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Posted to commits@nifi.apache.org by bq...@apache.org on 2017/11/16 21:16:07 UTC
[37/42] nifi-minifi-cpp git commit: MINIFICPP-274: PutKafka Processor
http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/9f66960e/thirdparty/librdkafka-0.11.1/examples/rdkafka_example.cpp
----------------------------------------------------------------------
diff --git a/thirdparty/librdkafka-0.11.1/examples/rdkafka_example.cpp b/thirdparty/librdkafka-0.11.1/examples/rdkafka_example.cpp
new file mode 100644
index 0000000..30d0d0e
--- /dev/null
+++ b/thirdparty/librdkafka-0.11.1/examples/rdkafka_example.cpp
@@ -0,0 +1,645 @@
+/*
+ * librdkafka - Apache Kafka C library
+ *
+ * Copyright (c) 2014, Magnus Edenhill
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * Apache Kafka consumer & producer example programs
+ * using the Kafka driver from librdkafka
+ * (https://github.com/edenhill/librdkafka)
+ */
+
+#include <iostream>
+#include <string>
+#include <cstdlib>
+#include <cstdio>
+#include <csignal>
+#include <cstring>
+
+#ifdef _MSC_VER
+#include "../win32/wingetopt.h"
+#elif _AIX
+#include <unistd.h>
+#else
+#include <getopt.h>
+#endif
+
+/*
+ * Typically include path in a real application would be
+ * #include <librdkafka/rdkafkacpp.h>
+ */
+#include "rdkafkacpp.h"
+
+
+static void metadata_print (const std::string &topic,
+ const RdKafka::Metadata *metadata) {
+ std::cout << "Metadata for " << (topic.empty() ? "" : "all topics")
+ << "(from broker " << metadata->orig_broker_id()
+ << ":" << metadata->orig_broker_name() << std::endl;
+
+ /* Iterate brokers */
+ std::cout << " " << metadata->brokers()->size() << " brokers:" << std::endl;
+ RdKafka::Metadata::BrokerMetadataIterator ib;
+ for (ib = metadata->brokers()->begin();
+ ib != metadata->brokers()->end();
+ ++ib) {
+ std::cout << " broker " << (*ib)->id() << " at "
+ << (*ib)->host() << ":" << (*ib)->port() << std::endl;
+ }
+ /* Iterate topics */
+ std::cout << metadata->topics()->size() << " topics:" << std::endl;
+ RdKafka::Metadata::TopicMetadataIterator it;
+ for (it = metadata->topics()->begin();
+ it != metadata->topics()->end();
+ ++it) {
+ std::cout << " topic \""<< (*it)->topic() << "\" with "
+ << (*it)->partitions()->size() << " partitions:";
+
+ if ((*it)->err() != RdKafka::ERR_NO_ERROR) {
+ std::cout << " " << err2str((*it)->err());
+ if ((*it)->err() == RdKafka::ERR_LEADER_NOT_AVAILABLE)
+ std::cout << " (try again)";
+ }
+ std::cout << std::endl;
+
+ /* Iterate topic's partitions */
+ RdKafka::TopicMetadata::PartitionMetadataIterator ip;
+ for (ip = (*it)->partitions()->begin();
+ ip != (*it)->partitions()->end();
+ ++ip) {
+ std::cout << " partition " << (*ip)->id()
+ << ", leader " << (*ip)->leader()
+ << ", replicas: ";
+
+ /* Iterate partition's replicas */
+ RdKafka::PartitionMetadata::ReplicasIterator ir;
+ for (ir = (*ip)->replicas()->begin();
+ ir != (*ip)->replicas()->end();
+ ++ir) {
+ std::cout << (ir == (*ip)->replicas()->begin() ? "":",") << *ir;
+ }
+
+ /* Iterate partition's ISRs */
+ std::cout << ", isrs: ";
+ RdKafka::PartitionMetadata::ISRSIterator iis;
+ for (iis = (*ip)->isrs()->begin(); iis != (*ip)->isrs()->end() ; ++iis)
+ std::cout << (iis == (*ip)->isrs()->begin() ? "":",") << *iis;
+
+ if ((*ip)->err() != RdKafka::ERR_NO_ERROR)
+ std::cout << ", " << RdKafka::err2str((*ip)->err()) << std::endl;
+ else
+ std::cout << std::endl;
+ }
+ }
+}
+
+static bool run = true;
+static bool exit_eof = false;
+
+static void sigterm (int sig) {
+ run = false;
+}
+
+
+class ExampleDeliveryReportCb : public RdKafka::DeliveryReportCb {
+ public:
+ void dr_cb (RdKafka::Message &message) {
