Kafka::Kafka(std::string brokers, std::string topic)
{
std::string err_str;
m_partition = RdKafka::Topic::PARTITION_UA;
RdKafka::Conf *conf = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
RdKafka::Conf *tconf = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
conf->set("metadata.broker.list", brokers, err_str);
MyEventCb my_event_cb;
conf->set("event_cb", &my_event_cb, err_str);
MyDeliveryReportCb my_dr_cb;
conf->set("dr_cb", &my_dr_cb, err_str);
k_producer = RdKafka::Producer::create(conf, err_str);
if (!k_producer) {
std::cerr << "Failed to create producer: " << err_str << std::endl;
exit(1);
}
std::cout << "% Created producer " << k_producer->name() << std::endl;
k_topic = RdKafka::Topic::create(k_producer, topic, tconf, err_str);
if (!k_topic) {
std::cerr << "Failed to create topic: " << err_str << std::endl;
exit(1);
}
}
int main_0095_all_brokers_down (int argc, char **argv) {
RdKafka::Conf *conf;
std::string errstr;
Test::conf_init(&conf, NULL, 20);
/* Two broker addresses that will quickly reject the connection */
Test::conf_set(conf, "bootstrap.servers", "127.0.0.1:1,127.0.0.1:2");
/*
* First test producer
*/
errorEventCb pEvent = errorEventCb();
if (conf->set("event_cb", &pEvent, errstr) != RdKafka::Conf::CONF_OK)
Test::Fail(errstr);
Test::Say("Test Producer\n");
RdKafka::Producer *p = RdKafka::Producer::create(conf, errstr);
if (!p)
Test::Fail("Failed to create Producer: " + errstr);
/* Wait for all brokers down */
while (!pEvent.error_seen)
p->poll(1000);
delete p;
/*
* Test high-level consumer that has a logical broker (group coord),
* which has caused AllBrokersDown generation problems (#2259)
*/
errorEventCb cEvent = errorEventCb();
Test::conf_set(conf, "group.id", "test");
if (conf->set("event_cb", &cEvent, errstr) != RdKafka::Conf::CONF_OK)
Test::Fail(errstr);
Test::Say("Test KafkaConsumer\n");
RdKafka::KafkaConsumer *c = RdKafka::KafkaConsumer::create(conf, errstr);
if (!c)
Test::Fail("Failed to create KafkaConsumer: " + errstr);
/* Wait for all brokers down */
while (!cEvent.error_seen) {
RdKafka::Message *m = c->consume(1000);
if (m)
delete m;
}
c->close();
delete c;
return 0;
}
void KafkaLogProducer::configure(){
//todo: modified with configmanager
ConfigManager& configManager = ConfigManager::getInstance();
LogConfig* logConfig = (LogConfig*)configManager.get(CONFIG_LOG);
topicName = logConfig->kafkaTopic;
logKey = logConfig->kafkaKey;
std::string brokers = logConfig->kafkaBroker;
RdKafka::Conf *conf = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
RdKafka::Conf *tconf = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
std::string errstr;
RdKafka::Conf::ConfResult res;
if((res=conf->set("metadata.broker.list", brokers, errstr))!=RdKafka::Conf::CONF_OK ||
(res = conf->set("event_cb", &eventCb, errstr))!= RdKafka::Conf::CONF_OK ||
(res=conf->set("dr_cb", &drCb, errstr))!= RdKafka::Conf::CONF_OK ||
(res=conf->set("queue.buffering.max.messages",logConfig->kafkaMQMaxSize,errstr))!=RdKafka::Conf::CONF_OK||
(res=conf->set("message.send.max.retries","3",errstr))!= RdKafka::Conf::CONF_OK ||
(res=conf->set("retry.backoff.ms","500",errstr))!=RdKafka::Conf::CONF_OK){
LOG_ERROR<<"error occured when configuring kafka log producer,"<<errstr;
throw LogClientException(errstr,-1);
}
producer = RdKafka::Producer::create(conf, errstr);
if (!producer) {
LOG_ERROR<<"error occured when configuring kafka log producer" << errstr;
throw LogClientException(errstr,-1);
}
topic = RdKafka::Topic::create(producer, topicName, tconf, errstr);
if (!topic) {
