/*

 * 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 */

/**

 * #781: handle many (?) topics.

 */

const int msgs_per_topic = 100;

/**

 * Request offset for nonexisting partition.

 * Will cause rd_kafka_destroy() to hang.

 */

static void produce_many (char **topics, int topic_cnt, uint64_t testid) {

	rd_kafka_t *rk;

        test_timing_t t_rkt_create;

        int i;

	rd_kafka_topic_t **rkts;

	TEST_SAY(_C_MAG "%s\n" _C_CLR, __FUNCTION__);

	rk = test_create_producer();

	TEST_SAY("Creating %d topic objects\n", topic_cnt);

	rkts = malloc(sizeof(*rkts) * topic_cnt);

	TIMING_START(&t_rkt_create, "Topic object create");

	for (i = 0 ; i < topic_cnt ; i++) {

		rkts[i] = test_create_topic_object(rk, topics[i],

                                                   "acks", "all", NULL);

	}

	TIMING_STOP(&t_rkt_create);

	TEST_SAY("Producing %d messages to each %d topics\n",

		 msgs_per_topic, topic_cnt);

        /* Produce messages to each topic (so they are created) */

	for (i = 0 ; i < topic_cnt ; i++) {

		test_produce_msgs(rk, rkts[i], testid, 0,

				  i * msgs_per_topic, msgs_per_topic,

				  NULL, 100);

	}

	TEST_SAY("Destroying %d topic objects\n", topic_cnt);

	for (i = 0 ; i < topic_cnt ; i++) {

		rd_kafka_topic_destroy(rkts[i]);

	}

	free(rkts);

	test_flush(rk, 30000);

	rd_kafka_destroy(rk);

}

static void legacy_consume_many (char **topics, int topic_cnt, uint64_t testid){

	rd_kafka_t *rk;

        test_timing_t t_rkt_create;

        int i;

	rd_kafka_topic_t **rkts;

	int msg_base = 0;

	TEST_SAY(_C_MAG "%s\n" _C_CLR, __FUNCTION__);

	test_conf_init(NULL, NULL, 60);

	rk = test_create_consumer(NULL, NULL, NULL, NULL);

	TEST_SAY("Creating %d topic objects\n", topic_cnt);

	rkts = malloc(sizeof(*rkts) * topic_cnt);

	TIMING_START(&t_rkt_create, "Topic object create");

	for (i = 0 ; i < topic_cnt ; i++)

		rkts[i] = test_create_topic_object(rk, topics[i], NULL);

	TIMING_STOP(&t_rkt_create);

	TEST_SAY("Start consumer for %d topics\n", topic_cnt);

	for (i = 0 ; i < topic_cnt ; i++)

		test_consumer_start("legacy", rkts[i], 0,

				    RD_KAFKA_OFFSET_BEGINNING);

	TEST_SAY("Consuming from %d messages from each %d topics\n",

		 msgs_per_topic, topic_cnt);

	for (i = 0 ; i < topic_cnt ; i++) {

		test_consume_msgs("legacy", rkts[i], testid, 0, TEST_NO_SEEK,

				  msg_base, msgs_per_topic, 1);

		msg_base += msgs_per_topic;

	}

	TEST_SAY("Stopping consumers\n");

	for (i = 0 ; i < topic_cnt ; i++)

		test_consumer_stop("legacy", rkts[i], 0);

	TEST_SAY("Destroying %d topic objects\n", topic_cnt);

	for (i = 0 ; i < topic_cnt ; i++)

		rd_kafka_topic_destroy(rkts[i]);

	free(rkts);

	rd_kafka_destroy(rk);

}

static void subscribe_consume_many (char **topics, int topic_cnt,

				    uint64_t testid) {

	rd_kafka_t *rk;

        int i;

	rd_kafka_topic_conf_t *tconf;

	rd_kafka_topic_partition_list_t *parts;

	rd_kafka_resp_err_t err;

	test_msgver_t mv;