+ std::cout << "Message delivery for (" << message.len() << " bytes): " <<
+ message.errstr() << std::endl;
+ if (message.key())
+ std::cout << "Key: " << *(message.key()) << ";" << std::endl;
+ }
+};
+
+
+class ExampleEventCb : public RdKafka::EventCb {
+ public:
+ void event_cb (RdKafka::Event &event) {
+ switch (event.type())
+ {
+ case RdKafka::Event::EVENT_ERROR:
+ std::cerr << "ERROR (" << RdKafka::err2str(event.err()) << "): " <<
+ event.str() << std::endl;
+ if (event.err() == RdKafka::ERR__ALL_BROKERS_DOWN)
+ run = false;
+ break;
+
+ case RdKafka::Event::EVENT_STATS:
+ std::cerr << "\"STATS\": " << event.str() << std::endl;
+ break;
+
+ case RdKafka::Event::EVENT_LOG:
+ fprintf(stderr, "LOG-%i-%s: %s\n",
+ event.severity(), event.fac().c_str(), event.str().c_str());
+ break;
+
+ default:
+ std::cerr << "EVENT " << event.type() <<
+ " (" << RdKafka::err2str(event.err()) << "): " <<
+ event.str() << std::endl;
+ break;
+ }
+ }
+};
+
+
+/* Use of this partitioner is pretty pointless since no key is provided
+ * in the produce() call. */
+class MyHashPartitionerCb : public RdKafka::PartitionerCb {
+ public:
+ int32_t partitioner_cb (const RdKafka::Topic *topic, const std::string *key,
+ int32_t partition_cnt, void *msg_opaque) {
+ return djb_hash(key->c_str(), key->size()) % partition_cnt;
+ }
+ private:
+
+ static inline unsigned int djb_hash (const char *str, size_t len) {
+ unsigned int hash = 5381;
+ for (size_t i = 0 ; i < len ; i++)
+ hash = ((hash << 5) + hash) + str[i];
+ return hash;
+ }
+};
+
+void msg_consume(RdKafka::Message* message, void* opaque) {
+ switch (message->err()) {
+ case RdKafka::ERR__TIMED_OUT:
+ break;
+
+ case RdKafka::ERR_NO_ERROR:
+ /* Real message */
+ std::cout << "Read msg at offset " << message->offset() << std::endl;
+ if (message->key()) {
+ std::cout << "Key: " << *message->key() << std::endl;
+ }
+ printf("%.*s\n",
+ static_cast<int>(message->len()),
+ static_cast<const char *>(message->payload()));
+ break;
+
+ case RdKafka::ERR__PARTITION_EOF:
+ /* Last message */
+ if (exit_eof) {
+ run = false;
+ }
+ break;
+
+ case RdKafka::ERR__UNKNOWN_TOPIC:
+ case RdKafka::ERR__UNKNOWN_PARTITION:
+ std::cerr << "Consume failed: " << message->errstr() << std::endl;
+ run = false;
+ break;
+
+ default:
+ /* Errors */
+ std::cerr << "Consume failed: " << message->errstr() << std::endl;
+ run = false;
+ }
+}
+
+
+class ExampleConsumeCb : public RdKafka::ConsumeCb {
+ public:
+ void consume_cb (RdKafka::Message &msg, void *opaque) {
+ msg_consume(&msg, opaque);
+ }
+};
+
+
+
+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;
+}
http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/9f66960e/thirdparty/librdkafka-0.11.1/examples/rdkafka_performance.c
----------------------------------------------------------------------
diff --git a/thirdparty/librdkafka-0.11.1/examples/rdkafka_performance.c b/thirdparty/librdkafka-0.11.1/examples/rdkafka_performance.c
new file mode 100644
index 0000000..34294d8
--- /dev/null
+++ b/thirdparty/librdkafka-0.11.1/examples/rdkafka_performance.c
@@ -0,0 +1,1561 @@
+/*
+ * librdkafka - Apache Kafka C library
+ *
+ * Copyright (c) 2012, Magnus Edenhill
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * Apache Kafka consumer & producer performance tester
+ * using the Kafka driver from librdkafka
+ * (https://github.com/edenhill/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 _MSC_VER
+#include "../win32/wingetopt.h"
+#include "../win32/wintime.h"
+#endif
+
+
+static int 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 int report_offset = 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 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) {
