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NVMeofGwMap.h
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NVMeofGwMap.h
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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2023 IBM, Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*/
#ifndef MON_NVMEOFGWMAP_H_
#define MON_NVMEOFGWMAP_H_
#include <map>
#include <iostream>
#include "include/encoding.h"
#include "include/utime.h"
#include "common/Formatter.h"
#include "common/ceph_releases.h"
#include "common/version.h"
#include "common/options.h"
#include "common/Clock.h"
#include "msg/Message.h"
#include "common/ceph_time.h"
#include "NVMeofGwTypes.h"
#define dout_context g_ceph_context
#define dout_subsys ceph_subsys_mon
#undef dout_prefix
#define MODULE_PREFFIX "nvmeofgw "
#define dout_prefix *_dout << MODULE_PREFFIX << __PRETTY_FUNCTION__ << " "
static const version_t STRUCT_VERSION = 2;
static const version_t OLD_STRUCT_VERSION = 1;
using ceph::coarse_mono_clock;
class Monitor;
/*-------------------*/
class NVMeofGwMap
{
public:
Monitor* mon = NULL;
epoch_t epoch = 0; // epoch is for Paxos synchronization mechanizm
bool delay_propose = false;
std::map<entity_addrvec_t , uint32_t> peer_addr_2_version;
std::map<NvmeGroupKey, NvmeGwMonStates> created_gws;
std::map<NvmeGroupKey, NvmeGwTimers> fsm_timers;// map that handles timers started by all Gateway FSMs
void to_gmap(std::map<NvmeGroupKey, NvmeGwMonClientStates>& Gmap) const;
int cfg_add_gw (const NvmeGwId &gw_id, const NvmeGroupKey& group_key);
int cfg_delete_gw (const NvmeGwId &gw_id, const NvmeGroupKey& group_key);
void process_gw_map_ka (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, epoch_t& last_osd_epoch, bool &propose_pending);
int process_gw_map_gw_down (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, bool &propose_pending);
void update_active_timers (bool &propose_pending);
void handle_abandoned_ana_groups (bool &propose_pending);
void handle_removed_subsystems (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, const std::vector<NvmeNqnId> ¤t_subsystems, bool &propose_pending);
void start_timer (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, NvmeAnaGrpId anagrpid, uint8_t value);
private:
void add_grp_id (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, const NvmeAnaGrpId grpid);
void remove_grp_id(const NvmeGwId &gw_id, const NvmeGroupKey& group_key, const NvmeAnaGrpId grpid);
void fsm_handle_gw_down (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, gw_states_per_group_t state, NvmeAnaGrpId grpid, bool &map_modified);
void fsm_handle_gw_delete (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, gw_states_per_group_t state, NvmeAnaGrpId grpid, bool &map_modified);
void fsm_handle_gw_alive (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, NvmeGwMonState & gw_state, gw_states_per_group_t state,
NvmeAnaGrpId grpid, epoch_t& last_osd_epoch, bool &map_modified);
void fsm_handle_to_expired (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, NvmeAnaGrpId grpid, bool &map_modified);
void find_failover_candidate(const NvmeGwId &gw_id, const NvmeGroupKey& group_key, NvmeAnaGrpId grpid, bool &propose_pending);
void find_failback_gw (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, bool &propose_pending);
void set_failover_gw_for_ANA_group (const NvmeGwId &failed_gw_id, const NvmeGroupKey& group_key, const NvmeGwId &gw_id,
NvmeAnaGrpId groupid);
int get_timer (const NvmeGwId &gw_id, const NvmeGroupKey& group_key, NvmeAnaGrpId anagrpid);
void cancel_timer(const NvmeGwId &gw_id, const NvmeGroupKey& group_key, NvmeAnaGrpId anagrpid);
void validate_gw_map(const NvmeGroupKey& group_key);
public:
int blocklist_gw(const NvmeGwId &gw_id, const NvmeGroupKey& group_key, NvmeAnaGrpId ANA_groupid, epoch_t &epoch, bool failover);
void encode(ceph::buffer::list &bl, uint64_t features) const {
uint8_t version;
if (HAVE_FEATURE(features, SERVER_SQUID)) version = STRUCT_VERSION;
else version = OLD_STRUCT_VERSION;
ENCODE_START(version, 1, bl);
dout(4) << "encode1 version " << (uint64_t)version << version << " features " << features << dendl;
using ceph::encode;
encode(epoch, bl);// global map epoch
if (version == STRUCT_VERSION) {
//encode(peer_addr_2_version, bl);
}
encode(created_gws, bl, features); //Encode created GWs
encode(fsm_timers, bl, features);
ENCODE_FINISH(bl);
}
void decode(ceph::buffer::list::const_iterator &bl) {
using ceph::decode;
epoch_t struct_version = 0;
DECODE_START(STRUCT_VERSION, bl);
DECODE_OLDEST(1);
struct_version = struct_v;
dout(4) << "decode version " << struct_version << dendl;
decode(epoch, bl);
if (struct_version == STRUCT_VERSION) {
//dout(4) << "Decode peer_2_addr " << dendl;
//decode(peer_addr_2_version, bl);
}
decode(created_gws, bl);
decode(fsm_timers, bl);
DECODE_FINISH(bl);
}
};
#include "NVMeofGwSerialize.h"
#endif /* SRC_MON_NVMEOFGWMAP_H_ */