Updating challenges and example ecommerce app code.

challenges.md

@@ -1,14 +1,18 @@
 # Challenges
 
-- Instrumenting using APM: https://learn.datadoghq.com/courses/take/intro-to-apm/texts/35843479-lab-instrumenting-an-app-for-datadog-apm
-  - Monitoring Performance: https://learn.datadoghq.com/courses/take/intro-to-apm/texts/35844827-lab-monitoring-app-performance-with-apm
+- Configure Log collection for a containerized application: https://learn.datadoghq.com/courses/take/log-config-docker/texts/54199132-lab-configure-logging-and-log-collection-for-a-containerized-app
 
-- Better Tagging: https://learn.datadoghq.com/courses/take/tagging-best-practices/texts/35811424-lab-tagging-an-application-service
+- Build & manage a log pipeline: https://learn.datadoghq.com/courses/take/log-pipelines/texts/51586134-lab-build-and-manage-a-log-pipeline
 
-- Configure Log collection for a containerized application: https://learn.datadoghq.com/courses/take/log-config-docker/texts/54199132-lab-configure-logging-and-log-collection-for-a-containerized-app
+- Instrumenting using APM: https://learn.datadoghq.com/courses/take/intro-to-apm/texts/35843479-lab-instrumenting-an-app-for-datadog-apm
+  - Monitoring Performance: https://learn.datadoghq.com/courses/take/intro-to-apm/texts/35844827-lab-monitoring-app-performance-with-apm
 
 - Tracing & Spans: https://learn.datadoghq.com/courses/take/create-custom-spans-and-tags/texts/50365658-lab-creating-spans-and-span-tags
 
 - Database Monitoring: https://learn.datadoghq.com/courses/take/database-monitoring/texts/43408007-database-monitoring-lab
 
 - Dashboard Setup: https://learn.datadoghq.com/courses/take/dashboards-slos/texts/48964609-creating-an-executive-dashboard
+
+## Optional
+
+- Better Tagging: https://learn.datadoghq.com/courses/take/tagging-best-practices/texts/35811424-lab-tagging-an-application-service

rvstore/orders/cmd/server/main.go

@@ -6,12 +6,13 @@ import (
 	"os"
 	"strings"
 
+	"github.com/gorilla/handlers"
+	log "github.com/sirupsen/logrus"
+
 	"agarwalconsulting.io/rvstore/orders/pkg/endpoints"
 	"agarwalconsulting.io/rvstore/orders/pkg/repository"
 	"agarwalconsulting.io/rvstore/orders/pkg/service"
 	"agarwalconsulting.io/rvstore/orders/pkg/transport"
-	"github.com/gorilla/handlers"
-	log "github.com/sirupsen/logrus"
 )
 
 var (
@@ -20,6 +21,8 @@ var (
 )
 
 func init() {
+	log.SetFormatter(&log.JSONFormatter{})
+
 	var ok bool
 	mongoURL, ok = os.LookupEnv("MONGO_DB_URL")
 	if !ok {

rvstore/products/cmd/server/service/service.go

@@ -37,8 +37,16 @@ var appdashAddr = fs.String("appdash-addr", "", "Enable Appdash tracing via an A
 func Run() {
 	fs.Parse(os.Args[1:])
 
+	f, err := os.OpenFile("./logs/products.log", os.O_RDWR|os.O_APPEND|os.O_CREATE, 0644)
+
+	if err != nil {
+		fmt.Println("Unable to open log file:", err)
+		return
+	}
+	defer f.Close()
+
 	// Create a single logger, which we'll use and give to other components.
-	logger = log.NewLogfmtLogger(os.Stderr)
+	logger = log.NewLogfmtLogger(f)
 	logger = log.With(logger, "ts", log.DefaultTimestampUTC)
 	logger = log.With(logger, "caller", log.DefaultCaller)