forked from Shiloh/githaven
b6a95a8cb3
* Dropped unused codekit config * Integrated dynamic and static bindata for public * Ignore public bindata * Add a general generate make task * Integrated flexible public assets into web command * Updated vendoring, added all missiong govendor deps * Made the linter happy with the bindata and dynamic code * Moved public bindata definition to modules directory * Ignoring the new bindata path now * Updated to the new public modules import path * Updated public bindata command and drop the new prefix
134 lines
2.6 KiB
Go
134 lines
2.6 KiB
Go
package themis
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/binary"
|
|
"io"
|
|
|
|
"github.com/juju/errors"
|
|
"github.com/pingcap/go-hbase"
|
|
"github.com/pingcap/go-hbase/iohelper"
|
|
)
|
|
|
|
var (
|
|
_ Lock = (*themisPrimaryLock)(nil)
|
|
_ Lock = (*themisSecondaryLock)(nil)
|
|
)
|
|
|
|
type themisLock struct {
|
|
// lock coordinate, table, row, cf, q
|
|
coordinate *hbase.ColumnCoordinate
|
|
// lock type: put/delete/minimal(lock only)
|
|
typ hbase.Type
|
|
// prewrite ts
|
|
ts uint64
|
|
// not used, for alignment
|
|
wallTs uint64
|
|
// not used, for alignment
|
|
clientAddr string
|
|
expired bool
|
|
}
|
|
|
|
func (l *themisLock) Timestamp() uint64 {
|
|
return l.ts
|
|
}
|
|
|
|
func (l *themisLock) IsExpired() bool {
|
|
return l.expired
|
|
}
|
|
|
|
func (l *themisLock) SetExpired(b bool) {
|
|
l.expired = b
|
|
}
|
|
|
|
func (l *themisLock) SetCoordinate(c *hbase.ColumnCoordinate) {
|
|
l.coordinate = c
|
|
}
|
|
|
|
func (l *themisLock) Coordinate() *hbase.ColumnCoordinate {
|
|
return l.coordinate
|
|
}
|
|
|
|
func (l *themisLock) Context() interface{} {
|
|
return nil
|
|
}
|
|
|
|
func (l *themisLock) Type() hbase.Type {
|
|
return l.typ
|
|
}
|
|
|
|
func (l *themisLock) write(w io.Writer) {
|
|
binary.Write(w, binary.BigEndian, byte(l.typ))
|
|
binary.Write(w, binary.BigEndian, int64(l.ts))
|
|
// write client addr
|
|
iohelper.WriteVarBytes(w, []byte(l.clientAddr))
|
|
binary.Write(w, binary.BigEndian, int64(l.wallTs))
|
|
}
|
|
|
|
func (l *themisLock) parse(r iohelper.ByteMultiReader) error {
|
|
// read type
|
|
var typ uint8
|
|
err := binary.Read(r, binary.BigEndian, &typ)
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
l.typ = hbase.Type(typ)
|
|
|
|
// read ts
|
|
var ts int64
|
|
err = binary.Read(r, binary.BigEndian, &ts)
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
l.ts = uint64(ts)
|
|
|
|
// read client addr
|
|
sz, err := binary.ReadUvarint(r)
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
addr := make([]byte, sz)
|
|
r.Read(addr)
|
|
l.clientAddr = string(addr)
|
|
|
|
// read wall time
|
|
var wallTs int64
|
|
err = binary.Read(r, binary.BigEndian, &wallTs)
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
l.wallTs = uint64(wallTs)
|
|
return nil
|
|
}
|
|
|
|
func parseLockFromBytes(b []byte) (Lock, error) {
|
|
buf := bytes.NewBuffer(b)
|
|
var isPrimary uint8
|
|
err := binary.Read(buf, binary.BigEndian, &isPrimary)
|
|
if err != nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
var ret Lock
|
|
if isPrimary == 1 {
|
|
l := newThemisPrimaryLock()
|
|
err = l.parse(buf)
|
|
ret = l
|
|
} else {
|
|
l := newThemisSecondaryLock()
|
|
err = l.parse(buf)
|
|
ret = l
|
|
}
|
|
if err != nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
return ret, nil
|
|
}
|
|
|
|
func isLockResult(r *hbase.ResultRow) bool {
|
|
return len(r.SortedColumns) > 0 && isLockColumn(r.SortedColumns[0].Column)
|
|
}
|
|
|
|
func isLockColumn(c hbase.Column) bool {
|
|
return bytes.Compare(c.Family, LockFamilyName) == 0
|
|
}
|