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62 lines
1.4 KiB
62 lines
1.4 KiB
package pgproto3 |
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import ( |
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"encoding/hex" |
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"encoding/json" |
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"github.com/jackc/pgio" |
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) |
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type CopyData struct { |
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Data []byte |
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} |
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// Backend identifies this message as sendable by the PostgreSQL backend. |
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func (*CopyData) Backend() {} |
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// Frontend identifies this message as sendable by a PostgreSQL frontend. |
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func (*CopyData) Frontend() {} |
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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 *CopyData) Decode(src []byte) error { |
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dst.Data = src |
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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 *CopyData) Encode(dst []byte) []byte { |
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dst = append(dst, 'd') |
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dst = pgio.AppendInt32(dst, int32(4+len(src.Data))) |
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dst = append(dst, src.Data...) |
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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 CopyData) MarshalJSON() ([]byte, error) { |
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return json.Marshal(struct { |
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Type string |
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Data string |
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}{ |
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Type: "CopyData", |
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Data: hex.EncodeToString(src.Data), |
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}) |
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} |
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// UnmarshalJSON implements encoding/json.Unmarshaler. |
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func (dst *CopyData) UnmarshalJSON(data []byte) error { |
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// Ignore null, like in the main JSON package. |
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if string(data) == "null" { |
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return nil |
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} |
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var msg struct { |
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Data string |
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} |
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if err := json.Unmarshal(data, &msg); err != nil { |
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return err |
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} |
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dst.Data = []byte(msg.Data) |
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return nil |
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}
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