	TEST_SAY(_C_MAG "%s\n" _C_CLR, __FUNCTION__);

	test_conf_init(NULL, &tconf, 60);

	test_topic_conf_set(tconf, "auto.offset.reset", "earliest");

	rk = test_create_consumer(__FUNCTION__, NULL, NULL, tconf);

	parts = rd_kafka_topic_partition_list_new(topic_cnt);

	for (i = 0 ; i < topic_cnt ; i++)

		rd_kafka_topic_partition_list_add(parts, topics[i],

						  RD_KAFKA_PARTITION_UA);

	TEST_SAY("Subscribing to %d topics\n", topic_cnt);

	err = rd_kafka_subscribe(rk, parts);

	if (err)

		TEST_FAIL("subscribe() failed: %s\n", rd_kafka_err2str(err));

	rd_kafka_topic_partition_list_destroy(parts);

	test_msgver_init(&mv, testid);

	test_consumer_poll("consume.subscribe", rk, testid,

			   -1, 0, msgs_per_topic * topic_cnt, &mv;;

	for (i = 0 ; i < topic_cnt ; i++)

		test_msgver_verify_part("subscribe", &mv, TEST_MSGVER_ALL_PART,

					topics[i], 0, i * msgs_per_topic,

					msgs_per_topic);

	test_msgver_clear(&mv;;

	test_consumer_close(rk);

	rd_kafka_destroy(rk);

}

static void assign_consume_many (char **topics, int topic_cnt, uint64_t testid){

	rd_kafka_t *rk;

	rd_kafka_topic_partition_list_t *parts;

	int i;

	test_msgver_t mv;

	TEST_SAY(_C_MAG "%s\n" _C_CLR, __FUNCTION__);

	test_conf_init(NULL, NULL, 60);

	rk = test_create_consumer(__FUNCTION__, NULL, NULL, NULL);

	parts = rd_kafka_topic_partition_list_new(topic_cnt);

	for (i = 0 ; i < topic_cnt ; i++)

		rd_kafka_topic_partition_list_add(parts, topics[i], 0)->

			offset = RD_KAFKA_OFFSET_TAIL(msgs_per_topic);

	test_consumer_assign("consume.assign", rk, parts);

	rd_kafka_topic_partition_list_destroy(parts);

	test_msgver_init(&mv, testid);

	test_consumer_poll("consume.assign", rk, testid,

			   -1, 0, msgs_per_topic * topic_cnt, &mv;;

	for (i = 0 ; i < topic_cnt ; i++)

		test_msgver_verify_part("assign", &mv, TEST_MSGVER_ALL_PART,

					topics[i], 0, i * msgs_per_topic,

					msgs_per_topic);

	test_msgver_clear(&mv;;

	test_consumer_close(rk);

	rd_kafka_destroy(rk);

}

int main_0042_many_topics (int argc, char **argv) {

	char **topics;

	const int topic_cnt = 20; /* up this as needed, topic creation

				   * takes time so unless hunting a bug

				   * we keep this low to keep the

				   * test suite run time down. */

	uint64_t testid;

	int i;

	test_conf_init(NULL, NULL, 60);

	testid = test_id_generate();

	/* Generate unique topic names */

	topics = malloc(sizeof(*topics) * topic_cnt);

	for (i = 0 ; i < topic_cnt ; i++)

		topics[i] = rd_strdup(test_mk_topic_name(__FUNCTION__, 1));

	produce_many(topics, topic_cnt, testid);

	legacy_consume_many(topics, topic_cnt, testid);

	if (test_broker_version >= TEST_BRKVER(0,9,0,0)) {

		subscribe_consume_many(topics, topic_cnt, testid);

		assign_consume_many(topics, topic_cnt, testid);

	}

	for (i = 0 ; i < topic_cnt ; i++)

		free(topics[i]);

	free(topics);

        return 0;

}