LOG_ERROR<<"error occured when configuring kafka log producer" << errstr;
throw LogClientException(errstr,-1);
}
}
int main (int argc, char **argv) {
std::string brokers = "localhost";
std::string errstr;
std::vector<std::string> topics;
std::string conf_file;
std::string mode = "P";
int throughput = 0;
int32_t partition = RdKafka::Topic::PARTITION_UA;
bool do_conf_dump = false;
MyHashPartitionerCb hash_partitioner;
/*
* Create configuration objects
*/
RdKafka::Conf *conf = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
RdKafka::Conf *tconf = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
{
char hostname[128];
gethostname(hostname, sizeof(hostname)-1);
conf->set("client.id", std::string("rdkafka@") + hostname, errstr);
}
conf->set("debug", "cgrp,topic", errstr);
for (int i = 1 ; i < argc ; i++) {
const char *name = argv[i];
const char *val = i+1 < argc ? argv[i+1] : NULL;
if (val && !strncmp(val, "--", 2))
val = NULL;
std::cout << now() << ": argument: " << name << " " <<
(val?val:"") << std::endl;
if (val) {
if (!strcmp(name, "--topic"))
topics.push_back(val);
else if (!strcmp(name, "--broker-list"))
brokers = val;
else if (!strcmp(name, "--max-messages"))
state.maxMessages = atoi(val);
else if (!strcmp(name, "--throughput"))
throughput = atoi(val);
else if (!strcmp(name, "--producer.config") ||
!strcmp(name, "--consumer.config"))
read_conf_file(val);
else if (!strcmp(name, "--group-id"))
conf->set("group.id", val, errstr);
else if (!strcmp(name, "--session-timeout"))
conf->set("session.timeout.ms", val, errstr);
else if (!strcmp(name, "--reset-policy")) {
if (tconf->set("auto.offset.reset", val, errstr)) {
std::cerr << now() << ": " << errstr << std::endl;
exit(1);
}
} else if (!strcmp(name, "--debug")) {
conf->set("debug", val, errstr);
} else {
std::cerr << now() << ": Unknown option " << name << std::endl;
exit(1);
}
i++;
} else {
if (!strcmp(name, "--consumer"))
mode = "C";
else if (!strcmp(name, "--producer"))
mode = "P";
else if (!strcmp(name, "--enable-autocommit")) {
state.consumer.useAutoCommit = true;
conf->set("enable.auto.commit", "true", errstr);
} else {
std::cerr << now() << ": Unknown option or missing argument to " << name << std::endl;
exit(1);
}
}
}
if (topics.empty() || brokers.empty()) {
std::cerr << now() << ": Missing --topic and --broker-list" << std::endl;
exit(1);
}
/*
* Set configuration properties
*/
conf->set("metadata.broker.list", brokers, errstr);
ExampleEventCb ex_event_cb;
conf->set("event_cb", &ex_event_cb, errstr);
if (do_conf_dump) {
int pass;
for (pass = 0 ; pass < 2 ; pass++) {
std::list<std::string> *dump;
if (pass == 0) {
dump = conf->dump();
std::cerr << now() << ": # Global config" << std::endl;
} else {
dump = tconf->dump();
std::cerr << now() << ": # Topic config" << std::endl;
}
for (std::list<std::string>::iterator it = dump->begin();
it != dump->end(); ) {
std::cerr << *it << " = ";
it++;
std::cerr << *it << std::endl;
it++;
}
std::cerr << std::endl;
}
exit(0);
}
signal(SIGINT, sigterm);
signal(SIGTERM, sigterm);
signal(SIGALRM, sigwatchdog);
if (mode == "P") {
/*
* Producer mode
*/
ExampleDeliveryReportCb ex_dr_cb;
/* Set delivery report callback */
conf->set("dr_cb", &ex_dr_cb, errstr);
/*
* Create producer using accumulated global configuration.
*/
RdKafka::Producer *producer = RdKafka::Producer::create(conf, errstr);
if (!producer) {
std::cerr << now() << ": Failed to create producer: " << errstr << std::endl;
exit(1);
}
std::cerr << now() << ": % Created producer " << producer->name() << std::endl;
/*
* Create topic handle.
