add flaky and delays for testing

tracing/README.md

@@ -124,6 +124,8 @@ There is a `docker-compose.yaml`  in this directory. <br/>
 Change your terminal to this folder and run:
 
 ```
+cd tracing
+
 docker-compose build
 
 docker-compose up

tracing/applications-go/playlists-api/app.go

@@ -82,7 +82,6 @@ func main() {
 			 
 			 	span, _ := opentracing.StartSpanFromContext(ctx, "videos-api GET")
 			
-
 				v := videos{}
 
 				req, err := http.NewRequest("GET", "http://videos-api:10010/" + playlists[pi].Videos[vi].Id, nil)

tracing/applications-go/videos-api/app.go

@@ -7,9 +7,10 @@ import (
 	"github.com/go-redis/redis/v8"
 	"fmt"
 	"context"
+	"time"
+	"strings"
 	"os"
 	"math/rand"
-
 	"github.com/opentracing/opentracing-go"
 	"github.com/uber/jaeger-client-go"
 	"github.com/uber/jaeger-client-go/config"
@@ -25,6 +26,7 @@ var environment = os.Getenv("ENVIRONMENT")
 var redis_host = os.Getenv("REDIS_HOST")
 var redis_port = os.Getenv("REDIS_PORT")
 var flaky = os.Getenv("FLAKY")
+var delay = os.Getenv("DELAY")
 
 var ctx = context.Background()
 var rdb *redis.Client
@@ -66,7 +68,7 @@ func main() {
 		span := tracer.StartSpan("/id GET", ext.RPCServerOption(spanCtx))
 		defer span.Finish()
 
-		if flaky == "true"{
+		if flaky == "true" {
 			if rand.Intn(90) < 30 {
 				panic("flaky error occurred ")
 		  } 
@@ -75,6 +77,10 @@ func main() {
 		ctx := opentracing.ContextWithSpan(context.Background(), span)
 		video := video(w,r,p, ctx)
 
+		if strings.Contains(video, "jM36M39MA3I") && delay == "true" {
+					time.Sleep(6 * time.Second)
+		}
+
 		cors(w)
 		fmt.Fprintf(w, "%s", video)
 	 

tracing/docker-compose.yaml

@@ -22,6 +22,14 @@ services:
     - 81:10010
     networks:
     - tracing
+  playlists-db:
+    container_name: playlists-db
+    image: redis:6.0-alpine
+    command: [ "redis-server" , "--dir", "/tmp", "--appendonly", "yes"]
+    volumes:
+      - ./applications-go/playlists-db/appendonly.aof:/tmp/appendonly.aof
+    networks:
+    - tracing
   videos-api:
     container_name: videos-api
     image: aimvector/jaeger-tracing:videos-api-1.0.0
@@ -31,6 +39,8 @@ services:
     - "ENVIRONMENT=DEBUG"
     - "REDIS_HOST=videos-db"
     - "REDIS_PORT=6379"
+    - "DELAY=true"
+    #- "FLAKY=true"
     ports:
     - 82:10010
     networks:
@@ -43,14 +53,6 @@ services:
       - ./applications-go/videos-db/appendonly.aof:/tmp/appendonly.aof
     networks:
     - tracing
-  playlists-db:
-    container_name: playlists-db
-    image: redis:6.0-alpine
-    command: [ "redis-server" , "--dir", "/tmp", "--appendonly", "yes"]
-    volumes:
-      - ./applications-go/playlists-db/appendonly.aof:/tmp/appendonly.aof
-    networks:
-    - tracing
   jaeger:
     container_name: jaeger
     image: jaegertracing/all-in-one:latest