--- /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_MOSDPGPEERNOTIFY_H
+#define CEPH_MOSDPGPEERNOTIFY_H
+
+#include "msg/Message.h"
+
+#include "osd/osd_types.h"
+
+/*
+ * PGNotify - notify primary of my PGs and versions.
+ */
+
+class MOSDPGNotify : public Message {
+
+ static const int HEAD_VERSION = 6;
+ static const int COMPAT_VERSION = 2;
+
+ epoch_t epoch = 0;
+ /// query_epoch is the epoch of the query being responded to, or
+ /// the current epoch if this is not being sent in response to a
+ /// query. This allows the recipient to disregard responses to old
+ /// queries.
+ vector<pair<pg_notify_t,PastIntervals> > pg_list; // pgid -> version
+
+ public:
+ version_t get_epoch() const { return epoch; }
+ const vector<pair<pg_notify_t,PastIntervals> >& get_pg_list() const {
+ return pg_list;
+ }
+
+ MOSDPGNotify()
+ : Message(MSG_OSD_PG_NOTIFY, HEAD_VERSION, COMPAT_VERSION) {
+ set_priority(CEPH_MSG_PRIO_HIGH);
+ }
+ MOSDPGNotify(epoch_t e, vector<pair<pg_notify_t,PastIntervals> >& l)
+ : Message(MSG_OSD_PG_NOTIFY, HEAD_VERSION, COMPAT_VERSION),
+ epoch(e) {
+ pg_list.swap(l);
+ set_priority(CEPH_MSG_PRIO_HIGH);
+ }
+private:
+ ~MOSDPGNotify() override {}
+
+public:
+ const char *get_type_name() const override { return "PGnot"; }
+
+ void encode_payload(uint64_t features) override {
+ if (HAVE_FEATURE(features, SERVER_LUMINOUS)) {
+ header.version = HEAD_VERSION;
+ } else {
+ // for jewel+kraken compat only
+ header.version = 5;
+
+ // Use query_epoch for first entry for backwards compatibility
+ epoch_t query_epoch = epoch;
+ if (pg_list.size())
+ query_epoch = pg_list.begin()->first.query_epoch;
+
+ ::encode(epoch, payload);
+
+ // v2 was vector<pg_info_t>
+ __u32 n = pg_list.size();
+ ::encode(n, payload);
+ for (auto p = pg_list.begin();
+ p != pg_list.end();
+ p++)
+ ::encode(p->first.info, payload);
+
+ ::encode(query_epoch, payload);
+
+ // v3 needs the PastIntervals for each record
+ for (auto p = pg_list.begin();
+ p != pg_list.end();
+ p++) {
+ p->second.encode_classic(payload);
+ }
+
+ // v4 needs epoch_sent, query_epoch
+ for (vector<pair<pg_notify_t,PastIntervals> >::iterator p = pg_list.begin();
+ p != pg_list.end();
+ p++)
+ ::encode(pair<epoch_t, epoch_t>(
+ p->first.epoch_sent, p->first.query_epoch),
+ payload);
+
+ // v5 needs from, to
+ for (vector<pair<pg_notify_t, PastIntervals> >::iterator p = pg_list.begin();
+ p != pg_list.end();
+ ++p) {
+ ::encode(p->first.from, payload);
+ ::encode(p->first.to, payload);
+ }
+ return;
+ }
+
+ ::encode(epoch, payload);
+ ::encode(pg_list, payload);
+ }
+
+ void decode_payload() override {
+ bufferlist::iterator p = payload.begin();
+ if (header.version < 6) {
+ // for kraken+jewel compat only
+ epoch_t query_epoch;
+ ::decode(epoch, p);
+
+ // decode pg_info_t portion of the vector
+ __u32 n;
+ ::decode(n, p);
+ pg_list.resize(n);
+ for (unsigned i=0; i<n; i++) {
+ ::decode(pg_list[i].first.info, p);
+ }
+
+ ::decode(query_epoch, p);
+
+ if (header.version >= 3) {
+ // get the PastIntervals portion
+ for (unsigned i=0; i<n; i++) {
+ pg_list[i].second.decode_classic(p);
+ }
+ }
+
+ // v3 needs epoch_sent, query_epoch
+ for (auto i = pg_list.begin();
+ i != pg_list.end();
+ i++) {
+ if (header.version >= 4) {
+ pair<epoch_t, epoch_t> dec;
+ ::decode(dec, p);
+ i->first.epoch_sent = dec.first;
+ i->first.query_epoch = dec.second;
+ } else {
+ i->first.epoch_sent = epoch;
+ i->first.query_epoch = query_epoch;
+ }
+ }
+
+ // v5 needs from and to
+ if (header.version >= 5) {
+ for (auto i = pg_list.begin();
+ i != pg_list.end();
+ i++) {
+ ::decode(i->first.from, p);
+ ::decode(i->first.to, p);
+ }
+ }
+ return;
+ }
+
+ ::decode(epoch, p);
+ ::decode(pg_list, p);
+ }
+ void print(ostream& out) const override {
+ out << "pg_notify(";
+ for (auto i = pg_list.begin();
+ i != pg_list.end();
+ ++i) {
+ if (i != pg_list.begin())
+ out << " ";
+ out << i->first << "=" << i->second;
+ }
+ out << " epoch " << epoch
+ << ")";
+ }
+};
+
+#endif