go: update code to more modern version

Signed-off-by: Victor Login <batazor@evrone.com>

bindings/go/http/batch/app.go

@@ -20,7 +20,7 @@ dapr run --app-id batch-http --app-port 6003 --dapr-http-port 3503 --dapr-grpc-p
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -56,7 +56,7 @@ func processBatch(w http.ResponseWriter, r *http.Request) {
 
 	defer fileContent.Close()
 
-	byteResult, _ := ioutil.ReadAll(fileContent)
+	byteResult, _ := io.ReadAll(fileContent)
 
 	var orders Orders
 

bindings/go/sdk/batch/app.go

@@ -21,7 +21,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -57,7 +57,7 @@ func processBatch(w http.ResponseWriter, r *http.Request) {
 
 	defer fileContent.Close()
 
-	byteResult, _ := ioutil.ReadAll(fileContent)
+	byteResult, _ := io.ReadAll(fileContent)
 
 	var orders Orders
 

configuration/go/http/order-processor/app.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -39,7 +39,7 @@ func main() {
 			fmt.Print("Could not get config item, err:" + err.Error())
 			os.Exit(1)
 		}
-		result, _ := ioutil.ReadAll(getResponse.Body)
+		result, _ := io.ReadAll(getResponse.Body)
 		fmt.Println("Configuration for "+item+":", string(result))
 	}
 
@@ -69,7 +69,7 @@ func subscribeToConfigUpdates(subscriptionId *string) {
 		fmt.Println("Error subscribing to config updates, err:" + err.Error())
 		os.Exit(1)
 	}
-	sub, err := ioutil.ReadAll(subscription.Body)
+	sub, err := io.ReadAll(subscription.Body)
 	if err != nil {
 		fmt.Print("Unable to read subscription id, err: " + err.Error())
 		os.Exit(1)
@@ -115,7 +115,7 @@ func unsubscribeFromConfigUpdates(subscriptionId string) {
 	if err != nil {
 		fmt.Println("Error unsubscribing from config updates, err:" + err.Error())
 	}
-	unsub, err := ioutil.ReadAll(unsubscribe.Body)
+	unsub, err := io.ReadAll(unsubscribe.Body)
 	if err != nil {
 		fmt.Print("Unable to read unsubscribe response, err: " + err.Error())
 	}
@@ -128,7 +128,7 @@ func unsubscribeFromConfigUpdates(subscriptionId string) {
 }
 
 func configUpdateHandler(w http.ResponseWriter, r *http.Request) {
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		log.Panic(err)
 	}

pub_sub/go/http/order-processor/app.go

@@ -2,8 +2,9 @@ package main
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -40,7 +41,7 @@ func getOrder(w http.ResponseWriter, r *http.Request) {
 }
 
 func postOrder(w http.ResponseWriter, r *http.Request) {
-	data, err := ioutil.ReadAll(r.Body)
+	data, err := io.ReadAll(r.Body)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -79,7 +80,7 @@ func main() {
 
 	// Start the server; this is a blocking call
 	err := http.ListenAndServe(":"+appPort, r)
-	if err != http.ErrServerClosed {
+	if !errors.Is(err, http.ErrServerClosed) {
 		log.Panic(err)
 	}
 }

secrets_management/go/http/order-processor/app.go

@@ -2,7 +2,7 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 )
@@ -25,6 +25,6 @@ func main() {
 		fmt.Print(err.Error())
 		os.Exit(1)
 	}
-	result, _ := ioutil.ReadAll(getResponse.Body)
+	result, _ := io.ReadAll(getResponse.Body)
 	fmt.Println("Fetched Secret: ", string(result))
 }

service_invocation/go/http/checkout/app.go

@@ -2,7 +2,7 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -40,7 +40,7 @@ func main() {
 		}
 
 		// Read the response
-		result, err := ioutil.ReadAll(response.Body)
+		result, err := io.ReadAll(response.Body)
 		if err != nil {
 			log.Fatal(err)
 		}

service_invocation/go/http/order-processor/app.go

@@ -1,8 +1,9 @@
 package main
 
 import (
+	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 
@@ -10,7 +11,7 @@ import (
 )
 
 func getOrder(w http.ResponseWriter, r *http.Request) {
-	data, err := ioutil.ReadAll(r.Body)
+	data, err := io.ReadAll(r.Body)
 	if err != nil {
 		log.Println("Error reading body:", err.Error())
 	}
@@ -29,7 +30,7 @@ func main() {
 	// Start the server listening on port 6001
 	// This is a blocking call
 	err := http.ListenAndServe(":6006", r)
-	if err != http.ErrServerClosed {
+	if !errors.Is(err, http.ErrServerClosed) {
 		log.Println("Error starting HTTP server")
 	}
 }

state_management/go/http/order-processor/app.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -51,7 +51,7 @@ func main() {
 		if err != nil {
 			panic(err)
 		}
-		result, err := ioutil.ReadAll(getResponse.Body)
+		result, err := io.ReadAll(getResponse.Body)
 		if err != nil {
 			panic(err)
 		}