+ 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: %s [%"PRId32"]: "
+ "%s (%li remain)\n",
+ 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"): "
+ "%li remain\n",
+ rkmessage->offset, msgs_wait_cnt);
+ if (verbosity >= 3 && do_seq)
+ printf(" --> \"%.*s\"\n",
+ (int)rkmessage->len,
+ (const char *)rkmessage->payload);
+ last = now;
+ }
+
+ if (report_offset)
+ cnt.last_offset = rkmessage->offset;
+
+ if (msgs_wait_produce_cnt == 0 && msgs_wait_cnt == 0 && !forever) {
+ if (verbosity >= 2)
+ printf("All messages delivered!\n");
+ 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 (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) {
+
+ switch (err)
+ {
+ case RD_KAFKA_RESP_ERR__ASSIGN_PARTITIONS:
+ fprintf(stderr,
+ "%% Group rebalanced: %d partition(s) assigned\n",
+ partitions->cnt);
+ eof_cnt = 0;
+ partition_cnt = partitions->cnt;
+ rd_kafka_assign(rk, partitions);
+ break;
+
+ case RD_KAFKA_RESP_ERR__REVOKE_PARTITIONS:
+ fprintf(stderr,
+ "%% Group rebalanced: %d partition(s) revoked\n",
+ partitions->cnt);
+ eof_cnt = 0;
+ partition_cnt = 0;
+ rd_kafka_assign(rk, NULL);
+ break;
+
+ default:
+ break;
+ }
+}
+
+
+/**
+ * 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");
+ if (report_offset)
+ 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);
+ if (report_offset)
+ 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,
+ rd_kafka_topic_conf_t *tconf, 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 property on topic config first */
+ if (tconf)
+ r = rd_kafka_topic_conf_set(tconf, s, t,
+ errstr, sizeof(errstr));
+
+ /* Try global config */
+ if (r == RD_KAFKA_CONF_UNKNOWN)
+ 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;
+}
+
+
+
+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 = (int)strlen(msgpattern);
+ const char *debug = NULL;
+ 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_topic_conf_t *topic_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;
+
+ /* 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, "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);
+ rd_kafka_conf_set(conf, "session.timeout.ms", "6000", NULL, 0);
+
+ /* Kafka topic configuration */
+ topic_conf = rd_kafka_topic_conf_new();
+ rd_kafka_topic_conf_set(topic_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:OwN")) != -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_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':
+ 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 '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++;
+
+ if (!strcmp(name, "file")) {
+ if (read_conf_file(conf, topic_conf, val) == -1)
+ exit(1);
+ break;
+ }
+
+ 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':
+ stats_intvlstr = optarg;
+ break;
+ case 'Y':
+ stats_cmd = optarg;
+ break;
+
+ case 'q':
+ verbosity--;
+ break;
+
+ case 'v':
+ verbosity++;
+ break;
+
+ case 'I':
+ idle = 1;
+ break;
+
+ case 'u':
+ otype = _OTYPE_TAB;
+ verbosity--; /* remove some fluff */
+ break;
+
+ case 'r':
+ dtmp = strtod(optarg, &tmp2);
+ if (tmp2 == optarg ||
+ (dtmp >= -0.001 && dtmp <= 0.001)) {
+ fprintf(stderr, "%% Invalid rate: %s\n",
+ optarg);
+ exit(1);
+ }
+
+ rate_sleep = (int)(1000000.0 / dtmp);
+ break;
+
+ case 'l':
+ latency_mode = 1;
+ break;
+
+ case 'A':
+ if (!(latency_fp = fopen(optarg, "w"))) {
+ fprintf(stderr,
+ "%% Cant open %s: %s\n",
+ optarg, strerror(errno));
+ exit(1);
+ }
+ break;
+
+ case 'O':
+ if (rd_kafka_topic_conf_set(topic_conf,
+ "produce.offset.report",
+ "true",
+ errstr, sizeof(errstr)) !=
+ RD_KAFKA_CONF_OK) {
+ fprintf(stderr, "%% %s\n", errstr);
+ exit(1);
+ }
+ report_offset = 1;
+ break;
+
+ case 'M':
+ incremental_mode = 1;
+ break;
+
+ case 'N':
+ with_dr = 0;
