initial code repo

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

diff --git a/src/ceph/src/messages/MOSDFailure.h b/src/ceph/src/messages/MOSDFailure.h
new file mode 100644 (file)
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+++ b/src/ceph/src/messages/MOSDFailure.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_MOSDFAILURE_H
+#define CEPH_MOSDFAILURE_H
+
+#include "messages/PaxosServiceMessage.h"
+
+
+class MOSDFailure : public PaxosServiceMessage {
+
+  static const int HEAD_VERSION = 3;
+  static const int COMPAT_VERSION = 3;
+
+ public:
+  enum {
+    FLAG_ALIVE = 0,      // use this on its own to mark as "I'm still alive"
+    FLAG_FAILED = 1,     // if set, failure; if not, recovery
+    FLAG_IMMEDIATE = 2,  // known failure, not a timeout
+  };
+  
+  uuid_d fsid;
+  entity_inst_t target_osd;
+  __u8 flags = 0;
+  epoch_t       epoch = 0;
+  int32_t failed_for = 0;  // known to be failed since at least this long
+
+  MOSDFailure() : PaxosServiceMessage(MSG_OSD_FAILURE, 0, HEAD_VERSION) { }
+  MOSDFailure(const uuid_d &fs, const entity_inst_t& f, int duration, epoch_t e)
+    : PaxosServiceMessage(MSG_OSD_FAILURE, e, HEAD_VERSION, COMPAT_VERSION),
+      fsid(fs), target_osd(f),
+      flags(FLAG_FAILED),
+      epoch(e), failed_for(duration) { }
+  MOSDFailure(const uuid_d &fs, const entity_inst_t& f, int duration, 
+              epoch_t e, __u8 extra_flags)
+    : PaxosServiceMessage(MSG_OSD_FAILURE, e, HEAD_VERSION, COMPAT_VERSION),
+      fsid(fs), target_osd(f),
+      flags(extra_flags),
+      epoch(e), failed_for(duration) { }
+private:
+  ~MOSDFailure() override {}
+
+public: 
+  entity_inst_t get_target() { return target_osd; }
+  bool if_osd_failed() const { 
+    return flags & FLAG_FAILED; 
+  }
+  bool is_immediate() const { 
+    return flags & FLAG_IMMEDIATE; 
+  }
+  epoch_t get_epoch() const { return epoch; }
+
+  void decode_payload() override {
+    bufferlist::iterator p = payload.begin();
+    paxos_decode(p);
+    ::decode(fsid, p);
+    ::decode(target_osd, p);
+    ::decode(epoch, p);
+    ::decode(flags, p);
+    ::decode(failed_for, p);
+  }
+
+  void encode_payload(uint64_t features) override {
+    paxos_encode();
+    ::encode(fsid, payload);
+    ::encode(target_osd, payload, features);
+    ::encode(epoch, payload);
+    ::encode(flags, payload);
+    ::encode(failed_for, payload);
+  }
+
+  const char *get_type_name() const override { return "osd_failure"; }
+  void print(ostream& out) const override {
+    out << "osd_failure("
+       << (if_osd_failed() ? "failed " : "recovered ")
+       << (is_immediate() ? "immediate " : "timeout ")
+       << target_osd << " for " << failed_for << "sec e" << epoch
+       << " v" << version << ")";
+  }
+};
+
+#endif