initial code repo

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

diff --git a/src/ceph/src/messages/PaxosServiceMessage.h b/src/ceph/src/messages/PaxosServiceMessage.h
new file mode 100644 (file)
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+++ b/src/ceph/src/messages/PaxosServiceMessage.h
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+#ifndef CEPH_PAXOSSERVICEMESSAGE_H
+#define CEPH_PAXOSSERVICEMESSAGE_H
+
+#include "msg/Message.h"
+#include "mon/Session.h"
+
+class PaxosServiceMessage : public Message {
+ public:
+  version_t version;
+  __s16 deprecated_session_mon;
+  uint64_t deprecated_session_mon_tid;
+
+  // track which epoch the leader received a forwarded request in, so we can
+  // discard forwarded requests appropriately on election boundaries.
+  epoch_t rx_election_epoch;
+  
+  PaxosServiceMessage()
+    : Message(MSG_PAXOS),
+      version(0), deprecated_session_mon(-1), deprecated_session_mon_tid(0),
+      rx_election_epoch(0) { }
+  PaxosServiceMessage(int type, version_t v, int enc_version=1, int compat_enc_version=0)
+    : Message(type, enc_version, compat_enc_version),
+      version(v), deprecated_session_mon(-1), deprecated_session_mon_tid(0),
+      rx_election_epoch(0)  { }
+ protected:
+  ~PaxosServiceMessage() override {}
+
+ public:
+  void paxos_encode() {
+    ::encode(version, payload);
+    ::encode(deprecated_session_mon, payload);
+    ::encode(deprecated_session_mon_tid, payload);
+  }
+
+  void paxos_decode( bufferlist::iterator& p ) {
+    ::decode(version, p);
+    ::decode(deprecated_session_mon, p);
+    ::decode(deprecated_session_mon_tid, p);
+  }
+
+  void encode_payload(uint64_t features) override {
+    ceph_abort();
+    paxos_encode();
+  }
+
+  void decode_payload() override {
+    ceph_abort();
+    bufferlist::iterator p = payload.begin();
+    paxos_decode(p);
+  }
+
+  /** 
+   * These messages are only used by the monitors and clients,
+   * and the client doesn't care, so we're creating a monitor-specific
+   * function here. Note that this function explicitly exists to bypass
+   * the normal ref-counting, so don't expect the returned pointer to be
+   * very long-lived -- it will still only last as long as the Session would
+   * normally.
+   */
+  MonSession *get_session() {
+    MonSession *session = (MonSession *)get_connection()->get_priv();
+    if (session)
+      session->put();
+    return session;
+  }
+  
+  const char *get_type_name() const override { return "PaxosServiceMessage"; }
+};
+
+#endif