+ break;
+
+ default:
+ fprintf(stderr, "Unknown option: %c\n", opt);
+ goto usage;
+ }
+ }
+
+ if (topics->cnt == 0 || optind != argc) {
+ if (optind < argc)
+ fprintf(stderr, "Unknown argument: %s\n", argv[optind]);
+ usage:
+ fprintf(stderr,
+ "Usage: %s [-C|-P] -t <topic> "
+ "[-p <partition>] [-b <broker,broker..>] [options..]\n"
+ "\n"
+ "librdkafka version %s (0x%08x)\n"
+ "\n"
+ " Options:\n"
+ " -C | -P | Consumer or Producer mode\n"
+ " -G <groupid> High-level Kafka Consumer mode\n"
+ " -t <topic> Topic to consume / produce\n"
+ " -p <num> Partition (defaults to random). "
+ "Multiple partitions are allowed in -C consumer mode.\n"
+ " -M Print consumer interval stats\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"
+ " -x <cnt> Hard exit after transmitting <cnt> messages (producer)\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"
+ " beginning, end, NNNNN or -NNNNN\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"
+ " -X file=<path> Read config from file.\n"
+ " -T <intvl> Enable statistics from librdkafka at "
+ "specified interval (ms)\n"
+ " -Y <command> Pipe statistics to <command>\n"
+ " -I Idle: dont produce any messages\n"
+ " -q Decrease verbosity\n"
+ " -v Increase verbosity (default 1)\n"
+ " -u Output stats in table format\n"
+ " -r <rate> Producer msg/s limit\n"
+ " -l Latency measurement.\n"
+ " Needs two matching instances, one\n"
+ " consumer and one producer, both\n"
+ " running with the -l switch.\n"
+ " -l Producer: per-message latency stats\n"
+ " -A <file> Write per-message latency stats to "
+ "<file>. Requires -l\n"
+ " -O Report produced offset (producer)\n"
+ " -N No delivery reports (producer)\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_version_str(), rd_kafka_version(),
+ RD_KAFKA_DEBUG_CONTEXTS);
+ exit(1);
+ }
+
+
+ dispintvl *= 1000; /* us */
+
+ if (verbosity > 1)
+ printf("%% Using random seed %i, verbosity level %i\n",
+ seed, verbosity);
+ srand(seed);
+ signal(SIGINT, stop);
+#ifdef SIGUSR1
+ signal(SIGUSR1, sig_usr1);
+#endif
+
+
+ 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);
+ }
+
+ /* Always enable stats (for RTT extraction), and if user supplied
+ * the -T <intvl> option we let her take part of the stats aswell. */
+ rd_kafka_conf_set_stats_cb(conf, stats_cb);
+
+ if (!stats_intvlstr) {
+ /* if no user-desired stats, adjust stats interval
+ * to the display interval. */
+ rd_snprintf(tmp, sizeof(tmp), "%"PRId64, dispintvl / 1000);
+ }
+
+ if (rd_kafka_conf_set(conf, "statistics.interval.ms",
+ stats_intvlstr ? stats_intvlstr : tmp,
+ errstr, sizeof(errstr)) !=
+ RD_KAFKA_CONF_OK) {
+ fprintf(stderr, "%% %s\n", errstr);
+ exit(1);
+ }
+
+ if (latency_mode)
+ do_seq = 0;
+
+ if (stats_intvlstr) {
+ /* User enabled stats (-T) */
+
+#ifndef _MSC_VER
+ if (stats_cmd) {
+ if (!(stats_fp = popen(stats_cmd, "we"))) {
+ fprintf(stderr,
+ "%% Failed to start stats command: "
+ "%s: %s", stats_cmd, strerror(errno));
+ exit(1);
+ }
+ } else
+#endif
+ stats_fp = stdout;
+ }
+
+ if (msgcnt != -1)
+ forever = 0;
+
+ topic = topics->elems[0].topic;
+
+ if (mode == 'P') {
+ /*
+ * Producer
+ */
+ char *sbuf;
+ char *pbuf;
+ int outq;
+ int keylen = key ? (int)strlen(key) : 0;
+ off_t rof = 0;
+ size_t plen = strlen(msgpattern);
+ int partition = partitions ? partitions[0] :
+ RD_KAFKA_PARTITION_UA;
+
+ if (latency_mode) {
+ msgsize = (int)(strlen("LATENCY:") +
+ strlen("18446744073709551615 ")+1);
+ sendflags |= RD_KAFKA_MSG_F_COPY;
+ } else if (do_seq) {
+ int minlen = (int)strlen("18446744073709551615 ")+1;
+ if (msgsize < minlen)
+ msgsize = minlen;
+
+ /* 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((size_t)msgsize-rof, plen);
