updated code to check error message

_clients/go.md

@@ -29,8 +29,8 @@ This sample code creates a client, adds an index with non-default settings, inse
 
 ```go
 package main
-
 import (
+    "os"
     "context"
     "crypto/tls"
     "fmt"
@@ -39,11 +39,8 @@ import (
     "net/http"
     "strings"
 )
-
 const IndexName = "go-test-index1"
-
 func main() {
-
     // Initialize the client with SSL/TLS enabled.
     client, err := opensearch.NewClient(opensearch.Config{
         Transport: &http.Transport{
@@ -55,12 +52,13 @@ func main() {
     })
     if err != nil {
         fmt.Println("cannot initialize", err)
+        os.Exit(1)
     }
 
     // Print OpenSearch version information on console.
     fmt.Println(client.Info())
 
-	// Define a mapping.
+    // Define index mapping.
     mapping := strings.NewReader(`{
      'settings': {
        'index': {
@@ -90,6 +88,10 @@ func main() {
         Body:       document,
     }
     insertResponse, err := req.Do(context.Background(), client)
+    if err != nil {
+        fmt.Println("failed to insert document ", err)
+        os.Exit(1)
+    }
     fmt.Println(insertResponse)
 
     // Search for the document.
@@ -108,6 +110,10 @@ func main() {
     }
 
     searchResponse, err := search.Do(context.Background(), client)
+    if err != nil {
+        fmt.Println("failed to search document ", err)
+        os.Exit(1)
+    }
     fmt.Println(searchResponse)
 
     // Delete the document.
@@ -117,16 +123,23 @@ func main() {
     }
 
     deleteResponse, err := delete.Do(context.Background(), client)
+    if err != nil {
+        fmt.Println("failed to delete document ", err)
+        os.Exit(1)
+    }
     fmt.Println("deleting document")
     fmt.Println(deleteResponse)
 
-	// Delete the index.
+    // Delete previously created index.
     deleteIndex := opensearchapi.IndicesDeleteRequest{
         Index: []string{IndexName},
     }
 
     deleteIndexResponse, err := deleteIndex.Do(context.Background(), client)
-	fmt.Println("deleting index")
-	fmt.Println(deleteIndexResponse)
+    if err != nil {
+        fmt.Println("failed to delete index ", err)
+        os.Exit(1)
+    }
+    fmt.Println("deleting index", deleteIndexResponse)
 }
 ```