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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 "test.h"
#include "../src/rdkafka_proto.h"
/**
* @name Verify that producer and consumer resumes operation after
* a topic has been deleted and recreated.
*/
/**
* The message value to produce, one of:
* "before" - before topic deletion
* "during" - during topic deletion
* "after" - after topic has been re-created
* "end" - stop producing
*/
static mtx_t value_mtx;
static char *value;
static const int msg_rate = 10; /**< Messages produced per second */
static struct test *this_test; /**< Exposes current test struct (in TLS) to
* producer thread. */
/**
* @brief Treat all error_cb as non-test-fatal.
*/
static int
is_error_fatal(rd_kafka_t *rk, rd_kafka_resp_err_t err, const char *reason) {
return rd_false;
}
/**
* @brief Producing thread
*/
static int run_producer(void *arg) {
const char *topic = arg;
rd_kafka_t *producer = test_create_producer();
int ret = 0;
test_curr = this_test;
/* Don't check message status */
test_curr->exp_dr_status = (rd_kafka_msg_status_t)-1;
while (1) {
rd_kafka_resp_err_t err;
mtx_lock(&value_mtx);
if (!strcmp(value, "end")) {
mtx_unlock(&value_mtx);
break;
} else if (strcmp(value, "before")) {
/* Ignore Delivery report errors after topic
* has been deleted and eventually re-created,
* we rely on the consumer to verify that
* messages are produced. */
test_curr->ignore_dr_err = rd_true;
}
err = rd_kafka_producev(
producer, RD_KAFKA_V_TOPIC(topic),
RD_KAFKA_V_MSGFLAGS(RD_KAFKA_MSG_F_COPY),
RD_KAFKA_V_VALUE(value, strlen(value)), RD_KAFKA_V_END);
if (err == RD_KAFKA_RESP_ERR_UNKNOWN_TOPIC_OR_PART ||
err == RD_KAFKA_RESP_ERR__UNKNOWN_TOPIC)
TEST_SAY("Produce failed (expectedly): %s\n",
rd_kafka_err2name(err));
else
TEST_ASSERT(!err, "producev() failed: %s",
rd_kafka_err2name(err));
mtx_unlock(&value_mtx);
rd_usleep(1000000 / msg_rate, NULL);
rd_kafka_poll(producer, 0);
}
if (rd_kafka_flush(producer, 5000)) {
TEST_WARN("Failed to flush all message(s), %d remain\n",
rd_kafka_outq_len(producer));
/* Purge the messages to see which partition they were for */
rd_kafka_purge(producer, RD_KAFKA_PURGE_F_QUEUE |
RD_KAFKA_PURGE_F_INFLIGHT);
rd_kafka_flush(producer, 5000);
TEST_SAY("%d message(s) in queue after purge\n",
rd_kafka_outq_len(producer));
ret = 1; /* Fail test from main thread */
}
rd_kafka_destroy(producer);
return ret;
}
/**
* @brief Expect at least \p cnt messages with value matching \p exp_value,
* else fail the current test.
*/
static void
expect_messages(rd_kafka_t *consumer, int cnt, const char *exp_value) {
int match_cnt = 0, other_cnt = 0, err_cnt = 0;
size_t exp_len = strlen(exp_value);
TEST_SAY("Expecting >= %d messages with value \"%s\"...\n", cnt,
exp_value);
while (match_cnt < cnt) {
rd_kafka_message_t *rkmessage;
rkmessage = rd_kafka_consumer_poll(consumer, 1000);
if (!rkmessage)
continue;
if (rkmessage->err) {
TEST_SAY("Consume error: %s\n",
rd_kafka_message_errstr(rkmessage));
err_cnt++;
} else if (rkmessage->len == exp_len &&
!memcmp(rkmessage->payload, exp_value, exp_len)) {
match_cnt++;
} else {
TEST_SAYL(3,
"Received \"%.*s\", expected \"%s\": "
"ignored\n",
(int)rkmessage->len,
(const char *)rkmessage->payload, exp_value);
other_cnt++;
}
rd_kafka_message_destroy(rkmessage);
}
TEST_SAY(
"Consumed %d messages matching \"%s\", "
"ignored %d others, saw %d error(s)\n",
match_cnt, exp_value, other_cnt, err_cnt);
}
/**
* @brief Test topic create + delete + create with first topic having
* \p part_cnt_1 partitions and second topic having \p part_cnt_2 .
*/
static void do_test_create_delete_create(int part_cnt_1, int part_cnt_2) {
rd_kafka_t *consumer;
thrd_t producer_thread;
const char *topic = test_mk_topic_name(__FUNCTION__, 1);
int ret = 0;
TEST_SAY(_C_MAG
"[ Test topic create(%d parts)+delete+create(%d parts) ]\n",
part_cnt_1, part_cnt_2);
consumer = test_create_consumer(topic, NULL, NULL, NULL);
/* Create topic */
test_create_topic(consumer, topic, part_cnt_1, 3);
/* Start consumer */
test_consumer_subscribe(consumer, topic);
test_consumer_wait_assignment(consumer, rd_true);
mtx_lock(&value_mtx);
value = "before";
mtx_unlock(&value_mtx);
/* Create producer thread */
if (thrd_create(&producer_thread, run_producer, (void *)topic) !=
thrd_success)
TEST_FAIL("thrd_create failed");
/* Consume messages for 5s */
expect_messages(consumer, msg_rate * 5, value);
/* Delete topic */
mtx_lock(&value_mtx);
value = "during";
mtx_unlock(&value_mtx);
test_delete_topic(consumer, topic);
rd_sleep(5);
/* Re-create topic */
test_create_topic(consumer, topic, part_cnt_2, 3);
mtx_lock(&value_mtx);
value = "after";
mtx_unlock(&value_mtx);
/* Consume for 5 more seconds, should see new messages */
expect_messages(consumer, msg_rate * 5, value);
rd_kafka_destroy(consumer);
/* Wait for producer to exit */
mtx_lock(&value_mtx);
value = "end";
mtx_unlock(&value_mtx);
if (thrd_join(producer_thread, &ret) != thrd_success || ret != 0)
TEST_FAIL("Producer failed: see previous errors");
TEST_SAY(_C_GRN
"[ Test topic create(%d parts)+delete+create(%d parts): "
"PASS ]\n",
part_cnt_1, part_cnt_2);
}
int main_0107_topic_recreate(int argc, char **argv) {
this_test = test_curr; /* Need to expose current test struct (in TLS)
* to producer thread. */
this_test->is_fatal_cb = is_error_fatal;
mtx_init(&value_mtx, mtx_plain);
test_conf_init(NULL, NULL, 60);
do_test_create_delete_create(10, 3);
do_test_create_delete_create(3, 6);
return 0;
}
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