52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
package pgproto3
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"encoding/json"
|
|
|
|
"github.com/jackc/pgio"
|
|
)
|
|
|
|
type BackendKeyData struct {
|
|
ProcessID uint32
|
|
SecretKey uint32
|
|
}
|
|
|
|
// Backend identifies this message as sendable by the PostgreSQL backend.
|
|
func (*BackendKeyData) Backend() {}
|
|
|
|
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
|
|
// type identifier and 4 byte message length.
|
|
func (dst *BackendKeyData) Decode(src []byte) error {
|
|
if len(src) != 8 {
|
|
return &invalidMessageLenErr{messageType: "BackendKeyData", expectedLen: 8, actualLen: len(src)}
|
|
}
|
|
|
|
dst.ProcessID = binary.BigEndian.Uint32(src[:4])
|
|
dst.SecretKey = binary.BigEndian.Uint32(src[4:])
|
|
|
|
return nil
|
|
}
|
|
|
|
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
|
|
func (src *BackendKeyData) Encode(dst []byte) []byte {
|
|
dst = append(dst, 'K')
|
|
dst = pgio.AppendUint32(dst, 12)
|
|
dst = pgio.AppendUint32(dst, src.ProcessID)
|
|
dst = pgio.AppendUint32(dst, src.SecretKey)
|
|
return dst
|
|
}
|
|
|
|
// MarshalJSON implements encoding/json.Marshaler.
|
|
func (src BackendKeyData) MarshalJSON() ([]byte, error) {
|
|
return json.Marshal(struct {
|
|
Type string
|
|
ProcessID uint32
|
|
SecretKey uint32
|
|
}{
|
|
Type: "BackendKeyData",
|
|
ProcessID: src.ProcessID,
|
|
SecretKey: src.SecretKey,
|
|
})
|
|
}
|