ssize_t rd_strndiffpos (const char *s1, size_t size1,
const char *s2, size_t size2) {
ssize_t i;
size_t minlen = RD_MIN(size1, size2);
for (i = 0 ; i < minlen ; i++)
if (s1[i] != s2[i])
return i;
if (size1 != size2)
return minlen;
return -1;
}
int rd_file_write (const char *path, const char *buf, int len,
int flags, mode_t mode) {
int fd;
int r;
int of = 0;
if ((fd = open(path, O_CREAT|O_WRONLY|flags, mode)) == -1)
return -1;
while (of < len) {
if ((r = write(fd, buf+of, RD_MIN(16384, len - of))) == -1) {
close(fd);
return -1;
}
of += r;
}
close(fd);
return 0;
}
/**
* OpenSSL password query callback
*
* Locality: application thread
*/
static int rd_kafka_transport_ssl_passwd_cb (char *buf, int size, int rwflag,
void *userdata) {
rd_kafka_t *rk = userdata;
int pwlen;
rd_kafka_dbg(rk, SECURITY, "SSLPASSWD",
"Private key file \"%s\" requires password",
rk->rk_conf.ssl.key_location);
if (!rk->rk_conf.ssl.key_password) {
rd_kafka_log(rk, LOG_WARNING, "SSLPASSWD",
"Private key file \"%s\" requires password but "
"no password configured (ssl.key.password)",
rk->rk_conf.ssl.key_location);
return -1;
}
pwlen = (int) strlen(rk->rk_conf.ssl.key_password);
memcpy(buf, rk->rk_conf.ssl.key_password, RD_MIN(pwlen, size));
return pwlen;
}
static ssize_t render_callback (const char *key, char *buf,
size_t size, void *opaque) {
rd_kafka_broker_t *rkb = opaque;
if (!strcmp(key, "broker.name")) {
char *val, *t;
size_t len;
rd_kafka_broker_lock(rkb);
rd_strdupa(&val, rkb->rkb_nodename);
rd_kafka_broker_unlock(rkb);
/* Just the broker name, no port */
if ((t = strchr(val, ':')))
len = (size_t)(t-val);
else
len = strlen(val);
if (buf)
memcpy(buf, val, RD_MIN(len, size));
return len;
} else {
rd_kafka_conf_res_t res;
size_t destsize = size;
/* Try config lookup. */
res = rd_kafka_conf_get(&rkb->rkb_rk->rk_conf, key,
buf, &destsize);
if (res != RD_KAFKA_CONF_OK)
return -1;
/* Dont include \0 in returned size */
return (destsize > 0 ? destsize-1 : destsize);
}
}
int main (int argc, char **argv) {
char *brokers = "localhost";
char mode = 'C';
char *topic = NULL;
const char *key = NULL;
int partition = RD_KAFKA_PARTITION_UA; /* random */
int opt;
int msgcnt = -1;
int sendflags = 0;
char *msgpattern = "librdkafka_performance testing!";
int msgsize = strlen(msgpattern);
const char *debug = NULL;
rd_ts_t now;
char errstr[512];
uint64_t seq = 0;
int seed = time(NULL);
rd_kafka_topic_t *rkt;
rd_kafka_conf_t *conf;
rd_kafka_topic_conf_t *topic_conf;
const char *compression = "no";
int64_t start_offset = 0;
int batch_size = 0;
/* Kafka configuration */
conf = rd_kafka_conf_new();
rd_kafka_conf_set_error_cb(conf, err_cb);
rd_kafka_conf_set_dr_cb(conf, msg_delivered);
/* Producer config */
rd_kafka_conf_set(conf, "queue.buffering.max.messages", "500000",
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);
/* Kafka topic configuration */
topic_conf = rd_kafka_topic_conf_new();
rd_kafka_topic_conf_set(topic_conf, "message.timeout.ms", "5000",
NULL, 0);
while ((opt =
getopt(argc, argv,
"PCt:p:b:s:k:c:fi:Dd:m:S:x:R:a:z:o:X:B:eT:q")) != -1) {
switch (opt) {
case 'P':
case 'C':
mode = opt;
break;
case 't':
topic = optarg;
break;
case 'p':
partition = 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_topic_conf_set(topic_conf,
"request.required.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':
start_offset = strtoll(optarg, NULL, 10);
break;
case 'e':
exit_eof = 1;
break;
case 'd':
debug = optarg;
break;
case 'X':
{
char *name, *val;
rd_kafka_conf_res_t res;
if (!strcmp(optarg, "list") ||
!strcmp(optarg, "help")) {
rd_kafka_conf_properties_show(stdout);
exit(0);
}
name = optarg;
if (!(val = strchr(name, '='))) {
fprintf(stderr, "%% Expected "
"-X property=value, not %s\n", name);
exit(1);
}
*val = '\0';
val++;
res = RD_KAFKA_CONF_UNKNOWN;
/* Try "topic." prefixed properties on topic
* conf first, and then fall through to global if
* it didnt match a topic configuration property. */
if (!strncmp(name, "topic.", strlen("topic.")))