*/
RdKafka::Topic *topic = RdKafka::Topic::create(producer, topics[0],
tconf, errstr);
if (!topic) {
std::cerr << now() << ": Failed to create topic: " << errstr << std::endl;
exit(1);
}
static const int delay_us = throughput ? 1000000/throughput : 0;
if (state.maxMessages == -1)
state.maxMessages = 1000000; /* Avoid infinite produce */
for (int i = 0 ; run && i < state.maxMessages ; i++) {
/*
* Produce message
*/
std::ostringstream msg;
msg << i;
RdKafka::ErrorCode resp =
producer->produce(topic, partition,
RdKafka::Producer::RK_MSG_COPY /* Copy payload */,
const_cast<char *>(msg.str().c_str()),
msg.str().size(), NULL, NULL);
if (resp != RdKafka::ERR_NO_ERROR) {
errorString("producer_send_error",
RdKafka::err2str(resp), topic->name(), NULL, msg.str());
state.producer.numErr++;
} else {
std::cerr << now() << ": % Produced message (" <<
msg.str().size() << " bytes)" << std::endl;
state.producer.numSent++;
}
producer->poll(delay_us / 1000);
watchdog_kick();
}
run = true;
while (run && producer->outq_len() > 0) {
std::cerr << now() << ": Waiting for " << producer->outq_len() << std::endl;
producer->poll(50);
watchdog_kick();
}
std::cerr << now() << ": " << state.producer.numAcked << "/" <<
state.producer.numSent << "/" << state.maxMessages <<
" msgs acked/sent/max, " << state.producer.numErr <<
" errored" << std::endl;
delete topic;
delete producer;
} else if (mode == "C") {
/*
* Consumer mode
*/
tconf->set("auto.offset.reset", "smallest", errstr);
/* Set default topic config */
conf->set("default_topic_conf", tconf, errstr);
ExampleRebalanceCb ex_rebalance_cb;
conf->set("rebalance_cb", &ex_rebalance_cb, errstr);
ExampleOffsetCommitCb ex_offset_commit_cb;
conf->set("offset_commit_cb", &ex_offset_commit_cb, errstr);
/*
* Create consumer using accumulated global configuration.
*/
consumer = RdKafka::KafkaConsumer::create(conf, errstr);
if (!consumer) {
std::cerr << now() << ": Failed to create consumer: " <<
errstr << std::endl;
exit(1);
}
std::cerr << now() << ": % Created consumer " << consumer->name() <<
std::endl;
/*
* Subscribe to topic(s)
*/
RdKafka::ErrorCode resp = consumer->subscribe(topics);
if (resp != RdKafka::ERR_NO_ERROR) {
std::cerr << now() << ": Failed to subscribe to " << topics.size() << " topics: "
<< RdKafka::err2str(resp) << std::endl;
exit(1);
}
/*
* Consume messages
*/
while (run) {
RdKafka::Message *msg = consumer->consume(500);
msg_consume(consumer, msg, NULL);
delete msg;
watchdog_kick();
}
/* Final commit */
do_commit(consumer, 1);
/*
* Stop consumer
*/
consumer->close();
delete consumer;
}
/*
* Wait for RdKafka to decommission.
* This is not strictly needed (when check outq_len() above), but
* allows RdKafka to clean up all its resources before the application
* exits so that memory profilers such as valgrind wont complain about
* memory leaks.
*/
RdKafka::wait_destroyed(5000);
std::cerr << now() << ": EXITING WITH RETURN VALUE 0" << std::endl;
return 0;
}
int main (int argc, char **argv) {
std::string brokers = "localhost";
std::string errstr;
std::string topic_str;
std::string mode;
std::string debug;
std::vector<std::string> topics;
bool do_conf_dump = false;
int opt;
int use_ccb = 0;
/*
* Create configuration objects
*/
RdKafka::Conf *conf = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
RdKafka::Conf *tconf = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
ExampleRebalanceCb ex_rebalance_cb;
conf->set("rebalance_cb", &ex_rebalance_cb, errstr);
while ((opt = getopt(argc, argv, "g:b:z:qd:eX:AM:f:qv")) != -1) {
switch (opt) {
case 'g':
if (conf->set("group.id", optarg, errstr) != RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
break;
case 'b':
brokers = optarg;
break;
case 'z':
if (conf->set("compression.codec", optarg, errstr) !=
RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
break;
case 'e':
exit_eof = true;
break;
case 'd':
debug = optarg;
break;
case 'M':
if (conf->set("statistics.interval.ms", optarg, errstr) !=
RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
break;
case 'X':
{
char *name, *val;
if (!strcmp(optarg, "dump")) {
do_conf_dump = true;
continue;
}
name = optarg;
if (!(val = strchr(name, '='))) {
std::cerr << "%% Expected -X property=value, not " <<
name << std::endl;
exit(1);
}
*val = '\0';
val++;
/* Try "topic." prefixed properties on topic
* conf first, and then fall through to global if
* it didnt match a topic configuration property. */
RdKafka::Conf::ConfResult res = RdKafka::Conf::CONF_UNKNOWN;
if (!strncmp(name, "topic.", strlen("topic.")))
