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rdkafka_performance.c
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rdkafka_performance.c
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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2012-2022, Magnus Edenhill
* 2023, Confluent Inc.
* 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.
*/
/**
* Apache Kafka consumer & producer performance tester
* using the Kafka driver from librdkafka
* (https://github.com/confluentinc/librdkafka)
*/
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS /* Silence nonsense on MSVC */
#endif
#include "../src/rd.h"
#define _GNU_SOURCE /* for strndup() */
#include <ctype.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
/* Typical include path would be <librdkafka/rdkafka.h>, but this program
* is built from within the librdkafka source tree and thus differs. */
#include "rdkafka.h" /* for Kafka driver */
/* Do not include these defines from your program, they will not be
* provided by librdkafka. */
#include "rd.h"
#include "rdtime.h"
#ifdef _WIN32
#include "../win32/wingetopt.h"
#include "../win32/wintime.h"
#endif
static volatile sig_atomic_t run = 1;
static int forever = 1;
static rd_ts_t dispintvl = 1000;
static int do_seq = 0;
static int exit_after = 0;
static int exit_eof = 0;
static FILE *stats_fp;
static int dr_disp_div;
static int verbosity = 1;
static int latency_mode = 0;
static FILE *latency_fp = NULL;
static int msgcnt = -1;
static int incremental_mode = 0;
static int partition_cnt = 0;
static int eof_cnt = 0;
static int with_dr = 1;
static int read_hdrs = 0;
static void stop(int sig) {
if (!run)
exit(0);
run = 0;
}
static long int msgs_wait_cnt = 0;
static long int msgs_wait_produce_cnt = 0;
static rd_ts_t t_end;
static rd_kafka_t *global_rk;
struct avg {
int64_t val;
int cnt;
uint64_t ts_start;
};
static struct {
rd_ts_t t_start;
rd_ts_t t_end;
rd_ts_t t_end_send;
uint64_t msgs;
uint64_t msgs_last;
uint64_t msgs_dr_ok;
uint64_t msgs_dr_err;
uint64_t bytes_dr_ok;
uint64_t bytes;
uint64_t bytes_last;
uint64_t tx;
uint64_t tx_err;
uint64_t avg_rtt;
uint64_t offset;
rd_ts_t t_fetch_latency;
rd_ts_t t_last;
rd_ts_t t_enobufs_last;
rd_ts_t t_total;
rd_ts_t latency_last;
rd_ts_t latency_lo;
rd_ts_t latency_hi;
rd_ts_t latency_sum;
int latency_cnt;
int64_t last_offset;
} cnt;
uint64_t wall_clock(void) {
struct timeval tv;
gettimeofday(&tv, NULL);
return ((uint64_t)tv.tv_sec * 1000000LLU) + ((uint64_t)tv.tv_usec);
}
static void err_cb(rd_kafka_t *rk, int err, const char *reason, void *opaque) {
if (err == RD_KAFKA_RESP_ERR__FATAL) {
char errstr[512];
err = rd_kafka_fatal_error(rk, errstr, sizeof(errstr));
printf("%% FATAL ERROR CALLBACK: %s: %s: %s\n",
rd_kafka_name(rk), rd_kafka_err2str(err), errstr);
} else {
printf("%% ERROR CALLBACK: %s: %s: %s\n", rd_kafka_name(rk),
rd_kafka_err2str(err), reason);
}
}
static void throttle_cb(rd_kafka_t *rk,
const char *broker_name,
int32_t broker_id,
int throttle_time_ms,
void *opaque) {
printf("%% THROTTLED %dms by %s (%" PRId32 ")\n", throttle_time_ms,
broker_name, broker_id);
}
static void offset_commit_cb(rd_kafka_t *rk,