res = rd_kafka_topic_conf_set(topic_conf,
name+
strlen("topic"),
val,
errstr,
sizeof(errstr));
if (res == RD_KAFKA_CONF_UNKNOWN)
res = rd_kafka_conf_set(conf, name, val,
errstr, sizeof(errstr));
if (res != RD_KAFKA_CONF_OK) {
fprintf(stderr, "%% %s\n", errstr);
exit(1);
}
}
break;
case 'T':
if (rd_kafka_conf_set(conf, "statistics.interval.ms",
optarg, errstr, sizeof(errstr)) !=
RD_KAFKA_CONF_OK) {
fprintf(stderr, "%% %s\n", errstr);
exit(1);
}
rd_kafka_conf_set_stats_cb(conf, stats_cb);
break;
case 'q':
quiet = 1;
break;
default:
goto usage;
}
}
if (!topic || optind != argc) {
usage:
fprintf(stderr,
"Usage: %s [-C|-P] -t <topic> "
"[-p <partition>] [-b <broker,broker..>] [options..]\n"
"\n"
" Options:\n"
" -C | -P Consumer or Producer mode\n"
" -t <topic> Topic to fetch / produce\n"
" -p <num> Partition (defaults to random)\n"
" -b <brokers> Broker address list (host[:port],..)\n"
" -s <size> Message size (producer)\n"
" -k <key> Message key (producer)\n"
" -c <cnt> Messages to transmit/receive\n"
" -D Copy/Duplicate data buffer (producer)\n"
" -i <ms> Display interval\n"
" -m <msg> Message payload pattern\n"
" -S <start> Send a sequence number starting at "
"<start> as payload\n"
" -R <seed> Random seed value (defaults to time)\n"
" -a <acks> Required acks (producer): "
"-1, 0, 1, >1\n"
" -B <size> Consume batch size (# of msgs)\n"
" -z <codec> Enable compression:\n"
" none|gzip|snappy\n"
" -o <offset> Start offset (consumer)\n"
" -d [facs..] Enable debugging contexts:\n"
" %s\n"
" -X <prop=name> Set arbitrary librdkafka "
"configuration property\n"
" Properties prefixed with \"topic.\" "
"will be set on topic object.\n"
" Use '-X list' to see the full list\n"
" of supported properties.\n"
" -T <intvl> Enable statistics from librdkafka at "
"specified interval (ms)\n"
" -q Be more quiet\n"
"\n"
" In Consumer mode:\n"
" consumes messages and prints thruput\n"
" If -B <..> is supplied the batch consumer\n"
" mode is used, else the callback mode is used.\n"
"\n"
" In Producer mode:\n"
" writes messages of size -s <..> and prints thruput\n"
"\n",
argv[0],
RD_KAFKA_DEBUG_CONTEXTS);
exit(1);
}
dispintvl *= 1000; /* us */
printf("%% Using random seed %i\n", seed);
srand(seed);
signal(SIGINT, stop);
signal(SIGUSR1, sig_usr1);
if (debug &&
rd_kafka_conf_set(conf, "debug", debug, errstr, sizeof(errstr)) !=
RD_KAFKA_CONF_OK) {
printf("%% Debug configuration failed: %s: %s\n",
errstr, debug);
exit(1);
}
/* Socket hangups are gracefully handled in librdkafka on socket error
* without the use of signals, so SIGPIPE should be ignored by the
* calling program. */
signal(SIGPIPE, SIG_IGN);
if (msgcnt != -1)
forever = 0;
if (mode == 'P') {
/*
* Producer
*/
char *sbuf;
char *pbuf;
int outq;
int i;
int keylen = key ? strlen(key) : 0;
off_t rof = 0;
size_t plen = strlen(msgpattern);
if (do_seq) {
if (msgsize < strlen("18446744073709551615: ")+1)
msgsize = strlen("18446744073709551615: ")+1;
/* Force duplication of payload */
sendflags |= RD_KAFKA_MSG_F_FREE;
}
sbuf = malloc(msgsize);
/* Copy payload content to new buffer */
while (rof < msgsize) {
size_t xlen = RD_MIN(msgsize-rof, plen);
