mirror_corosync/qdevices/qnetd-algo-ffsplit.h
Jan Friesse 04ac73018e qnetd: Add support for qnetd algo timer
Algo timer is simplified timer designed for qnetd algorithm. Instead of
full timer only one can exists per client. Workflow is:
- In one of algorithm callbacks qnetd_client_algo_timer_schedule is
  called
- On timeout .timer_callback is called (for example
  qnetd_algo_test_timer_callback). It's possible to set send_vote and
  result_vote to send vote info to client
- It's possible to discard timer by calling
  qnetd_client_algo_timer_abort

Timer is automatically deleted on client disconnect.

To make all this possible, qnetd main loop now has support for
timer-list (main_timer_list). To be able to handle error and disconnect
client from timer callback, client has schedule_disconnect. If this is
set to 1, client is disconnected on current call of poll loop.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
2016-06-28 13:58:40 +02:00

80 lines
3.3 KiB
C

/*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Jan Friesse (jfriesse@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of the Red Hat, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 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 _QNETD_ALGO_FFSPLIT_H_
#define _QNETD_ALGO_FFSPLIT_H_
#include "qnetd-algorithm.h"
#ifdef __cplusplus
extern "C" {
#endif
extern enum tlv_reply_error_code qnetd_algo_ffsplit_client_init(struct qnetd_client *client);
extern enum tlv_reply_error_code qnetd_algo_ffsplit_config_node_list_received(
struct qnetd_client *client, uint32_t msg_seq_num, int config_version_set,
uint64_t config_version, const struct node_list *nodes, int initial,
enum tlv_vote *result_vote);
extern enum tlv_reply_error_code qnetd_algo_ffsplit_membership_node_list_received(
struct qnetd_client *client, uint32_t msg_seq_num,
const struct tlv_ring_id *ring_id,
const struct node_list *nodes, enum tlv_vote *result_vote);
extern enum tlv_reply_error_code qnetd_algo_ffsplit_quorum_node_list_received(
struct qnetd_client *client, uint32_t msg_seq_num,
enum tlv_quorate quorate, const struct node_list *nodes, enum tlv_vote *result_vote);
extern void qnetd_algo_ffsplit_client_disconnect(
struct qnetd_client *client, int server_going_down);
extern enum tlv_reply_error_code qnetd_algo_ffsplit_ask_for_vote_received(
struct qnetd_client *client, uint32_t msg_seq_num, enum tlv_vote *result_vote);
extern enum tlv_reply_error_code qnetd_algo_ffsplit_vote_info_reply_received(
struct qnetd_client *client, uint32_t msg_seq_num);
extern enum tlv_reply_error_code qnetd_algo_ffsplit_timer_callback(
struct qnetd_client *client, int *reschedule_timer,
int *send_vote, enum tlv_vote *result_vote);
extern enum tlv_reply_error_code qnetd_algo_ffsplit_register(void);
#ifdef __cplusplus
}
#endif
#endif /* _QNETD_ALGO_FFSPLIT_H_ */