use unique contexts (#41)

Author: terakilobyte

source/includes/fundamentals/code-snippets/srv.go

@@ -3,7 +3,6 @@ package main
 import (
 	"context"
 	"fmt"
-	"time"
 
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
@@ -14,23 +13,20 @@ import (
 const uri = "mongodb://user:[email protected]:27017/?maxPoolSize=20&w=majority"
 
 func main() {
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	defer cancel()
-
 	// Create a new client and connect to the server
-	client, err := mongo.Connect(ctx, options.Client().ApplyURI(uri))
+	client, err := mongo.Connect(context.TODO(), options.Client().ApplyURI(uri))
 
 	if err != nil {
 		panic(err)
 	}
 	defer func() {
-		if err = client.Disconnect(ctx); err != nil {
+		if err = client.Disconnect(context.TODO()); err != nil {
 			panic(err)
 		}
 	}()
 
 	// Ping the primary
-	if err := client.Ping(ctx, readpref.Primary()); err != nil {
+	if err := client.Ping(context.TODO(), readpref.Primary()); err != nil {
 		panic(err)
 	}
 

source/includes/quick-start/main.go

@@ -13,20 +13,19 @@ import (
 )
 
 func main() {
-	ctx := context.TODO()
 	uri := os.Getenv("MONGODB_URI")
 	if uri == "" {
 		log.Panic(`'uri' is empty. Ensure you set the 'MONGODB_URI'
 		environment variable, or set the value of 'uri' to your
 		Atlas connection string.`)
 	}
-	client, err := mongo.Connect(ctx, options.Client().ApplyURI(uri))
+	client, err := mongo.Connect(context.TODO(), options.Client().ApplyURI(uri))
 	if err != nil {
 		log.Panic(err)
 	}
 
 	defer func() {
-		if err := client.Disconnect(ctx); err != nil {
+		if err := client.Disconnect(context.TODO()); err != nil {
 			log.Panic(err)
 		}
 	}()
@@ -35,7 +34,7 @@ func main() {
 	title := "Back to the Future"
 
 	var result bson.M
-	err = coll.FindOne(ctx, bson.D{{"title", title}}).Decode(&result)
+	err = coll.FindOne(context.TODO(), bson.D{{"title", title}}).Decode(&result)
 	if err == mongo.ErrNoDocuments {
 		fmt.Printf("No document was found with the title %s\n", title)
 		return