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add iologger for debugging purposes#15
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| package log | ||
| import ( | ||
| "io" | ||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
| // IOLogger is a wrapper around io.Reader and io.Writer that can be used | ||
| // to log the data being read and written from the underlying streams | ||
| type IOLogger struct { | ||
| reader io.Reader | ||
| writer io.Writer | ||
| logger *log.Logger | ||
| } | ||
| // NewIOLogger creates a new IOLogger instance | ||
| func NewIOLogger(r io.Reader, w io.Writer, logger *log.Logger) *IOLogger { | ||
| return &IOLogger{ | ||
| reader: r, | ||
| writer: w, | ||
| logger: logger, | ||
| } | ||
| } | ||
| // Read reads data from the underlying io.Reader and logs it. | ||
| func (l *IOLogger) Read(p []byte) (n int, err error) { | ||
| if l.reader == nil { | ||
| return 0, io.EOF | ||
| } | ||
| n, err = l.reader.Read(p) | ||
| if n > 0 { | ||
| l.logger.Infof("[stdin]: received %d bytes: %s", n, string(p[:n])) | ||
| } | ||
| return n, err | ||
| } | ||
| // Write writes data to the underlying io.Writer and logs it. | ||
| func (l *IOLogger) Write(p []byte) (n int, err error) { | ||
| if l.writer == nil { | ||
| return 0, io.ErrClosedPipe | ||
| } | ||
| l.logger.Infof("[stdout]: sending %d bytes: %s", len(p), string(p)) | ||
| return l.writer.Write(p) | ||
| } |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| package log | ||
| import ( | ||
| "bytes" | ||
| "strings" | ||
| "testing" | ||
| log "github.com/sirupsen/logrus" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
| func TestLoggedReadWriter(t *testing.T) { | ||
| t.Run("Read method logs and passes data", func(t *testing.T) { | ||
| // Setup | ||
| inputData := "test input data" | ||
| reader := strings.NewReader(inputData) | ||
| // Create logger with buffer to capture output | ||
| var logBuffer bytes.Buffer | ||
| logger := log.New() | ||
| logger.SetOutput(&logBuffer) | ||
| logger.SetFormatter(&log.TextFormatter{ | ||
| DisableTimestamp: true, | ||
| }) | ||
| lrw := NewIOLogger(reader, nil, logger) | ||
| // Test Read | ||
| buf := make([]byte, 100) | ||
| n, err := lrw.Read(buf) | ||
| // Assertions | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, len(inputData), n) | ||
| assert.Equal(t, inputData, string(buf[:n])) | ||
| assert.Contains(t, logBuffer.String(), "[stdin]") | ||
| assert.Contains(t, logBuffer.String(), inputData) | ||
| }) | ||
| t.Run("Write method logs and passes data", func(t *testing.T) { | ||
| // Setup | ||
| outputData := "test output data" | ||
| var writeBuffer bytes.Buffer | ||
| // Create logger with buffer to capture output | ||
| var logBuffer bytes.Buffer | ||
| logger := log.New() | ||
| logger.SetOutput(&logBuffer) | ||
| logger.SetFormatter(&log.TextFormatter{ | ||
| DisableTimestamp: true, | ||
| }) | ||
| lrw := NewIOLogger(nil, &writeBuffer, logger) | ||
| // Test Write | ||
| n, err := lrw.Write([]byte(outputData)) | ||
| // Assertions | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, len(outputData), n) | ||
| assert.Equal(t, outputData, writeBuffer.String()) | ||
| assert.Contains(t, logBuffer.String(), "[stdout]") | ||
| assert.Contains(t, logBuffer.String(), outputData) | ||
| }) | ||
| } |
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