Merging upstream version 1.44.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 679 insertions, 0 deletions

diff --git a/fluent-bit/lib/librdkafka-2.1.0/examples/rdkafka_example.cpp b/fluent-bit/lib/librdkafka-2.1.0/examples/rdkafka_example.cpp
new file mode 100644
index 000000000..91c3440b3
--- /dev/null
+++ b/fluent-bit/lib/librdkafka-2.1.0/examples/rdkafka_example.cpp
@@ -0,0 +1,679 @@
+/*
+ * 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 _WIN32
+#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 volatile sig_atomic_t run = 1;
+static bool exit_eof             = false;
+
+static void sigterm(int sig) {
+  run = 0;
+}
+
+
+class ExampleDeliveryReportCb : public RdKafka::DeliveryReportCb {
+ public:
+  void dr_cb(RdKafka::Message &message) {
+    std::string status_name;
+    switch (message.status()) {
+    case RdKafka::Message::MSG_STATUS_NOT_PERSISTED:
+      status_name = "NotPersisted";
+      break;
+    case RdKafka::Message::MSG_STATUS_POSSIBLY_PERSISTED:
+      status_name = "PossiblyPersisted";
+      break;
+    case RdKafka::Message::MSG_STATUS_PERSISTED:
+      status_name = "Persisted";
+      break;
+    default:
+      status_name = "Unknown?";
+      break;
+    }
+    std::cout << "Message delivery for (" << message.len()
+              << " bytes): " << status_name << ": " << 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:
+      if (event.fatal()) {
+        std::cerr << "FATAL ";
+        run = 0;
+      }
+      std::cerr << "ERROR (" << RdKafka::err2str(event.err())
+                << "): " << event.str() << std::endl;
+      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) {
+  const RdKafka::Headers *headers;
+
+  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;
+    }
+    headers = message->headers();
+    if (headers) {
+      std::vector<RdKafka::Headers::Header> hdrs = headers->get_all();
+      for (size_t i = 0; i < hdrs.size(); i++) {
+        const RdKafka::Headers::Header hdr = hdrs[i];
+
+        if (hdr.value() != NULL)
+          printf(" Header: %s = \"%.*s\"\n", hdr.key().c_str(),
+                 (int)hdr.value_size(), (const char *)hdr.value());
+        else
+          printf(" Header:  %s = NULL\n", hdr.key().c_str());
+      }
+    }
+    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 = 0;
+    }
+    break;
+
+  case RdKafka::ERR__UNKNOWN_TOPIC:
+  case RdKafka::ERR__UNKNOWN_PARTITION:
+    std::cerr << "Consume failed: " << message->errstr() << std::endl;
+    run = 0;
+    break;
+
+  default:
+    /* Errors */
+    std::cerr << "Consume failed: " << message->errstr() << std::endl;
+    run = 0;
+  }
+}
+
+
+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|lz4|zstd\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);
+
+    conf->set("default_topic_conf", tconf, 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;
+
+
+    /*
+     * 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;
+      }
+
+      RdKafka::Headers *headers = RdKafka::Headers::create();
+      headers->add("my header", "header value");
+      headers->add("other header", "yes");
+
+      /*
+       * Produce message
+       */
+      RdKafka::ErrorCode resp =
+          producer->produce(topic_str, partition,
+                            RdKafka::Producer::RK_MSG_COPY /* Copy payload */,
+                            /* Value */
+                            const_cast<char *>(line.c_str()), line.size(),
+                            /* Key */
+                            NULL, 0,
+                            /* Timestamp (defaults to now) */
+                            0,
+                            /* Message headers, if any */
+                            headers,
+                            /* Per-message opaque value passed to
+                             * delivery report */
+                            NULL);
+      if (resp != RdKafka::ERR_NO_ERROR) {
+        std::cerr << "% Produce failed: " << RdKafka::err2str(resp)
+                  << std::endl;
+        delete headers; /* Headers are automatically deleted on produce()
+                         * success. */
+      } else {
+        std::cerr << "% Produced message (" << line.size() << " bytes)"
+                  << std::endl;
+      }
+
+      producer->poll(0);
+    }
+    run = 1;
+
+    while (run && producer->outq_len() > 0) {
+      std::cerr << "Waiting for " << producer->outq_len() << std::endl;
+      producer->poll(1000);
+    }
+
+    delete producer;
+
+
+  } else if (mode == "C") {
+    /*
+     * Consumer mode
+     */
+
+    conf->set("enable.partition.eof", "true", errstr);
+
+    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, 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;
+    }
+  }
+
+  delete conf;
+  delete tconf;
+
+  /*
+   * 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;
+}