+ memcpy(sbuf+rof, msgpattern, xlen);
+ rof += (off_t)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);
+
+ if (with_dr)
+ rd_kafka_conf_set_dr_msg_cb(conf, msg_delivered);
+
+ /* 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);
+ }
+
+ global_rk = rk;
+
+ /* Add broker(s) */
+ if (brokers && 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);
+
+
+ if (rate_sleep && verbosity >= 2)
+ fprintf(stderr,
+ "%% Inter message rate limiter sleep %ius\n",
+ rate_sleep);
+
+ dr_disp_div = msgcnt / 50;
+ if (dr_disp_div == 0)
+ dr_disp_div = 10;
+
+ cnt.t_start = cnt.t_last = rd_clock();
+
+ msgs_wait_produce_cnt = msgcnt;
+
+ while (run && (msgcnt == -1 || (int)cnt.msgs < msgcnt)) {
+ /* Send/Produce message. */
+
+ if (idle) {
+ rd_kafka_poll(rk, 1000);
+ continue;
+ }
+
+ if (latency_mode) {
+ rd_snprintf(sbuf, msgsize-1,
+ "LATENCY:%"PRIu64, wall_clock());
+ } else if (do_seq) {
+ rd_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;
+
+ if (msgsize == 0)
+ pbuf = NULL;
+
+ cnt.tx++;
+ while (run &&
+ rd_kafka_produce(rkt, partition,
+ sendflags, pbuf, msgsize,
+ key, keylen, NULL) == -1) {
+ rd_kafka_resp_err_t err = rd_kafka_last_error();
+ if (err == RD_KAFKA_RESP_ERR__UNKNOWN_PARTITION)
+ printf("%% No such partition: "
+ "%"PRId32"\n", partition);
+ else if (verbosity >= 3 ||
+ (err != RD_KAFKA_RESP_ERR__QUEUE_FULL && verbosity >= 1))
+ printf("%% produce error: %s%s\n",
+ rd_kafka_err2str(err),
+ err == RD_KAFKA_RESP_ERR__QUEUE_FULL ?
+ " (backpressure)" : "");
+
+ cnt.tx_err++;
+ if (err != RD_KAFKA_RESP_ERR__QUEUE_FULL) {
+ run = 0;
+ break;
+ }
+ now = rd_clock();
+ if (verbosity >= 2 &&
+ cnt.t_enobufs_last + dispintvl <= now) {
+ printf("%% Backpressure %i "
+ "(tx %"PRIu64", "
+ "txerr %"PRIu64")\n",
+ rd_kafka_outq_len(rk),
+ cnt.tx, cnt.tx_err);
+ cnt.t_enobufs_last = now;
+ }
+
+ /* Poll to handle delivery reports */
+ rd_kafka_poll(rk, 10);
+
+ print_stats(rk, mode, otype, compression);
+ }
+
+ msgs_wait_cnt++;
+ if (msgs_wait_produce_cnt != -1)
+ msgs_wait_produce_cnt--;
+ cnt.msgs++;
+ cnt.bytes += msgsize;
+
+ if (rate_sleep) {
+#ifdef _MSC_VER
+ Sleep(rate_sleep / 1000);
+#else
+ usleep(rate_sleep);
+#endif
+ }
+
+ /* Must poll to handle delivery reports */
+ rd_kafka_poll(rk, 0);
+
+ print_stats(rk, mode, otype, compression);
+ }
+
+ forever = 0;
+ if (verbosity >= 2)
+ printf("%% All messages produced, "
+ "now waiting for %li deliveries\n",
+ msgs_wait_cnt);
+
+ /* Wait for messages to be delivered */
+ while (run && rd_kafka_poll(rk, 1000) != -1)
+ print_stats(rk, mode, otype, compression);
+
+
+ outq = rd_kafka_outq_len(rk);
+ if (verbosity >= 2)
+ 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);
+
+ /* Destroy topic */
+ rd_kafka_topic_destroy(rkt);
+
+ /* Destroy the handle */
+ rd_kafka_destroy(rk);
+ global_rk = rk = NULL;
+
+ free(sbuf);
+
+ exitcode = cnt.msgs == cnt.msgs_dr_ok ? 0 : 1;
+
+ } else if (mode == 'C') {
+ /*
+ * Consumer
+ */
+
+ rd_kafka_message_t **rkmessages = NULL;
+ size_t i = 0;
+
+ /* Create Kafka handle */
+ if (!(rk = rd_kafka_new(RD_KAFKA_CONSUMER, conf,
+ errstr, sizeof(errstr)))) {
+ fprintf(stderr,
+ "%% Failed to create Kafka consumer: %s\n",
+ errstr);
+ exit(1);
+ }
+
+ global_rk = rk;
+
+ /* Add broker(s) */
+ if (brokers && 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 */
+ rkqu = rd_kafka_queue_new(rk);
+ for (i=0 ; i<(size_t)partition_cnt ; ++i) {
+ const int r = rd_kafka_consume_start_queue(rkt,
+ partitions[i], start_offset, rkqu);
+
+ if (r == -1) {
+ fprintf(stderr, "%% Error creating queue: %s\n",
+ rd_kafka_err2str(rd_kafka_last_error()));
+ exit(1);
+ }
+ }
+
+ while (run && (msgcnt == -1 || msgcnt > (int)cnt.msgs)) {
+ /* Consume messages.
