initial code repo

[stor4nfv.git] / src / ceph / src / messages / MOSDPGLog.h

diff --git a/src/ceph/src/messages/MOSDPGLog.h b/src/ceph/src/messages/MOSDPGLog.h
new file mode 100644 (file)
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+++ b/src/ceph/src/messages/MOSDPGLog.h
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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_MOSDPGLOG_H
+#define CEPH_MOSDPGLOG_H
+
+#include "msg/Message.h"
+
+class MOSDPGLog : public Message {
+
+  static const int HEAD_VERSION = 5;
+  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.
+  epoch_t query_epoch = 0;
+
+public:
+  shard_id_t to;
+  shard_id_t from;
+  pg_info_t info;
+  pg_log_t log;
+  pg_missing_t missing;
+  PastIntervals past_intervals;
+
+  epoch_t get_epoch() const { return epoch; }
+  spg_t get_pgid() const { return spg_t(info.pgid.pgid, to); }
+  epoch_t get_query_epoch() const { return query_epoch; }
+
+  MOSDPGLog() : Message(MSG_OSD_PG_LOG, HEAD_VERSION, COMPAT_VERSION) { 
+    set_priority(CEPH_MSG_PRIO_HIGH); 
+  }
+  MOSDPGLog(shard_id_t to, shard_id_t from, version_t mv, pg_info_t& i)
+    : Message(MSG_OSD_PG_LOG, HEAD_VERSION, COMPAT_VERSION),
+      epoch(mv), query_epoch(mv),
+      to(to), from(from),
+      info(i)  {
+    set_priority(CEPH_MSG_PRIO_HIGH); 
+  }
+  MOSDPGLog(shard_id_t to, shard_id_t from,
+           version_t mv, pg_info_t& i, epoch_t query_epoch)
+    : Message(MSG_OSD_PG_LOG, HEAD_VERSION, COMPAT_VERSION),
+      epoch(mv), query_epoch(query_epoch),
+      to(to), from(from),
+      info(i)  {
+    set_priority(CEPH_MSG_PRIO_HIGH);
+  }
+
+private:
+  ~MOSDPGLog() override {}
+
+public:
+  const char *get_type_name() const override { return "PGlog"; }
+  void print(ostream& out) const override {
+    // NOTE: log is not const, but operator<< doesn't touch fields
+    // swapped out by OSD code.
+    out << "pg_log(" << info.pgid << " epoch " << epoch
+       << " log " << log
+       << " pi " << past_intervals
+       << " query_epoch " << query_epoch << ")";
+  }
+
+  void encode_payload(uint64_t features) override {
+    ::encode(epoch, payload);
+    ::encode(info, payload);
+    ::encode(log, payload);
+    ::encode(missing, payload);
+    ::encode(query_epoch, payload);
+    if (HAVE_FEATURE(features, SERVER_LUMINOUS)) {
+      header.version = HEAD_VERSION;
+      ::encode(past_intervals, payload);
+    } else {
+      header.version = 4;
+      past_intervals.encode_classic(payload);
+    }
+    ::encode(to, payload);
+    ::encode(from, payload);
+  }
+  void decode_payload() override {
+    bufferlist::iterator p = payload.begin();
+    ::decode(epoch, p);
+    ::decode(info, p);
+    log.decode(p, info.pgid.pool());
+    missing.decode(p, info.pgid.pool());
+    if (header.version >= 2) {
+      ::decode(query_epoch, p);
+    }
+    if (header.version >= 3) {
+      if (header.version >= 5) {
+       ::decode(past_intervals, p);
+      } else {
+       past_intervals.decode_classic(p);
+      }
+    }
+    if (header.version >= 4) {
+      ::decode(to, p);
+      ::decode(from, p);
+    } else {
+      to = shard_id_t::NO_SHARD;
+      from = shard_id_t::NO_SHARD;
+    }
+  }
+};
+
+#endif