messages: add MOSDPGPCT

Signed-off-by: Samuel Just <[email protected]>

Author: athanatos

src/messages/MOSDPGPCT.h

@@ -0,0 +1,99 @@
+// -*- 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) 2024 IBM, Red Hat
+ *
+ * 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.
+ *
+ */
+
+#pragma once
+
+
+#include "MOSDFastDispatchOp.h"
+
+class MOSDPGPCT final : public MOSDFastDispatchOp {
+private:
+  static constexpr int HEAD_VERSION = 1;
+  static constexpr int COMPAT_VERSION = 1;
+
+public:
+  /// epoch at which the message was sent
+  epoch_t map_epoch = 0;
+
+  /// start epoch of the interval in which the message was sent
+  epoch_t min_epoch = 0;
+
+  /// target pg
+  spg_t pgid;
+
+  /**
+   * pg_committed_to
+   *
+   * Propagates PeeringState::pg_committed_to to replicas as with
+   * MOSDRepOp, ECSubWrite, MOSDPGPCT.
+   */
+  eversion_t pg_committed_to;
+
+  epoch_t get_map_epoch() const override {
+    return map_epoch;
+  }
+  epoch_t get_min_epoch() const override {
+    return min_epoch;
+  }
+  spg_t get_spg() const override {
+    return pgid;
+  }
+
+  MOSDPGPCT()
+    : MOSDFastDispatchOp{MSG_OSD_PG_PCT, HEAD_VERSION,
+			 COMPAT_VERSION} {}
+  MOSDPGPCT(
+    spg_t pgid,
+    epoch_t epoch,
+    epoch_t min_epoch,
+    eversion_t pg_committed_to)
+    : MOSDFastDispatchOp{MSG_OSD_PG_PCT, HEAD_VERSION,
+			 COMPAT_VERSION},
+      map_epoch(epoch),
+      min_epoch(min_epoch),
+      pgid(pgid),
+      pg_committed_to(pg_committed_to)
+  {}
+
+private:
+  ~MOSDPGPCT() final {}
+
+public:
+  std::string_view get_type_name() const override { return "PGPCT"; }
+  void print(std::ostream& out) const override {
+    out << "pg_pct(" << pgid << " epoch " << map_epoch
+	<< "/" << min_epoch
+	<< " pg_committed_to " << pg_committed_to
+	<< ")";
+  }
+
+  void encode_payload(uint64_t features) override {
+    using ceph::encode;
+    encode(map_epoch, payload);
+    encode(min_epoch, payload);
+    encode(pgid, payload);
+    encode(pg_committed_to, payload);
+  }
+  void decode_payload() override {
+    using ceph::decode;
+    auto p = payload.cbegin();
+    decode(map_epoch, p);
+    decode(min_epoch, p);
+    decode(pgid, p);
+    decode(pg_committed_to, p);
+  }
+private:
+  template<class T, typename... Args>
+  friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
+};

src/msg/Message.cc

@@ -219,6 +219,8 @@
 #include "messages/MOSDPGUpdateLogMissing.h"
 #include "messages/MOSDPGUpdateLogMissingReply.h"
 
+#include "messages/MOSDPGPCT.h"
+
 #include "messages/MNVMeofGwBeacon.h"
 #include "messages/MNVMeofGwMap.h"
 
@@ -549,6 +551,9 @@ Message *decode_message(CephContext *cct,
   case MSG_OSD_PG_UPDATE_LOG_MISSING_REPLY:
     m = make_message<MOSDPGUpdateLogMissingReply>();
     break;
+  case MSG_OSD_PG_PCT:
+    m = make_message<MOSDPGPCT>();
+    break;
   case CEPH_MSG_OSD_BACKOFF:
     m = make_message<MOSDBackoff>();
     break;

src/msg/Message.h

@@ -136,6 +136,8 @@
 #define MSG_OSD_PG_UPDATE_LOG_MISSING  114
 #define MSG_OSD_PG_UPDATE_LOG_MISSING_REPLY  115
 
+#define MSG_OSD_PG_PCT 136
+
 #define MSG_OSD_PG_CREATED      116
 #define MSG_OSD_REP_SCRUBMAP    117
 #define MSG_OSD_PG_RECOVERY_DELETE 118