int kafka_consumer_::PullData(std::string& data)
{
rd_kafka_message_t *rkmessage;
int consume_result = PULL_DATA_SUCCESS;
printf("217consumer_info->rk:%p, rkt:%p, partition=%d\n", rk_, rkt_, partition_);
printf("217 begin poll\n");
rd_kafka_poll(rk_, 0);
printf("219begin consume\n");
rkmessage = rd_kafka_consume(rkt_, partition_, 1000);
if (!rkmessage)
return PULL_DATA_TIMEOUT;
printf("rkmessage->err:%d\n", (int)rkmessage->err);
if (rkmessage->err) {
if (rkmessage->err == RD_KAFKA_RESP_ERR__UNKNOWN_PARTITION ||
rkmessage->err == RD_KAFKA_RESP_ERR__UNKNOWN_TOPIC)
return CONSUMER_CONFIG_ERROR;
return PULL_DATA_FAILED;
}
data = std::string((const char*)rkmessage->payload, rkmessage->len);
rd_kafka_message_destroy(rkmessage);
return consume_result;
}
static void consume_messages (uint64_t testid, const char *topic,
int32_t partition, int msg_base, int batch_cnt,
int msgcnt) {
rd_kafka_t *rk;
rd_kafka_topic_t *rkt;
rd_kafka_conf_t *conf;
rd_kafka_topic_conf_t *topic_conf;
int i;
test_conf_init(&conf, &topic_conf, 20);
/* Create kafka instance */
rk = test_create_handle(RD_KAFKA_CONSUMER, conf);
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
if (!rkt)
TEST_FAIL("Failed to create topic: %s\n",
rd_kafka_err2str(rd_kafka_last_error()));
TEST_SAY("Consuming %i messages from partition %i\n",
batch_cnt, partition);
/* Consume messages */
if (rd_kafka_consume_start(rkt, partition,
RD_KAFKA_OFFSET_TAIL(batch_cnt)) == -1)
TEST_FAIL("consume_start(%i, -%i) failed: %s",
(int)partition, batch_cnt,
rd_kafka_err2str(rd_kafka_last_error()));
for (i = 0 ; i < batch_cnt ; i++) {
rd_kafka_message_t *rkmessage;
rkmessage = rd_kafka_consume(rkt, partition, tmout_multip(5000));
if (!rkmessage)
TEST_FAIL("Failed to consume message %i/%i from "
"partition %i: %s",
i, batch_cnt, (int)partition,
rd_kafka_err2str(rd_kafka_last_error()));
if (rkmessage->err)
TEST_FAIL("Consume message %i/%i from partition %i "
"has error: %s",
i, batch_cnt, (int)partition,
rd_kafka_err2str(rkmessage->err));
verify_consumed_msg(testid, partition, msg_base+i, rkmessage);
rd_kafka_message_destroy(rkmessage);
}
rd_kafka_consume_stop(rkt, partition);
/* Destroy topic */
rd_kafka_topic_destroy(rkt);
/* Destroy rdkafka instance */
TEST_SAY("Destroying kafka instance %s\n", rd_kafka_name(rk));
rd_kafka_destroy(rk);
}
int main (int argc, char **argv) {
if (argc < 0 /* always false */) {
rd_kafka_version();
rd_kafka_version_str();
rd_kafka_err2str(RD_KAFKA_RESP_ERR_NO_ERROR);
rd_kafka_errno2err(EINVAL);
rd_kafka_conf_new();
rd_kafka_conf_destroy(NULL);
rd_kafka_conf_dup(NULL);
rd_kafka_conf_set(NULL, NULL, NULL, NULL, 0);
rd_kafka_conf_set_dr_cb(NULL, NULL);
rd_kafka_conf_set_error_cb(NULL, NULL);
rd_kafka_conf_set_stats_cb(NULL, NULL);
rd_kafka_conf_set_opaque(NULL, NULL);
rd_kafka_conf_dump(NULL, NULL);
rd_kafka_topic_conf_dump(NULL, NULL);
rd_kafka_conf_dump_free(NULL, 0);
rd_kafka_conf_properties_show(NULL);
rd_kafka_topic_conf_new();
rd_kafka_topic_conf_dup(NULL);
rd_kafka_topic_conf_destroy(NULL);
rd_kafka_topic_conf_set(NULL, NULL, NULL, NULL, 0);
rd_kafka_topic_conf_set_opaque(NULL, NULL);
rd_kafka_topic_conf_set_partitioner_cb(NULL, NULL);
rd_kafka_topic_partition_available(NULL, 0);
rd_kafka_msg_partitioner_random(NULL, NULL, 0, 0, NULL, NULL);
rd_kafka_new(0, NULL, NULL, 0);
rd_kafka_destroy(NULL);
rd_kafka_name(NULL);
rd_kafka_topic_new(NULL, NULL, NULL);
rd_kafka_topic_destroy(NULL);
rd_kafka_topic_name(NULL);
rd_kafka_message_destroy(NULL);
rd_kafka_message_errstr(NULL);
rd_kafka_consume_start(NULL, 0, 0);
rd_kafka_consume_stop(NULL, 0);
rd_kafka_consume(NULL, 0, 0);
rd_kafka_consume_batch(NULL, 0, 0, NULL, 0);
rd_kafka_consume_callback(NULL, 0, 0, NULL, NULL);
rd_kafka_offset_store(NULL, 0, 0);
rd_kafka_produce(NULL, 0, 0, NULL, 0, NULL, 0, NULL);
rd_kafka_poll(NULL, 0);
rd_kafka_brokers_add(NULL, NULL);
rd_kafka_set_logger(NULL, NULL);
rd_kafka_set_log_level(NULL, 0);
rd_kafka_log_print(NULL, 0, NULL, NULL);
rd_kafka_log_syslog(NULL, 0, NULL, NULL);
rd_kafka_outq_len(NULL);
rd_kafka_dump(NULL, NULL);
rd_kafka_thread_cnt();
rd_kafka_wait_destroyed(0);
}
return 0;
}
RdKafka::Message *RdKafka::ConsumerImpl::consume (Topic *topic,
int32_t partition,
int timeout_ms) {
RdKafka::TopicImpl *topicimpl = dynamic_cast<RdKafka::TopicImpl *>(topic);
rd_kafka_message_t *rkmessage;
rkmessage = rd_kafka_consume(topicimpl->rkt_, partition, timeout_ms);
if (!rkmessage)
return new RdKafka::MessageImpl(topic,
static_cast<RdKafka::ErrorCode>
(rd_kafka_last_error()));
return new RdKafka::MessageImpl(topic, rkmessage);
}
static void *consumer_recv_msg(void *ptr)
{
rd_kafka_message_t *ret;
HermannInstanceConfig *consumerConfig = (HermannInstanceConfig *) ptr;
ret = rd_kafka_consume(consumerConfig->rkt, consumerConfig->partition, CONSUMER_RECVMSG_TIMEOUT_MS);
if ( ret == NULL ) {
if ( errno != ETIMEDOUT )
fprintf(stderr, "%% Error: %s\n", rd_kafka_err2str( rd_kafka_errno2err(errno)));
}
return (void *) ret;
}
int p_kafka_consume_poller(struct p_kafka_host *kafka_host, void **data, int timeout)
{
rd_kafka_message_t *kafka_msg;
int ret = SUCCESS;
if (kafka_host && data && timeout) {
kafka_msg = rd_kafka_consume(kafka_host->topic, kafka_host->partition, timeout);
if (!kafka_msg) ret = FALSE; /* timeout */
else ret = TRUE; /* got data */
(*data) = kafka_msg;
}
else return ERR;
return ret;
}
int consumer_pull_data(const wrapper_Info* consumer_info)
{
rd_kafka_message_t *rkmessage;
int consume_result;
printf("217consumer_info->rk:%p, rkt:%p, partition=%d\n", consumer_info->rk, consumer_info->rkt, consumer_info->partition);
printf("217 begin poll\n");
/* Poll for errors, etc. */
rd_kafka_poll(consumer_info->rk, 0);
printf("219begin consume\n");
/* Consume single message.
