feat(services): Logging

services/converter.go

@@ -8,6 +8,7 @@ import (
 	"strconv"
 
 	"github.com/oxplot/papersizes"
+	"go.uber.org/zap"
 )
 
 type Converter interface {
@@ -16,92 +17,115 @@ type Converter interface {
 
 type GotenbergConverter struct {
 	BaseUrl string
+	Logger  *zap.SugaredLogger
 }
 
 func (g *GotenbergConverter) ToPdf(html string, pageSize string, landscape bool) ([]byte, error) {
+	logger := g.Logger.Named("ToPdf").With("page_size", pageSize, "landscape", landscape, "base_url", g.BaseUrl)
+
 	client := &http.Client{}
 	defer client.CloseIdleConnections()
+	logger.Debug("Created HTTP client")
 
 	body := &bytes.Buffer{}
 	writer := multipart.NewWriter(body)
 
 	part, err := writer.CreateFormFile("files", "index.html")
 	if err != nil {
+		logger.Errorw("Failed to create form file", "error", err)
 		return nil, err
 	}
 
 	_, err = part.Write([]byte(html))
 	if err != nil {
+		logger.Errorw("Failed to write to form file", "error", err)
 		return nil, err
 	}
 
 	size := papersizes.FromName(pageSize)
 	if size == nil {
+		logger.Errorw("Invalid page size", "size", pageSize)
 		return nil, fmt.Errorf("invalid page size: %s", pageSize)
 	}
 
 	err = writer.WriteField("paperWidth", strconv.Itoa(size.Width)+"mm")
 	if err != nil {
+		logger.Errorw("Failed to write paper width", "error", err)
 		return nil, err
 	}
 
 	err = writer.WriteField("paperHeight", strconv.Itoa(size.Height)+"mm")
 	if err != nil {
+		logger.Errorw("Failed to write paper height", "error", err)
 		return nil, err
 	}
 
 	err = writer.WriteField("landscape", strconv.FormatBool(landscape))
 	if err != nil {
+		logger.Errorw("Failed to write landscape", "error", err)
 		return nil, err
 	}
 
 	err = writer.WriteField("marginTop", "0")
 	if err != nil {
+		logger.Errorw("Failed to write margin top", "error", err)
 		return nil, err
 	}
 
 	err = writer.WriteField("marginBottom", "0")
 	if err != nil {
+		logger.Errorw("Failed to write margin bottom", "error", err)
 		return nil, err
 	}
 
 	err = writer.WriteField("marginLeft", "0")
 	if err != nil {
+		logger.Errorw("Failed to write margin left", "error", err)
 		return nil, err
 	}
 
 	err = writer.WriteField("marginRight", "0")
 	if err != nil {
+		logger.Errorw("Failed to write margin right", "error", err)
 		return nil, err
 	}
 
 	err = writer.WriteField("preferCssPageSize", "true")
 	if err != nil {
+		logger.Errorw("Failed to write prefer css page size", "error", err)
 		return nil, err
 	}
 
 	err = writer.Close()
 	if err != nil {
+		logger.Errorw("Failed to close writer", "error", err)
 		return nil, err
 	}
+	logger.Debug("Created form data")
 
+	logger.Debug("Creating HTTP request")
 	req, err := http.NewRequest("POST", g.BaseUrl+"/forms/chromium/convert/html", body)
 	if err != nil {
 		return nil, err
 	}
 	req.Header.Set("Content-Type", writer.FormDataContentType())
 
+	logger.Debug("Sending HTTP request")
 	resp, err := client.Do(req)
 	if err != nil {
+		logger.Errorw("Failed to send request", "error", err)
 		return nil, err
 	}
+	logger.Debug("Received HTTP response")
 
 	defer resp.Body.Close()
 	data := new(bytes.Buffer)
 	_, err = data.ReadFrom(resp.Body)
 	if err != nil {
+		logger.Errorw("Failed to read response body", "error", err)
 		return nil, err
 	}
 
+	logger.Debug("Returning PDF data")
 	return data.Bytes(), nil
 }