+ * A message may either be a real message, or
+ * an error signaling (if rkmessage->err is set).
+ */
+ uint64_t fetch_latency;
+ ssize_t r;
+
+ fetch_latency = rd_clock();
+
+ if (batch_size) {
+ int i;
+ int partition = partitions ? partitions[0] :
+ RD_KAFKA_PARTITION_UA;
+
+ /* 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 {
+ /* Queue mode */
+ r = rd_kafka_consume_callback_queue(rkqu, 1000,
+ msg_consume,
+ NULL);
+ }
+
+ cnt.t_fetch_latency += rd_clock() - fetch_latency;
+ if (r == -1)
+ fprintf(stderr, "%% Error: %s\n",
+ rd_kafka_err2str(rd_kafka_last_error()));
+
+ print_stats(rk, mode, otype, compression);
+
+ /* Poll to handle stats callbacks */
+ rd_kafka_poll(rk, 0);
+ }
+ cnt.t_end = rd_clock();
+
+ /* Stop consuming */
+ for (i=0 ; i<(size_t)partition_cnt ; ++i) {
+ int r = rd_kafka_consume_stop(rkt, (int32_t)i);
+ if (r == -1) {
+ fprintf(stderr,
+ "%% Error in consume_stop: %s\n",
+ rd_kafka_err2str(rd_kafka_last_error()));
+ }
+ }
+ rd_kafka_queue_destroy(rkqu);
+
+ /* Destroy topic */
+ rd_kafka_topic_destroy(rkt);
+
+ if (batch_size)
+ free(rkmessages);
+
+ /* Destroy the handle */
+ rd_kafka_destroy(rk);
+
+ global_rk = rk = NULL;
+
+ } else if (mode == 'G') {
+ /*
+ * High-level balanced Consumer
+ */
+ rd_kafka_resp_err_t err;
+
+ rd_kafka_conf_set_rebalance_cb(conf, rebalance_cb);
+ rd_kafka_conf_set_default_topic_conf(conf, topic_conf);
+
+ /* Create Kafka handle */
+ if (!(rk = rd_kafka_new(RD_KAFKA_CONSUMER, conf,
+ errstr, sizeof(errstr)))) {
+ fprintf(stderr,
+ "%% Failed to create Kafka consumer: %s\n",
+ errstr);
+ exit(1);
+ }
+
+ /* Forward all events to consumer queue */
+ rd_kafka_poll_set_consumer(rk);
+
+ global_rk = rk;
+
+ /* Add broker(s) */
+ if (brokers && rd_kafka_brokers_add(rk, brokers) < 1) {
+ fprintf(stderr, "%% No valid brokers specified\n");
+ exit(1);
+ }
+
+ err = rd_kafka_subscribe(rk, topics);
+ if (err) {
+ fprintf(stderr, "%% Subscribe failed: %s\n",
+ rd_kafka_err2str(err));
+ exit(1);
+ }
+ fprintf(stderr, "%% Waiting for group rebalance..\n");
+
+ while (run && (msgcnt == -1 || msgcnt > (int)cnt.msgs)) {
+ /* Consume messages.
+ * A message may either be a real message, or
+ * an event (if rkmessage->err is set).
