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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2020, 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 <map>
#include <cstring>
#include <cstdlib>
#include "testcpp.h"
extern "C" {
#include "test.h"
#include "tinycthread.h"
#include "rdatomic.h"
}
/**
* Test KafkaConsumer close and destructor behaviour.
*/
struct args {
RdKafka::Queue *queue;
RdKafka::KafkaConsumer *c;
};
static int run_polling_thread(void *p) {
struct args *args = (struct args *)p;
while (!args->c->closed()) {
RdKafka::Message *msg;
/* We use a long timeout to also verify that the
* consume() call is yielded/woken by librdkafka
* when consumer_close_queue() finishes. */
msg = args->queue->consume(60 * 1000 /*60s*/);
if (msg)
delete msg;
}
return 0;
}
static void start_polling_thread(thrd_t *thrd, struct args *args) {
if (thrd_create(thrd, run_polling_thread, (void *)args) != thrd_success)
Test::Fail("Failed to create thread");
}
static void stop_polling_thread(thrd_t thrd, struct args *args) {
int ret;
if (thrd_join(thrd, &ret) != thrd_success)
Test::Fail("Thread join failed");
}
static void do_test_consumer_close(bool do_subscribe,
bool do_unsubscribe,
bool do_close,
bool with_queue) {
std::string testname = tostr()
<< "Test C++ KafkaConsumer close "
<< "subscribe=" << do_subscribe
<< ", unsubscribe=" << do_unsubscribe
<< ", close=" << do_close << ", queue=" << with_queue;
SUB_TEST("%s", testname.c_str());
rd_kafka_mock_cluster_t *mcluster;
const char *bootstraps;
mcluster = test_mock_cluster_new(3, &bootstraps);
std::string errstr;
/*
* Produce messages to topics
*/
const int msgs_per_partition = 10;
RdKafka::Conf *pconf;
Test::conf_init(&pconf, NULL, 10);
Test::conf_set(pconf, "bootstrap.servers", bootstraps);
RdKafka::Producer *p = RdKafka::Producer::create(pconf, errstr);
if (!p)
Test::Fail(tostr() << __FUNCTION__
<< ": Failed to create producer: " << errstr);
delete pconf;
Test::produce_msgs(p, "some_topic", 0, msgs_per_partition, 10,
true /*flush*/);
delete p;
/* Create consumer */
RdKafka::Conf *conf;
Test::conf_init(&conf, NULL, 0);
Test::conf_set(conf, "bootstrap.servers", bootstraps);
Test::conf_set(conf, "group.id", "mygroup");
Test::conf_set(conf, "auto.offset.reset", "beginning");
RdKafka::KafkaConsumer *c = RdKafka::KafkaConsumer::create(conf, errstr);
if (!c)
Test::Fail("Failed to create KafkaConsumer: " + errstr);
delete conf;
if (do_subscribe) {
std::vector<std::string> topics;
topics.push_back("some_topic");
RdKafka::ErrorCode err;
if ((err = c->subscribe(topics)))
Test::Fail("subscribe failed: " + RdKafka::err2str(err));
}
int received = 0;
while (received < msgs_per_partition) {
RdKafka::Message *msg = c->consume(500);
if (msg) {
++received;
delete msg;
}
}
RdKafka::ErrorCode err;
if (do_unsubscribe)
if ((err = c->unsubscribe()))
Test::Fail("unsubscribe failed: " + RdKafka::err2str(err));
if (do_close) {
if (with_queue) {
RdKafka::Queue *queue = RdKafka::Queue::create(c);
struct args args = {queue, c};
thrd_t thrd;
/* Serve queue in background thread until close() is done */
start_polling_thread(&thrd, &args);
RdKafka::Error *error;
Test::Say("Closing with queue\n");
if ((error = c->close(queue)))
Test::Fail("close(queue) failed: " + error->str());
stop_polling_thread(thrd, &args);
Test::Say("Attempting second close\n");
/* A second call should fail */
if (!(error = c->close(queue)))
Test::Fail("Expected second close(queue) to fail");
if (error->code() != RdKafka::ERR__DESTROY)
Test::Fail("Expected second close(queue) to fail with DESTROY, not " +
error->str());
delete error;
delete queue;
} else {
if ((err = c->close()))
Test::Fail("close failed: " + RdKafka::err2str(err));
/* A second call should fail */
if ((err = c->close()) != RdKafka::ERR__DESTROY)
Test::Fail("Expected second close to fail with DESTROY, not " +
RdKafka::err2str(err));
}
}
/* Call an async method that will do nothing but verify that we're not
* crashing due to use-after-free. */
if ((err = c->commitAsync()))
Test::Fail("Expected commitAsync close to succeed, got " +
RdKafka::err2str(err));
delete c;
test_mock_cluster_destroy(mcluster);
SUB_TEST_PASS();
}
extern "C" {
int main_0116_kafkaconsumer_close(int argc, char **argv) {
/* Parameters:
* subscribe, unsubscribe, close, with_queue */
for (int i = 0; i < 1 << 4; i++) {
bool subscribe = i & (1 << 0);
bool unsubscribe = i & (1 << 1);
bool do_close = i & (1 << 2);
bool with_queue = i & (1 << 3);
do_test_consumer_close(subscribe, unsubscribe, do_close, with_queue);
}
return 0;
}
}
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