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