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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_MMDSSLAVEREQUEST_H
#define CEPH_MMDSSLAVEREQUEST_H
#include "msg/Message.h"
#include "mds/mdstypes.h"
class MMDSSlaveRequest : public MessageInstance<MMDSSlaveRequest> {
public:
friend factory;
static constexpr int OP_XLOCK = 1;
static constexpr int OP_XLOCKACK = -1;
static constexpr int OP_UNXLOCK = 2;
static constexpr int OP_AUTHPIN = 3;
static constexpr int OP_AUTHPINACK = -3;
static constexpr int OP_LINKPREP = 4;
static constexpr int OP_UNLINKPREP = 5;
static constexpr int OP_LINKPREPACK = -4;
static constexpr int OP_RENAMEPREP = 7;
static constexpr int OP_RENAMEPREPACK = -7;
static constexpr int OP_WRLOCK = 8;
static constexpr int OP_WRLOCKACK = -8;
static constexpr int OP_UNWRLOCK = 9;
static constexpr int OP_RMDIRPREP = 10;
static constexpr int OP_RMDIRPREPACK = -10;
static constexpr int OP_DROPLOCKS = 11;
static constexpr int OP_RENAMENOTIFY = 12;
static constexpr int OP_RENAMENOTIFYACK = -12;
static constexpr int OP_FINISH = 17;
static constexpr int OP_COMMITTED = -18;
static constexpr int OP_ABORT = 20; // used for recovery only
//static constexpr int OP_COMMIT = 21; // used for recovery only
static const char *get_opname(int o) {
switch (o) {
case OP_XLOCK: return "xlock";
case OP_XLOCKACK: return "xlock_ack";
case OP_UNXLOCK: return "unxlock";
case OP_AUTHPIN: return "authpin";
case OP_AUTHPINACK: return "authpin_ack";
case OP_LINKPREP: return "link_prep";
case OP_LINKPREPACK: return "link_prep_ack";
case OP_UNLINKPREP: return "unlink_prep";
case OP_RENAMEPREP: return "rename_prep";
case OP_RENAMEPREPACK: return "rename_prep_ack";
case OP_FINISH: return "finish"; // commit
case OP_COMMITTED: return "committed";
case OP_WRLOCK: return "wrlock";
case OP_WRLOCKACK: return "wrlock_ack";
case OP_UNWRLOCK: return "unwrlock";
case OP_RMDIRPREP: return "rmdir_prep";
case OP_RMDIRPREPACK: return "rmdir_prep_ack";
case OP_DROPLOCKS: return "drop_locks";
case OP_RENAMENOTIFY: return "rename_notify";
case OP_RENAMENOTIFYACK: return "rename_notify_ack";
case OP_ABORT: return "abort";
//case OP_COMMIT: return "commit";
default: ceph_abort(); return 0;
}
}
private:
metareqid_t reqid;
__u32 attempt;
__s16 op;
mutable __u16 flags; /* XXX HACK for mark_interrupted */
static constexpr unsigned FLAG_NONBLOCK = 1<<0;
static constexpr unsigned FLAG_WOULDBLOCK = 1<<1;
static constexpr unsigned FLAG_NOTJOURNALED = 1<<2;
static constexpr unsigned FLAG_EROFS = 1<<3;
static constexpr unsigned FLAG_ABORT = 1<<4;
static constexpr unsigned FLAG_INTERRUPTED = 1<<5;
// for locking
__u16 lock_type; // lock object type
MDSCacheObjectInfo object_info;
// for authpins
vector<MDSCacheObjectInfo> authpins;
public:
// for rename prep
filepath srcdnpath;
filepath destdnpath;
set<mds_rank_t> witnesses;
bufferlist inode_export;
version_t inode_export_v;
mds_rank_t srcdn_auth;
utime_t op_stamp;
mutable bufferlist straybl; // stray dir + dentry
bufferlist srci_snapbl;
bufferlist desti_snapbl;
public:
metareqid_t get_reqid() const { return reqid; }
__u32 get_attempt() const { return attempt; }
int get_op() const { return op; }
bool is_reply() const { return op < 0; }
int get_lock_type() const { return lock_type; }
const MDSCacheObjectInfo &get_object_info() const { return object_info; }
MDSCacheObjectInfo &get_object_info() { return object_info; }
const MDSCacheObjectInfo &get_authpin_freeze() const { return object_info; }
MDSCacheObjectInfo &get_authpin_freeze() { return object_info; }
const vector<MDSCacheObjectInfo>& get_authpins() const { return authpins; }
vector<MDSCacheObjectInfo>& get_authpins() { return authpins; }
void mark_nonblock() { flags |= FLAG_NONBLOCK; }
bool is_nonblock() const { return (flags & FLAG_NONBLOCK); }
void mark_error_wouldblock() { flags |= FLAG_WOULDBLOCK; }
bool is_error_wouldblock() const { return (flags & FLAG_WOULDBLOCK); }
void mark_not_journaled() { flags |= FLAG_NOTJOURNALED; }
bool is_not_journaled() const { return (flags & FLAG_NOTJOURNALED); }
void mark_error_rofs() { flags |= FLAG_EROFS; }
bool is_error_rofs() const { return (flags & FLAG_EROFS); }
bool is_abort() const { return (flags & FLAG_ABORT); }
void mark_abort() { flags |= FLAG_ABORT; }
bool is_interrupted() const { return (flags & FLAG_INTERRUPTED); }
void mark_interrupted() const { flags |= FLAG_INTERRUPTED; }
void set_lock_type(int t) { lock_type = t; }
const bufferlist& get_lock_data() const { return inode_export; }
bufferlist& get_lock_data() { return inode_export; }
protected:
MMDSSlaveRequest() : MessageInstance(MSG_MDS_SLAVE_REQUEST) { }
MMDSSlaveRequest(metareqid_t ri, __u32 att, int o) :
MessageInstance(MSG_MDS_SLAVE_REQUEST),
reqid(ri), attempt(att), op(o), flags(0), lock_type(0),
inode_export_v(0), srcdn_auth(MDS_RANK_NONE) { }
~MMDSSlaveRequest() override {}
public:
void encode_payload(uint64_t features) override {
using ceph::encode;
encode(reqid, payload);
encode(attempt, payload);
encode(op, payload);
encode(flags, payload);
encode(lock_type, payload);
encode(object_info, payload);
encode(authpins, payload);
encode(srcdnpath, payload);
encode(destdnpath, payload);
encode(witnesses, payload);
encode(op_stamp, payload);
encode(inode_export, payload);
encode(inode_export_v, payload);
encode(srcdn_auth, payload);
encode(straybl, payload);
encode(srci_snapbl, payload);
encode(desti_snapbl, payload);
}
void decode_payload() override {
auto p = payload.cbegin();
decode(reqid, p);
decode(attempt, p);
decode(op, p);
decode(flags, p);
decode(lock_type, p);
decode(object_info, p);
decode(authpins, p);
decode(srcdnpath, p);
decode(destdnpath, p);
decode(witnesses, p);
decode(op_stamp, p);
decode(inode_export, p);
decode(inode_export_v, p);
decode(srcdn_auth, p);
decode(straybl, p);
decode(srci_snapbl, p);
decode(desti_snapbl, p);
}
std::string_view get_type_name() const override { return "slave_request"; }
void print(ostream& out) const override {
out << "slave_request(" << reqid
<< "." << attempt
<< " " << get_opname(op)
<< ")";
}
};
#endif
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