wehub-resource-sync
62 lines
1.3 KiB
Go
62 lines
1.3 KiB
Go
package log
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import (
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"io"
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"log/slog"
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)
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// IOLogger is a wrapper around io.Reader and io.Writer that can be used
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// to log the data being read and written from the underlying streams
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type IOLogger struct {
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io.ReadWriteCloser
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reader io.Reader
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writer io.Writer
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logger *slog.Logger
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}
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// NewIOLogger creates a new IOLogger instance
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func NewIOLogger(r io.Reader, w io.Writer, logger *slog.Logger) *IOLogger {
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return &IOLogger{
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reader: r,
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writer: w,
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logger: logger,
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}
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}
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// Read reads data from the underlying io.Reader and logs it.
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func (l *IOLogger) Read(p []byte) (n int, err error) {
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if l.reader == nil {
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return 0, io.EOF
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}
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n, err = l.reader.Read(p)
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if n > 0 {
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l.logger.Info("[stdin]: received bytes", "count", n, "data", string(p[:n]))
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}
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return n, err
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}
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// Write writes data to the underlying io.Writer and logs it.
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func (l *IOLogger) Write(p []byte) (n int, err error) {
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if l.writer == nil {
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return 0, io.ErrClosedPipe
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}
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l.logger.Info("[stdout]: sending bytes", "count", len(p), "data", string(p))
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return l.writer.Write(p)
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}
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func (l *IOLogger) Close() error {
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var errReader, errWriter error
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if closer, ok := l.reader.(io.Closer); ok {
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errReader = closer.Close()
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}
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if closer, ok := l.writer.(io.Closer); ok {
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errWriter = closer.Close()
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}
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if errReader != nil {
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return errReader
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}
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return errWriter
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}
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