* See rdkafka_performance.c for high speed
* consuming of messages. */
rkmessage = rd_kafka_consume(consumer_info->rkt, consumer_info->partition, 1000);
if (!rkmessage) /* timeout */
return PULL_DATA_FAILED;
if (rkmessage->err) {
if (rkmessage->err == RD_KAFKA_RESP_ERR__PARTITION_EOF) {
// fprintf(stderr,
// "%% Consumer reached end of %s [%"PRId32"] "
// "message queue at offset %"PRId64"\n",
// rd_kafka_topic_name(rkmessage->rkt),
// rkmessage->partition, rkmessage->offset);
consume_result = PULL_DATA_SUCCESS;
}
// fprintf(stderr, "%% Consume error for topic \"%s\" [%"PRId32"] "
// "offset %"PRId64": %s\n",
// 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)
return rkmessage->err;
consume_result = PULL_DATA_FAILED;
}
consumer_info->func_consume_data((const char*)rkmessage->payload, (const int)rkmessage->len);
/* Return message to rdkafka */
rd_kafka_message_destroy(rkmessage);
return consume_result;
}
int Http::kafka_consumer_::PullData(std::string& data) {
rd_kafka_message_t *rkmessage;
rd_kafka_poll(rk_, 0);
rkmessage = rd_kafka_consume(rkt_, partition_, 10000);
if (!rkmessage)
return -2;
if (rkmessage->err) {
if (rkmessage->err == RD_KAFKA_RESP_ERR__UNKNOWN_PARTITION ||
rkmessage->err == RD_KAFKA_RESP_ERR__UNKNOWN_TOPIC) {
return -1;
}
return -3;
}
data = std::string((const char*)rkmessage->payload, rkmessage->len);
rd_kafka_message_destroy(rkmessage);
return 1;
}
int kafka_consume(rd_kafka_t *r, zval* return_value, char* topic, char* offset, int item_count, int partition)
{
int64_t start_offset = 0;
int read_counter = 0,
run = 1;
//nothing to consume?
if (item_count == 0)
return 0;
if (strlen(offset) != 0)
{
if (!strcmp(offset, "end"))
start_offset = RD_KAFKA_OFFSET_END;
else if (!strcmp(offset, "beginning"))
start_offset = RD_KAFKA_OFFSET_BEGINNING;
else if (!strcmp(offset, "stored"))
start_offset = RD_KAFKA_OFFSET_STORED;
else
{
start_offset = strtoll(offset, NULL, 10);
if (start_offset < 1)
return -1;
}
}
rd_kafka_topic_t *rkt;
if (r == NULL)
{
if (log_level)
{
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_ERR, "phpkafka - no connection to consume from topic: %s", topic);
}
return -2;
}
rd_kafka_topic_conf_t *topic_conf;
/* Topic configuration */
topic_conf = rd_kafka_topic_conf_new();
/* Create topic */
rkt = rd_kafka_topic_new(r, topic, topic_conf);
if (rkt == NULL)
{
if (log_level)
{
openlog("phpkafka", 0, LOG_USER);
syslog(
LOG_ERR,
"Failed to consume from topic %s: %s",
topic,
rd_kafka_err2str(
rd_kafka_errno2err(errno)
)
);
}
return -3;
}
if (log_level)
{
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "phpkafka - start_offset: %"PRId64" and offset passed: %s", start_offset, offset);
}
/* Start consuming */
if (rd_kafka_consume_start(rkt, partition, start_offset) == -1)
{
if (log_level)
{
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "phpkafka - %% Failed to start consuming: %s",
rd_kafka_err2str(rd_kafka_errno2err(errno)));
}
return -4;
}
/**
* Keep reading until run == 0, or read_counter == item_count
*/
for (read_counter=0;read_counter!=item_count;++read_counter)
{
if (run == 0)
break;
if (log_level)
{
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "Consuming, count at %d (of %d - run: %d)",
read_counter,
item_count,
run
);
}
rd_kafka_message_t *rkmessage = NULL,
*rkmessage_return = NULL;
/* Consume single message.
