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all: Implement variable sized blocks (fixes #4807)

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This commit is contained in:
Jakob Borg
2018-04-16 20:08:50 +02:00
committed by Audrius Butkevicius
parent 01aef75c96
commit 19c7cd99f5
27 changed files with 536 additions and 293 deletions
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23
lib/protocol/bep_extensions.go
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@@ -14,16 +14,11 @@ import (
"time"
"github.com/syncthing/syncthing/lib/rand"
"github.com/syncthing/syncthing/lib/sha256"
)
const (
SyntheticDirectorySize = 128
)
var (
sha256OfEmptyBlock = sha256.Sum256(make([]byte, BlockSize))
HelloMessageMagic = uint32(0x2EA7D90B)
HelloMessageMagic = uint32(0x2EA7D90B)
)
func (m Hello) Magic() uint32 {
@@ -36,8 +31,8 @@ func (f FileInfo) String() string {
return fmt.Sprintf("Directory{Name:%q, Sequence:%d, Permissions:0%o, ModTime:%v, Version:%v, Deleted:%v, Invalid:%v, NoPermissions:%v}",
f.Name, f.Sequence, f.Permissions, f.ModTime(), f.Version, f.Deleted, f.Invalid, f.NoPermissions)
case FileInfoTypeFile:
return fmt.Sprintf("File{Name:%q, Sequence:%d, Permissions:0%o, ModTime:%v, Version:%v, Length:%d, Deleted:%v, Invalid:%v, NoPermissions:%v, Blocks:%v}",
f.Name, f.Sequence, f.Permissions, f.ModTime(), f.Version, f.Size, f.Deleted, f.Invalid, f.NoPermissions, f.Blocks)
return fmt.Sprintf("File{Name:%q, Sequence:%d, Permissions:0%o, ModTime:%v, Version:%v, Length:%d, Deleted:%v, Invalid:%v, NoPermissions:%v, BlockSize:%d, Blocks:%v}",
f.Name, f.Sequence, f.Permissions, f.ModTime(), f.Version, f.Size, f.Deleted, f.Invalid, f.NoPermissions, f.RawBlockSize, f.Blocks)
case FileInfoTypeSymlink, FileInfoTypeDeprecatedSymlinkDirectory, FileInfoTypeDeprecatedSymlinkFile:
return fmt.Sprintf("Symlink{Name:%q, Type:%v, Sequence:%d, Version:%v, Deleted:%v, Invalid:%v, NoPermissions:%v, SymlinkTarget:%q}",
f.Name, f.Type, f.Sequence, f.Version, f.Deleted, f.Invalid, f.NoPermissions, f.SymlinkTarget)
@@ -81,6 +76,13 @@ func (f FileInfo) FileSize() int64 {
return f.Size
}
func (f FileInfo) BlockSize() int {
if f.RawBlockSize == 0 {
return MinBlockSize
}
return int(f.RawBlockSize)
}
func (f FileInfo) FileName() string {
return f.Name
}
@@ -204,7 +206,10 @@ func (b BlockInfo) String() string {
// IsEmpty returns true if the block is a full block of zeroes.
func (b BlockInfo) IsEmpty() bool {
return b.Size == BlockSize && bytes.Equal(b.Hash, sha256OfEmptyBlock[:])
if v, ok := sha256OfEmptyBlock[int(b.Size)]; ok {
return bytes.Equal(b.Hash, v[:])
}
return false
}
type IndexID uint64