X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fwrite_kafka.c;h=2df52a2057036c79cf2d56688f0746261affa8c8;hb=4103105fb43cd72294f165b2541540b3a8a99532;hp=37b3e14f25ef821aea4b93332007b26173473253;hpb=01e2d29ebc5dec07daab935da3fcee5bb9c7d620;p=collectd.git

diff --git a/src/write_kafka.c b/src/write_kafka.c
index 37b3e14f..2df52a20 100644
--- a/src/write_kafka.c
+++ b/src/write_kafka.c
@@ -25,19 +25,16 @@
  */
 
 #include "collectd.h"
+
 #include "plugin.h"
 #include "common.h"
 #include "configfile.h"
-#include "utils_cache.h"
 #include "utils_cmd_putval.h"
 #include "utils_format_graphite.h"
 #include "utils_format_json.h"
-#include "utils_crc32.h"
 
 #include <stdint.h>
 #include <librdkafka/rdkafka.h>
-#include <pthread.h>
-#include <zlib.h>
 #include <errno.h>
 
 struct kafka_topic_context {
@@ -74,11 +71,19 @@ static void kafka_log(const rd_kafka_t *rkt, int level,
 }
 #endif
 
+static uint32_t kafka_hash(const char *keydata, size_t keylen)
+{
+    uint32_t hash = 5381;
+    for (; keylen > 0; keylen--)
+        hash = ((hash << 5) + hash) + keydata[keylen - 1];
+    return hash;
+}
+
 static int32_t kafka_partition(const rd_kafka_topic_t *rkt,
                                const void *keydata, size_t keylen,
                                int32_t partition_cnt, void *p, void *m)
 {
-    uint32_t key = *((uint32_t *)keydata );
+    uint32_t key = kafka_hash(keydata, keylen);
     uint32_t target = key % partition_cnt;
     int32_t  i = partition_cnt;
 
@@ -202,6 +207,8 @@ static int kafka_write(const data_set_t *ds, /* {{{ */
     key = ctx->key;
     if (key != NULL)
         keylen = strlen (key);
+    else
+        keylen = 0;
 
     rd_kafka_produce(ctx->topic, RD_KAFKA_PARTITION_UA,
                      RD_KAFKA_MSG_F_COPY, buffer, blen,
@@ -252,6 +259,7 @@ static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{
     tctx->escape_char = '.';
     tctx->store_rates = 1;
     tctx->format = KAFKA_FORMAT_JSON;
+    tctx->key = NULL;
 
     if ((tctx->kafka_conf = rd_kafka_conf_dup(conf)) == NULL) {
         sfree(tctx);
@@ -315,6 +323,7 @@ static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{
 
         } else if (strcasecmp ("Key", child->key) == 0)  {
             cf_util_get_string (child, &tctx->key);
+            assert (tctx->key != NULL);
         } else if (strcasecmp ("Format", child->key) == 0) {
             status = cf_util_get_string(child, &key);
             if (status != 0)