* See rdkafka_performance.c for high speed
* consuming of messages. */
rkmessage = rd_kafka_consume(rkt, partition, 1000);
//timeout ONLY if error didn't cause run to be 0
if (!rkmessage)
{
//break on timeout, makes second call redundant
if (errno == ETIMEDOUT)
{
if (log_level)
{
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "Consumer timed out, count at %d (of %d) stop consuming after %d messages",
read_counter,
item_count,
read_counter +1
);
}
break;
}
continue;
}
rkmessage_return = msg_consume(rkmessage, &run);
if (rkmessage_return != NULL)
{
if ((int) rkmessage_return->len > 0)
{
//ensure there is a payload
char payload[(int) rkmessage_return->len];
sprintf(payload, "%.*s", (int) rkmessage_return->len, (char *) rkmessage_return->payload);
add_index_string(return_value, (int) rkmessage_return->offset, payload, 1);
}
else
{
//add empty value
char payload[1] = "";//empty string
add_index_string(return_value, (int) rkmessage_return->offset, payload, 1);
}
}
/* Return message to rdkafka */
rd_kafka_message_destroy(rkmessage);
}
/* Stop consuming */
rd_kafka_consume_stop(rkt, partition);
rd_kafka_topic_destroy(rkt);
return 0;
}
int main (int argc, char **argv) {
rd_kafka_t *rk;
char *broker = NULL;
char mode = 'C';
char *topic = NULL;
int partition = 0;
int opt;
int msgsize = 1024;
int msgcnt = -1;
int sendflags = 0;
int dispintvl = 1000;
struct {
rd_ts_t t_start;
rd_ts_t t_end;
rd_ts_t t_end_send;
uint64_t msgs;
uint64_t bytes;
rd_ts_t t_latency;
rd_ts_t t_last;
rd_ts_t t_total;
} cnt = {};
rd_ts_t now;
char *dirstr = "";
while ((opt = getopt(argc, argv, "PCt:p:b:s:c:fi:D")) != -1) {
switch (opt) {
case 'P':
case 'C':
mode = opt;
break;
case 't':
topic = optarg;
break;
case 'p':
partition = atoi(optarg);
break;
case 'b':
broker = optarg;
break;
case 's':
msgsize = atoi(optarg);
break;
case 'c':
msgcnt = atoi(optarg);
break;
case 'D':
sendflags |= RD_KAFKA_OP_F_FREE;
break;
case 'i':
dispintvl = atoi(optarg);
break;
default:
goto usage;
}
}
if (!topic || optind != argc) {
usage:
fprintf(stderr,
"Usage: %s [-C|-P] -t <topic> "
"[-p <partition>] [-b <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 0)\n"
" -b <broker> Broker address (localhost:9092)\n"
" -s <size> Message size (producer)\n"
" -c <cnt> Messages to transmit/receive\n"
" -D Copy/Duplicate data buffer (producer)\n"
" -i <ms> Display interval\n"
"\n"
" In Consumer mode:\n"
" consumes messages and prints thruput\n"
" In Producer mode:\n"
" writes messages of size -s <..> and prints thruput\n"
"\n",
argv[0]);
exit(1);
}
dispintvl *= 1000; /* us */
signal(SIGINT, stop);
/* 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 (mode == 'P') {
/*
* Producer
*/
char *sbuf = malloc(msgsize);
int endwait;
int outq;
int i;
memset(sbuf, 'R', msgsize);
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, broker, NULL))) {
perror("kafka_new producer");
exit(1);
}
cnt.t_start = rd_clock();
while (run && (msgcnt == -1 || cnt.msgs < msgcnt)) {
char *pbuf = sbuf;
/* Send/Produce message. */
if (sendflags & RD_KAFKA_OP_F_FREE) {
/* Duplicate memory */
pbuf = malloc(msgsize);
memcpy(pbuf, sbuf, msgsize);
}
rd_kafka_produce(rk, topic, partition,
sendflags, pbuf, msgsize);
cnt.msgs++;
cnt.bytes += msgsize;
now = rd_clock();
if (cnt.t_last + dispintvl <= now) {
printf("%% %"PRIu64" messages and %"PRIu64
"bytes: %"PRIu64" msgs/s and "
"%.2f Mb/s\n",
cnt.msgs, cnt.bytes,
(cnt.msgs / (now - cnt.t_start)) *
1000000,
(float)(cnt.bytes /
(now - cnt.t_start)));
cnt.t_last = now;
}
}
/* Wait for messaging to finish. */
i = 0;
while (run && rd_kafka_outq_len(rk) > 0) {
if (!(i++ % (dispintvl/1000)))
printf("%% Waiting for %i messages in outq "
"to be sent. Abort with Ctrl-c\n",
rd_kafka_outq_len(rk));
usleep(1000);
}
cnt.t_end_send = rd_clock();
outq = rd_kafka_outq_len(rk);
cnt.msgs -= outq;
cnt.bytes -= msgsize * outq;
cnt.t_end = rd_clock();
/* Since there is no ack for produce messages in 0.7
* we wait some more for any packets in the socket buffers
* to be sent.
* This is fixed in protocol version 0.8 */
endwait = cnt.msgs * 10;
printf("%% Test timers stopped, but waiting %ims more "
"for the %"PRIu64 " messages to be transmitted from "
"socket buffers.\n"
"%% End with Ctrl-c\n",
endwait / 1000,
cnt.msgs);
run = 1;
while (run && endwait > 0) {
usleep(10000);
endwait -= 10000;
}
/* Destroy the handle */
rd_kafka_destroy(rk);
dirstr = "sent";
} else if (mode == 'C') {
/*
* Consumer
*/
rd_kafka_op_t *rko;
/* Base our configuration on the default config. */
rd_kafka_conf_t conf = rd_kafka_defaultconf;
/* 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
* succesfully 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;
/* Tell rdkafka to (try to) maintain 10000 messages
* in its internal receive buffers. This is to avoid
