mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-01 19:39:21 +08:00
79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software distributed under the License
|
|
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
|
|
// or implied. See the License for the specific language governing permissions and limitations under the License.
|
|
|
|
package storage
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"io"
|
|
"time"
|
|
|
|
"github.com/milvus-io/milvus/internal/util/tsoutil"
|
|
"github.com/milvus-io/milvus/internal/util/typeutil"
|
|
)
|
|
|
|
type baseEventHeader struct {
|
|
Timestamp typeutil.Timestamp
|
|
TypeCode EventTypeCode
|
|
EventLength int32
|
|
NextPosition int32
|
|
}
|
|
|
|
func (header *baseEventHeader) GetMemoryUsageInBytes() int32 {
|
|
return int32(binary.Size(header))
|
|
}
|
|
|
|
func (header *baseEventHeader) Write(buffer io.Writer) error {
|
|
return binary.Write(buffer, binary.LittleEndian, header)
|
|
}
|
|
|
|
type descriptorEventHeader = baseEventHeader
|
|
|
|
type eventHeader struct {
|
|
baseEventHeader
|
|
}
|
|
|
|
func readEventHeader(buffer io.Reader) (*eventHeader, error) {
|
|
header := &eventHeader{}
|
|
if err := binary.Read(buffer, binary.LittleEndian, header); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return header, nil
|
|
}
|
|
|
|
func readDescriptorEventHeader(buffer io.Reader) (*descriptorEventHeader, error) {
|
|
header := &descriptorEventHeader{}
|
|
if err := binary.Read(buffer, binary.LittleEndian, header); err != nil {
|
|
return nil, err
|
|
}
|
|
return header, nil
|
|
}
|
|
|
|
func newDescriptorEventHeader() *descriptorEventHeader {
|
|
header := descriptorEventHeader{
|
|
Timestamp: tsoutil.ComposeTS(time.Now().UnixNano()/int64(time.Millisecond), 0),
|
|
TypeCode: DescriptorEventType,
|
|
}
|
|
return &header
|
|
}
|
|
|
|
func newEventHeader(eventTypeCode EventTypeCode) *eventHeader {
|
|
return &eventHeader{
|
|
baseEventHeader: baseEventHeader{
|
|
Timestamp: tsoutil.ComposeTS(time.Now().UnixNano()/int64(time.Millisecond), 0),
|
|
TypeCode: eventTypeCode,
|
|
EventLength: -1,
|
|
NextPosition: -1,
|
|
},
|
|
}
|
|
}
|