mirror of
https://github.com/ceph/ceph
synced 2025-03-08 09:19:03 +00:00
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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// vim: ts=8 sw=2 smarttab
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/*
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* Ceph - scalable distributed file system
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*
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* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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*
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* This is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software
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* Foundation. See file COPYING.
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*
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*/
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#ifndef CEPH_MCLIENTSESSION_H
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#define CEPH_MCLIENTSESSION_H
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#include "msg/Message.h"
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class MClientSession : public Message {
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static const int HEAD_VERSION = 2;
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static const int COMPAT_VERSION = 1;
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public:
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ceph_mds_session_head head;
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std::map<std::string, std::string> client_meta;
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int get_op() const { return head.op; }
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version_t get_seq() const { return head.seq; }
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utime_t get_stamp() const { return utime_t(head.stamp); }
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int get_max_caps() const { return head.max_caps; }
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int get_max_leases() const { return head.max_leases; }
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MClientSession() : Message(CEPH_MSG_CLIENT_SESSION, HEAD_VERSION, COMPAT_VERSION) { }
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MClientSession(int o, version_t s=0) :
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Message(CEPH_MSG_CLIENT_SESSION, HEAD_VERSION, COMPAT_VERSION) {
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memset(&head, 0, sizeof(head));
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head.op = o;
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head.seq = s;
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}
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MClientSession(int o, utime_t st) :
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Message(CEPH_MSG_CLIENT_SESSION, HEAD_VERSION, COMPAT_VERSION) {
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memset(&head, 0, sizeof(head));
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head.op = o;
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head.seq = 0;
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st.encode_timeval(&head.stamp);
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}
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private:
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~MClientSession() {}
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public:
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const char *get_type_name() const { return "client_session"; }
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void print(ostream& out) const {
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out << "client_session(" << ceph_session_op_name(get_op());
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if (get_seq())
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out << " seq " << get_seq();
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if (get_op() == CEPH_SESSION_RECALL_STATE)
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out << " max_caps " << head.max_caps << " max_leases " << head.max_leases;
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out << ")";
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}
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void decode_payload() {
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bufferlist::iterator p = payload.begin();
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::decode(head, p);
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if (header.version >= 2) {
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::decode(client_meta, p);
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}
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}
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void encode_payload(uint64_t features) {
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::encode(head, payload);
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if (client_meta.empty()) {
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// If we're not trying to send any metadata (always the case if
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// we are a server) then send older-format message to avoid upsetting
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// old kernel clients.
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header.version = 1;
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} else {
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::encode(client_meta, payload);
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header.version = HEAD_VERSION;
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}
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}
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};
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#endif
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