refactor(productcatalogservice): use go:embed directive for products.…

…json

src/productcatalogservice/Dockerfile

@@ -17,7 +17,6 @@ FROM alpine AS release
 
 WORKDIR /usr/src/app/
 
-COPY ./src/productcatalogservice/products.json ./
 COPY --from=builder /go/bin/productcatalogservice/ ./
 
 EXPOSE ${PRODUCT_SERVICE_PORT}

src/productcatalogservice/main.go

@@ -8,9 +8,9 @@ package main
 
 import (
 	"context"
+	_ "embed"
 	"fmt"
 	"go.opentelemetry.io/otel/sdk/instrumentation"
-	"io/ioutil"
 	"net"
 	"os"
 	"strings"
@@ -50,6 +50,9 @@ var (
 	initResourcesOnce sync.Once
 )
 
+//go:embed products.json
+var products []byte
+
 func init() {
 	log = logrus.New()
 	catalog = readCatalogFile()
@@ -157,13 +160,8 @@ type productCatalog struct {
 }
 
 func readCatalogFile() []*pb.Product {
-	catalogJSON, err := ioutil.ReadFile("products.json")
-	if err != nil {
-		log.Fatalf("Reading Catalog File: %v", err)
-	}
-
 	var res pb.ListProductsResponse
-	if err := protojson.Unmarshal(catalogJSON, &res); err != nil {
+	if err := protojson.Unmarshal(products, &res); err != nil {
 		log.Fatalf("Parsing Catalog JSON: %v", err)
 	}