res = tconf->set(name+strlen("topic."), val, errstr);
if (res == RdKafka::Conf::CONF_UNKNOWN)
res = conf->set(name, val, errstr);
if (res != RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
}
break;
case 'f':
if (!strcmp(optarg, "ccb"))
use_ccb = 1;
else {
std::cerr << "Unknown option: " << optarg << std::endl;
exit(1);
}
break;
case 'q':
verbosity--;
break;
case 'v':
verbosity++;
break;
default:
goto usage;
}
}
for (; optind < argc ; optind++)
topics.push_back(std::string(argv[optind]));
if (topics.empty() || optind != argc) {
usage:
fprintf(stderr,
"Usage: %s -g <group-id> [options] topic1 topic2..\n"
"\n"
"librdkafka version %s (0x%08x)\n"
"\n"
" Options:\n"
" -g <group-id> Consumer group id\n"
" -b <brokers> Broker address (localhost:9092)\n"
" -z <codec> Enable compression:\n"
" none|gzip|snappy\n"
" -e Exit consumer when last message\n"
" in partition has been received.\n"
" -d [facs..] Enable debugging contexts:\n"
" %s\n"
" -M <intervalms> Enable statistics\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"
" -f <flag> Set option:\n"
" ccb - use consume_callback\n"
" -q Quiet / Decrease verbosity\n"
" -v Increase verbosity\n"
"\n"
"\n",
argv[0],
RdKafka::version_str().c_str(), RdKafka::version(),
RdKafka::get_debug_contexts().c_str());
exit(1);
}
/*
* Set configuration properties
*/
conf->set("metadata.broker.list", brokers, errstr);
if (!debug.empty()) {
if (conf->set("debug", debug, errstr) != RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
}
ExampleEventCb ex_event_cb;
conf->set("event_cb", &ex_event_cb, errstr);
conf->set("default_topic_conf", tconf, errstr);
delete tconf;
if (do_conf_dump) {
int pass;
for (pass = 0 ; pass < 2 ; pass++) {
std::list<std::string> *dump;
if (pass == 0) {
dump = conf->dump();
std::cout << "# Global config" << std::endl;
} else {
dump = tconf->dump();
std::cout << "# Topic config" << std::endl;
}
for (std::list<std::string>::iterator it = dump->begin();
it != dump->end(); ) {
std::cout << *it << " = ";
it++;
std::cout << *it << std::endl;
it++;
}
std::cout << std::endl;
}
exit(0);
}
signal(SIGINT, sigterm);
signal(SIGTERM, sigterm);
/*
* Consumer mode
*/
/*
* Create consumer using accumulated global configuration.
*/
RdKafka::KafkaConsumer *consumer = RdKafka::KafkaConsumer::create(conf, errstr);
if (!consumer) {
std::cerr << "Failed to create consumer: " << errstr << std::endl;
exit(1);
}
delete conf;
std::cout << "% Created consumer " << consumer->name() << std::endl;
/*
* Subscribe to topics
*/
RdKafka::ErrorCode err = consumer->subscribe(topics);
if (err) {
std::cerr << "Failed to subscribe to " << topics.size() << " topics: "
<< RdKafka::err2str(err) << std::endl;
exit(1);
}
/*
* Consume messages
*/
while (run) {
if (use_ccb) {
std::cerr << "Use callback: Not implemented" << std::endl;
break;
}
RdKafka::Message *msg = consumer->consume(1000);
msg_consume(msg, NULL);
delete msg;
}
alarm(10);
/*
* Stop consumer
*/
consumer->close();
delete consumer;
std::cerr << "% Consumed " << msg_cnt << " messages ("
<< msg_bytes << " bytes)" << std::endl;
/*
* Wait for RdKafka to decommission.
* This is not strictly needed (with check outq_len() above), but
* allows RdKafka to clean up all its resources before the application
* exits so that memory profilers such as valgrind wont complain about
* memory leaks.
*/
RdKafka::wait_destroyed(5000);
return 0;
}
int main (int argc, char **argv) {
std::string brokers = "localhost";
std::string errstr;
std::string topic_str;
std::string mode;
std::string debug;
int32_t partition = RdKafka::Topic::PARTITION_UA;
int64_t start_offset = RdKafka::Topic::OFFSET_BEGINNING;
bool do_conf_dump = false;
int opt;
MyHashPartitionerCb hash_partitioner;
int use_ccb = 0;
/*
* Create configuration objects
*/
RdKafka::Conf *conf = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
RdKafka::Conf *tconf = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
while ((opt = getopt(argc, argv, "PCLt:p:b:z:qd:o:eX:AM:f:")) != -1) {
switch (opt) {
case 'P':
case 'C':
case 'L':
mode = opt;
break;
case 't':
topic_str = optarg;
break;
case 'p':
if (!strcmp(optarg, "random"))
/* default */;
else if (!strcmp(optarg, "hash")) {
if (tconf->set("partitioner_cb", &hash_partitioner, errstr) !=
RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
} else
partition = std::atoi(optarg);
break;
case 'b':
brokers = optarg;
break;
case 'z':
if (conf->set("compression.codec", optarg, errstr) !=
RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
break;
case 'o':
if (!strcmp(optarg, "end"))
start_offset = RdKafka::Topic::OFFSET_END;
else if (!strcmp(optarg, "beginning"))
start_offset = RdKafka::Topic::OFFSET_BEGINNING;
else if (!strcmp(optarg, "stored"))
start_offset = RdKafka::Topic::OFFSET_STORED;
else
start_offset = strtoll(optarg, NULL, 10);
break;
case 'e':
exit_eof = true;
break;
case 'd':
debug = optarg;
break;
case 'M':
if (conf->set("statistics.interval.ms", optarg, errstr) !=
RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
break;
case 'X':
{
char *name, *val;
if (!strcmp(optarg, "dump")) {
do_conf_dump = true;
continue;
}
name = optarg;
if (!(val = strchr(name, '='))) {
std::cerr << "%% Expected -X property=value, not " <<
name << std::endl;
exit(1);
}
*val = '\0';
val++;
/* Try "topic." prefixed properties on topic
* conf first, and then fall through to global if
* it didnt match a topic configuration property. */
RdKafka::Conf::ConfResult res;
if (!strncmp(name, "topic.", strlen("topic.")))