rd_kafka_resp_err_t err,
rd_kafka_topic_partition_list_t *offsets,
void *opaque) {
int i;
if (err || verbosity >= 2)
printf("%% Offset commit of %d partition(s): %s\n",
offsets->cnt, rd_kafka_err2str(err));
for (i = 0; i < offsets->cnt; i++) {
rd_kafka_topic_partition_t *rktpar = &offsets->elems[i];
if (rktpar->err || verbosity >= 2)
printf("%% %s [%" PRId32 "] @ %" PRId64 ": %s\n",
rktpar->topic, rktpar->partition, rktpar->offset,
rd_kafka_err2str(err));
}
}
/**
* @brief Add latency measurement
*/
static void latency_add(int64_t ts, const char *who) {
if (ts > cnt.latency_hi)
cnt.latency_hi = ts;
if (!cnt.latency_lo || ts < cnt.latency_lo)
cnt.latency_lo = ts;
cnt.latency_last = ts;
cnt.latency_cnt++;
cnt.latency_sum += ts;
if (latency_fp)
fprintf(latency_fp, "%" PRIu64 "\n", ts);
}
static void msg_delivered(rd_kafka_t *rk,
const rd_kafka_message_t *rkmessage,
void *opaque) {
static rd_ts_t last;
rd_ts_t now = rd_clock();
static int msgs;
msgs++;
msgs_wait_cnt--;
if (rkmessage->err)
cnt.msgs_dr_err++;
else {
cnt.msgs_dr_ok++;
cnt.bytes_dr_ok += rkmessage->len;
}
if (latency_mode) {
/* Extract latency */
int64_t source_ts;
if (sscanf(rkmessage->payload, "LATENCY:%" SCNd64,
&source_ts) == 1)
latency_add(wall_clock() - source_ts, "producer");
}
if ((rkmessage->err && (cnt.msgs_dr_err < 50 ||
!(cnt.msgs_dr_err % (dispintvl / 1000)))) ||
!last || msgs_wait_cnt < 5 || !(msgs_wait_cnt % dr_disp_div) ||
(now - last) >= dispintvl * 1000 || verbosity >= 3) {
if (rkmessage->err && verbosity >= 2)
printf("%% Message delivery failed (broker %" PRId32
"): "
"%s [%" PRId32
"]: "
"%s (%li remain)\n",
rd_kafka_message_broker_id(rkmessage),
rd_kafka_topic_name(rkmessage->rkt),
rkmessage->partition,
rd_kafka_err2str(rkmessage->err), msgs_wait_cnt);
else if (verbosity > 2)
printf("%% Message delivered (offset %" PRId64
", broker %" PRId32
"): "
"%li remain\n",
rkmessage->offset,
rd_kafka_message_broker_id(rkmessage),
msgs_wait_cnt);
if (verbosity >= 3 && do_seq)
printf(" --> \"%.*s\"\n", (int)rkmessage->len,
(const char *)rkmessage->payload);
last = now;
}
cnt.last_offset = rkmessage->offset;
if (msgs_wait_produce_cnt == 0 && msgs_wait_cnt == 0 && !forever) {
if (verbosity >= 2 && cnt.msgs > 0) {
double error_percent =
(double)(cnt.msgs - cnt.msgs_dr_ok) / cnt.msgs *
100;
printf(
"%% Messages delivered with failure "
"percentage of %.5f%%\n",
error_percent);
}
t_end = rd_clock();
run = 0;
}
if (exit_after && exit_after <= msgs) {
printf("%% Hard exit after %i messages, as requested\n",
exit_after);
exit(0);
}
}
static void msg_consume(rd_kafka_message_t *rkmessage, void *opaque) {
if (rkmessage->err) {
if (rkmessage->err == RD_KAFKA_RESP_ERR__PARTITION_EOF) {
cnt.offset = rkmessage->offset;
if (verbosity >= 1)
printf(
"%% Consumer reached end of "
"%s [%" PRId32
"] "
"message queue at offset %" PRId64 "\n",
rd_kafka_topic_name(rkmessage->rkt),
rkmessage->partition, rkmessage->offset);
if (exit_eof && ++eof_cnt == partition_cnt)
run = 0;
return;
}
printf("%% Consume error for topic \"%s\" [%" PRId32
"] "
"offset %" PRId64 ": %s\n",
rkmessage->rkt ? rd_kafka_topic_name(rkmessage->rkt)
: "",
rkmessage->partition, rkmessage->offset,