* application -> rdkafka -> broker per-message ping-pong
* latency. */
conf.consumer.replyq_low_thres = 100000;
/* Use the consumer convenience function
* to create a Kafka handle. */
if (!(rk = rd_kafka_new_consumer(broker, topic,
(uint32_t)partition,
0, &conf))) {
perror("kafka_new_consumer");
exit(1);
}
cnt.t_start = rd_clock();
while (run && (msgcnt == -1 || msgcnt > cnt.msgs)) {
/* Fetch an "op" which is one of:
* - a kafka message (if rko_len>0 && rko_err==0)
* - an error (if rko_err)
*/
uint64_t latency;
latency = rd_clock();
if (!(rko = rd_kafka_consume(rk, 1000/*timeout ms*/)))
continue;
cnt.t_latency += rd_clock() - latency;
if (rko->rko_err)
fprintf(stderr, "%% Error: %.*s\n",
rko->rko_len, rko->rko_payload);
else if (rko->rko_len) {
cnt.msgs++;
cnt.bytes += rko->rko_len;
}
/* rko_offset contains the offset of the _next_
* message. We store it when we're done processing
* the current message. */
if (rko->rko_offset)
rd_kafka_offset_store(rk, rko->rko_offset);
/* Destroy the op */
rd_kafka_op_destroy(rk, rko);
now = rd_clock();
if (cnt.t_last + dispintvl <= now &&
cnt.t_start + 1000000 < now) {
printf("%% %"PRIu64" messages and %"PRIu64
" bytes: %"PRIu64" msgs/s and "
"%.2f Mb/s\n",
cnt.msgs, cnt.bytes,
(cnt.msgs / ((now - cnt.t_start)/1000))
* 1000,
(float)(cnt.bytes /
((now - cnt.t_start) / 1000)));
cnt.t_last = now;
}
}
cnt.t_end = rd_clock();
/* Destroy the handle */
rd_kafka_destroy(rk);
dirstr = "received";
}
if (cnt.t_end_send)
cnt.t_total = cnt.t_end_send - cnt.t_start;
else
cnt.t_total = cnt.t_end - cnt.t_start;
printf("%% %"PRIu64" messages and %"PRIu64" bytes "
"%s in %"PRIu64"ms: %"PRIu64" msgs/s and %.02f Mb/s\n",
cnt.msgs, cnt.bytes,
dirstr,
cnt.t_total / 1000,
(cnt.msgs / (cnt.t_total / 1000)) * 1000,
(float)(cnt.bytes / (cnt.t_total / 1000)));
if (cnt.t_latency)
printf("%% Average application fetch latency: %"PRIu64"us\n",
cnt.t_latency / cnt.msgs);
return 0;
}
static void consume_messages (uint64_t testid, const char *topic,
int32_t partition, int msg_base, int batch_cnt,
int msgcnt) {
rd_kafka_t *rk;
rd_kafka_topic_t *rkt;
rd_kafka_conf_t *conf;
rd_kafka_topic_conf_t *topic_conf;
char errstr[512];
int i;
test_conf_init(&conf, &topic_conf, 20);
/* Create kafka instance */
rk = rd_kafka_new(RD_KAFKA_CONSUMER, conf, errstr, sizeof(errstr));
if (!rk)
TEST_FAIL("Failed to create rdkafka instance: %s\n", errstr);
TEST_SAY("Created kafka instance %s\n", rd_kafka_name(rk));
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
if (!rkt)
TEST_FAIL("Failed to create topic: %s\n",
rd_strerror(errno));
TEST_SAY("Consuming %i messages from partition %i\n",
batch_cnt, partition);
/* Consume messages */
if (rd_kafka_consume_start(rkt, partition,
RD_KAFKA_OFFSET_TAIL(batch_cnt)) == -1)
TEST_FAIL("consume_start(%i, -%i) failed: %s",
(int)partition, batch_cnt,
rd_kafka_err2str(rd_kafka_errno2err(errno)));
for (i = 0 ; i < batch_cnt ; ) {
rd_kafka_message_t *rkmessage;
rkmessage = rd_kafka_consume(rkt, partition, 5000);
if (!rkmessage)
TEST_FAIL("Failed to consume message %i/%i from "
"partition %i: %s",
i, batch_cnt, (int)partition,
rd_kafka_err2str(rd_kafka_errno2err(errno)));
if (rkmessage->err) {
if (rkmessage->err == RD_KAFKA_RESP_ERR__PARTITION_EOF){
rd_kafka_message_destroy(rkmessage);
continue;
}
TEST_FAIL("Consume message %i/%i from partition %i "
"has error: %s",
i, batch_cnt, (int)partition,
rd_kafka_err2str(rkmessage->err));
}
verify_consumed_msg(testid, partition, msg_base+i, rkmessage);
rd_kafka_message_destroy(rkmessage);
i++;
}
rd_kafka_consume_stop(rkt, partition);
/* Destroy topic */
rd_kafka_topic_destroy(rkt);
/* Destroy rdkafka instance */
TEST_SAY("Destroying kafka instance %s\n", rd_kafka_name(rk));
rd_kafka_destroy(rk);
}
int main_0006_symbols (int argc, char **argv) {
if (argc < 0 /* always false */) {
rd_kafka_version();
rd_kafka_version_str();
rd_kafka_get_debug_contexts();
rd_kafka_get_err_descs(NULL, NULL);
rd_kafka_err2str(RD_KAFKA_RESP_ERR_NO_ERROR);
rd_kafka_err2name(RD_KAFKA_RESP_ERR_NO_ERROR);
rd_kafka_errno2err(EINVAL);
rd_kafka_errno();
rd_kafka_last_error();
rd_kafka_conf_new();
rd_kafka_conf_destroy(NULL);
rd_kafka_conf_dup(NULL);
rd_kafka_conf_set(NULL, NULL, NULL, NULL, 0);
rd_kafka_conf_set_dr_cb(NULL, NULL);
rd_kafka_conf_set_dr_msg_cb(NULL, NULL);
rd_kafka_conf_set_error_cb(NULL, NULL);
rd_kafka_conf_set_stats_cb(NULL, NULL);
rd_kafka_conf_set_log_cb(NULL, NULL);
rd_kafka_conf_set_socket_cb(NULL, NULL);
rd_kafka_conf_set_rebalance_cb(NULL, NULL);
rd_kafka_conf_set_offset_commit_cb(NULL, NULL);
rd_kafka_conf_set_throttle_cb(NULL, NULL);
rd_kafka_conf_set_default_topic_conf(NULL, NULL);
rd_kafka_conf_get(NULL, NULL, NULL, NULL);
#ifndef _MSC_VER
rd_kafka_conf_set_open_cb(NULL, NULL);
#endif
rd_kafka_conf_set_opaque(NULL, NULL);
rd_kafka_opaque(NULL);
