close();
delete c;
}
extern "C" {
int main_0060_op_prio(int argc, char **argv) {
do_test_commit_cb();
return 0;
}
}
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