rd_kafka_message_errstr(rkmessage));
if (rkmessage->err == RD_KAFKA_RESP_ERR__UNKNOWN_PARTITION ||
rkmessage->err == RD_KAFKA_RESP_ERR__UNKNOWN_TOPIC)
run = 0;
cnt.msgs_dr_err++;
return;
}
/* Start measuring from first message received */
if (!cnt.t_start)
cnt.t_start = cnt.t_last = rd_clock();
cnt.offset = rkmessage->offset;
cnt.msgs++;
cnt.bytes += rkmessage->len;
if (verbosity >= 3 || (verbosity >= 2 && !(cnt.msgs % 1000000)))
printf("@%" PRId64 ": %.*s: %.*s\n", rkmessage->offset,
(int)rkmessage->key_len, (char *)rkmessage->key,
(int)rkmessage->len, (char *)rkmessage->payload);
if (latency_mode) {
int64_t remote_ts, ts;
if (rkmessage->len > 8 &&
!memcmp(rkmessage->payload, "LATENCY:", 8) &&
sscanf(rkmessage->payload, "LATENCY:%" SCNd64,
&remote_ts) == 1) {
ts = wall_clock() - remote_ts;
if (ts > 0 && ts < (1000000 * 60 * 5)) {
latency_add(ts, "consumer");
} else {
if (verbosity >= 1)
printf(
"Received latency timestamp is too "
"far off: %" PRId64
"us (message offset %" PRId64
"): ignored\n",
ts, rkmessage->offset);
}
} else if (verbosity > 1)
printf("not a LATENCY payload: %.*s\n",
(int)rkmessage->len, (char *)rkmessage->payload);
}
if (read_hdrs) {
rd_kafka_headers_t *hdrs;
/* Force parsing of headers but don't do anything with them. */
rd_kafka_message_headers(rkmessage, &hdrs);
}
if (msgcnt != -1 && (int)cnt.msgs >= msgcnt)
run = 0;
}
static void rebalance_cb(rd_kafka_t *rk,
rd_kafka_resp_err_t err,
rd_kafka_topic_partition_list_t *partitions,
void *opaque) {
rd_kafka_error_t *error = NULL;
rd_kafka_resp_err_t ret_err = RD_KAFKA_RESP_ERR_NO_ERROR;
if (exit_eof && !strcmp(rd_kafka_rebalance_protocol(rk), "COOPERATIVE"))
fprintf(stderr,
"%% This example has not been modified to "
"support -e (exit on EOF) when "
"partition.assignment.strategy "
"is set to an incremental/cooperative strategy: "
"-e will not behave as expected\n");
switch (err) {
case RD_KAFKA_RESP_ERR__ASSIGN_PARTITIONS:
fprintf(stderr,
"%% Group rebalanced (%s): "
"%d new partition(s) assigned\n",
rd_kafka_rebalance_protocol(rk), partitions->cnt);
if (!strcmp(rd_kafka_rebalance_protocol(rk), "COOPERATIVE")) {
error = rd_kafka_incremental_assign(rk, partitions);
} else {
ret_err = rd_kafka_assign(rk, partitions);
eof_cnt = 0;
}
partition_cnt += partitions->cnt;
break;
case RD_KAFKA_RESP_ERR__REVOKE_PARTITIONS:
fprintf(stderr,
"%% Group rebalanced (%s): %d partition(s) revoked\n",
rd_kafka_rebalance_protocol(rk), partitions->cnt);
if (!strcmp(rd_kafka_rebalance_protocol(rk), "COOPERATIVE")) {
error = rd_kafka_incremental_unassign(rk, partitions);
partition_cnt -= partitions->cnt;
} else {
ret_err = rd_kafka_assign(rk, NULL);
partition_cnt = 0;
}
eof_cnt = 0; /* FIXME: Not correct for incremental case */
break;
default:
break;
}
if (error) {
fprintf(stderr, "%% incremental assign failure: %s\n",
rd_kafka_error_string(error));
rd_kafka_error_destroy(error);
} else if (ret_err) {
fprintf(stderr, "%% assign failure: %s\n",
rd_kafka_err2str(ret_err));
}
}
/**
* Find and extract single value from a two-level search.
* First find 'field1', then find 'field2' and extract its value.
* Returns 0 on miss else the value.
