Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 180 insertions, 0 deletions

diff --git a/src/messages/MBackfillReserve.h b/src/messages/MBackfillReserve.h
new file mode 100644
index 000000000..fbb262b83
--- /dev/null
+++ b/src/messages/MBackfillReserve.h
@@ -0,0 +1,180 @@
+// -*- 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_MBACKFILL_H
+#define CEPH_MBACKFILL_H
+
+#include "msg/Message.h"
+#include "messages/MOSDPeeringOp.h"
+#include "osd/PGPeeringEvent.h"
+
+class MBackfillReserve : public MOSDPeeringOp {
+private:
+  static constexpr int HEAD_VERSION = 5;
+  static constexpr int COMPAT_VERSION = 4;
+public:
+  spg_t pgid;
+  epoch_t query_epoch;
+  enum {
+    REQUEST = 0,   // primary->replica: please reserve a slot
+    GRANT = 1,     // replica->primary: ok, i reserved it
+    REJECT_TOOFULL = 2,    // replica->primary: too full, sorry, try again later (*)
+    RELEASE = 3,   // primary->replcia: release the slot i reserved before
+    REVOKE_TOOFULL = 4,   // replica->primary: too full, stop backfilling
+    REVOKE = 5,    // replica->primary: i'm taking back the slot i gave you
+    // (*) NOTE: prior to luminous, REJECT was overloaded to also mean release
+  };
+  uint32_t type;
+  uint32_t priority;
+  int64_t primary_num_bytes;
+  int64_t shard_num_bytes;
+
+  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,
+	RequestBackfillPrio(priority, primary_num_bytes, shard_num_bytes));
+    case GRANT:
+      return new PGPeeringEvent(
+	query_epoch,
+	query_epoch,
+	RemoteBackfillReserved());
+    case REJECT_TOOFULL:
+      // NOTE: this is replica -> primary "i reject your request"
+      //      and also primary -> replica "cancel my previously-granted request"
+      //                                  (for older peers)
+      //      and also replica -> primary "i revoke your reservation"
+      //                                  (for older peers)
+      return new PGPeeringEvent(
+	query_epoch,
+	query_epoch,
+	RemoteReservationRejectedTooFull());
+    case RELEASE:
+      return new PGPeeringEvent(
+	query_epoch,
+	query_epoch,
+	RemoteReservationCanceled());
+    case REVOKE_TOOFULL:
+      return new PGPeeringEvent(
+	query_epoch,
+	query_epoch,
+	RemoteReservationRevokedTooFull());
+    case REVOKE:
+      return new PGPeeringEvent(
+	query_epoch,
+	query_epoch,
+	RemoteReservationRevoked());
+    default:
+      ceph_abort();
+    }
+  }
+
+  MBackfillReserve()
+    : MOSDPeeringOp{MSG_OSD_BACKFILL_RESERVE, HEAD_VERSION, COMPAT_VERSION},
+      query_epoch(0), type(-1), priority(-1), primary_num_bytes(0),
+      shard_num_bytes(0) {}
+  MBackfillReserve(int type,
+		   spg_t pgid,
+		   epoch_t query_epoch, unsigned prio = -1,
+		   int64_t primary_num_bytes = 0,
+                   int64_t shard_num_bytes = 0)
+    : MOSDPeeringOp{MSG_OSD_BACKFILL_RESERVE, HEAD_VERSION, COMPAT_VERSION},
+      pgid(pgid), query_epoch(query_epoch),
+      type(type), priority(prio), primary_num_bytes(primary_num_bytes),
+      shard_num_bytes(shard_num_bytes) {}
+
+  std::string_view get_type_name() const override {
+    return "MBackfillReserve";
+  }
+
+  void inner_print(std::ostream& out) const override {
+    switch (type) {
+    case REQUEST:
+      out << "REQUEST";
+      break;
+    case GRANT:
+      out << "GRANT";
+      break;
+    case REJECT_TOOFULL:
+      out << "REJECT_TOOFULL";
+      break;
+    case RELEASE:
+      out << "RELEASE";
+      break;
+    case REVOKE_TOOFULL:
+      out << "REVOKE_TOOFULL";
+      break;
+    case REVOKE:
+      out << "REVOKE";
+      break;
+    }
+    if (type == REQUEST) out << " prio: " << priority;
+    return;
+  }
+
+  void decode_payload() override {
+    auto p = payload.cbegin();
+    using ceph::decode;
+    decode(pgid.pgid, p);
+    decode(query_epoch, p);
+    decode(type, p);
+    decode(priority, p);
+    decode(pgid.shard, p);
+    if (header.version >= 5) {
+      decode(primary_num_bytes, p);
+      decode(shard_num_bytes, p);
+    } else {
+      primary_num_bytes = 0;
+      shard_num_bytes = 0;
+    }
+  }
+
+  void encode_payload(uint64_t features) override {
+    using ceph::encode;
+    if (!HAVE_FEATURE(features, RECOVERY_RESERVATION_2)) {
+      header.version = 3;
+      header.compat_version = 3;
+      encode(pgid.pgid, payload);
+      encode(query_epoch, payload);
+      encode((type == RELEASE || type == REVOKE_TOOFULL || type == REVOKE) ?
+	       REJECT_TOOFULL : type, payload);
+      encode(priority, payload);
+      encode(pgid.shard, payload);
+      return;
+    }
+    header.version = HEAD_VERSION;
+    header.compat_version = COMPAT_VERSION;
+    encode(pgid.pgid, payload);
+    encode(query_epoch, payload);
+    encode(type, payload);
+    encode(priority, payload);
+    encode(pgid.shard, payload);
+    encode(primary_num_bytes, payload);
+    encode(shard_num_bytes, payload);
+  }
+};
+
+#endif