/*
 * librdkafka - Apache Kafka C library
 *
 * Copyright (c) 2012-2013, 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.
 */

/**
 * Tests event API.
 */


#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 */


static int msgid_next = 0;
static int fails      = 0;

/**
 * Handle delivery reports
 */
static void handle_drs(rd_kafka_event_t *rkev) {
        const rd_kafka_message_t *rkmessage;

        while ((rkmessage = rd_kafka_event_message_next(rkev))) {
                int32_t broker_id = rd_kafka_message_broker_id(rkmessage);
                int msgid         = *(int *)rkmessage->_private;
                free(rkmessage->_private);

                TEST_SAYL(3,
                          "Got rkmessage %s [%" PRId32 "] @ %" PRId64
                          ": "
                          "from broker %" PRId32 ": %s\n",
                          rd_kafka_topic_name(rkmessage->rkt),
                          rkmessage->partition, rkmessage->offset, broker_id,
                          rd_kafka_err2str(rkmessage->err));


                if (rkmessage->err != RD_KAFKA_RESP_ERR_NO_ERROR)
                        TEST_FAIL("Message delivery failed: %s\n",
                                  rd_kafka_err2str(rkmessage->err));

                if (msgid != msgid_next) {
                        fails++;
                        TEST_FAIL("Delivered msg %i, expected %i\n", msgid,
                                  msgid_next);
                        return;
                }

                TEST_ASSERT(broker_id >= 0, "Message %d has no broker id set",
                            msgid);

                msgid_next = msgid + 1;
        }
}


/**
 * @brief Test delivery report events
 */
int main_0039_event_dr(int argc, char **argv) {
        int partition = 0;
        int r;
        rd_kafka_t *rk;
        rd_kafka_topic_t *rkt;
        rd_kafka_conf_t *conf;
        rd_kafka_topic_conf_t *topic_conf;
        char msg[128];
        int msgcnt = test_quick ? 500 : 50000;
        int i;
        test_timing_t t_produce, t_delivery;
        rd_kafka_queue_t *eventq;

        test_conf_init(&conf, &topic_conf, 10);

        /* Set delivery report callback */
        rd_kafka_conf_set_dr_msg_cb(conf, test_dr_msg_cb);

        rd_kafka_conf_set_events(conf, RD_KAFKA_EVENT_DR);

        /* Create kafka instance */
        rk = test_create_handle(RD_KAFKA_PRODUCER, conf);

        eventq = rd_kafka_queue_get_main(rk);

        rkt = rd_kafka_topic_new(rk, test_mk_topic_name("0005", 0), topic_conf);
        if (!rkt)
                TEST_FAIL("Failed to create topic: %s\n", rd_strerror(errno));

        /* Produce messages */
        TIMING_START(&t_produce, "PRODUCE");
        for (i = 0; i < msgcnt; i++) {
                int *msgidp = malloc(sizeof(*msgidp));
                *msgidp     = i;
                rd_snprintf(msg, sizeof(msg), "%s test message #%i", argv[0],
                            i);
                r = rd_kafka_produce(rkt, partition, RD_KAFKA_MSG_F_COPY, msg,
                                     strlen(msg), NULL, 0, msgidp);
                if (r == -1)
                        TEST_FAIL("Failed to produce message #%i: %s\n", i,
                                  rd_strerror(errno));
        }
        TIMING_STOP(&t_produce);
        TEST_SAY("Produced %i messages, waiting for deliveries\n", msgcnt);

        /* Wait for messages to be delivered */
        TIMING_START(&t_delivery, "DELIVERY");
        while (rd_kafka_outq_len(rk) > 0) {
                rd_kafka_event_t *rkev;
                rkev = rd_kafka_queue_poll(eventq, 1000);
                switch (rd_kafka_event_type(rkev)) {
                case RD_KAFKA_EVENT_DR:
                        TEST_SAYL(3, "%s event with %" PRIusz " messages\n",
                                  rd_kafka_event_name(rkev),
                                  rd_kafka_event_message_count(rkev));
                        handle_drs(rkev);
                        break;
                default:
                        TEST_SAY("Unhandled event: %s\n",
                                 rd_kafka_event_name(rkev));
                        break;
                }
                rd_kafka_event_destroy(rkev);
        }
        TIMING_STOP(&t_delivery);

        if (fails)
                TEST_FAIL("%i failures, see previous errors", fails);

        if (msgid_next != msgcnt)
                TEST_FAIL("Still waiting for messages: next %i != end %i\n",
                          msgid_next, msgcnt);

        rd_kafka_queue_destroy(eventq);