*/
static uint64_t json_parse_fields(const char *json,
const char **end,
const char *field1,
const char *field2) {
const char *t = json;
const char *t2;
int len1 = (int)strlen(field1);
int len2 = (int)strlen(field2);
while ((t2 = strstr(t, field1))) {
uint64_t v;
t = t2;
t += len1;
/* Find field */
if (!(t2 = strstr(t, field2)))
continue;
t2 += len2;
while (isspace((int)*t2))
t2++;
v = strtoull(t2, (char **)&t, 10);
if (t2 == t)
continue;
*end = t;
return v;
}
*end = t + strlen(t);
return 0;
}
/**
* Parse various values from rdkafka stats
*/
static void json_parse_stats(const char *json) {
const char *t;
#define MAX_AVGS 100 /* max number of brokers to scan for rtt */
uint64_t avg_rtt[MAX_AVGS + 1];
int avg_rtt_i = 0;
/* Store totals at end of array */
avg_rtt[MAX_AVGS] = 0;
/* Extract all broker RTTs */
t = json;
while (avg_rtt_i < MAX_AVGS && *t) {
avg_rtt[avg_rtt_i] =
json_parse_fields(t, &t, "\"rtt\":", "\"avg\":");
/* Skip low RTT values, means no messages are passing */
if (avg_rtt[avg_rtt_i] < 100 /*0.1ms*/)
continue;
avg_rtt[MAX_AVGS] += avg_rtt[avg_rtt_i];
avg_rtt_i++;
}
if (avg_rtt_i > 0)
avg_rtt[MAX_AVGS] /= avg_rtt_i;
cnt.avg_rtt = avg_rtt[MAX_AVGS];
}
static int stats_cb(rd_kafka_t *rk, char *json, size_t json_len, void *opaque) {
/* Extract values for our own stats */
json_parse_stats(json);
if (stats_fp)
fprintf(stats_fp, "%s\n", json);
return 0;
}
#define _OTYPE_TAB 0x1 /* tabular format */
#define _OTYPE_SUMMARY 0x2 /* summary format */
#define _OTYPE_FORCE 0x4 /* force output regardless of interval timing */
static void
print_stats(rd_kafka_t *rk, int mode, int otype, const char *compression) {
rd_ts_t now = rd_clock();
rd_ts_t t_total;
static int rows_written = 0;
int print_header;
double latency_avg = 0.0f;
char extra[512];
int extra_of = 0;
*extra = '\0';
if (!(otype & _OTYPE_FORCE) &&
(((otype & _OTYPE_SUMMARY) && verbosity == 0) ||
cnt.t_last + dispintvl > now))
return;
print_header = !rows_written || (verbosity > 0 && !(rows_written % 20));
if (cnt.t_end_send)
t_total = cnt.t_end_send - cnt.t_start;
else if (cnt.t_end)
t_total = cnt.t_end - cnt.t_start;
else if (cnt.t_start)
t_total = now - cnt.t_start;
else
t_total = 1;
if (latency_mode && cnt.latency_cnt)
latency_avg = (double)cnt.latency_sum / (double)cnt.latency_cnt;
if (mode == 'P') {
if (otype & _OTYPE_TAB) {
#define ROW_START() \
do { \
} while (0)
#define COL_HDR(NAME) printf("| %10.10s ", (NAME))
#define COL_PR64(NAME, VAL) printf("| %10" PRIu64 " ", (VAL))
#define COL_PRF(NAME, VAL) printf("| %10.2f ", (VAL))
#define ROW_END() \
do { \
printf("\n"); \
rows_written++; \
} while (0)
if (print_header) {
/* First time, print header */
ROW_START();
COL_HDR("elapsed");
COL_HDR("msgs");
COL_HDR("bytes");
COL_HDR("rtt");
COL_HDR("dr");
COL_HDR("dr_m/s");
COL_HDR("dr_MB/s");
COL_HDR("dr_err");
COL_HDR("tx_err");
COL_HDR("outq");
COL_HDR("offset");
if (latency_mode) {
COL_HDR("lat_curr");
COL_HDR("lat_avg");
COL_HDR("lat_lo");
COL_HDR("lat_hi");
}
ROW_END();
}
ROW_START();
COL_PR64("elapsed", t_total / 1000);
COL_PR64("msgs", cnt.msgs);
COL_PR64("bytes", cnt.bytes);
COL_PR64("rtt", cnt.avg_rtt / 1000);