res = tconf->set(name+strlen("topic."), val, errstr);
else
res = conf->set(name, val, errstr);
if (res != RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
}
break;
case 'f':
if (!strcmp(optarg, "ccb"))
use_ccb = 1;
else {
std::cerr << "Unknown option: " << optarg << std::endl;
exit(1);
}
break;
default:
goto usage;
}
}
if (mode.empty() || (topic_str.empty() && mode != "L") || optind != argc) {
usage:
std::string features;
conf->get("builtin.features", features);
fprintf(stderr,
"Usage: %s [-C|-P] -t <topic> "
"[-p <partition>] [-b <host1:port1,host2:port2,..>]\n"
"\n"
"librdkafka version %s (0x%08x, builtin.features \"%s\")\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"
" -p <func> Use partitioner:\n"
" random (default), hash\n"
" -b <brokers> Broker address (localhost:9092)\n"
" -z <codec> Enable compression:\n"
" none|gzip|snappy\n"
" -o <offset> Start offset (consumer)\n"
" -e Exit consumer when last message\n"
" in partition has been received.\n"
" -d [facs..] Enable debugging contexts:\n"
" %s\n"
" -M <intervalms> Enable statistics\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"
" -f <flag> Set option:\n"
" ccb - use consume_callback\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"
"\n"
"\n",
argv[0],
RdKafka::version_str().c_str(), RdKafka::version(),
features.c_str(),
RdKafka::get_debug_contexts().c_str());
exit(1);
}
/*
* Set configuration properties
*/
conf->set("metadata.broker.list", brokers, errstr);
if (!debug.empty()) {
if (conf->set("debug", debug, errstr) != RdKafka::Conf::CONF_OK) {
std::cerr << errstr << std::endl;
exit(1);
}
}
ExampleEventCb ex_event_cb;
conf->set("event_cb", &ex_event_cb, errstr);
if (do_conf_dump) {
int pass;
for (pass = 0 ; pass < 2 ; pass++) {
std::list<std::string> *dump;
if (pass == 0) {
dump = conf->dump();
std::cout << "# Global config" << std::endl;
} else {
dump = tconf->dump();
std::cout << "# Topic config" << std::endl;
}
for (std::list<std::string>::iterator it = dump->begin();
it != dump->end(); ) {
std::cout << *it << " = ";
it++;
std::cout << *it << std::endl;
it++;
}
std::cout << std::endl;
}
exit(0);
}
signal(SIGINT, sigterm);
signal(SIGTERM, sigterm);
if (mode == "P") {
/*
* Producer mode
*/
if(topic_str.empty())
goto usage;
ExampleDeliveryReportCb ex_dr_cb;
/* Set delivery report callback */
conf->set("dr_cb", &ex_dr_cb, errstr);
/*
* Create producer using accumulated global configuration.
*/
RdKafka::Producer *producer = RdKafka::Producer::create(conf, errstr);
if (!producer) {
std::cerr << "Failed to create producer: " << errstr << std::endl;
exit(1);
}
std::cout << "% Created producer " << producer->name() << std::endl;
/*
* Create topic handle.
*/
RdKafka::Topic *topic = RdKafka::Topic::create(producer, topic_str,
tconf, errstr);
if (!topic) {
std::cerr << "Failed to create topic: " << errstr << std::endl;
exit(1);
}
/*
* Read messages from stdin and produce to broker.
