mgr: create a skeleton MMonMgrReport message type

We'll use this for sending data to the monitor at tick intervals.

Signed-off-by: Greg Farnum <gfarnum@redhat.com>

src/messages/MMonMgrReport.h

@@ -0,0 +1,52 @@
+// -*- 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) 2017 Greg Farnum/Red Hat <gfarnum@redhat.com>
+ *
+ * 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_MMONMGRREPORT_H
+#define CEPH_MMONMGRREPORT_H
+
+#include "messages/PaxosServiceMessage.h"
+#include "include/types.h"
+
+
+class MMonMgrReport : public PaxosServiceMessage {
+
+  static const int HEAD_VERSION = 1;
+  static const int COMPAT_VERSION = 1;
+
+public:
+  MMonMgrReport()
+    : PaxosServiceMessage(MSG_MON_MGR_REPORT, 0, HEAD_VERSION, COMPAT_VERSION)
+  {}
+
+private:
+  ~MMonMgrReport() override {}
+
+public:
+
+  const char *get_type_name() const override { return "monmgrreport"; }
+
+  void print(ostream& out) const override {
+    out << get_type_name();
+  }
+
+  void encode_payload(uint64_t features) override {
+    paxos_encode();
+  }
+  void decode_payload() override {
+    bufferlist::iterator p = payload.begin();
+    paxos_decode(p);
+  }
+};
+
+#endif

src/msg/Message.cc

@@ -168,6 +168,7 @@ using namespace std;
 #include "messages/MMgrReport.h"
 #include "messages/MMgrOpen.h"
 #include "messages/MMgrConfigure.h"
+#include "messages/MMonMgrReport.h"
 
 #include "messages/MLock.h"
 
@@ -746,6 +747,10 @@ Message *decode_message(CephContext *cct, int crcflags,
     m = new MMgrBeacon();
     break;
 
+  case MSG_MON_MGR_REPORT:
+    m = new MMonMgrReport();
+    break;
+
   case MSG_MGR_MAP:
     m = new MMgrMap();
     break;

src/msg/Message.h

@@ -196,6 +196,8 @@
 
 // *** ceph-mon(MgrMonitor) -> ceph-mgr
 #define MSG_MGR_DIGEST               0x705
+// *** cephmgr -> ceph-mon
+#define MSG_MON_MGR_REPORT        0x706
 
 // ======================================================