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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2019 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.
*/
#ifndef _RDKAFKA_TXNMGR_H_
#define _RDKAFKA_TXNMGR_H_
/**
* @returns true if transaction state allows enqueuing new messages
* (i.e., produce()), else false.
*
* @locality application thread
* @locks none
*/
static RD_INLINE RD_UNUSED rd_bool_t rd_kafka_txn_may_enq_msg(rd_kafka_t *rk) {
return !rd_kafka_is_transactional(rk) ||
rd_atomic32_get(&rk->rk_eos.txn_may_enq);
}
/**
* @returns true if transaction state allows sending messages to broker,
* else false.
*
* @locality broker thread
* @locks none
*/
static RD_INLINE RD_UNUSED rd_bool_t rd_kafka_txn_may_send_msg(rd_kafka_t *rk) {
rd_bool_t ret;
rd_kafka_rdlock(rk);
ret = (rk->rk_eos.txn_state == RD_KAFKA_TXN_STATE_IN_TRANSACTION ||
rk->rk_eos.txn_state == RD_KAFKA_TXN_STATE_BEGIN_COMMIT);
rd_kafka_rdunlock(rk);
return ret;
}
/**
* @returns true if transaction and partition state allows sending queued
* messages to broker, else false.
*
* @locality any
* @locks toppar_lock MUST be held
*/
static RD_INLINE RD_UNUSED rd_bool_t
rd_kafka_txn_toppar_may_send_msg(rd_kafka_toppar_t *rktp) {
if (likely(rktp->rktp_flags & RD_KAFKA_TOPPAR_F_IN_TXN))
return rd_true;
return rd_false;
}
void rd_kafka_txn_schedule_register_partitions(rd_kafka_t *rk, int backoff_ms);
/**
* @brief Add partition to transaction (unless already added).
*
* The partition will first be added to the pending list (txn_pending_rktps)
* awaiting registration on the coordinator with AddPartitionsToTxnRequest.
* On successful registration the partition is flagged as IN_TXN and removed
* from the pending list.
*
* @locality application thread
* @locks none
*/
static RD_INLINE RD_UNUSED void
rd_kafka_txn_add_partition(rd_kafka_toppar_t *rktp) {
rd_kafka_t *rk;
rd_bool_t schedule = rd_false;
rd_kafka_toppar_lock(rktp);
/* Already added or registered */
if (likely(rktp->rktp_flags &
(RD_KAFKA_TOPPAR_F_PEND_TXN | RD_KAFKA_TOPPAR_F_IN_TXN))) {
rd_kafka_toppar_unlock(rktp);
return;
}
rktp->rktp_flags |= RD_KAFKA_TOPPAR_F_PEND_TXN;
rd_kafka_toppar_unlock(rktp);
rk = rktp->rktp_rkt->rkt_rk;
mtx_lock(&rk->rk_eos.txn_pending_lock);
schedule = TAILQ_EMPTY(&rk->rk_eos.txn_pending_rktps);
/* List is sorted by topic name since AddPartitionsToTxnRequest()
* requires it. */
TAILQ_INSERT_SORTED(&rk->rk_eos.txn_pending_rktps, rktp,
rd_kafka_toppar_t *, rktp_txnlink,
rd_kafka_toppar_topic_cmp);
rd_kafka_toppar_keep(rktp);
mtx_unlock(&rk->rk_eos.txn_pending_lock);
rd_kafka_dbg(rk, EOS, "ADDPARTS",
"Marked %.*s [%" PRId32
"] as part of transaction: "
"%sscheduling registration",
RD_KAFKAP_STR_PR(rktp->rktp_rkt->rkt_topic),
rktp->rktp_partition, schedule ? "" : "not ");
/* Schedule registration of partitions by the rdkafka main thread */
if (unlikely(schedule))
rd_kafka_txn_schedule_register_partitions(rk, 1 /*immediate*/);
}
void rd_kafka_txn_idemp_state_change(rd_kafka_t *rk,
rd_kafka_idemp_state_t state);
void rd_kafka_txn_set_abortable_error0(rd_kafka_t *rk,
rd_kafka_resp_err_t err,
rd_bool_t requires_epoch_bump,
const char *fmt,
...) RD_FORMAT(printf, 4, 5);
#define rd_kafka_txn_set_abortable_error(rk, err, ...) \
rd_kafka_txn_set_abortable_error0(rk, err, rd_false, __VA_ARGS__)
#define rd_kafka_txn_set_abortable_error_with_bump(rk, err, ...) \
rd_kafka_txn_set_abortable_error0(rk, err, rd_true, __VA_ARGS__)
void rd_kafka_txn_set_fatal_error(rd_kafka_t *rk,
rd_dolock_t do_lock,
rd_kafka_resp_err_t err,
const char *fmt,
...) RD_FORMAT(printf, 4, 5);
rd_bool_t rd_kafka_txn_coord_query(rd_kafka_t *rk, const char *reason);
rd_bool_t rd_kafka_txn_coord_set(rd_kafka_t *rk,
rd_kafka_broker_t *rkb,
const char *fmt,
...) RD_FORMAT(printf, 3, 4);
void rd_kafka_txns_term(rd_kafka_t *rk);
void rd_kafka_txns_init(rd_kafka_t *rk);
#endif /* _RDKAFKA_TXNMGR_H_ */
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