*/
for (std::string line; run && std::getline(std::cin, line);) {
if (line.empty()) {
producer->poll(0);
continue;
}
/*
* Produce message
*/
RdKafka::ErrorCode resp =
producer->produce(topic, partition,
RdKafka::Producer::RK_MSG_COPY /* Copy payload */,
const_cast<char *>(line.c_str()), line.size(),
NULL, NULL);
if (resp != RdKafka::ERR_NO_ERROR)
std::cerr << "% Produce failed: " <<
RdKafka::err2str(resp) << std::endl;
else
std::cerr << "% Produced message (" << line.size() << " bytes)" <<
std::endl;
producer->poll(0);
}
run = true;
while (run && producer->outq_len() > 0) {
std::cerr << "Waiting for " << producer->outq_len() << std::endl;
producer->poll(1000);
}
delete topic;
delete producer;
} else if (mode == "C") {
/*
* Consumer mode
*/
if(topic_str.empty())
goto usage;
/*
* Create consumer using accumulated global configuration.
*/
RdKafka::Consumer *consumer = RdKafka::Consumer::create(conf, errstr);
if (!consumer) {
std::cerr << "Failed to create consumer: " << errstr << std::endl;
exit(1);
}
std::cout << "% Created consumer " << consumer->name() << std::endl;
/*
* Create topic handle.
*/
RdKafka::Topic *topic = RdKafka::Topic::create(consumer, topic_str,
tconf, errstr);
if (!topic) {
std::cerr << "Failed to create topic: " << errstr << std::endl;
exit(1);
}
/*
* Start consumer for topic+partition at start offset
*/
RdKafka::ErrorCode resp = consumer->start(topic, partition, start_offset);
if (resp != RdKafka::ERR_NO_ERROR) {
std::cerr << "Failed to start consumer: " <<
RdKafka::err2str(resp) << std::endl;
exit(1);
}
ExampleConsumeCb ex_consume_cb;
/*
* Consume messages
*/
while (run) {
if (use_ccb) {
consumer->consume_callback(topic, partition, 1000,
&ex_consume_cb, &use_ccb);
} else {
RdKafka::Message *msg = consumer->consume(topic, partition, 1000);
msg_consume(msg, NULL);
delete msg;
}
consumer->poll(0);
}
/*
* Stop consumer
*/
consumer->stop(topic, partition);
consumer->poll(1000);
delete topic;
delete consumer;
} else {
/* Metadata mode */
/*
* Create producer using accumulated global configuration.
*/
RdKafka::Producer *producer = RdKafka::Producer::create(conf, errstr);
if (!producer) {
std::cerr << "Failed to create producer: " << errstr << std::endl;
exit(1);
}
std::cout << "% Created producer " << producer->name() << std::endl;
/*
* Create topic handle.
*/
RdKafka::Topic *topic = NULL;
if(!topic_str.empty()) {
topic = RdKafka::Topic::create(producer, topic_str, tconf, errstr);
if (!topic) {
std::cerr << "Failed to create topic: " << errstr << std::endl;
exit(1);
}
}
while (run) {
class RdKafka::Metadata *metadata;
/* Fetch metadata */
RdKafka::ErrorCode err = producer->metadata(topic!=NULL, topic,
&metadata, 5000);
if (err != RdKafka::ERR_NO_ERROR) {
std::cerr << "%% Failed to acquire metadata: "
<< RdKafka::err2str(err) << std::endl;
run = 0;
break;
}
metadata_print(topic_str, metadata);
delete metadata;
run = 0;
}
}
/*
* Wait for RdKafka to decommission.
* This is not strictly needed (when check outq_len() above), but
* allows RdKafka to clean up all its resources before the application
* exits so that memory profilers such as valgrind wont complain about
* memory leaks.