rd_kafka_conf_dump(NULL, NULL);
rd_kafka_topic_conf_dump(NULL, NULL);
rd_kafka_conf_dump_free(NULL, 0);
rd_kafka_conf_properties_show(NULL);
rd_kafka_topic_conf_new();
rd_kafka_topic_conf_dup(NULL);
rd_kafka_topic_conf_destroy(NULL);
rd_kafka_topic_conf_set(NULL, NULL, NULL, NULL, 0);
rd_kafka_topic_conf_set_opaque(NULL, NULL);
rd_kafka_topic_conf_get(NULL, NULL, NULL, NULL);
rd_kafka_topic_conf_set_partitioner_cb(NULL, NULL);
rd_kafka_topic_partition_available(NULL, 0);
rd_kafka_topic_opaque(NULL);
rd_kafka_msg_partitioner_random(NULL, NULL, 0, 0, NULL, NULL);
rd_kafka_msg_partitioner_consistent(NULL, NULL, 0, 0, NULL, NULL);
rd_kafka_msg_partitioner_consistent_random(NULL, NULL, 0, 0, NULL, NULL);
rd_kafka_new(0, NULL, NULL, 0);
rd_kafka_destroy(NULL);
rd_kafka_name(NULL);
rd_kafka_memberid(NULL);
rd_kafka_topic_new(NULL, NULL, NULL);
rd_kafka_topic_destroy(NULL);
rd_kafka_topic_name(NULL);
rd_kafka_message_destroy(NULL);
rd_kafka_message_errstr(NULL);
rd_kafka_message_timestamp(NULL, NULL);
rd_kafka_consume_start(NULL, 0, 0);
rd_kafka_consume_stop(NULL, 0);
rd_kafka_consume(NULL, 0, 0);
rd_kafka_consume_batch(NULL, 0, 0, NULL, 0);
rd_kafka_consume_callback(NULL, 0, 0, NULL, NULL);
rd_kafka_offset_store(NULL, 0, 0);
rd_kafka_produce(NULL, 0, 0, NULL, 0, NULL, 0, NULL);
rd_kafka_produce_batch(NULL, 0, 0, NULL, 0);
rd_kafka_poll(NULL, 0);
rd_kafka_brokers_add(NULL, NULL);
/* DEPRECATED: rd_kafka_set_logger(NULL, NULL); */
rd_kafka_set_log_level(NULL, 0);
rd_kafka_log_print(NULL, 0, NULL, NULL);
#ifndef _MSC_VER
rd_kafka_log_syslog(NULL, 0, NULL, NULL);
#endif
rd_kafka_outq_len(NULL);
rd_kafka_dump(NULL, NULL);
rd_kafka_thread_cnt();
rd_kafka_wait_destroyed(0);
rd_kafka_metadata(NULL, 0, NULL, NULL, 0);
rd_kafka_metadata_destroy(NULL);
rd_kafka_queue_destroy(NULL);
rd_kafka_consume_start_queue(NULL, 0, 0, NULL);
rd_kafka_consume_queue(NULL, 0);
rd_kafka_consume_batch_queue(NULL, 0, NULL, 0);
rd_kafka_consume_callback_queue(NULL, 0, NULL, NULL);
rd_kafka_seek(NULL, 0, 0, 0);
rd_kafka_yield(NULL);
rd_kafka_mem_free(NULL, NULL);
rd_kafka_list_groups(NULL, NULL, NULL, 0);
rd_kafka_group_list_destroy(NULL);
/* KafkaConsumer API */
rd_kafka_subscribe(NULL, NULL);
rd_kafka_unsubscribe(NULL);
rd_kafka_subscription(NULL, NULL);
rd_kafka_consumer_poll(NULL, 0);
rd_kafka_consumer_close(NULL);
rd_kafka_assign(NULL, NULL);
rd_kafka_assignment(NULL, NULL);
rd_kafka_commit(NULL, NULL, 0);
rd_kafka_commit_message(NULL, NULL, 0);
rd_kafka_committed(NULL, NULL, 0);
rd_kafka_position(NULL, NULL);
/* TopicPartition */
rd_kafka_topic_partition_list_new(0);
rd_kafka_topic_partition_list_destroy(NULL);
rd_kafka_topic_partition_list_add(NULL, NULL, 0);
rd_kafka_topic_partition_list_add_range(NULL, NULL, 0, 0);
rd_kafka_topic_partition_list_del(NULL, NULL, 0);
rd_kafka_topic_partition_list_del_by_idx(NULL, 0);
rd_kafka_topic_partition_list_copy(NULL);
rd_kafka_topic_partition_list_set_offset(NULL, NULL, 0, 0);
rd_kafka_topic_partition_list_find(NULL, NULL, 0);
rd_kafka_query_watermark_offsets(NULL, NULL, 0, NULL, NULL, 0);
rd_kafka_get_watermark_offsets(NULL, NULL, 0, NULL, NULL);
}
return 0;
}
int main (int argc, char **argv) {
rd_kafka_t *rk;
char *broker = NULL;
char mode = 'C';
char *topic = NULL;
int partition = 0;
int opt;
while ((opt = getopt(argc, argv, "PCt:p:b:")) != -1) {
switch (opt) {
case 'P':
case 'C':
mode = opt;
break;
case 't':
topic = optarg;
break;
case 'p':
partition = atoi(optarg);
break;
case 'b':
broker = optarg;
break;
default:
goto usage;
}
}
if (!topic || optind != argc) {
usage:
fprintf(stderr,
"Usage: %s [-C|-P] -t <topic> "
"[-p <partition>] [-b <broker>]\n"
"\n"
" Options:\n"
" -C | -P Consumer or Producer mode\n"
" -t <topic> Topic to fetch / produce\n"
" -p <num> Partition (defaults to 0)\n"
" -b <broker> Broker address (localhost:9092)\n"
"\n"
" In Consumer mode:\n"
" writes fetched messages to stdout\n"
" In Producer mode:\n"
" reads messages from stdin and sends to broker\n"
"\n",
argv[0]);
exit(1);
}
signal(SIGINT, stop);
if (mode == 'P') {
/*
* Producer
*/
char buf[2048];
int sendcnt = 0;
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_PRODUCER, broker, NULL))) {
perror("kafka_new producer");
exit(1);
}
fprintf(stderr, "%% Type stuff and hit enter to send\n");
while (run && (fgets(buf, sizeof(buf), stdin))) {
int len = strlen(buf);
char *opbuf = malloc(len + 1);
strncpy(opbuf, buf, len + 1);
/* Send/Produce message. */
rd_kafka_produce(rk, topic, partition, RD_KAFKA_OP_F_FREE, opbuf, len);
fprintf(stderr, "%% Sent %i bytes to topic "
"%s partition %i\n", len, topic, partition);
sendcnt++;
}
/* Wait for messaging to finish. */
while (rd_kafka_outq_len(rk) > 0)
usleep(50000);
/* Since there is no ack for produce messages in 0.7
* we wait some more for any packets to be sent.
