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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2012-2015, 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"
/**
* Tests that rdkafka's internal timers behave.
*/
struct state {
int calls;
int64_t ts_last;
int interval;
int fails;
};
struct state state;
static int stats_cb(rd_kafka_t *rk, char *json, size_t json_len, void *opaque) {
const int64_t now = test_clock();
/* Fake the first elapsed time since we dont really know how
* long rd_kafka_new() takes and at what time the timer is started. */
const int64_t elapsed =
state.ts_last ? now - state.ts_last : state.interval;
const int64_t overshoot = elapsed - state.interval;
const int wiggleroom_up =
(int)((double)state.interval *
(!strcmp(test_mode, "bare") ? 0.2 : 1.0));
const int wiggleroom_down = (int)((double)state.interval * 0.1);
TEST_SAY("Call #%d: after %" PRId64
"ms, %.0f%% outside "
"interval %" PRId64 " >-%d <+%d\n",
state.calls, elapsed / 1000,
((double)overshoot / state.interval) * 100.0,
(int64_t)state.interval / 1000, wiggleroom_down / 1000,
wiggleroom_up / 1000);
if (overshoot < -wiggleroom_down || overshoot > wiggleroom_up) {
TEST_WARN("^ outside range\n");
state.fails++;
}
state.ts_last = now;
state.calls++;
return 0;
}
/**
* Enable statistics with a set interval, make sure the stats callbacks are
* called within reasonable intervals.
*/
static void do_test_stats_timer(void) {
rd_kafka_t *rk;
rd_kafka_conf_t *conf;
const int exp_calls = 10;
test_timing_t t_new;
memset(&state, 0, sizeof(state));
state.interval = 600 * 1000;
test_conf_init(&conf, NULL, 200);
test_conf_set(conf, "statistics.interval.ms", "600");
test_conf_set(conf, "bootstrap.servers", NULL); /*no need for brokers*/
rd_kafka_conf_set_stats_cb(conf, stats_cb);
TIMING_START(&t_new, "rd_kafka_new()");
rk = test_create_handle(RD_KAFKA_CONSUMER, conf);
TIMING_STOP(&t_new);
TEST_SAY(
"Starting wait loop for %d expected stats_cb calls "
"with an interval of %dms\n",
exp_calls, state.interval / 1000);
while (state.calls < exp_calls) {
test_timing_t t_poll;
TIMING_START(&t_poll, "rd_kafka_poll()");
rd_kafka_poll(rk, 100);
TIMING_STOP(&t_poll);
if (TIMING_DURATION(&t_poll) > 150 * 1000)
TEST_WARN(
"rd_kafka_poll(rk,100) "
"took more than 50%% extra\n");
}
rd_kafka_destroy(rk);
if (state.calls > exp_calls)
TEST_SAY("Got more calls than expected: %d > %d\n", state.calls,
exp_calls);
if (state.fails) {
/* We can't rely on CIs giving our test job enough CPU to finish
* in time, so don't error out even if the time is outside
* the window */
if (test_on_ci)
TEST_WARN("%d/%d intervals failed\n", state.fails,
state.calls);
else
TEST_FAIL("%d/%d intervals failed\n", state.fails,
state.calls);
} else
TEST_SAY("All %d intervals okay\n", state.calls);
}
int main_0025_timers(int argc, char **argv) {
do_test_stats_timer();
return 0;
}
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