*/
RdKafka::wait_destroyed(5000);
return 0;
}
void Consumer::ensureSetup()
{
if (!topicPtr.load(std::memory_order_acquire))
{
CriticalBlock block(lock);
if (!topicPtr.load(std::memory_order_relaxed))
{
initFileOffsetIfNotExist();
std::string errStr;
RdKafka::Conf* globalConfig = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
if (globalConfig)
{
// Set global configuration parameters, used mainly at the consumer level
globalConfig->set("metadata.broker.list", brokers, errStr);
globalConfig->set("compression.codec", "snappy", errStr);
globalConfig->set("queued.max.messages.kbytes", "10000000", errStr);
globalConfig->set("fetch.message.max.bytes", "10000000", errStr);
// Set any global configurations from file, allowing
// overrides of above settings
applyConfig("kafka_global.conf", globalConfig, traceLevel);
// Set consumer callbacks
globalConfig->set("event_cb", static_cast<RdKafka::EventCb*>(this), errStr);
// Create the consumer
consumerPtr = RdKafka::Consumer::create(globalConfig, errStr);
if (consumerPtr)
{
RdKafka::Conf* topicConfPtr = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
// Set the per-topic configuration parameters
topicConfPtr->set("group.id", consumerGroup, errStr);
topicConfPtr->set("auto.offset.reset", "smallest", errStr);
// Set any topic configurations from file, allowing
// overrides of above settings
std::string confName = "kafka_consumer_topic_" + topic + ".conf";
applyConfig(confName.c_str(), topicConfPtr, traceLevel);
// Ensure that some items are set a certain way
// by setting them after loading the external conf
topicConfPtr->set("auto.commit.enable", "false", errStr);
// Create the topic
topicPtr.store(RdKafka::Topic::create(consumerPtr, topic, topicConfPtr, errStr), std::memory_order_release);
if (!topicPtr)
{
throw MakeStringException(-1, "Kafka: Unable to create consumer topic object for topic '%s'; error: '%s'", topic.c_str(), errStr.c_str());
}
}
else
{
throw MakeStringException(-1, "Kafka: Unable to create consumer object for brokers '%s'; error: '%s'", brokers.c_str(), errStr.c_str());
}
}
else
{
throw MakeStringException(-1, "Kafka: Unable to create consumer global configuration object for brokers '%s'; error: '%s'", brokers.c_str(), errStr.c_str());
}
}
}
}
void Publisher::ensureSetup()
{
if (!topicPtr.load(std::memory_order_acquire))
{
CriticalBlock block(lock);
if (!topicPtr.load(std::memory_order_relaxed))
{
std::string errStr;
RdKafka::Conf* globalConfig = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL);
if (globalConfig)
{
// Set global configuration parameters, used mainly at the producer level
globalConfig->set("metadata.broker.list", brokers, errStr);
globalConfig->set("queue.buffering.max.messages", "1000000", errStr);
globalConfig->set("compression.codec", "snappy", errStr);
globalConfig->set("message.send.max.retries", "3", errStr);
globalConfig->set("retry.backoff.ms", "500", errStr);
// Set any global configurations from file, allowing
// overrides of above settings
applyConfig("kafka_global.conf", globalConfig, traceLevel);
// Set producer callbacks
globalConfig->set("event_cb", static_cast<RdKafka::EventCb*>(this), errStr);
globalConfig->set("dr_cb", static_cast<RdKafka::DeliveryReportCb*>(this), errStr);
// Create the producer
producerPtr = RdKafka::Producer::create(globalConfig, errStr);
if (producerPtr)
{
RdKafka::Conf* topicConfPtr = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC);
// Set any topic configurations from file
std::string confName = "kafka_publisher_topic_" + topic + ".conf";
applyConfig(confName.c_str(), topicConfPtr, traceLevel);
// Create the topic
topicPtr.store(RdKafka::Topic::create(producerPtr, topic, topicConfPtr, errStr), std::memory_order_release);
if (topicPtr)
{
// Start the attached background poller
pollerPtr->start();
}
else
{
throw MakeStringException(-1, "Kafka: Unable to create producer topic object for topic '%s'; error: '%s'", topic.c_str(), errStr.c_str());
}
}
else
{
throw MakeStringException(-1, "Kafka: Unable to create producer object for brokers '%s'; error: '%s'", brokers.c_str(), errStr.c_str());
}
}
else
{
throw MakeStringException(-1, "Kafka: Unable to create producer global configuration object for brokers '%s'; error: '%s'", brokers.c_str(), errStr.c_str());
}
}
}
}
/**
* Generate unique topic name (there is a C function for that in test.h wihch you should use)
* Query metadata for that topic
* Wait one second
* Query again, it should now have isrs and everything
*/
static void test_metadata_cpp (void) {
RdKafka::Conf *conf = RdKafka::Conf::create(RdKafka::Conf::CONF_GLOBAL); /* @TODO: Do we need to merge with C test_conf_init()? */
RdKafka::Conf *tconf = RdKafka::Conf::create(RdKafka::Conf::CONF_TOPIC); /* @TODO: Same of prev */
RdKafka::Metadata *metadata;
RdKafka::ErrorCode err;
int msgcnt = 10000;
int partition_cnt = 2;
int i;
uint64_t testid;
int msg_base = 0;
std::string errstr;
const char *topic_str = test_mk_topic_name("0013", 1);
/* if(!topic){
TEST_FAIL()
}*/
//const RdKafka::Conf::ConfResult confResult = conf->set("debug","all",errstr);
//if(confResult != RdKafka::Conf::CONF_OK){
// std::stringstream errstring;
// errstring << "Can't set config" << errstr;
// TEST_FAIL(errstring.str().c_str());
//}
TEST_SAY("Topic %s.\n", topic_str);
const RdKafka::Conf::ConfResult confBrokerResult = conf->set("metadata.broker.list", "localhost:9092", errstr);
if(confBrokerResult != RdKafka::Conf::CONF_OK){
std::stringstream errstring;
errstring << "Can't set broker" << errstr;
TEST_FAIL(errstring.str().c_str());
}
/* Create a producer to fetch metadata */
RdKafka::Producer *producer = RdKafka::Producer::create(conf, errstr);
if (!producer) {
std::stringstream errstring;
errstring << "Can't create producer" << errstr;
TEST_FAIL(errstring.str().c_str());
}
/*
* Create topic handle.
