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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_CLIENT_METASESSION_H
#define CEPH_CLIENT_METASESSION_H
#include "include/types.h"
#include "include/utime.h"
#include "include/xlist.h"
#include "mds/MDSMap.h"
#include "mds/mdstypes.h"
#include "messages/MClientCapRelease.h"
struct Cap;
struct Inode;
struct CapSnap;
struct MetaRequest;
struct MetaSession {
mds_rank_t mds_num;
ConnectionRef con;
version_t seq = 0;
uint64_t cap_gen = 0;
utime_t cap_ttl, last_cap_renew_request;
uint64_t cap_renew_seq = 0;
entity_addrvec_t addrs;
feature_bitset_t mds_features;
feature_bitset_t mds_metric_flags;
enum {
STATE_NEW, // Unused
STATE_OPENING,
STATE_OPEN,
STATE_CLOSING,
STATE_CLOSED,
STATE_STALE,
STATE_REJECTED,
} state = STATE_OPENING;
enum {
RECLAIM_NULL,
RECLAIMING,
RECLAIM_OK,
RECLAIM_FAIL,
} reclaim_state = RECLAIM_NULL;
int mds_state = MDSMap::STATE_NULL;
bool readonly = false;
std::list<Context*> waiting_for_open;
xlist<Cap*> caps;
// dirty_list keeps all the dirty inodes before flushing in current session.
xlist<Inode*> dirty_list;
xlist<Inode*> flushing_caps;
xlist<MetaRequest*> requests;
xlist<MetaRequest*> unsafe_requests;
std::set<ceph_tid_t> flushing_caps_tids;
ceph::ref_t<MClientCapRelease> release;
MetaSession(mds_rank_t mds_num, ConnectionRef con, const entity_addrvec_t& addrs)
: mds_num(mds_num), con(con), addrs(addrs) {
}
~MetaSession() {
ceph_assert(caps.empty());
ceph_assert(dirty_list.empty());
ceph_assert(flushing_caps.empty());
ceph_assert(requests.empty());
ceph_assert(unsafe_requests.empty());
}
xlist<Inode*> &get_dirty_list() { return dirty_list; }
const char *get_state_name() const;
void dump(Formatter *f, bool cap_dump=false) const;
void enqueue_cap_release(inodeno_t ino, uint64_t cap_id, ceph_seq_t iseq,
ceph_seq_t mseq, epoch_t osd_barrier);
};
using MetaSessionRef = std::shared_ptr<MetaSession>;
#endif
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