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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 "test.h"
#include "../src/rdkafka_proto.h"
/**
* @name Verify that the high-level consumer times out itself if
* heartbeats are not successful (issue #2631).
*/
static const char *commit_type;
static int rebalance_cnt;
static rd_kafka_resp_err_t rebalance_exp_event;
static rd_kafka_resp_err_t commit_exp_err;
static void rebalance_cb(rd_kafka_t *rk,
rd_kafka_resp_err_t err,
rd_kafka_topic_partition_list_t *parts,
void *opaque) {
rebalance_cnt++;
TEST_SAY("Rebalance #%d: %s: %d partition(s)\n", rebalance_cnt,
rd_kafka_err2name(err), parts->cnt);
TEST_ASSERT(
err == rebalance_exp_event, "Expected rebalance event %s, not %s",
rd_kafka_err2name(rebalance_exp_event), rd_kafka_err2name(err));
if (err == RD_KAFKA_RESP_ERR__ASSIGN_PARTITIONS) {
test_consumer_assign("assign", rk, parts);
} else {
rd_kafka_resp_err_t commit_err;
if (strcmp(commit_type, "auto")) {
rd_kafka_resp_err_t perr;
TEST_SAY("Performing %s commit\n", commit_type);
perr = rd_kafka_position(rk, parts);
TEST_ASSERT(!perr, "Failed to acquire position: %s",
rd_kafka_err2str(perr));
/* Sleep a short while so the broker times out the
* member too. */
rd_sleep(1);
commit_err = rd_kafka_commit(
rk, parts, !strcmp(commit_type, "async"));
if (!strcmp(commit_type, "async"))
TEST_ASSERT(!commit_err,
"Async commit should not fail, "
"but it returned %s",
rd_kafka_err2name(commit_err));
else
TEST_ASSERT(
commit_err == commit_exp_err ||
(!commit_exp_err &&
commit_err ==
RD_KAFKA_RESP_ERR__NO_OFFSET),
"Expected %s commit to return %s, "
"not %s",
commit_type,
rd_kafka_err2name(commit_exp_err),
rd_kafka_err2name(commit_err));
}
test_consumer_unassign("unassign", rk);
}
/* Make sure only one rebalance callback is served per poll()
* so that expect_rebalance() returns to the test logic on each
* rebalance. */
rd_kafka_yield(rk);
}
/**
* @brief Wait for an expected rebalance event, or fail.
*/
static void expect_rebalance(const char *what,
rd_kafka_t *c,
rd_kafka_resp_err_t exp_event,
int timeout_s) {
int64_t tmout = test_clock() + (timeout_s * 1000000);
int start_cnt = rebalance_cnt;
TEST_SAY("Waiting for %s (%s) for %ds\n", what,
rd_kafka_err2name(exp_event), timeout_s);
rebalance_exp_event = exp_event;
while (tmout > test_clock() && rebalance_cnt == start_cnt) {
if (test_consumer_poll_once(c, NULL, 1000))
rd_sleep(1);
}
if (rebalance_cnt == start_cnt + 1) {
rebalance_exp_event = RD_KAFKA_RESP_ERR_NO_ERROR;
return;
}
TEST_FAIL("Timed out waiting for %s (%s)\n", what,
rd_kafka_err2name(exp_event));
}
/**
* @brief Verify that session timeouts are handled by the consumer itself.
*
* @param use_commit_type "auto", "sync" (manual), "async" (manual)
*/
static void do_test_session_timeout(const char *use_commit_type) {
const char *bootstraps;
rd_kafka_mock_cluster_t *mcluster;
rd_kafka_conf_t *conf;
rd_kafka_t *c;
const char *groupid = "mygroup";
const char *topic = "test";
rebalance_cnt = 0;
commit_type = use_commit_type;
SUB_TEST0(!strcmp(use_commit_type, "sync") /*quick*/,
"Test session timeout with %s commit", use_commit_type);
mcluster = test_mock_cluster_new(3, &bootstraps);
rd_kafka_mock_coordinator_set(mcluster, "group", groupid, 1);
/* Seed the topic with messages */
test_produce_msgs_easy_v(topic, 0, 0, 0, 100, 10, "bootstrap.servers",
bootstraps, "batch.num.messages", "10", NULL);
test_conf_init(&conf, NULL, 30);
test_conf_set(conf, "bootstrap.servers", bootstraps);
test_conf_set(conf, "security.protocol", "PLAINTEXT");
test_conf_set(conf, "group.id", groupid);
test_conf_set(conf, "session.timeout.ms", "5000");
test_conf_set(conf, "heartbeat.interval.ms", "1000");
test_conf_set(conf, "auto.offset.reset", "earliest");