* This is fixed in protocol version 0.8 */
if (sendcnt > 0)
usleep(500000);
/* Destroy the handle */
rd_kafka_destroy(rk);
} else if (mode == 'C') {
/*
* Consumer
*/
rd_kafka_op_t *rko;
/* Base our configuration on the default config. */
rd_kafka_conf_t conf = rd_kafka_defaultconf;
/* 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
* succesfully 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;
/* Use the consumer convenience function
* to create a Kafka handle. */
if (!(rk = rd_kafka_new_consumer(broker, topic,
(uint32_t)partition,
0, &conf))) {
perror("kafka_new_consumer");
exit(1);
}
while (run) {
/* Fetch an "op" which is one of:
* - a kafka message (if rko_len>0 && rko_err==0)
* - an error (if rko_err)
*/
if (!(rko = rd_kafka_consume(rk, 1000/*timeout ms*/)))
continue;
if (rko->rko_err)
fprintf(stderr, "%% Error: %.*s\n",
rko->rko_len, rko->rko_payload);
else if (rko->rko_len) {
fprintf(stderr, "%% Message with "
"next-offset %"PRIu64" is %i bytes\n",
rko->rko_offset, rko->rko_len);
hexdump(stdout, "Message",
rko->rko_payload, rko->rko_len);
}
/* rko_offset contains the offset of the _next_
* message. We store it when we're done processing
* the current message. */
if (rko->rko_offset)
rd_kafka_offset_store(rk, rko->rko_offset);
/* Destroy the op */
rd_kafka_op_destroy(rk, rko);
}
/* Destroy the handle */
rd_kafka_destroy(rk);
}
return 0;
}
void kafka_consume(zval* return_value, char* topic, char* offset, int item_count)
{
int read_counter = 0;
if (strlen(offset) != 0) {
if (!strcmp(offset, "end"))
start_offset = RD_KAFKA_OFFSET_END;
else if (!strcmp(offset, "beginning"))
start_offset = RD_KAFKA_OFFSET_BEGINNING;
else if (!strcmp(offset, "stored"))
start_offset = RD_KAFKA_OFFSET_STORED;
else
start_offset = strtoll(offset, NULL, 10);
}
rd_kafka_topic_t *rkt;
char errstr[512];
rd_kafka_conf_t *conf;
/* Kafka configuration */
conf = rd_kafka_conf_new();
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_CONSUMER, conf, errstr, sizeof(errstr)))) {
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "phpkafka - failed to create new consumer: %s", errstr);
exit(1);
}
/* Add brokers */
if (rd_kafka_brokers_add(rk, brokers) == 0) {
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "php kafka - No valid brokers specified");
exit(1);
}
rd_kafka_topic_conf_t *topic_conf;
/* Topic configuration */
topic_conf = rd_kafka_topic_conf_new();
/* Create topic */
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "phpkafka - start_offset: %d and offset passed: %d", start_offset, offset);
/* Start consuming */
if (rd_kafka_consume_start(rkt, partition, start_offset) == -1) {
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "phpkafka - %% Failed to start consuming: %s",
rd_kafka_err2str(rd_kafka_errno2err(errno)));
exit(1);
}
if (item_count != 0) {
read_counter = item_count;
}
while (run) {
if (item_count != 0 && read_counter >= 0) {
read_counter--;
openlog("phpkafka", 0, LOG_USER);
syslog(LOG_INFO, "phpkafka - read_counter: %d", read_counter);
if (read_counter == -1) {
run = 0;
continue;
}
}
rd_kafka_message_t *rkmessage;
/* Consume single message.
* See rdkafka_performance.c for high speed
* consuming of messages. */
rkmessage = rd_kafka_consume(rkt, partition, 1000);
if (!rkmessage) /* timeout */
continue;
rd_kafka_message_t *rkmessage_return;
rkmessage_return = msg_consume(rkmessage, NULL);
char payload[(int)rkmessage_return->len];
sprintf(payload, "%.*s", (int)rkmessage_return->len, (char *)rkmessage_return->payload);
add_index_string(return_value, (int)rkmessage_return->offset, payload, 1);
/* Return message to rdkafka */
rd_kafka_message_destroy(rkmessage);
}
/* Stop consuming */
rd_kafka_consume_stop(rkt, partition);
rd_kafka_topic_destroy(rkt);
rd_kafka_destroy(rk);
}
/**
* Returns offset of the last message consumed
*/
int64_t test_consume_msgs (const char *what, rd_kafka_topic_t *rkt,
uint64_t testid, int32_t partition, int64_t offset,
int exp_msg_base, int exp_cnt, int parse_fmt) {
int cnt = 0;
int msg_next = exp_msg_base;
int fails = 0;
int64_t offset_last = -1;
test_timing_t t_first, t_all;
TEST_SAY("%s: consume_msgs: %s [%"PRId32"]: expect msg #%d..%d "
"at offset %"PRId64"\n",
what, rd_kafka_topic_name(rkt), partition,
exp_msg_base, exp_cnt, offset);
if (offset != TEST_NO_SEEK) {
rd_kafka_resp_err_t err;
test_timing_t t_seek;
TIMING_START(&t_seek, "SEEK");
if ((err = rd_kafka_seek(rkt, partition, offset, 5000)))
TEST_FAIL("%s: consume_msgs: %s [%"PRId32"]: "
"seek to %"PRId64" failed: %s\n",
what, rd_kafka_topic_name(rkt), partition,
offset, rd_kafka_err2str(err));
TIMING_STOP(&t_seek);
TEST_SAY("%s: seeked to offset %"PRId64"\n", what, offset);
}
TIMING_START(&t_first, "FIRST MSG");
TIMING_START(&t_all, "ALL MSGS");
while (cnt < exp_cnt) {
rd_kafka_message_t *rkmessage;
int msg_id;
rkmessage = rd_kafka_consume(rkt, partition, 5000);
if (!rkmessage)
TEST_FAIL("%s: consume_msgs: %s [%"PRId32"]: "
"expected msg #%d (%d/%d): timed out\n",
what, rd_kafka_topic_name(rkt), partition,
msg_next, cnt, exp_cnt);
if (rkmessage->err)
TEST_FAIL("%s: consume_msgs: %s [%"PRId32"]: "
"expected msg #%d (%d/%d): got error: %s\n",
what, rd_kafka_topic_name(rkt), partition,
msg_next, cnt, exp_cnt,
rd_kafka_err2str(rkmessage->err));
if (cnt == 0)
TIMING_STOP(&t_first);
if (parse_fmt)
test_msg_parse(testid, rkmessage->key,
rkmessage->key_len, partition, &msg_id);
else
msg_id = 0;
if (test_level >= 3)
TEST_SAY("%s: consume_msgs: %s [%"PRId32"]: "
"got msg #%d at offset %"PRId64
" (expect #%d at offset %"PRId64")\n",
what, rd_kafka_topic_name(rkt), partition,
msg_id, rkmessage->offset,
msg_next,
offset >= 0 ? offset + cnt : -1);
if (parse_fmt && msg_id != msg_next) {
TEST_SAY("%s: consume_msgs: %s [%"PRId32"]: "
"expected msg #%d (%d/%d): got msg #%d\n",
what, rd_kafka_topic_name(rkt), partition,
msg_next, cnt, exp_cnt, msg_id);
fails++;
}
cnt++;
msg_next++;
offset_last = rkmessage->offset;
rd_kafka_message_destroy(rkmessage);
}
TIMING_STOP(&t_all);
if (fails)
TEST_FAIL("%s: consume_msgs: %s [%"PRId32"]: %d failures\n",
what, rd_kafka_topic_name(rkt), partition, fails);