COL_PR64("dr", cnt.msgs_dr_ok);
COL_PR64("dr_m/s",
((cnt.msgs_dr_ok * 1000000) / t_total));
COL_PRF("dr_MB/s",
(float)((cnt.bytes_dr_ok) / (float)t_total));
COL_PR64("dr_err", cnt.msgs_dr_err);
COL_PR64("tx_err", cnt.tx_err);
COL_PR64("outq",
rk ? (uint64_t)rd_kafka_outq_len(rk) : 0);
COL_PR64("offset", (uint64_t)cnt.last_offset);
if (latency_mode) {
COL_PRF("lat_curr", cnt.latency_last / 1000.0f);
COL_PRF("lat_avg", latency_avg / 1000.0f);
COL_PRF("lat_lo", cnt.latency_lo / 1000.0f);
COL_PRF("lat_hi", cnt.latency_hi / 1000.0f);
}
ROW_END();
}
if (otype & _OTYPE_SUMMARY) {
printf("%% %" PRIu64
" messages produced "
"(%" PRIu64
" bytes), "
"%" PRIu64
" delivered "
"(offset %" PRId64 ", %" PRIu64
" failed) "
"in %" PRIu64 "ms: %" PRIu64
" msgs/s and "
"%.02f MB/s, "
"%" PRIu64
" produce failures, %i in queue, "
"%s compression\n",
cnt.msgs, cnt.bytes, cnt.msgs_dr_ok,
cnt.last_offset, cnt.msgs_dr_err, t_total / 1000,
((cnt.msgs_dr_ok * 1000000) / t_total),
(float)((cnt.bytes_dr_ok) / (float)t_total),
cnt.tx_err, rk ? rd_kafka_outq_len(rk) : 0,
compression);
}
} else {
if (otype & _OTYPE_TAB) {
if (print_header) {
/* First time, print header */
ROW_START();
COL_HDR("elapsed");
COL_HDR("msgs");
COL_HDR("bytes");
COL_HDR("rtt");
COL_HDR("m/s");
COL_HDR("MB/s");
COL_HDR("rx_err");
COL_HDR("offset");
if (latency_mode) {
COL_HDR("lat_curr");
COL_HDR("lat_avg");
COL_HDR("lat_lo");
COL_HDR("lat_hi");
}
ROW_END();
}
ROW_START();
COL_PR64("elapsed", t_total / 1000);
COL_PR64("msgs", cnt.msgs);
COL_PR64("bytes", cnt.bytes);
COL_PR64("rtt", cnt.avg_rtt / 1000);
COL_PR64("m/s", ((cnt.msgs * 1000000) / t_total));
COL_PRF("MB/s", (float)((cnt.bytes) / (float)t_total));
COL_PR64("rx_err", cnt.msgs_dr_err);
COL_PR64("offset", cnt.offset);
if (latency_mode) {
COL_PRF("lat_curr", cnt.latency_last / 1000.0f);
COL_PRF("lat_avg", latency_avg / 1000.0f);
COL_PRF("lat_lo", cnt.latency_lo / 1000.0f);
COL_PRF("lat_hi", cnt.latency_hi / 1000.0f);
}
ROW_END();
}
if (otype & _OTYPE_SUMMARY) {
if (latency_avg >= 1.0f)
extra_of += rd_snprintf(
extra + extra_of, sizeof(extra) - extra_of,
", latency "
"curr/avg/lo/hi "
"%.2f/%.2f/%.2f/%.2fms",
cnt.latency_last / 1000.0f,
latency_avg / 1000.0f,
cnt.latency_lo / 1000.0f,
cnt.latency_hi / 1000.0f);
printf("%% %" PRIu64 " messages (%" PRIu64
" bytes) "
"consumed in %" PRIu64 "ms: %" PRIu64
" msgs/s "
"(%.02f MB/s)"
"%s\n",
cnt.msgs, cnt.bytes, t_total / 1000,
((cnt.msgs * 1000000) / t_total),
(float)((cnt.bytes) / (float)t_total), extra);
}
if (incremental_mode && now > cnt.t_last) {
uint64_t i_msgs = cnt.msgs - cnt.msgs_last;
uint64_t i_bytes = cnt.bytes - cnt.bytes_last;
uint64_t i_time = cnt.t_last ? now - cnt.t_last : 0;
printf("%% INTERVAL: %" PRIu64
" messages "
"(%" PRIu64
" bytes) "
"consumed in %" PRIu64 "ms: %" PRIu64
" msgs/s "
"(%.02f MB/s)"
"%s\n",
i_msgs, i_bytes, i_time / 1000,
((i_msgs * 1000000) / i_time),
(float)((i_bytes) / (float)i_time), extra);
}
}
cnt.t_last = now;
cnt.msgs_last = cnt.msgs;
cnt.bytes_last = cnt.bytes;
}
static void sig_usr1(int sig) {
rd_kafka_dump(stdout, global_rk);
}
/**
* @brief Read config from file
* @returns -1 on error, else 0.