test_conf_set(conf, "enable.auto.commit",
!strcmp(commit_type, "auto") ? "true" : "false");
c = test_create_consumer(groupid, rebalance_cb, conf, NULL);
test_consumer_subscribe(c, topic);
/* Let Heartbeats fail after a couple of successful ones */
rd_kafka_mock_push_request_errors(
mcluster, RD_KAFKAP_Heartbeat, 9, RD_KAFKA_RESP_ERR_NO_ERROR,
RD_KAFKA_RESP_ERR_NO_ERROR, RD_KAFKA_RESP_ERR_NOT_COORDINATOR,
RD_KAFKA_RESP_ERR_NOT_COORDINATOR,
RD_KAFKA_RESP_ERR_NOT_COORDINATOR,
RD_KAFKA_RESP_ERR_NOT_COORDINATOR,
RD_KAFKA_RESP_ERR_NOT_COORDINATOR,
RD_KAFKA_RESP_ERR_NOT_COORDINATOR,
RD_KAFKA_RESP_ERR_NOT_COORDINATOR);
expect_rebalance("initial assignment", c,
RD_KAFKA_RESP_ERR__ASSIGN_PARTITIONS, 5 + 2);
/* Consume a couple of messages so that we have something to commit */
test_consumer_poll("consume", c, 0, -1, 0, 10, NULL);
/* The commit in the rebalance callback should fail when the
* member has timed out from the group. */
commit_exp_err = RD_KAFKA_RESP_ERR_UNKNOWN_MEMBER_ID;
expect_rebalance("session timeout revoke", c,
RD_KAFKA_RESP_ERR__REVOKE_PARTITIONS, 2 + 5 + 2);
expect_rebalance("second assignment", c,
RD_KAFKA_RESP_ERR__ASSIGN_PARTITIONS, 5 + 2);
/* Final rebalance in close().
* Its commit will work. */
rebalance_exp_event = RD_KAFKA_RESP_ERR__REVOKE_PARTITIONS;
commit_exp_err = RD_KAFKA_RESP_ERR_NO_ERROR;
test_consumer_close(c);
rd_kafka_destroy(c);
test_mock_cluster_destroy(mcluster);
SUB_TEST_PASS();
}
/**
* @brief Attempt manual commit when assignment has been lost (#3217)
*/
static void do_test_commit_on_lost(void) {
const char *bootstraps;
rd_kafka_mock_cluster_t *mcluster;
rd_kafka_conf_t *conf;
rd_kafka_t *c;
const char *groupid = "mygroup";
const char *topic = "test";
rd_kafka_resp_err_t err;
SUB_TEST();
test_curr->is_fatal_cb = test_error_is_not_fatal_cb;
mcluster = test_mock_cluster_new(3, &bootstraps);
rd_kafka_mock_coordinator_set(mcluster, "group", groupid, 1);
/* Seed the topic with messages */
test_produce_msgs_easy_v(topic, 0, 0, 0, 100, 10, "bootstrap.servers",
bootstraps, "batch.num.messages", "10", NULL);
test_conf_init(&conf, NULL, 30);
test_conf_set(conf, "bootstrap.servers", bootstraps);
test_conf_set(conf, "security.protocol", "PLAINTEXT");
test_conf_set(conf, "group.id", groupid);
test_conf_set(conf, "session.timeout.ms", "5000");
test_conf_set(conf, "heartbeat.interval.ms", "1000");
test_conf_set(conf, "auto.offset.reset", "earliest");
test_conf_set(conf, "enable.auto.commit", "false");
c = test_create_consumer(groupid, test_rebalance_cb, conf, NULL);
test_consumer_subscribe(c, topic);
/* Consume a couple of messages so that we have something to commit */
test_consumer_poll("consume", c, 0, -1, 0, 10, NULL);
/* Make the coordinator unreachable, this will cause a local session
* timeout followed by a revoke and assignment lost. */
rd_kafka_mock_broker_set_down(mcluster, 1);
/* Wait until the assignment is lost */
TEST_SAY("Waiting for assignment to be lost...\n");
while (!rd_kafka_assignment_lost(c))
rd_sleep(1);
TEST_SAY("Assignment is lost, committing\n");
/* Perform manual commit */
err = rd_kafka_commit(c, NULL, 0 /*sync*/);
TEST_SAY("commit() returned: %s\n", rd_kafka_err2name(err));
TEST_ASSERT(err, "expected commit to fail");
test_consumer_close(c);
rd_kafka_destroy(c);
test_mock_cluster_destroy(mcluster);
test_curr->is_fatal_cb = NULL;
SUB_TEST_PASS();
}
int main_0106_cgrp_sess_timeout(int argc, char **argv) {
if (test_needs_auth()) {
TEST_SKIP("Mock cluster does not support SSL/SASL\n");
return 0;
}
do_test_session_timeout("sync");
do_test_session_timeout("async");
do_test_session_timeout("auto");
do_test_commit_on_lost();
return 0;
}
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