collectd.spec: fix typo, missing "%" sign

[collectd.git] / src / write_kafka.c

diff --git a/src/write_kafka.c b/src/write_kafka.c
index 10ae5a5..6364c6c 100644 (file)
--- 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;
 
@@ -236,7 +241,6 @@ static void kafka_topic_context_free(void *p) /* {{{ */
 static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{ */
 {
     int                          status;
-    int                          i;
     struct kafka_topic_context  *tctx;
     char                        *key = NULL;
     char                        *val;
@@ -288,7 +292,7 @@ static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{
         goto errout;
     }
 
-    for (i = 0; i < ci->children_num; i++) {
+    for (int i = 0; i < ci->children_num; i++) {
         /*
          * The code here could be simplified but makes room
          * for easy adding of new options later on.
@@ -407,7 +411,6 @@ static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{
 
 static int kafka_config(oconfig_item_t *ci) /* {{{ */
 {
-    int                          i;
     oconfig_item_t              *child;
     rd_kafka_conf_t             *conf;
     rd_kafka_conf_res_t          ret;
@@ -417,7 +420,7 @@ static int kafka_config(oconfig_item_t *ci) /* {{{ */
         WARNING("cannot allocate kafka configuration.");
         return -1;
     }
-    for (i = 0; i < ci->children_num; i++)  {
+    for (int i = 0; i < ci->children_num; i++)  {
         child = &ci->children[i];
 
         if (strcasecmp("Topic", child->key) == 0) {