TEST_SAY("%s: consume_msgs: %s [%"PRId32"]: "
"%d/%d messages consumed succesfully\n",
what, rd_kafka_topic_name(rkt), partition,
cnt, exp_cnt);
return offset_last;
}
int main (int argc, char **argv) {
rd_kafka_topic_t *rkt;
char *brokers = "localhost:9092";
char mode = 'C';
char *topic = NULL;
int partition = RD_KAFKA_PARTITION_UA;
int opt;
rd_kafka_conf_t *conf;
rd_kafka_topic_conf_t *topic_conf;
char errstr[512];
const char *debug = NULL;
int64_t start_offset = 0;
int report_offsets = 0;
int do_conf_dump = 0;
quiet = !isatty(STDIN_FILENO);
/* Kafka configuration */
conf = rd_kafka_conf_new();
/* Topic configuration */
topic_conf = rd_kafka_topic_conf_new();
while ((opt = getopt(argc, argv, "PCLt:p:b:z:qd:o:eX:A")) != -1) {
switch (opt) {
case 'P':
case 'C':
case 'L':
mode = opt;
break;
case 't':
topic = optarg;
break;
case 'p':
partition = atoi(optarg);
break;
case 'b':
brokers = 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);
}
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 if (!strcmp(optarg, "report"))
report_offsets = 1;
else
start_offset = strtoll(optarg, NULL, 10);
break;
case 'e':
exit_eof = 1;
break;
case 'd':
debug = optarg;
break;
case 'q':
quiet = 1;
break;
case 'A':
output = OUTPUT_RAW;
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);
}
if (!strcmp(optarg, "dump")) {
do_conf_dump = 1;
continue;
}
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;
default:
goto usage;
}
}
if (do_conf_dump) {
const char **arr;
size_t cnt;
int pass;
for (pass = 0 ; pass < 2 ; pass++) {
int i;
if (pass == 0) {
arr = rd_kafka_conf_dump(conf, &cnt);
printf("# Global config\n");
} else {
printf("# Topic config\n");
arr = rd_kafka_topic_conf_dump(topic_conf,
&cnt);
}
for (i = 0 ; i < cnt ; i += 2)
printf("%s = %s\n",
arr[i], arr[i+1]);
printf("\n");
rd_kafka_conf_dump_free(arr, cnt);
}
exit(0);
}
if (optind != argc || (mode != 'L' && !topic)) {
usage:
fprintf(stderr,
"Usage: %s -C|-P|-L -t <topic> "
"[-p <partition>] [-b <host1:port1,host2:port2,..>]\n"
"\n"
"librdkafka version %s (0x%08x)\n"
"\n"
" Options:\n"
" -C | -P Consumer or Producer mode\n"
" -L Metadata list mode\n"
" -t <topic> Topic to fetch / produce\n"
" -p <num> Partition (random partitioner)\n"
" -b <brokers> Broker address (localhost:9092)\n"
" -z <codec> Enable compression:\n"
" none|gzip|snappy\n"
" -o <offset> Start offset (consumer)\n"
" -o report Report message offsets (producer)\n"
" -e Exit consumer when last message\n"
" in partition has been received.\n"
" -d [facs..] Enable debugging contexts:\n"
" -q Be quiet\n"
" -A Raw payload output (consumer)\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"
"\n"
" In Consumer mode:\n"
" writes fetched messages to stdout\n"
" In Producer mode:\n"
" reads messages from stdin and sends to broker\n"
" In List mode:\n"
" queries broker for metadata information, "
"topic is optional.\n"
"\n"
"\n"
"\n",
argv[0],
rd_kafka_version_str(), rd_kafka_version(),
RD_KAFKA_DEBUG_CONTEXTS);
exit(1);
}
signal(SIGINT, stop);
signal(SIGUSR1, sig_usr1);
if (debug &&
rd_kafka_conf_set(conf, "debug", debug, errstr, sizeof(errstr)) !=
RD_KAFKA_CONF_OK) {
fprintf(stderr, "%% Debug configuration failed: %s: %s\n",
errstr, debug);
exit(1);
}
if (mode == 'P') {
/*
* Producer
*/
char buf[2048];
int sendcnt = 0;
/* Set up a message delivery report callback.
* It will be called once for each message, either on successful
* delivery to broker, or upon failure to deliver to broker. */
/* If offset reporting (-o report) is enabled, use the
* richer dr_msg_cb instead. */
if (report_offsets) {
rd_kafka_topic_conf_set(topic_conf,
"produce.offset.report",
"true", errstr, sizeof(errstr));
rd_kafka_conf_set_dr_msg_cb(conf, msg_delivered2);
} else
rd_kafka_conf_set_dr_cb(conf, msg_delivered);
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_PRODUCER, conf,
errstr, sizeof(errstr)))) {
fprintf(stderr,
"%% Failed to create new producer: %s\n",
errstr);
exit(1);
}
/* Set logger */
rd_kafka_set_logger(rk, logger);
rd_kafka_set_log_level(rk, LOG_DEBUG);
/* Add brokers */
if (rd_kafka_brokers_add(rk, brokers) == 0) {
fprintf(stderr, "%% No valid brokers specified\n");
exit(1);
}
/* Create topic */
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
if (!quiet)
fprintf(stderr,
"%% Type stuff and hit enter to send\n");
while (run && fgets(buf, sizeof(buf), stdin)) {
size_t len = strlen(buf);
if (buf[len-1] == '\n')
buf[--len] = '\0';
/* Send/Produce message. */
if (rd_kafka_produce(rkt, partition,
RD_KAFKA_MSG_F_COPY,
/* Payload and length */
buf, len,
/* Optional key and its length */
NULL, 0,
/* Message opaque, provided in
* delivery report callback as
* msg_opaque. */
NULL) == -1) {
fprintf(stderr,
"%% Failed to produce to topic %s "
"partition %i: %s\n",
rd_kafka_topic_name(rkt), partition,
rd_kafka_err2str(
rd_kafka_errno2err(errno)));
/* Poll to handle delivery reports */
rd_kafka_poll(rk, 0);
continue;
}
if (!quiet)
fprintf(stderr, "%% Sent %zd bytes to topic "
"%s partition %i\n",
len, rd_kafka_topic_name(rkt), partition);
sendcnt++;
/* Poll to handle delivery reports */
rd_kafka_poll(rk, 0);
}
/* Poll to handle delivery reports */
rd_kafka_poll(rk, 0);
/* Wait for messages to be delivered */
while (run && rd_kafka_outq_len(rk) > 0)
rd_kafka_poll(rk, 100);
/* Destroy the handle */
rd_kafka_destroy(rk);
} else if (mode == 'C') {
/*
* Consumer
*/
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_CONSUMER, conf,
errstr, sizeof(errstr)))) {
fprintf(stderr,
"%% Failed to create new consumer: %s\n",
errstr);
exit(1);
}
/* Set logger */
rd_kafka_set_logger(rk, logger);
rd_kafka_set_log_level(rk, LOG_DEBUG);
/* Add brokers */
if (rd_kafka_brokers_add(rk, brokers) == 0) {
fprintf(stderr, "%% No valid brokers specified\n");
exit(1);
}
/* Create topic */
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
/* Start consuming */
if (rd_kafka_consume_start(rkt, partition, start_offset) == -1){
fprintf(stderr, "%% Failed to start consuming: %s\n",
rd_kafka_err2str(rd_kafka_errno2err(errno)));
exit(1);
}
while (run) {
rd_kafka_message_t *rkmessage;
/* Consume single message.