+ */
+ rd_kafka_message_t *rkmessage;
+ uint64_t fetch_latency;
+
+ fetch_latency = rd_clock();
+
+ rkmessage = rd_kafka_consumer_poll(rk, 1000);
+ if (rkmessage) {
+ msg_consume(rkmessage, NULL);
+ rd_kafka_message_destroy(rkmessage);
+ }
+
+ cnt.t_fetch_latency += rd_clock() - fetch_latency;
+
+ print_stats(rk, mode, otype, compression);
+ }
+ cnt.t_end = rd_clock();
+
+ err = rd_kafka_consumer_close(rk);
+ if (err)
+ fprintf(stderr, "%% Failed to close consumer: %s\n",
+ rd_kafka_err2str(err));
+
+ rd_kafka_destroy(rk);
+ }
+
+ print_stats(NULL, mode, otype|_OTYPE_FORCE, compression);
+
+ if (cnt.t_fetch_latency && cnt.msgs)
+ printf("%% Average application fetch latency: %"PRIu64"us\n",
+ cnt.t_fetch_latency / cnt.msgs);
+
+ if (latency_fp)
+ fclose(latency_fp);
+
+ if (stats_fp) {
+#ifndef _MSC_VER
+ pclose(stats_fp);
+#endif
+ stats_fp = NULL;
+ }
+
+ if (partitions)
+ free(partitions);
+
+ rd_kafka_topic_partition_list_destroy(topics);
+
+ /* Let background threads clean up and terminate cleanly. */
+ rd_kafka_wait_destroyed(2000);
+
+ return exitcode;
+}
http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/9f66960e/thirdparty/librdkafka-0.11.1/examples/rdkafka_simple_producer.c
----------------------------------------------------------------------
diff --git a/thirdparty/librdkafka-0.11.1/examples/rdkafka_simple_producer.c b/thirdparty/librdkafka-0.11.1/examples/rdkafka_simple_producer.c
new file mode 100644
index 0000000..a353d01
--- /dev/null
+++ b/thirdparty/librdkafka-0.11.1/examples/rdkafka_simple_producer.c
@@ -0,0 +1,260 @@
+/*
+ * librdkafka - Apache Kafka C library
+ *
+ * Copyright (c) 2017, Magnus Edenhill
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * Simple Apache Kafka producer
+ * using the Kafka driver from librdkafka
+ * (https://github.com/edenhill/librdkafka)
+ */
+
+#include <stdio.h>
+#include <signal.h>
+#include <string.h>
+
+
+/* Typical include path would be <librdkafka/rdkafka.h>, but this program
+ * is builtin from within the librdkafka source tree and thus differs. */
+#include "rdkafka.h"
+
+
+static int run = 1;
+
+/**
+ * @brief Signal termination of program
+ */
+static void stop (int sig) {
+ run = 0;
+ fclose(stdin); /* abort fgets() */
+}
+
+
+/**
+ * @brief Message delivery report callback.
+ *
+ * This callback is called exactly once per message, indicating if
+ * the message was succesfully delivered
+ * (rkmessage->err == RD_KAFKA_RESP_ERR_NO_ERROR) or permanently
+ * failed delivery (rkmessage->err != RD_KAFKA_RESP_ERR_NO_ERROR).
+ *
+ * The callback is triggered from rd_kafka_poll() and executes on
+ * the application's thread.
+ */
+static void dr_msg_cb (rd_kafka_t *rk,
+ const rd_kafka_message_t *rkmessage, void *opaque) {
+ if (rkmessage->err)
+ fprintf(stderr, "%% Message delivery failed: %s\n",
+ rd_kafka_err2str(rkmessage->err));
+ else
+ fprintf(stderr,
+ "%% Message delivered (%zd bytes, "
+ "partition %"PRId32")\n",
+ rkmessage->len, rkmessage->partition);
+
+ /* The rkmessage is destroyed automatically by librdkafka */
+}
+
+
+
+int main (int argc, char **argv) {
+ rd_kafka_t *rk; /* Producer instance handle */
+ rd_kafka_topic_t *rkt; /* Topic object */
+ rd_kafka_conf_t *conf; /* Temporary configuration object */
+ char errstr[512]; /* librdkafka API error reporting buffer */
+ char buf[512]; /* Message value temporary buffer */
+ const char *brokers; /* Argument: broker list */
+ const char *topic; /* Argument: topic to produce to */
+
+ /*
+ * Argument validation
+ */
+ if (argc != 3) {
+ fprintf(stderr, "%% Usage: %s <broker> <topic>\n", argv[0]);
+ return 1;
+ }
+
+ brokers = argv[1];
+ topic = argv[2];
+
+
+ /*
+ * Create Kafka client configuration place-holder
+ */
+ conf = rd_kafka_conf_new();
+
+ /* Set bootstrap broker(s) as a comma-separated list of
+ * host or host:port (default port 9092).
+ * librdkafka will use the bootstrap brokers to acquire the full
+ * set of brokers from the cluster. */
+ if (rd_kafka_conf_set(conf, "bootstrap.servers", brokers,
+ errstr, sizeof(errstr)) != RD_KAFKA_CONF_OK) {
+ fprintf(stderr, "%s\n", errstr);
+ return 1;
+ }
+
+ /* Set the delivery report callback.
+ * This callback will be called once per message to inform
+ * the application if delivery succeeded or failed.
+ * See dr_msg_cb() above. */
+ rd_kafka_conf_set_dr_msg_cb(conf, dr_msg_cb);
+
+
+ /*
+ * Create producer instance.
+ *
+ * NOTE: rd_kafka_new() takes ownership of the conf object
+ * and the application must not reference it again after
+ * this call.