*/
static int read_conf_file(rd_kafka_conf_t *conf, const char *path) {
FILE *fp;
char buf[512];
int line = 0;
char errstr[512];
if (!(fp = fopen(path, "r"))) {
fprintf(stderr, "%% Failed to open %s: %s\n", path,
strerror(errno));
return -1;
}
while (fgets(buf, sizeof(buf), fp)) {
char *s = buf;
char *t;
rd_kafka_conf_res_t r = RD_KAFKA_CONF_UNKNOWN;
line++;
while (isspace((int)*s))
s++;
if (!*s || *s == '#')
continue;
if ((t = strchr(buf, '\n')))
*t = '\0';
t = strchr(buf, '=');
if (!t || t == s || !*(t + 1)) {
fprintf(stderr, "%% %s:%d: expected key=value\n", path,
line);
fclose(fp);
return -1;
}
*(t++) = '\0';
/* Try global config */
r = rd_kafka_conf_set(conf, s, t, errstr, sizeof(errstr));
if (r == RD_KAFKA_CONF_OK)
continue;
fprintf(stderr, "%% %s:%d: %s=%s: %s\n", path, line, s, t,
errstr);
fclose(fp);
return -1;
}
fclose(fp);
return 0;
}
static rd_kafka_resp_err_t do_produce(rd_kafka_t *rk,
rd_kafka_topic_t *rkt,
int32_t partition,
int msgflags,
void *payload,
size_t size,
const void *key,
size_t key_size,
const rd_kafka_headers_t *hdrs) {
/* Send/Produce message. */
if (hdrs) {
rd_kafka_headers_t *hdrs_copy;
rd_kafka_resp_err_t err;
hdrs_copy = rd_kafka_headers_copy(hdrs);
err = rd_kafka_producev(
rk, RD_KAFKA_V_RKT(rkt), RD_KAFKA_V_PARTITION(partition),
RD_KAFKA_V_MSGFLAGS(msgflags),
RD_KAFKA_V_VALUE(payload, size),
RD_KAFKA_V_KEY(key, key_size),
RD_KAFKA_V_HEADERS(hdrs_copy), RD_KAFKA_V_END);
if (err)
rd_kafka_headers_destroy(hdrs_copy);
return err;
} else {
if (rd_kafka_produce(rkt, partition, msgflags, payload, size,
key, key_size, NULL) == -1)
return rd_kafka_last_error();
}
return RD_KAFKA_RESP_ERR_NO_ERROR;
}
/**
* @brief Sleep for \p sleep_us microseconds.
*/
static void do_sleep(int sleep_us) {
if (sleep_us > 100) {
#ifdef _WIN32
Sleep(sleep_us / 1000);
#else
usleep(sleep_us);
#endif
} else {
rd_ts_t next = rd_clock() + (rd_ts_t)sleep_us;
while (next > rd_clock())
;
}
}
int main(int argc, char **argv) {
char *brokers = NULL;
char mode = 'C';
char *topic = NULL;
const char *key = NULL;
int *partitions = NULL;
int opt;
int sendflags = 0;
char *msgpattern = "librdkafka_performance testing!";
int msgsize = -1;
const char *debug = NULL;
int do_conf_dump = 0;
rd_ts_t now;
char errstr[512];
uint64_t seq = 0;
int seed = (int)time(NULL);
rd_kafka_t *rk;
rd_kafka_topic_t *rkt;
rd_kafka_conf_t *conf;
rd_kafka_queue_t *rkqu = NULL;
const char *compression = "no";
int64_t start_offset = 0;
int batch_size = 0;
int idle = 0;
const char *stats_cmd = NULL;
char *stats_intvlstr = NULL;
char tmp[128];
char *tmp2;
int otype = _OTYPE_SUMMARY;
double dtmp;
int rate_sleep = 0;
rd_kafka_topic_partition_list_t *topics;
int exitcode = 0;
rd_kafka_headers_t *hdrs = NULL;
rd_kafka_resp_err_t err;
/* Kafka configuration */
conf = rd_kafka_conf_new();
rd_kafka_conf_set_error_cb(conf, err_cb);
rd_kafka_conf_set_throttle_cb(conf, throttle_cb);
rd_kafka_conf_set_offset_commit_cb(conf, offset_commit_cb);
#ifdef SIGIO
/* Quick termination */
rd_snprintf(tmp, sizeof(tmp), "%i", SIGIO);
rd_kafka_conf_set(conf, "internal.termination.signal", tmp, NULL, 0);
#endif
/* Producer config */
rd_kafka_conf_set(conf, "linger.ms", "1000", NULL, 0);
rd_kafka_conf_set(conf, "message.send.max.retries", "3", NULL, 0);
rd_kafka_conf_set(conf, "retry.backoff.ms", "500", NULL, 0);
/* Consumer config */
/* Tell rdkafka to (try to) maintain 1M messages
* in its internal receive buffers. This is to avoid
* application -> rdkafka -> broker per-message ping-pong
* latency.