* See rdkafka_performance.c for high speed
* consuming of messages. */
rkmessage = rd_kafka_consume(rkt, partition, 1000);
if (!rkmessage) /* timeout */
continue;
msg_consume(rkmessage, NULL);
/* Return message to rdkafka */
rd_kafka_message_destroy(rkmessage);
}
/* Stop consuming */
rd_kafka_consume_stop(rkt, partition);
rd_kafka_topic_destroy(rkt);
rd_kafka_destroy(rk);
} else if (mode == 'L') {
rd_kafka_resp_err_t err = RD_KAFKA_RESP_ERR_NO_ERROR;
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_PRODUCER, conf,
errstr, sizeof(errstr)))) {
fprintf(stderr,
"%% Failed to create new producer: %s\n",
errstr);
exit(1);
}
/* Set logger */
rd_kafka_set_logger(rk, logger);
rd_kafka_set_log_level(rk, LOG_DEBUG);
/* Add brokers */
if (rd_kafka_brokers_add(rk, brokers) == 0) {
fprintf(stderr, "%% No valid brokers specified\n");
exit(1);
}
/* Create topic */
if (topic)
rkt = rd_kafka_topic_new(rk, topic, topic_conf);
else
rkt = NULL;
while (run) {
const struct rd_kafka_metadata *metadata;
/* Fetch metadata */
err = rd_kafka_metadata(rk, rkt ? 0 : 1, rkt,
&metadata, 5000);
if (err != RD_KAFKA_RESP_ERR_NO_ERROR) {
fprintf(stderr,
"%% Failed to acquire metadata: %s\n",
rd_kafka_err2str(err));
run = 0;
break;
}
metadata_print(topic, metadata);
rd_kafka_metadata_destroy(metadata);
run = 0;
}
/* Destroy the handle */
rd_kafka_destroy(rk);
/* Exit right away, dont wait for background cleanup, we haven't
* done anything important anyway. */
exit(err ? 2 : 0);
}
/* Let background threads clean up and terminate cleanly. */
rd_kafka_wait_destroyed(2000);
return 0;
}
int main (int argc, char **argv) {
rd_kafka_t *rk;
char *broker = NULL;
int mode_p = 0;
int mode_c = 0;
char *topic;
int partition;
/* Command line argument option definition. */
rd_opt_t opts[] = {
{ RD_OPT_BOOL|RD_OPT_MUT1|RD_OPT_REQ, 'P', "produce",
0, &mode_p, "Run as producer" },
{ RD_OPT_BOOL|RD_OPT_MUT1|RD_OPT_REQ, 'C', "consume",
0, &mode_c, "Run as consumer" },
{ RD_OPT_STR|RD_OPT_REQ, 't', "topic", 1, &topic, "Topic" },
{ RD_OPT_INT|RD_OPT_REQ, 'p', "partition", 1, &partition,
"Partition" },
{ RD_OPT_STR, 'b', "broker", 1, &broker, "Broker host:port" },
{ RD_OPT_END },
};
/* Initialize librd */
rd_init();
/* Parse command line arguments. */
if (!rd_opt_get(opts, argc, argv, NULL, NULL))
exit(1);
signal(SIGINT, stop);
if (mode_p) {
/*
* Producer
*/
char buf[1024];
/* Create Kafka handle */
if (!(rk = rd_kafka_new(RD_KAFKA_PRODUCER, broker, NULL))) {
perror("kafka_new producer");
exit(1);
}
fprintf(stderr, "%% Type stuff and hit enter to send\n");
while (run && (fgets(buf, sizeof(buf), stdin))) {
int len = strlen(buf);
/* Send/Produce message. */
rd_kafka_produce(rk, topic, partition, 0, buf, len);
fprintf(stderr, "%% Sent %i bytes to topic "
"%s partition %i\n", len, topic, partition);
}
/* Destroy the handle */
rd_kafka_destroy(rk);
} else {
/*
* Consumer
*/
rd_kafka_op_t *rko;
/* Base our configuration on the default config. */
rd_kafka_conf_t conf = rd_kafka_defaultconf;
/* 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
* succesfully 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;
/* Use the consumer convenience function
* to create a Kafka handle. */
if (!(rk = rd_kafka_new_consumer(broker, topic,
(uint32_t)partition,
0, &conf))) {
perror("kafka_new_consumer");
exit(1);
}
while (run) {
/* Fetch an "op" which is one of:
* - a kafka message (if rko_len>0 && rko_err==0)
* - an error (if rko_err)
*/
if (!(rko = rd_kafka_consume(rk, 1000/*timeout ms*/)))
continue;
if (rko->rko_err)
fprintf(stderr, "%% Error: %.*s\n",
rko->rko_len, rko->rko_payload);
else if (rko->rko_len) {
fprintf(stderr, "%% Message with "
"next-offset %"PRIu64" is %i bytes\n",
rko->rko_offset, rko->rko_len);
rd_hexdump(stdout, "Message",
rko->rko_payload, rko->rko_len);
}
/* rko_offset contains the offset of the _next_
* message. We store it when we're done processing
* the current message. */
if (rko->rko_offset)
rd_kafka_offset_store(rk, rko->rko_offset);
/* Destroy the op */
rd_kafka_op_destroy(rk, rko);
}
/* Destroy the handle */
rd_kafka_destroy(rk);
}
return 0;
}