memcpy(sbuf+rof, msgpattern, xlen);
rof += xlen;
}
if (msgcnt == -1)
printf("%% Sending messages of size %i bytes\n",
msgsize);
else
printf("%% Sending %i messages of size %i bytes\n",
msgcnt, msgsize);
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_PRODUCER, conf,
errstr, sizeof(errstr)))) {
fprintf(stderr,
"%% Failed to create Kafka producer: %s\n",
errstr);
exit(1);
}
if (debug)
rd_kafka_set_log_level(rk, 7);
/* Add broker(s) */
if (rd_kafka_brokers_add(rk, brokers) < 1) {
fprintf(stderr, "%% No valid brokers specified\n");
exit(1);
}
/* Explicitly create topic to avoid per-msg lookups. */
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
cnt.t_start = rd_clock();
while (run && (msgcnt == -1 || cnt.msgs < msgcnt)) {
/* Send/Produce message. */
if (do_seq) {
snprintf(sbuf, msgsize-1, "%"PRIu64": ", seq);
seq++;
}
if (sendflags & RD_KAFKA_MSG_F_FREE) {
/* Duplicate memory */
pbuf = malloc(msgsize);
memcpy(pbuf, sbuf, msgsize);
} else
pbuf = sbuf;
cnt.tx++;
while (run &&
rd_kafka_produce(rkt, partition,
sendflags, pbuf, msgsize,
key, keylen, NULL) == -1) {
if (!quiet || errno != ENOBUFS)
printf("produce error: %s%s\n",
strerror(errno),
errno == ENOBUFS ?
" (backpressure)":"");
cnt.tx_err++;
if (errno != ENOBUFS) {
run = 0;
break;
}
now = rd_clock();
if (cnt.t_last + dispintvl <= now) {
printf("%% Backpressure %i "
"(tx %"PRIu64", "
"txerr %"PRIu64")\n",
rd_kafka_outq_len(rk),
cnt.tx, cnt.tx_err);
cnt.t_last = now;
}
/* Poll to handle delivery reports */
rd_kafka_poll(rk, 10);
}
msgs_wait_cnt++;
cnt.msgs++;
cnt.bytes += msgsize;
print_stats(mode, 0, compression);
/* Must poll to handle delivery reports */
rd_kafka_poll(rk, 0);
}
forever = 0;
printf("All messages produced, "
"now waiting for %li deliveries\n",
msgs_wait_cnt);
rd_kafka_dump(stdout, rk);
/* Wait for messages to be delivered */
i = 0;
while (run && rd_kafka_poll(rk, 1000) != -1) {
if (!(i++ % (dispintvl/1000)))
printf("%% Waiting for %li, "
"%i messages in outq "
"to be sent. Abort with Ctrl-c\n",
msgs_wait_cnt,
rd_kafka_outq_len(rk));
}
outq = rd_kafka_outq_len(rk);
printf("%% %i messages in outq\n", outq);
cnt.msgs -= outq;
cnt.bytes -= msgsize * outq;
cnt.t_end = t_end;
if (cnt.tx_err > 0)
printf("%% %"PRIu64" backpressures for %"PRIu64
" produce calls: %.3f%% backpressure rate\n",
cnt.tx_err, cnt.tx,
((double)cnt.tx_err / (double)cnt.tx) * 100.0);
rd_kafka_dump(stdout, rk);
/* Destroy the handle */
rd_kafka_destroy(rk);
} else if (mode == 'C') {
/*
* Consumer
*/
rd_kafka_message_t **rkmessages = NULL;
#if 0 /* Future API */
/* The offset storage file is optional but its presence
* avoids starting all over from offset 0 again when
* the program restarts.
* ZooKeeper functionality will be implemented in future
* versions and then the offset will be stored there instead. */
conf.consumer.offset_file = "."; /* current directory */
/* Indicate to rdkafka that the application is responsible
* for storing the offset. This allows the application to
* successfully handle a message before storing the offset.
* If this flag is not set rdkafka will store the offset
* just prior to returning the message from rd_kafka_consume().
