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/*
* 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"
/**
* Test consumer allow.auto.create.topics by subscribing to a mix
* of available, unauthorized and non-existent topics.
*
* The same test is run with and without allow.auto.create.topics
* and with and without wildcard subscribes.
*
*/
static void do_test_consumer(bool allow_auto_create_topics,
bool with_wildcards) {
Test::Say(tostr() << _C_MAG << "[ Test allow.auto.create.topics="
<< (allow_auto_create_topics ? "true" : "false")
<< " with_wildcards=" << (with_wildcards ? "true" : "false")
<< " ]\n");
bool has_acl_cli = test_broker_version >= TEST_BRKVER(2, 1, 0, 0) &&
!test_needs_auth(); /* We can't bother passing Java
* security config to kafka-acls.sh */
bool supports_allow = test_broker_version >= TEST_BRKVER(0, 11, 0, 0);
std::string topic_exists = Test::mk_topic_name("0109-exists", 1);
std::string topic_notexists = Test::mk_topic_name("0109-notexists", 1);
std::string topic_unauth = Test::mk_topic_name("0109-unauthorized", 1);
/* Create consumer */
RdKafka::Conf *conf;
Test::conf_init(&conf, NULL, 20);
Test::conf_set(conf, "group.id", topic_exists);
Test::conf_set(conf, "enable.partition.eof", "true");
/* Quickly refresh metadata on topic auto-creation since the first
* metadata after auto-create hides the topic due to 0 partition count. */
Test::conf_set(conf, "topic.metadata.refresh.interval.ms", "1000");
if (allow_auto_create_topics)
Test::conf_set(conf, "allow.auto.create.topics", "true");
std::string bootstraps;
if (conf->get("bootstrap.servers", bootstraps) != RdKafka::Conf::CONF_OK)
Test::Fail("Failed to retrieve bootstrap.servers");
std::string errstr;
RdKafka::KafkaConsumer *c = RdKafka::KafkaConsumer::create(conf, errstr);
if (!c)
Test::Fail("Failed to create KafkaConsumer: " + errstr);
delete conf;
/* Create topics */
Test::create_topic(c, topic_exists.c_str(), 1, 1);
if (has_acl_cli) {
Test::create_topic(c, topic_unauth.c_str(), 1, 1);
/* Add denying ACL for unauth topic */
test_kafka_cmd(
"kafka-acls.sh --bootstrap-server %s "
"--add --deny-principal 'User:*' "
"--operation All --deny-host '*' "
"--topic '%s'",
bootstraps.c_str(), topic_unauth.c_str());
}
/* Wait for topic to be fully created */
test_wait_topic_exists(NULL, topic_exists.c_str(), 10 * 1000);
/*
* Subscribe
*/
std::vector<std::string> topics;
std::map<std::string, RdKafka::ErrorCode> exp_errors;
topics.push_back(topic_notexists);
if (has_acl_cli)
topics.push_back(topic_unauth);
if (with_wildcards) {
topics.push_back("^" + topic_exists);
topics.push_back("^" + topic_notexists);
/* If the subscription contains at least one wildcard/regex
* then no auto topic creation will take place (since the consumer
* requests all topics in metadata, and not specific ones, thus
* not triggering topic auto creation).
* We need to handle the expected error cases accordingly. */
exp_errors["^" + topic_notexists] = RdKafka::ERR_UNKNOWN_TOPIC_OR_PART;
exp_errors[topic_notexists] = RdKafka::ERR_UNKNOWN_TOPIC_OR_PART;
if (has_acl_cli) {
/* Unauthorized topics are not included in list-all-topics Metadata,
* which we use for wildcards, so in this case the error code for
* unauthorixed topics show up as unknown topic. */
exp_errors[topic_unauth] = RdKafka::ERR_UNKNOWN_TOPIC_OR_PART;
}
} else {
topics.push_back(topic_exists);
if (has_acl_cli)
exp_errors[topic_unauth] = RdKafka::ERR_TOPIC_AUTHORIZATION_FAILED;
}
if (supports_allow && !allow_auto_create_topics)
exp_errors[topic_notexists] = RdKafka::ERR_UNKNOWN_TOPIC_OR_PART;
RdKafka::ErrorCode err;
if ((err = c->subscribe(topics)))
Test::Fail("subscribe failed: " + RdKafka::err2str(err));
/* Start consuming until EOF is reached, which indicates that we have an
* assignment and any errors should have been reported. */
bool run = true;
while (run) {
RdKafka::Message *msg = c->consume(tmout_multip(1000));
switch (msg->err()) {
case RdKafka::ERR__TIMED_OUT:
case RdKafka::ERR_NO_ERROR:
break;
case RdKafka::ERR__PARTITION_EOF:
run = false;
break;
default:
Test::Say("Consume error on " + msg->topic_name() + ": " + msg->errstr() +
"\n");
std::map<std::string, RdKafka::ErrorCode>::iterator it =
exp_errors.find(msg->topic_name());
/* Temporary unknown-topic errors are okay for auto-created topics. */
bool unknown_is_ok = allow_auto_create_topics && !with_wildcards &&
msg->err() == RdKafka::ERR_UNKNOWN_TOPIC_OR_PART &&
msg->topic_name() == topic_notexists;
if (it == exp_errors.end()) {
if (unknown_is_ok)
Test::Say("Ignoring temporary auto-create error for topic " +
msg->topic_name() + ": " + RdKafka::err2str(msg->err()) +
"\n");
else
Test::Fail("Did not expect error for " + msg->topic_name() +
": got: " + RdKafka::err2str(msg->err()));
} else if (msg->err() != it->second) {
if (unknown_is_ok)
Test::Say("Ignoring temporary auto-create error for topic " +
msg->topic_name() + ": " + RdKafka::err2str(msg->err()) +
"\n");
else
Test::Fail("Expected '" + RdKafka::err2str(it->second) + "' for " +
msg->topic_name() + ", got " +
RdKafka::err2str(msg->err()));
} else {
exp_errors.erase(msg->topic_name());
}
break;
}
delete msg;
}
/* Fail if not all expected errors were seen. */
if (!exp_errors.empty())
Test::Fail(tostr() << "Expecting " << exp_errors.size() << " more errors");
c->close();
delete c;
}
extern "C" {
int main_0109_auto_create_topics(int argc, char **argv) {
/* Parameters:
* allow auto create, with wildcards */
do_test_consumer(true, true);
do_test_consumer(true, false);
do_test_consumer(false, true);
do_test_consumer(false, false);
return 0;
}
}
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