/* * librdkafka - Apache Kafka C library * * Copyright (c) 2018-2022, 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" #include /** * @name Idempotent Producer tests * */ static struct { int batch_cnt; int initial_fail_batch_cnt; rd_atomic32_t produce_cnt; } state; /** * @brief This is called prior to parsing the ProduceResponse, * we use it to inject errors. * * @locality an internal rdkafka thread */ static rd_kafka_resp_err_t handle_ProduceResponse(rd_kafka_t *rk, int32_t brokerid, uint64_t msgseq, rd_kafka_resp_err_t err) { rd_kafka_resp_err_t new_err = err; int n; if (err == RD_KAFKA_RESP_ERR__RETRY) return err; /* Skip internal retries, such as triggered by * rd_kafka_broker_bufq_purge_by_toppar() */ n = rd_atomic32_add(&state.produce_cnt, 1); /* Let the first N ProduceRequests fail with request timeout. * Do allow the first request through. */ if (n > 1 && n <= state.initial_fail_batch_cnt) { if (err) TEST_WARN( "First %d ProduceRequests should not " "have failed, this is #%d with error %s for " "brokerid %" PRId32 " and msgseq %" PRIu64 "\n", state.initial_fail_batch_cnt, n, rd_kafka_err2name(err), brokerid, msgseq); assert(!err && *"First N ProduceRequests should not have failed"); new_err = RD_KAFKA_RESP_ERR__TIMED_OUT; } TEST_SAY("handle_ProduceResponse(broker %" PRId32 ", MsgSeq %" PRId64 ", Error %s) -> new Error %s\n", brokerid, msgseq, rd_kafka_err2name(err), rd_kafka_err2name(new_err)); return new_err; } /** * @brief Test handling of implicit acks. * * @param batch_cnt Total number of batches, ProduceRequests, sent. * @param initial_fail_batch_cnt How many of the initial batches should * fail with an emulated network timeout. */ static void do_test_implicit_ack(const char *what, int batch_cnt, int initial_fail_batch_cnt) { rd_kafka_t *rk; const char *topic = test_mk_topic_name("0090_idempotence_impl_ack", 1); const int32_t partition = 0; uint64_t testid; int msgcnt = 10 * batch_cnt; rd_kafka_conf_t *conf; rd_kafka_topic_t *rkt; test_msgver_t mv; TEST_SAY(_C_MAG "[ Test implicit ack: %s ]\n", what); rd_atomic32_init(&state.produce_cnt, 0); state.batch_cnt = batch_cnt; state.initial_fail_batch_cnt = initial_fail_batch_cnt; testid = test_id_generate(); test_conf_init(&conf, NULL, 60); rd_kafka_conf_set_dr_msg_cb(conf, test_dr_msg_cb); test_conf_set(conf, "enable.idempotence", "true"); test_conf_set(conf, "batch.num.messages", "10"); test_conf_set(conf, "linger.ms", "500"); test_conf_set(conf, "retry.backoff.ms", "10"); /* The ProduceResponse handler will inject timed-out-in-flight * errors for the first N ProduceRequests, which will trigger retries * that in turn will result in OutOfSequence errors. */ test_conf_set(conf, "ut_handle_ProduceResponse", (char *)handle_ProduceResponse); rk = test_create_handle(RD_KAFKA_PRODUCER, conf); test_create_topic(rk, topic, 1, 1); rkt = test_create_producer_topic(rk, topic, NULL); TEST_SAY("Producing %d messages\n", msgcnt); test_produce_msgs(rk, rkt, testid, -1, 0, msgcnt, NULL, 0); TEST_SAY("Flushing..\n"); rd_kafka_flush(rk, 10000); rd_kafka_topic_destroy(rkt); rd_kafka_destroy(rk); TEST_SAY("Verifying messages with consumer\n"); test_msgver_init(&mv, testid); test_consume_msgs_easy_mv(NULL, topic, partition, testid, 1, msgcnt, NULL, &mv); test_msgver_verify("verify", &mv, TEST_MSGVER_ALL, 0, msgcnt); test_msgver_clear(&mv); TEST_SAY(_C_GRN "[ Test implicit ack: %s : PASS ]\n", what); } int main_0090_idempotence(int argc, char **argv) { /* The broker maintains a window of the N last ProduceRequests * per partition and producer to allow ProduceRequest retries * for previously successful requests to return a non-error response. * This limit is currently (AK 2.0) hard coded at 5. */ const int broker_req_window = 5; do_test_implicit_ack("within broker request window", broker_req_window * 2, broker_req_window); do_test_implicit_ack("outside broker request window", broker_req_window + 3, broker_req_window + 3); return 0; }