-// -*- 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) 2004-2006 Sage Weil <sage@newdream.net>
- *
- * 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 CEPH_MCACHEEXPIRE_H
-#define CEPH_MCACHEEXPIRE_H
-
-#include "mds/mdstypes.h"
-
-class MCacheExpire : public Message {
- __s32 from;
-
-public:
- /*
- group things by realm (auth delgation root), since that's how auth is determined.
- that makes it less work to process when exports are in progress.
- */
- struct realm {
- map<vinodeno_t, uint32_t> inodes;
- map<dirfrag_t, uint32_t> dirs;
- map<dirfrag_t, map<pair<string,snapid_t>,uint32_t> > dentries;
-
- void merge(realm& o) {
- inodes.insert(o.inodes.begin(), o.inodes.end());
- dirs.insert(o.dirs.begin(), o.dirs.end());
- for (map<dirfrag_t,map<pair<string,snapid_t>,uint32_t> >::iterator p = o.dentries.begin();
- p != o.dentries.end();
- ++p) {
- if (dentries.count(p->first) == 0)
- dentries[p->first] = p->second;
- else
- dentries[p->first].insert(p->second.begin(), p->second.end());
- }
- }
-
- void encode(bufferlist &bl) const {
- ::encode(inodes, bl);
- ::encode(dirs, bl);
- ::encode(dentries, bl);
- }
- void decode(bufferlist::iterator &bl) {
- ::decode(inodes, bl);
- ::decode(dirs, bl);
- ::decode(dentries, bl);
- }
- };
- WRITE_CLASS_ENCODER(realm)
-
- map<dirfrag_t, realm> realms;
-
- int get_from() { return from; }
-
- MCacheExpire() : Message(MSG_MDS_CACHEEXPIRE), from(-1) {}
- MCacheExpire(int f) :
- Message(MSG_MDS_CACHEEXPIRE),
- from(f) { }
-private:
- ~MCacheExpire() override {}
-
-public:
- const char *get_type_name() const override { return "cache_expire";}
-
- void add_inode(dirfrag_t r, vinodeno_t vino, unsigned nonce) {
- realms[r].inodes[vino] = nonce;
- }
- void add_dir(dirfrag_t r, dirfrag_t df, unsigned nonce) {
- realms[r].dirs[df] = nonce;
- }
- void add_dentry(dirfrag_t r, dirfrag_t df, const string& dn, snapid_t last, unsigned nonce) {
- realms[r].dentries[df][pair<string,snapid_t>(dn,last)] = nonce;
- }
-
- void add_realm(dirfrag_t df, realm& r) {
- if (realms.count(df) == 0)
- realms[df] = r;
- else
- realms[df].merge(r);
- }
-
- void decode_payload() override {
- bufferlist::iterator p = payload.begin();
- ::decode(from, p);
- ::decode(realms, p);
- }
-
- void encode_payload(uint64_t features) override {
- ::encode(from, payload);
- ::encode(realms, payload);
- }
-};
-
-WRITE_CLASS_ENCODER(MCacheExpire::realm)
-
-#endif