Add CancellationToken to async methods

CancellationToken arguments have been added to the async methods in the QueryExecutor and GraphQueryExecute classes. This change allows the invocation of these methods to be cancelled if needed, thereby enhancing the control over the execution flow of asynchronous calls.

Author: magahl-swegon

src/Linq2GraphQL.Client/GraphQueryExecute.cs

@@ -22,15 +22,15 @@ public GraphQueryExecute(GraphClient client, OperationType operationType, QueryN
 
     public T BaseResult { get; set; }
 
-    public async Task<T> ExecuteBaseAsync()
+    public async Task<T> ExecuteBaseAsync(CancellationToken cancellationToken = default)
     {
-        BaseResult = await queryExecutor.ExecuteRequestAsync(QueryNode.Name, await GetRequestAsync());
+        BaseResult = await queryExecutor.ExecuteRequestAsync(QueryNode.Name, await GetRequestAsync(), cancellationToken);
         return BaseResult;
     }
 
-    public async Task<TResult> ExecuteAsync()
+    public async Task<TResult> ExecuteAsync(CancellationToken cancellationToken = default)
     {
-        return ConvertResult(await ExecuteBaseAsync());
+        return ConvertResult(await ExecuteBaseAsync(cancellationToken));
     }
 
 }

src/Linq2GraphQL.Client/QueryExecutor.cs

@@ -14,19 +14,18 @@ internal QueryExecutor(GraphClient client)
         this.client = client;
     }
 
-    internal async Task<T> ExecuteRequestAsync(string name, GraphQLRequest graphRequest)
+    internal async Task<T> ExecuteRequestAsync(string name, GraphQLRequest graphRequest, CancellationToken cancellationToken = default)
     {
-        var json = JsonSerializer.Serialize(graphRequest, client.SerializerOptions);
-        using var response = await client.HttpClient.PostAsJsonAsync("", graphRequest, client.SerializerOptions);
+        using var response = await client.HttpClient.PostAsJsonAsync("", graphRequest, client.SerializerOptions, cancellationToken: cancellationToken);
 
         if (!response.IsSuccessStatusCode)
         {
-            var content = await response.Content.ReadAsStringAsync();
+            var content = await response.Content.ReadAsStringAsync(cancellationToken);
             throw new GraphQueryRequestException($"Http error! Status code {response.StatusCode} Error: {content}",
                 graphRequest.Query);
         }
 
-        var con = await response.Content.ReadAsStringAsync();
+        var con = await response.Content.ReadAsStringAsync(cancellationToken);
         return ProcessResponse(con, name, graphRequest.Query);
     }