--- /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_MMONELECTION_H
+#define CEPH_MMONELECTION_H
+
+#include "msg/Message.h"
+#include "mon/MonMap.h"
+#include "mon/mon_types.h"
+
+class MMonElection : public Message {
+
+ static const int HEAD_VERSION = 7;
+ static const int COMPAT_VERSION = 5;
+
+public:
+ static const int OP_PROPOSE = 1;
+ static const int OP_ACK = 2;
+ static const int OP_NAK = 3;
+ static const int OP_VICTORY = 4;
+ static const char *get_opname(int o) {
+ switch (o) {
+ case OP_PROPOSE: return "propose";
+ case OP_ACK: return "ack";
+ case OP_NAK: return "nak";
+ case OP_VICTORY: return "victory";
+ default: ceph_abort(); return 0;
+ }
+ }
+
+ uuid_d fsid;
+ int32_t op;
+ epoch_t epoch;
+ bufferlist monmap_bl;
+ set<int32_t> quorum;
+ uint64_t quorum_features;
+ mon_feature_t mon_features;
+ bufferlist sharing_bl;
+ map<string,string> metadata;
+
+ MMonElection() : Message(MSG_MON_ELECTION, HEAD_VERSION, COMPAT_VERSION),
+ op(0), epoch(0),
+ quorum_features(0),
+ mon_features(0)
+ { }
+
+ MMonElection(int o, epoch_t e, MonMap *m)
+ : Message(MSG_MON_ELECTION, HEAD_VERSION, COMPAT_VERSION),
+ fsid(m->fsid), op(o), epoch(e),
+ quorum_features(0),
+ mon_features(0)
+ {
+ // encode using full feature set; we will reencode for dest later,
+ // if necessary
+ m->encode(monmap_bl, CEPH_FEATURES_ALL);
+ }
+private:
+ ~MMonElection() override {}
+
+public:
+ const char *get_type_name() const override { return "election"; }
+ void print(ostream& out) const override {
+ out << "election(" << fsid << " " << get_opname(op) << " " << epoch << ")";
+ }
+
+ void encode_payload(uint64_t features) override {
+ if (monmap_bl.length() && (features != CEPH_FEATURES_ALL)) {
+ // reencode old-format monmap
+ MonMap t;
+ t.decode(monmap_bl);
+ monmap_bl.clear();
+ t.encode(monmap_bl, features);
+ }
+
+ ::encode(fsid, payload);
+ ::encode(op, payload);
+ ::encode(epoch, payload);
+ ::encode(monmap_bl, payload);
+ ::encode(quorum, payload);
+ ::encode(quorum_features, payload);
+ ::encode((version_t)0, payload); // defunct
+ ::encode((version_t)0, payload); // defunct
+ ::encode(sharing_bl, payload);
+ ::encode(mon_features, payload);
+ ::encode(metadata, payload);
+ }
+ void decode_payload() override {
+ bufferlist::iterator p = payload.begin();
+ ::decode(fsid, p);
+ ::decode(op, p);
+ ::decode(epoch, p);
+ ::decode(monmap_bl, p);
+ ::decode(quorum, p);
+ ::decode(quorum_features, p);
+ {
+ version_t v; // defunct fields from old encoding
+ ::decode(v, p);
+ ::decode(v, p);
+ }
+ ::decode(sharing_bl, p);
+ if (header.version >= 6)
+ ::decode(mon_features, p);
+ if (header.version >= 7)
+ ::decode(metadata, p);
+ }
+
+};
+
+#endif