+ */
+ rk = rd_kafka_new(RD_KAFKA_PRODUCER, conf, errstr, sizeof(errstr));
+ if (!rk) {
+ fprintf(stderr,
+ "%% Failed to create new producer: %s\n", errstr);
+ return 1;
+ }
+
+
+ /* Create topic object that will be reused for each message
+ * produced.
+ *
+ * Both the producer instance (rd_kafka_t) and topic objects (topic_t)
+ * are long-lived objects that should be reused as much as possible.
+ */
+ rkt = rd_kafka_topic_new(rk, topic, NULL);
+ if (!rkt) {
+ fprintf(stderr, "%% Failed to create topic object: %s\n",
+ rd_kafka_err2str(rd_kafka_last_error()));
+ rd_kafka_destroy(rk);
+ return 1;
+ }
+
+ /* Signal handler for clean shutdown */
+ signal(SIGINT, stop);
+
+ fprintf(stderr,
+ "%% Type some text and hit enter to produce message\n"
+ "%% Or just hit enter to only serve delivery reports\n"
+ "%% Press Ctrl-C or Ctrl-D to exit\n");
+
+ while (run && fgets(buf, sizeof(buf), stdin)) {
+ size_t len = strlen(buf);
+
+ if (buf[len-1] == '\n') /* Remove newline */
+ buf[--len] = '\0';
+
+ if (len == 0) {
+ /* Empty line: only serve delivery reports */
+ rd_kafka_poll(rk, 0/*non-blocking */);
+ continue;
+ }
+
+ /*
+ * Send/Produce message.
+ * This is an asynchronous call, on success it will only
+ * enqueue the message on the internal producer queue.
+ * The actual delivery attempts to the broker are handled
+ * by background threads.
+ * The previously registered delivery report callback
+ * (dr_msg_cb) is used to signal back to the application
+ * when the message has been delivered (or failed).
+ */
+ retry:
+ if (rd_kafka_produce(
+ /* Topic object */
+ rkt,
+ /* Use builtin partitioner to select partition*/
+ RD_KAFKA_PARTITION_UA,
+ /* Make a copy of the payload. */
+ RD_KAFKA_MSG_F_COPY,
+ /* Message payload (value) and length */
+ buf, len,
+ /* Optional key and its length */
+ NULL, 0,
+ /* Message opaque, provided in
+ * delivery report callback as
+ * msg_opaque. */
+ NULL) == -1) {
+ /**
+ * Failed to *enqueue* message for producing.
+ */
+ fprintf(stderr,
+ "%% Failed to produce to topic %s: %s\n",
+ rd_kafka_topic_name(rkt),
+ rd_kafka_err2str(rd_kafka_last_error()));
+
+ /* Poll to handle delivery reports */
+ if (rd_kafka_last_error() ==
+ RD_KAFKA_RESP_ERR__QUEUE_FULL) {
+ /* If the internal queue is full, wait for
+ * messages to be delivered and then retry.
+ * The internal queue represents both
+ * messages to be sent and messages that have
+ * been sent or failed, awaiting their
+ * delivery report callback to be called.
+ *
+ * The internal queue is limited by the
+ * configuration property
+ * queue.buffering.max.messages */
+ rd_kafka_poll(rk, 1000/*block for max 1000ms*/);
+ goto retry;
+ }
+ } else {
+ fprintf(stderr, "%% Enqueued message (%zd bytes) "
+ "for topic %s\n",
+ len, rd_kafka_topic_name(rkt));
+ }
+
+
+ /* A producer application should continually serve
+ * the delivery report queue by calling rd_kafka_poll()
+ * at frequent intervals.
+ * Either put the poll call in your main loop, or in a
+ * dedicated thread, or call it after every
+ * rd_kafka_produce() call.
+ * Just make sure that rd_kafka_poll() is still called
+ * during periods where you are not producing any messages
+ * to make sure previously produced messages have their
+ * delivery report callback served (and any other callbacks
+ * you register). */
+ rd_kafka_poll(rk, 0/*non-blocking*/);
+ }
+
+
+ /* Wait for final messages to be delivered or fail.
+ * rd_kafka_flush() is an abstraction over rd_kafka_poll() which
+ * waits for all messages to be delivered. */
+ fprintf(stderr, "%% Flushing final messages..\n");
+ rd_kafka_flush(rk, 10*1000 /* wait for max 10 seconds */);
+
+ /* Destroy topic object */
+ rd_kafka_topic_destroy(rkt);
+
+ /* Destroy the producer instance */
+ rd_kafka_destroy(rk);
+
+ return 0;
+}