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Diffstat (limited to 'vendor/github.com/jackc/pgproto3/v2/notification_response.go')
-rw-r--r--vendor/github.com/jackc/pgproto3/v2/notification_response.go73
1 files changed, 73 insertions, 0 deletions
diff --git a/vendor/github.com/jackc/pgproto3/v2/notification_response.go b/vendor/github.com/jackc/pgproto3/v2/notification_response.go
new file mode 100644
index 000000000..e762eb967
--- /dev/null
+++ b/vendor/github.com/jackc/pgproto3/v2/notification_response.go
@@ -0,0 +1,73 @@
+package pgproto3
+
+import (
+ "bytes"
+ "encoding/binary"
+ "encoding/json"
+
+ "github.com/jackc/pgio"
+)
+
+type NotificationResponse struct {
+ PID uint32
+ Channel string
+ Payload string
+}
+
+// Backend identifies this message as sendable by the PostgreSQL backend.
+func (*NotificationResponse) 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 *NotificationResponse) Decode(src []byte) error {
+ buf := bytes.NewBuffer(src)
+
+ pid := binary.BigEndian.Uint32(buf.Next(4))
+
+ b, err := buf.ReadBytes(0)
+ if err != nil {
+ return err
+ }
+ channel := string(b[:len(b)-1])
+
+ b, err = buf.ReadBytes(0)
+ if err != nil {
+ return err
+ }
+ payload := string(b[:len(b)-1])
+
+ *dst = NotificationResponse{PID: pid, Channel: channel, Payload: payload}
+ return nil
+}
+
+// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
+func (src *NotificationResponse) Encode(dst []byte) []byte {
+ dst = append(dst, 'A')
+ sp := len(dst)
+ dst = pgio.AppendInt32(dst, -1)
+
+ dst = pgio.AppendUint32(dst, src.PID)
+ dst = append(dst, src.Channel...)
+ dst = append(dst, 0)
+ dst = append(dst, src.Payload...)
+ dst = append(dst, 0)
+
+ pgio.SetInt32(dst[sp:], int32(len(dst[sp:])))
+
+ return dst
+}
+
+// MarshalJSON implements encoding/json.Marshaler.
+func (src NotificationResponse) MarshalJSON() ([]byte, error) {
+ return json.Marshal(struct {
+ Type string
+ PID uint32
+ Channel string
+ Payload string
+ }{
+ Type: "NotificationResponse",
+ PID: src.PID,
+ Channel: src.Channel,
+ Payload: src.Payload,
+ })
+}