*/
RdKafka::Topic *topic = NULL;
topic = RdKafka::Topic::create(producer, topic_str, tconf, errstr);
if (!topic) {
std::stringstream errstring;
errstring << "Can't create topic" << errstr;
exit(1);
}
/* First request of metadata: It have to fail */
err = producer->metadata(topic!=NULL, topic,
&metadata, 5000);
if (err != RdKafka::ERR_NO_ERROR) {
std::stringstream errstring;
errstring << "Can't request first metadata: " << errstr;
TEST_FAIL(errstring.str().c_str());
}
/* It's a new topic, it should have no partitions */
if(metadata->topics()->at(0)->partitions()->size() != 0){
TEST_FAIL("ISRS != 0");
}
sleep(1);
/* Second request of metadata: It have to success */
err = producer->metadata(topic!=NULL, topic,
&metadata, 5000);
/* It should have now partitions */
if(metadata->topics()->at(0)->partitions()->size() == 0){
TEST_FAIL("ISRS == 0");
}
delete topic;
delete producer;
delete tconf;
delete conf;
/* Wait for everything to be cleaned up since broker destroys are
* handled in its own thread. */
test_wait_exit(10);
/* If we havent failed at this point then
* there were no threads leaked */
return;
}
static void do_test_consumer_lag (void) {
const int msgcnt = 10;
std::string errstr;
RdKafka::ErrorCode err;
topic = Test::mk_topic_name("0061-consumer_lag", 1);
test_produce_msgs_easy(topic.c_str(), 0, 0, msgcnt);
/*
* Create consumer
*/
/* Create consumer */
RdKafka::Conf *conf;
Test::conf_init(&conf, NULL, 10);
StatsCb stats;
if (conf->set("event_cb", &stats, errstr) != RdKafka::Conf::CONF_OK)
Test::Fail("set event_cb failed: " + errstr);
Test::conf_set(conf, "group.id", topic);
Test::conf_set(conf, "enable.auto.commit", "false");
Test::conf_set(conf, "enable.partition.eof", "false");
Test::conf_set(conf, "auto.offset.reset", "earliest");
Test::conf_set(conf, "statistics.interval.ms", "100");
RdKafka::KafkaConsumer *c = RdKafka::KafkaConsumer::create(conf, errstr);
if (!c)
Test::Fail("Failed to create KafkaConsumer: " + errstr);
delete conf;
/* Assign partitions */
/* Subscribe */
std::vector<RdKafka::TopicPartition*> parts;
parts.push_back(RdKafka::TopicPartition::create(topic, 0));
if ((err = c->assign(parts)))
Test::Fail("assign failed: " + RdKafka::err2str(err));
RdKafka::TopicPartition::destroy(parts);
/* Start consuming */
Test::Say("Consuming topic " + topic + "\n");
int cnt = 0;
while (cnt < msgcnt) {
RdKafka::Message *msg = c->consume(tmout_multip(1000));
switch (msg->err())
{
case RdKafka::ERR__TIMED_OUT:
break;
case RdKafka::ERR__PARTITION_EOF:
Test::Fail(tostr() << "Consume error after " << cnt << "/" << msgcnt << " messages: " << msg->errstr());
break;
case RdKafka::ERR_NO_ERROR:
/* Proper message. Update calculated lag for later
* checking in stats callback */
stats.calc_lag = msgcnt - (msg->offset()+1);
cnt++;
Test::Say(2, tostr() << "Received message #" << cnt << "/" << msgcnt <<
" at offset " << msg->offset() << " (calc lag " << stats.calc_lag << ")\n");
/* Slow down message "processing" to make sure we get
* at least one stats callback per message. */
if (cnt < msgcnt)
rd_sleep(1);
break;
default:
Test::Fail("Consume error: " + msg->errstr());
break;
}
delete msg;
}
Test::Say(tostr() << "Done, lag was valid " <<
stats.lag_valid << " times\n");
if (stats.lag_valid == 0)
Test::Fail("No valid consumer_lag in statistics seen");
c->close();
delete c;
}
void kafka_writer::set_brokers(std::string brokers) {
std::string errstr;
conf->set("metadata.broker.list", brokers, errstr);
}