/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2012-2015, 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"
/* Typical include path would be <librdkafka/rdkafka.h>, but this program
* is built from within the librdkafka source tree and thus differs. */
#include "rdkafka.h" /* for Kafka driver */
/**
* Consume with batch + queue interface
*
*/
static int do_test_consume_batch (void) {
#define topic_cnt 2
char *topics[topic_cnt];
const int partition_cnt = 2;
rd_kafka_t *rk;
rd_kafka_queue_t *rkq;
rd_kafka_topic_t *rkts[topic_cnt];
rd_kafka_resp_err_t err;
const int msgcnt = 10000;
uint64_t testid;
int i, p;
int batch_cnt = 0;
int remains;
testid = test_id_generate();
/* Produce messages */
for (i = 0 ; i < topic_cnt ; i++) {
topics[i] = rd_strdup(test_mk_topic_name(__FUNCTION__, 1));
for (p = 0 ; p < partition_cnt ; p++)
test_produce_msgs_easy(topics[i], testid, p,
msgcnt / topic_cnt /
partition_cnt);
}
/* Create simple consumer */
rk = test_create_consumer(NULL, NULL, NULL, NULL);
/* Create generic consume queue */
rkq = rd_kafka_queue_new(rk);
for (i = 0 ; i < topic_cnt ; i++) {
/* Create topic object */
rkts[i] = test_create_topic_object(rk, topics[i],
"auto.offset.reset",
"smallest",
NULL);
/* Start consuming each partition and redirect
* messages to queue */
TEST_SAY("Start consuming topic %s partitions 0..%d\n",
rd_kafka_topic_name(rkts[i]), partition_cnt);
for (p = 0 ; p < partition_cnt ; p++) {
err = rd_kafka_consume_start_queue(
rkts[i], p, RD_KAFKA_OFFSET_BEGINNING, rkq);
if (err)
TEST_FAIL("Failed to start consuming: %s\n",
rd_kafka_err2str(err));
}
}
remains = msgcnt;
/* Consume messages from common queue using batch interface. */
TEST_SAY("Consume %d messages from queue\n", remains);
while (remains > 0) {
rd_kafka_message_t *rkmessage[1000];
ssize_t r;
test_timing_t t_batch;
TIMING_START(&t_batch, "CONSUME.BATCH");
r = rd_kafka_consume_batch_queue(rkq, 1000, rkmessage, 1000);
TIMING_STOP(&t_batch);
TEST_SAY("Batch consume iteration #%d: Consumed %"PRIdsz
"/1000 messages\n", batch_cnt, r);
if (r == -1)
TEST_FAIL("Failed to consume messages: %s\n",
rd_kafka_err2str(rd_kafka_last_error()));
remains -= (int)r;
for (i = 0 ; i < r ; i++)
rd_kafka_message_destroy(rkmessage[i]);
batch_cnt++;
}
TEST_SAY("Stopping consumer\n");
for (i = 0 ; i < topic_cnt ; i++) {
for (p = 0 ; p < partition_cnt ; p++) {
err = rd_kafka_consume_stop(rkts[i], p);
if (err)
TEST_FAIL("Failed to stop consuming: %s\n",
rd_kafka_err2str(err));
}
rd_kafka_topic_destroy(rkts[i]);
rd_free(topics[i]);
}
rd_kafka_queue_destroy(rkq);
rd_kafka_destroy(rk);
return 0;
}
int main_0022_consume_batch (int argc, char **argv) {
int fails = 0;
fails += do_test_consume_batch();
if (fails > 0)
TEST_FAIL("See %d previous error(s)\n", fails);
return 0;
}