* The larger the local queue, the higher the performance.
* Try other values with: ... -X queued.min.messages=1000
*/
rd_kafka_conf_set(conf, "queued.min.messages", "1000000", NULL, 0);
rd_kafka_conf_set(conf, "session.timeout.ms", "6000", NULL, 0);
rd_kafka_conf_set(conf, "auto.offset.reset", "earliest", NULL, 0);
topics = rd_kafka_topic_partition_list_new(1);
while ((opt = getopt(argc, argv,
"PCG:t:p:b:s:k:c:fi:MDd:m:S:x:"
"R:a:z:o:X:B:eT:Y:qvIur:lA:OwNH:")) != -1) {
switch (opt) {
case 'G':
if (rd_kafka_conf_set(conf, "group.id", optarg, errstr,
sizeof(errstr)) !=
RD_KAFKA_CONF_OK) {
fprintf(stderr, "%% %s\n", errstr);
exit(1);
}
/* FALLTHRU */
case 'P':
case 'C':
mode = opt;
break;
case 't':
rd_kafka_topic_partition_list_add(
topics, optarg, RD_KAFKA_PARTITION_UA);
break;
case 'p':
partition_cnt++;
partitions = realloc(partitions, sizeof(*partitions) *
partition_cnt);
partitions[partition_cnt - 1] = atoi(optarg);
break;
case 'b':
brokers = optarg;
break;
case 's':
msgsize = atoi(optarg);
break;
case 'k':
key = optarg;
break;
case 'c':
msgcnt = atoi(optarg);
break;
case 'D':
sendflags |= RD_KAFKA_MSG_F_FREE;
break;
case 'i':
dispintvl = atoi(optarg);
break;
case 'm':
msgpattern = optarg;
break;
case 'S':
seq = strtoull(optarg, NULL, 10);
do_seq = 1;
break;
case 'x':
exit_after = atoi(optarg);
break;
case 'R':
seed = atoi(optarg);
break;
case 'a':
if (rd_kafka_conf_set(conf, "acks", optarg, errstr,
sizeof(errstr)) !=
RD_KAFKA_CONF_OK) {
fprintf(stderr, "%% %s\n", errstr);
exit(1);
}
break;
case 'B':
batch_size = atoi(optarg);
break;
case 'z':
if (rd_kafka_conf_set(conf, "compression.codec", optarg,
errstr, sizeof(errstr)) !=
RD_KAFKA_CONF_OK) {
fprintf(stderr, "%% %s\n", errstr);
exit(1);
}
compression = optarg;
break;
case 'o':
if (!strcmp(optarg, "end"))
start_offset = RD_KAFKA_OFFSET_END;
else if (!strcmp(optarg, "beginning"))
start_offset = RD_KAFKA_OFFSET_BEGINNING;
else if (!strcmp(optarg, "stored"))
start_offset = RD_KAFKA_OFFSET_STORED;
else {
start_offset = strtoll(optarg, NULL, 10);
if (start_offset < 0)
start_offset =
RD_KAFKA_OFFSET_TAIL(-start_offset);
}
break;
case 'e':
exit_eof = 1;
break;
case 'd':
debug = optarg;
break;
case 'H':
if (!strcmp(optarg, "parse"))
read_hdrs = 1;
else {
char *name, *val;
size_t name_sz = -1;