        /* Destroy topic */
        rd_kafka_topic_destroy(rkt);

        /* Destroy rdkafka instance */
        TEST_SAY("Destroying kafka instance %s\n", rd_kafka_name(rk));
        rd_kafka_destroy(rk);

        return 0;
}

/**
 * @brief Local test: test log events
 */
int main_0039_event_log(int argc, char **argv) {
        rd_kafka_t *rk;
        rd_kafka_conf_t *conf;
        rd_kafka_queue_t *eventq;
        int waitevent = 1;

        const char *fac;
        const char *msg;
        char ctx[60];
        int level;

        conf = rd_kafka_conf_new();
        rd_kafka_conf_set(conf, "bootstrap.servers", "0:65534", NULL, 0);
        rd_kafka_conf_set(conf, "log.queue", "true", NULL, 0);
        rd_kafka_conf_set(conf, "debug", "all", NULL, 0);

        /* Create kafka instance */
        rk     = test_create_handle(RD_KAFKA_PRODUCER, conf);
        eventq = rd_kafka_queue_get_main(rk);
        TEST_CALL_ERR__(rd_kafka_set_log_queue(rk, eventq));

        while (waitevent) {
                /* reset ctx */
                memset(ctx, '$', sizeof(ctx) - 2);
                ctx[sizeof(ctx) - 1] = '\0';

                rd_kafka_event_t *rkev;
                rkev = rd_kafka_queue_poll(eventq, 1000);
                switch (rd_kafka_event_type(rkev)) {
                case RD_KAFKA_EVENT_LOG:
                        rd_kafka_event_log(rkev, &fac, &msg, &level);
                        rd_kafka_event_debug_contexts(rkev, ctx, sizeof(ctx));
                        TEST_SAY(
                            "Got log  event: "
                            "level: %d ctx: %s fac: %s: msg: %s\n",
                            level, ctx, fac, msg);
                        if (strchr(ctx, '$')) {
                                TEST_FAIL(
                                    "ctx was not set by "
                                    "rd_kafka_event_debug_contexts()");
                        }
                        waitevent = 0;
                        break;
                default:
                        TEST_SAY("Unhandled event: %s\n",
                                 rd_kafka_event_name(rkev));
                        break;
                }
                rd_kafka_event_destroy(rkev);
        }

        /* Destroy rdkafka instance */
        rd_kafka_queue_destroy(eventq);
        TEST_SAY("Destroying kafka instance %s\n", rd_kafka_name(rk));
        rd_kafka_destroy(rk);

        return 0;
}

/**
 * @brief Local test: test event generation
 */
int main_0039_event(int argc, char **argv) {
        rd_kafka_t *rk;
        rd_kafka_conf_t *conf;
        rd_kafka_queue_t *eventq;
        int waitevent = 1;

        /* Set up a config with ERROR events enabled and
         * configure an invalid broker so that _TRANSPORT or ALL_BROKERS_DOWN
         * is promptly generated. */

        conf = rd_kafka_conf_new();

        rd_kafka_conf_set_events(conf, RD_KAFKA_EVENT_ERROR);
        rd_kafka_conf_set(conf, "bootstrap.servers", "0:65534", NULL, 0);

        /* Create kafka instance */
        rk = test_create_handle(RD_KAFKA_PRODUCER, conf);

        eventq = rd_kafka_queue_get_main(rk);

        while (waitevent) {
                rd_kafka_event_t *rkev;
                rkev = rd_kafka_queue_poll(eventq, 1000);
                switch (rd_kafka_event_type(rkev)) {
                case RD_KAFKA_EVENT_ERROR:
                        TEST_SAY("Got %s%s event: %s: %s\n",
                                 rd_kafka_event_error_is_fatal(rkev) ? "FATAL "
                                                                     : "",
                                 rd_kafka_event_name(rkev),
                                 rd_kafka_err2name(rd_kafka_event_error(rkev)),
                                 rd_kafka_event_error_string(rkev));
                        waitevent = 0;
                        break;
                default:
                        TEST_SAY("Unhandled event: %s\n",
                                 rd_kafka_event_name(rkev));
                        break;
                }
                rd_kafka_event_destroy(rkev);
        }

        rd_kafka_queue_destroy(eventq);

        /* Destroy rdkafka instance */
        TEST_SAY("Destroying kafka instance %s\n", rd_kafka_name(rk));
        rd_kafka_destroy(rk);

        return 0;
}
