shishengliang/lingniu-vehicle-ingest
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat: build vehicle data platform and production pipeline

Browse Source
This commit is contained in:
lingniu
2026-07-14 12:35:33 +08:00
parent b452be3b94
commit bb59303a4b
270 changed files with 88016 additions and 1975 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
go/vehicle-gateway/internal/loadsim/mutator.go
View File

@@ -7,22 +7,30 @@ import (
)
type FrameFactory struct {
protocol Protocol
base []byte
protocol Protocol
base []byte
jt808PhoneBase int64
}
func NewFrameFactory(protocol Protocol, template string) (*FrameFactory, error) {
return NewFrameFactoryWithJT808PhoneBase(protocol, template, DefaultJT808PhoneBase)
}
func NewFrameFactoryWithJT808PhoneBase(protocol Protocol, template string, phoneBase int64) (*FrameFactory, error) {
base, err := FrameTemplate(protocol, template)
if err != nil {
return nil, err
}
return &FrameFactory{protocol: protocol, base: base}, nil
if phoneBase <= 0 {
phoneBase = DefaultJT808PhoneBase
}
return &FrameFactory{protocol: protocol, base: base, jt808PhoneBase: phoneBase}, nil
}
func (f *FrameFactory) Frame(connectionIndex int, frameIndex int64) ([]byte, error) {
switch f.protocol {
case ProtocolJT808:
return mutateJT808Frame(f.base, connectionIndex, frameIndex)
return mutateJT808Frame(f.base, f.jt808PhoneBase, connectionIndex, frameIndex)
case ProtocolGB32960:
return mutateGB32960Frame(f.base, connectionIndex, frameIndex)
default:
@@ -31,7 +39,7 @@ func (f *FrameFactory) Frame(connectionIndex int, frameIndex int64) ([]byte, err
}
}
func mutateJT808Frame(base []byte, connectionIndex int, frameIndex int64) ([]byte, error) {
func mutateJT808Frame(base []byte, phoneBase int64, connectionIndex int, frameIndex int64) ([]byte, error) {
if len(base) < 2 || base[0] != 0x7e || base[len(base)-1] != 0x7e {
return nil, fmt.Errorf("jt808 template must include 0x7e delimiters")
}
@@ -42,7 +50,7 @@ func mutateJT808Frame(base []byte, connectionIndex int, frameIndex int64) ([]byt
if len(payload) < 13 {
return nil, fmt.Errorf("jt808 template too short: %d", len(payload))
}
phone := fmt.Sprintf("%012d", 139000000000+connectionIndex%100000000)
phone := fmt.Sprintf("%012d", phoneBase+int64(connectionIndex))
copy(payload[4:10], encodeBCD(phone, 6))
binary.BigEndian.PutUint16(payload[10:12], uint16((int(frameIndex)+connectionIndex)%65536))
bodySize := int(binary.BigEndian.Uint16(payload[2:4]) & 0x03ff)