add specific log files per binary

cmd/africastalking/main.go

@@ -1,9 +1,13 @@
 package main
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"flag"
 	"fmt"
+	"io"
+	"log"
 	"net/http"
 	"os"
 	"os/signal"
@@ -27,10 +31,27 @@ import (
 var (
 	logg      = logging.NewVanilla()
 	scriptDir = path.Join("services", "registration")
+	WarningLogger *log.Logger
+	InfoLogger    *log.Logger
+	ErrorLogger   *log.Logger
 )
 
 func init() {
 	initializers.LoadEnvVariables()
+
+	logFile := "urdt-ussd-africastalking.log"
+
+	file, err := os.OpenFile(logFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0666)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	InfoLogger = log.New(file, "INFO: ", log.Ldate|log.Ltime|log.Lshortfile)
+	ErrorLogger = log.New(file, "ERROR: ", log.Ldate|log.Ltime|log.Lshortfile)
+
+	// Inject into remote package
+	remote.InfoLogger = InfoLogger
+	remote.ErrorLogger = ErrorLogger
 }
 
 type atRequestParser struct{}
@@ -38,9 +59,30 @@ type atRequestParser struct{}
 func (arp *atRequestParser) GetSessionId(rq any) (string, error) {
 	rqv, ok := rq.(*http.Request)
 	if !ok {
+		ErrorLogger.Println("got an invalid request:", rq)
 		return "", handlers.ErrInvalidRequest
 	}
+
+	// Capture body (if any) for logging
+	body, err := io.ReadAll(rqv.Body)
+	if err != nil {
+		ErrorLogger.Println("failed to read request body:", err)
+		return "", fmt.Errorf("failed to read request body: %v", err)
+	}
+	// Reset the body for further reading
+	rqv.Body = io.NopCloser(bytes.NewReader(body))
+
+	// Log the body as JSON
+	bodyLog := map[string]string{"body": string(body)}
+	logBytes, err := json.Marshal(bodyLog)
+	if err != nil {
+		ErrorLogger.Println("failed to marshal request body:", err)
+	} else {
+		InfoLogger.Println("Received request:", string(logBytes))
+	}
+
 	if err := rqv.ParseForm(); err != nil {
+		ErrorLogger.Println("failed to parse form data: %v", err)
 		return "", fmt.Errorf("failed to parse form data: %v", err)
 	}