mirror of
https://github.com/cubefs/cubefs.git
synced 2026-08-02 02:00:56 +00:00
120 lines
3.1 KiB
Go
120 lines
3.1 KiB
Go
// Copyright 2018 The CubeFS Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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package flashnode
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import (
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"io"
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"syscall"
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"time"
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"github.com/cubefs/cubefs/proto"
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"github.com/cubefs/cubefs/util"
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"github.com/cubefs/cubefs/util/errors"
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"github.com/cubefs/cubefs/util/log"
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)
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type Packet struct {
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proto.Packet
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}
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func (p *Packet) ReadFromReader(reader io.Reader) (err error) {
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header, err := proto.Buffers.Get(util.PacketHeaderSize)
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if err != nil {
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header = make([]byte, util.PacketHeaderSize)
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}
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defer proto.Buffers.Put(header)
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var n int
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if n, err = io.ReadFull(reader, header); err != nil {
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return
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}
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if n != util.PacketHeaderSize {
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return syscall.EBADMSG
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}
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if err = p.UnmarshalHeader(header); err != nil {
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return
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}
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if p.ArgLen > 0 {
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p.Arg = make([]byte, int(p.ArgLen))
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if _, err = io.ReadFull(reader, p.Arg[:int(p.ArgLen)]); err != nil {
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return err
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}
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}
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size := p.Size
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if (p.Opcode == proto.OpRead || p.Opcode == proto.OpStreamRead || p.Opcode == proto.OpExtentRepairRead || p.Opcode == proto.OpStreamFollowerRead) && p.ResultCode == proto.OpInitResultCode {
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size = 0
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}
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var buffErr error
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if p.Data, buffErr = proto.Buffers.Get(int(size)); buffErr != nil {
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p.Data = make([]byte, size)
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}
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if n, err = io.ReadFull(reader, p.Data[:size]); err != nil {
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return err
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}
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if n != int(size) {
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return syscall.EBADMSG
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}
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return nil
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}
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func NewPacket() *Packet {
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p := &Packet{}
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p.Magic = proto.ProtoMagic
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p.StartT = time.Now().UnixNano()
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return p
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}
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func NewCacheReply() *Packet {
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p := new(Packet)
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p.Magic = proto.ProtoMagic
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return p
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}
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func NewPreparePacket() *Packet {
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p := new(Packet)
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p.Magic = proto.ProtoMagic
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p.ReqID = proto.GenerateRequestID()
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p.Opcode = proto.OpCachePrepare
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return p
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}
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func MarshalCachePrepareRequestToPacket(req *proto.CachePrepareRequest) (packet *Packet, err error) {
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packet = NewPreparePacket()
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if err = packet.MarshalDataPb(req); err != nil {
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log.LogWarnf("MarshalCachePrepareRequestToPacket: failed to MarshalDataPb (%+v). err(%v)", packet, err)
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return
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}
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return packet, err
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}
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func UnMarshalPacketToCachePrepare(p *Packet) (req *proto.CachePrepareRequest, err error) {
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req = &proto.CachePrepareRequest{}
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if err = p.UnmarshalDataPb(req); err != nil {
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err = errors.NewErrorf("UnmarshalDataPb data length[%v] err[%v]", len(p.Data), err)
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return
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}
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return
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}
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func UnMarshalPacketToCacheRead(p *Packet) (req *proto.CacheReadRequest, err error) {
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req = &proto.CacheReadRequest{}
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if err = p.UnmarshalDataPb(req); err != nil {
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err = errors.NewErrorf("UnmarshalDataPb data length[%v] err[%v]", len(p.Data), err)
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return
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}
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return
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}
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