/*
 * 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"
#include "rdkafka.h"


/**
 * Make sure library behaves when the partition count for a topic changes.
 * This test requires to be run under trivup to be able to use kafka-topics.sh
 */



/**
 * - Create topic with 2 partitions
 * - Start producing messages to UA partition
 * - Change to 4 partitions
 * - Produce more messages to UA partition
 * - Wait for DRs
 * - Close
 */
 
static void test_producer_partition_cnt_change (void) {
	rd_kafka_t *rk;
	rd_kafka_conf_t *conf;
	rd_kafka_topic_t *rkt;
	const char *topic = test_mk_topic_name(__FUNCTION__, 1);
	const int partition_cnt = 4;
	int msgcnt = 100000;
	test_timing_t t_destroy;
	int produced = 0;

	test_kafka_topics("--create --topic %s --replication-factor 1 "
			  "--partitions %d --force",
			  topic, partition_cnt/2);

	test_conf_init(&conf, NULL, 20);

	rk = test_create_handle(RD_KAFKA_PRODUCER, conf);
	rkt = test_create_topic_object(rk, __FUNCTION__,
				       "message.timeout.ms", "5000", NULL);

	test_produce_msgs_nowait(rk, rkt, 0, RD_KAFKA_PARTITION_UA, 0, msgcnt/2,
				 NULL, 100, &produced);

	test_kafka_topics("--alter --topic %s --partitions %d --force",
			  topic, partition_cnt);

	test_produce_msgs_nowait(rk, rkt, 0, RD_KAFKA_PARTITION_UA,
				 msgcnt/2, msgcnt/2,
				 NULL, 100, &produced);

	test_wait_delivery(rk, &produced);

	rd_kafka_topic_destroy(rkt);

	TIMING_START(&t_destroy, "rd_kafka_destroy()");
	rd_kafka_destroy(rk);
	TIMING_STOP(&t_destroy);
}

int main_0044_partition_cnt (int argc, char **argv) {
	if (!test_can_create_topics(1))
		return 0;

	test_producer_partition_cnt_change();

        return 0;
}