*/
conf.flags |= RD_KAFKA_CONF_F_APP_OFFSET_STORE;
#endif
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_CONSUMER, conf,
errstr, sizeof(errstr)))) {
fprintf(stderr,
"%% Failed to create Kafka producer: %s\n",
errstr);
exit(1);
}
if (debug)
rd_kafka_set_log_level(rk, 7);
/* Add broker(s) */
if (rd_kafka_brokers_add(rk, brokers) < 1) {
fprintf(stderr, "%% No valid brokers specified\n");
exit(1);
}
/* Create topic to consume from */
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
/* Batch consumer */
if (batch_size)
rkmessages = malloc(sizeof(*rkmessages) * batch_size);
/* Start consuming */
if (rd_kafka_consume_start(rkt, partition, start_offset) == -1){
fprintf(stderr, "%% Failed to start consuming: %s\n",
strerror(errno));
exit(1);
}
cnt.t_start = rd_clock();
while (run && (msgcnt == -1 || msgcnt > cnt.msgs)) {
/* Consume messages.
* A message may either be a real message, or
* an error signaling (if rkmessage->err is set).
*/
uint64_t latency;
int r;
latency = rd_clock();
if (batch_size) {
int i;
/* Batch fetch mode */
r = rd_kafka_consume_batch(rkt, partition,
1000,
rkmessages,
batch_size);
if (r != -1) {
for (i = 0 ; i < r ; i++) {
msg_consume(rkmessages[i],NULL);
rd_kafka_message_destroy(
rkmessages[i]);
}
}
} else {
/* Callback mode */
r = rd_kafka_consume_callback(rkt, partition,
1000/*timeout*/,
msg_consume,
NULL);
}
cnt.t_latency += rd_clock() - latency;
if (r == -1)
fprintf(stderr, "%% Error: %s\n",
strerror(errno));
print_stats(mode, 0, compression);
/* Poll to handle stats callbacks */
rd_kafka_poll(rk, 0);
}
cnt.t_end = rd_clock();
/* Stop consuming */
rd_kafka_consume_stop(rkt, partition);
/* Destroy topic */
rd_kafka_topic_destroy(rkt);
if (batch_size)
free(rkmessages);
/* Destroy the handle */
rd_kafka_destroy(rk);
}
print_stats(mode, 1, compression);
if (cnt.t_latency && cnt.msgs)
printf("%% Average application fetch latency: %"PRIu64"us\n",
cnt.t_latency / cnt.msgs);
/* Let background threads clean up and terminate cleanly. */
rd_kafka_wait_destroyed(2000);
return 0;
}
int main_0015_offsets_seek (int argc, char **argv) {
const char *topic = test_mk_topic_name("0015", 1);
rd_kafka_t *rk_p, *rk_c;
rd_kafka_topic_t *rkt_p, *rkt_c;
int msg_cnt = 1000;
int msg_base = 0;
int32_t partition = 0;
int i;
int64_t offset_last, offset_base;
uint64_t testid;
int dance_iterations = 10;
int msgs_per_dance = 10;
testid = test_id_generate();
/* Produce messages */
rk_p = test_create_producer();
rkt_p = test_create_producer_topic(rk_p, topic, NULL);
test_produce_msgs(rk_p, rkt_p, testid, partition, msg_base, msg_cnt,
NULL, 0);
rd_kafka_topic_destroy(rkt_p);
rd_kafka_destroy(rk_p);
rk_c = test_create_consumer(NULL, NULL, NULL, NULL);
rkt_c = test_create_consumer_topic(rk_c, topic);
/* Start consumer tests */
test_consumer_start("verify.all", rkt_c, partition,
RD_KAFKA_OFFSET_BEGINNING);
/* Make sure all messages are available */
offset_last = test_consume_msgs("verify.all", rkt_c,
testid, partition, TEST_NO_SEEK,
msg_base, msg_cnt, 1/* parse format*/);
/* Rewind offset back to its base. */
offset_base = offset_last - msg_cnt + 1;
TEST_SAY("%s [%"PRId32"]: Do random seek&consume for msgs #%d+%d with "
"offsets %"PRId64"..%"PRId64"\n",
rd_kafka_topic_name(rkt_c), partition,
msg_base, msg_cnt, offset_base, offset_last);
/* Now go dancing over the entire range with offset seeks. */
for (i = 0 ; i < dance_iterations ; i++) {
int64_t offset = jitter((int)offset_base,
(int)offset_base+msg_cnt);
test_consume_msgs("dance", rkt_c,
testid, partition, offset,
msg_base + (int)(offset - offset_base),
RD_MIN(msgs_per_dance,
(int)(offset_last - offset)),
1 /* parse format */);
}
test_consumer_stop("1", rkt_c, partition);
rd_kafka_topic_destroy(rkt_c);
rd_kafka_destroy(rk_c);
return 0;
}
