--- /dev/null
+// -*- 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