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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,165 @@ | ||
| /* | ||
| * librdkafka - Apache Kafka C library | ||
| * | ||
| * Copyright (c) 2020, 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 <iostream> | ||
| #include <map> | ||
| #include <cstring> | ||
| #include <cstdlib> | ||
| #include "testcpp.h" | ||
| extern "C" { | ||
| #include "test.h" | ||
| } | ||
|
|
||
| /** | ||
| * Test consumer fetch.queue.backoff.ms behaviour. | ||
| * | ||
| * @param backoff_ms Backoff ms to configure, -1 to rely on default one. | ||
| * | ||
| * 1. Produce N messages, 1 message per batch. | ||
| * 2. Configure consumer with queued.min.messages=1 and | ||
| * fetch.queue.backoff.ms=<backoff_ms> | ||
| * 3. Verify that the consume() latency is <= fetch.queue.backoff.ms. | ||
| */ | ||
|
|
||
|
|
||
| static void do_test_queue_backoff(const std::string &topic, int backoff_ms) { | ||
| SUB_TEST("backoff_ms = %d", backoff_ms); | ||
|
|
||
| /* Create consumer */ | ||
| RdKafka::Conf *conf; | ||
| Test::conf_init(&conf, NULL, 60); | ||
| Test::conf_set(conf, "group.id", topic); | ||
| Test::conf_set(conf, "enable.auto.commit", "false"); | ||
| Test::conf_set(conf, "auto.offset.reset", "beginning"); | ||
| Test::conf_set(conf, "queued.min.messages", "1"); | ||
| if (backoff_ms >= 0) { | ||
| Test::conf_set(conf, "fetch.queue.backoff.ms", tostr() << backoff_ms); | ||
| } | ||
| /* Make sure to include only one message in each fetch. | ||
| * Message size is 10000. */ | ||
| Test::conf_set(conf, "fetch.message.max.bytes", "12000"); | ||
|
|
||
| if (backoff_ms < 0) | ||
| /* default */ | ||
| backoff_ms = 1000; | ||
|
|
||
| std::string errstr; | ||
|
|
||
| RdKafka::KafkaConsumer *c = RdKafka::KafkaConsumer::create(conf, errstr); | ||
| if (!c) | ||
| Test::Fail("Failed to create KafkaConsumer: " + errstr); | ||
| delete conf; | ||
|
|
||
| RdKafka::TopicPartition *rktpar = RdKafka::TopicPartition::create(topic, 0); | ||
| std::vector<RdKafka::TopicPartition *> parts; | ||
| parts.push_back(rktpar); | ||
|
|
||
| RdKafka::ErrorCode err; | ||
| if ((err = c->assign(parts))) | ||
| Test::Fail("assigned failed: " + RdKafka::err2str(err)); | ||
| RdKafka::TopicPartition::destroy(parts); | ||
|
|
||
| int received = 0; | ||
| int in_profile_cnt = 0; | ||
| int dmax = | ||
| (int)((double)backoff_ms * (test_timeout_multiplier > 1 ? 1.5 : 1.2)); | ||
| if (backoff_ms < 15) | ||
| dmax = 15; | ||
|
|
||
| int64_t ts_consume = test_clock(); | ||
|
|
||
| while (received < 5) { | ||
| /* Wait more than dmax to count out of profile messages. | ||
| * Different for first message, that is skipped. */ | ||
| int consume_timeout = | ||
| received == 0 ? 500 * test_timeout_multiplier : dmax * 2; | ||
| RdKafka::Message *msg = c->consume(consume_timeout); | ||
|
|
||
| rd_ts_t now = test_clock(); | ||
| int latency = (test_clock() - ts_consume) / 1000; | ||
| ts_consume = now; | ||
| bool in_profile = latency <= dmax; | ||
|
|
||
| if (!msg) | ||
| Test::Fail(tostr() << "No message for " << consume_timeout << "ms"); | ||
| if (msg->err()) | ||
| Test::Fail("Unexpected consumer error: " + msg->errstr()); | ||
|
|
||
| Test::Say(tostr() << "Message #" << received << " consumed in " << latency | ||
| << "ms (expecting <= " << dmax << "ms)" | ||
| << (received == 0 ? ": skipping first" : "") | ||
| << (in_profile ? ": in profile" : ": OUT OF PROFILE") | ||
| << "\n"); | ||
|
|
||
| if (received++ > 0 && in_profile) | ||
| in_profile_cnt++; | ||
|
|
||
| delete msg; | ||
| } | ||
|
|
||
| Test::Say(tostr() << in_profile_cnt << "/" << received << " messages were " | ||
| << "in profile (<= " << dmax | ||
| << ") for backoff_ms=" << backoff_ms << "\n"); | ||
|
|
||
| /* first message isn't counted*/ | ||
| const int expected_in_profile = received - 1; | ||
| TEST_ASSERT(expected_in_profile - in_profile_cnt == 0, | ||
| "Only %d/%d messages were in profile", in_profile_cnt, | ||
| expected_in_profile); | ||
|
|
||
| delete c; | ||
|
|
||
| SUB_TEST_PASS(); | ||
| } | ||
|
|
||
|
|
||
| extern "C" { | ||
| int main_0127_fetch_queue_backoff(int argc, char **argv) { | ||
| std::string topic = Test::mk_topic_name("0127_fetch_queue_backoff", 1); | ||
|
|
||
| /* Prime the topic with messages. */ | ||
| RdKafka::Conf *conf; | ||
| Test::conf_init(&conf, NULL, 10); | ||
| Test::conf_set(conf, "batch.num.messages", "1"); | ||
| std::string errstr; | ||
| RdKafka::Producer *p = RdKafka::Producer::create(conf, errstr); | ||
| if (!p) | ||
| Test::Fail(tostr() << __FUNCTION__ | ||
| << ": Failed to create producer: " << errstr); | ||
| delete conf; | ||
|
|
||
| Test::produce_msgs(p, topic, 0, 100, 10000, true /*flush*/); | ||
| delete p; | ||
|
|
||
| do_test_queue_backoff(topic, -1); | ||
| do_test_queue_backoff(topic, 500); | ||
| do_test_queue_backoff(topic, 10); | ||
| do_test_queue_backoff(topic, 0); | ||
| return 0; | ||
| } | ||
| } |
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