From: ciomaire Date: Wed, 15 Apr 2015 12:31:55 +0000 (-0700) Subject: Create kafka handles from within write callback X-Git-Tag: collectd-5.5.0~32^2~1 X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=585e552936cc92e437ce1f58695a6d1b3caf785e;p=collectd.git Create kafka handles from within write callback --- diff --git a/src/write_kafka.c b/src/write_kafka.c index ccc4784e..c5c7e3df 100644 --- a/src/write_kafka.c +++ b/src/write_kafka.c @@ -38,6 +38,7 @@ #include #include #include +#include struct kafka_topic_context { #define KAFKA_FORMAT_JSON 0 @@ -48,6 +49,7 @@ struct kafka_topic_context { _Bool store_rates; rd_kafka_topic_conf_t *conf; rd_kafka_topic_t *topic; + rd_kafka_conf_t *kafka_conf; rd_kafka_t *kafka; int has_key; u_int32_t key; @@ -55,8 +57,10 @@ struct kafka_topic_context { char *postfix; char escape_char; char *topic_name; + pthread_mutex_t lock; }; +static int kafka_handle(struct kafka_topic_context *); static int kafka_write(const data_set_t *, const value_list_t *, user_data_t *); static int32_t kafka_partition(const rd_kafka_topic_t *, const void *, size_t, int32_t, void *, void *); @@ -85,6 +89,56 @@ static int32_t kafka_partition(const rd_kafka_topic_t *rkt, return target; } +static int kafka_handle(struct kafka_topic_context *ctx) /* {{{ */ +{ + char errbuf[1024]; + rd_kafka_conf_t *conf; + rd_kafka_topic_conf_t *topic_conf; + + if (ctx->kafka != NULL && ctx->topic != NULL) + return(0); + + if (ctx->kafka == NULL) { + if ((conf = rd_kafka_conf_dup(ctx->kafka_conf)) == NULL) { + ERROR("write_kafka plugin: cannot duplicate kafka config"); + return(1); + } + + if ((ctx->kafka = rd_kafka_new(RD_KAFKA_PRODUCER, conf, + errbuf, sizeof(errbuf))) == NULL) { + ERROR("write_kafka plugin: cannot create kafka handle."); + return 1; + } + + rd_kafka_conf_destroy(ctx->kafka_conf); + INFO ("write_kafka plugin: created KAFKA handle : %s", rd_kafka_name(ctx->kafka)); + +#ifdef HAVE_LIBRDKAFKA_LOGGER + rd_kafka_set_logger(ctx->kafka, kafka_log); +#endif + } + + if (ctx->topic == NULL ) { + if ((topic_conf = rd_kafka_topic_conf_dup(ctx->conf)) == NULL) { + ERROR("write_kafka plugin: cannot duplicate kafka topic config"); + return 1; + } + + if ((ctx->topic = rd_kafka_topic_new(ctx->kafka, ctx->topic_name, + topic_conf)) == NULL) { + ERROR("write_kafka plugin: cannot create topic : %s\n", + rd_kafka_err2str(rd_kafka_errno2err(errno))); + return errno; + } + + rd_kafka_topic_conf_destroy(ctx->conf); + INFO ("write_kafka plugin: handle created for topic : %s", rd_kafka_topic_name(ctx->topic)); + } + + return(0); + +} /* }}} int kafka_handle */ + static int kafka_write(const data_set_t *ds, /* {{{ */ const value_list_t *vl, user_data_t *ud) @@ -100,6 +154,12 @@ static int kafka_write(const data_set_t *ds, /* {{{ */ if ((ds == NULL) || (vl == NULL) || (ctx == NULL)) return EINVAL; + pthread_mutex_lock (&ctx->lock); + status = kafka_handle(ctx); + pthread_mutex_unlock (&ctx->lock); + if( status != 0 ) + return status; + bzero(buffer, sizeof(buffer)); switch (ctx->format) { @@ -164,6 +224,10 @@ static void kafka_topic_context_free(void *p) /* {{{ */ rd_kafka_topic_destroy(ctx->topic); if (ctx->conf != NULL) rd_kafka_topic_conf_destroy(ctx->conf); + if (ctx->kafka_conf != NULL) + rd_kafka_conf_destroy(ctx->kafka_conf); + if (ctx->kafka != NULL) + rd_kafka_destroy(ctx->kafka); sfree(ctx); } /* }}} void kafka_topic_context_free */ @@ -190,22 +254,18 @@ static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{ tctx->store_rates = 1; tctx->format = KAFKA_FORMAT_JSON; -#ifdef HAVE_LIBRDKAFKA_LOG_CB - rd_kafka_conf_set_log_cb(conf, kafka_log); -#endif - if ((tctx->kafka = rd_kafka_new(RD_KAFKA_PRODUCER, conf, - errbuf, sizeof(errbuf))) == NULL) { + if ((tctx->kafka_conf = rd_kafka_conf_dup(conf)) == NULL) { sfree(tctx); - ERROR("write_kafka plugin: cannot create kafka handle."); + ERROR("write_kafka plugin: cannot allocate memory for kafka config"); return; } -#ifdef HAVE_LIBRDKAFKA_LOGGER - rd_kafka_set_logger(tctx->kafka, kafka_log); + +#ifdef HAVE_LIBRDKAFKA_LOG_CB + rd_kafka_conf_set_log_cb(tctx->kafka_conf, kafka_log); #endif - conf = NULL; if ((tctx->conf = rd_kafka_topic_conf_new()) == NULL) { - rd_kafka_destroy(tctx->kafka); + rd_kafka_conf_destroy(tctx->kafka_conf); sfree(tctx); ERROR ("write_kafka plugin: cannot create topic configuration."); return; @@ -327,13 +387,6 @@ static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{ rd_kafka_topic_conf_set_partitioner_cb(tctx->conf, kafka_partition); rd_kafka_topic_conf_set_opaque(tctx->conf, tctx); - if ((tctx->topic = rd_kafka_topic_new(tctx->kafka, tctx->topic_name, - tctx->conf)) == NULL) { - ERROR("write_kafka plugin: cannot create topic."); - goto errout; - } - tctx->conf = NULL; - ssnprintf(callback_name, sizeof(callback_name), "write_kafka/%s", tctx->topic_name); @@ -347,18 +400,17 @@ static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{ callback_name, status); goto errout; } + + pthread_mutex_init (&tctx->lock, /* attr = */ NULL); + return; errout: - if (conf != NULL) - rd_kafka_conf_destroy(conf); - if (tctx->kafka != NULL) - rd_kafka_destroy(tctx->kafka); - if (tctx->topic != NULL) - rd_kafka_topic_destroy(tctx->topic); if (tctx->topic_name != NULL) free(tctx->topic_name); if (tctx->conf != NULL) rd_kafka_topic_conf_destroy(tctx->conf); + if (tctx->kafka_conf != NULL) + rd_kafka_conf_destroy(tctx->kafka_conf); sfree(tctx); } /* }}} int kafka_config_topic */ @@ -367,7 +419,6 @@ static int kafka_config(oconfig_item_t *ci) /* {{{ */ int i; oconfig_item_t *child; rd_kafka_conf_t *conf; - rd_kafka_conf_t *cloned; rd_kafka_conf_res_t ret; char errbuf[1024]; @@ -375,16 +426,11 @@ static int kafka_config(oconfig_item_t *ci) /* {{{ */ WARNING("cannot allocate kafka configuration."); return -1; } - for (i = 0; i < ci->children_num; i++) { child = &ci->children[i]; if (strcasecmp("Topic", child->key) == 0) { - if ((cloned = rd_kafka_conf_dup(conf)) == NULL) { - WARNING("write_kafka plugin: cannot allocate memory for kafka config"); - goto errout; - } - kafka_config_topic (cloned, child); + kafka_config_topic (conf, child); } else if (strcasecmp(child->key, "Property") == 0) { char *key = NULL; char *val = NULL;