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+// -*- 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_MRECOVERY_H
+#define CEPH_MRECOVERY_H
+
+#include "msg/Message.h"
+#include "messages/MOSDPeeringOp.h"
+#include "osd/PGPeeringEvent.h"
+
+class MRecoveryReserve : public MOSDPeeringOp {
+private:
+ static constexpr int HEAD_VERSION = 3;
+ static constexpr int COMPAT_VERSION = 2;
+public:
+ spg_t pgid;
+ epoch_t query_epoch;
+ enum {
+ REQUEST = 0, // primary->replica: please reserve slot
+ GRANT = 1, // replica->primary: ok, i reserved it
+ RELEASE = 2, // primary->replica: release the slot i reserved before
+ REVOKE = 3, // replica->primary: i'm taking back the slot i gave you
+ };
+ uint32_t type;
+ uint32_t priority = 0;
+
+ spg_t get_spg() const {
+ return pgid;
+ }
+ epoch_t get_map_epoch() const {
+ return query_epoch;
+ }
+ epoch_t get_min_epoch() const {
+ return query_epoch;
+ }
+
+ PGPeeringEvent *get_event() override {
+ switch (type) {
+ case REQUEST:
+ return new PGPeeringEvent(
+ query_epoch,
+ query_epoch,
+ RequestRecoveryPrio(priority));
+ case GRANT:
+ return new PGPeeringEvent(
+ query_epoch,
+ query_epoch,
+ RemoteRecoveryReserved());
+ case RELEASE:
+ return new PGPeeringEvent(
+ query_epoch,
+ query_epoch,
+ RecoveryDone());
+ case REVOKE:
+ return new PGPeeringEvent(
+ query_epoch,
+ query_epoch,
+ DeferRecovery(0.0));
+ default:
+ ceph_abort();
+ }
+ }
+
+ MRecoveryReserve()
+ : MOSDPeeringOp{MSG_OSD_RECOVERY_RESERVE, HEAD_VERSION, COMPAT_VERSION},
+ query_epoch(0), type(-1) {}
+ MRecoveryReserve(int type,
+ spg_t pgid,
+ epoch_t query_epoch,
+ unsigned prio = 0)
+ : MOSDPeeringOp{MSG_OSD_RECOVERY_RESERVE, HEAD_VERSION, COMPAT_VERSION},
+ pgid(pgid), query_epoch(query_epoch),
+ type(type), priority(prio) {}
+
+ std::string_view get_type_name() const override {
+ return "MRecoveryReserve";
+ }
+
+ void inner_print(std::ostream& out) const override {
+ switch (type) {
+ case REQUEST:
+ out << "REQUEST";
+ break;
+ case GRANT:
+ out << "GRANT";
+ break;
+ case RELEASE:
+ out << "RELEASE";
+ break;
+ case REVOKE:
+ out << "REVOKE";
+ break;
+ }
+ if (type == REQUEST) out << " prio: " << priority;
+ }
+
+ void decode_payload() override {
+ auto p = payload.cbegin();
+ using ceph::decode;
+ decode(pgid.pgid, p);
+ decode(query_epoch, p);
+ decode(type, p);
+ decode(pgid.shard, p);
+ if (header.version >= 3) {
+ decode(priority, p);
+ }
+ }
+
+ void encode_payload(uint64_t features) override {
+ using ceph::encode;
+ encode(pgid.pgid, payload);
+ encode(query_epoch, payload);
+ encode(type, payload);
+ encode(pgid.shard, payload);
+ encode(priority, payload);
+ }
+private:
+ template<class T, typename... Args>
+ friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
+};
+
+#endif