httpclient to support different timeout for watch and regular api (#725)

* api for httpclient timeout

* testcases for global timeout

* update timeout to honor token

* generated files

Author: tg123

gen/KubernetesGenerator/Kubernetes.cs.template

@@ -319,6 +319,16 @@ namespace k8s
             Dictionary<string, List<string>> customHeaders = null,
             CancellationToken cancellationToken = default(CancellationToken))
         {
+            var cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
+            cts.CancelAfter(HttpClientTimeout);
+            {{#IfParamCotains operation "watch"}}
+            if (watch == true)
+            {
+                cts.CancelAfter(Timeout.InfiniteTimeSpan);
+            }
+            {{/IfParamCotains operation "watch"}}
+            cancellationToken = cts.Token;
+
             {{#operation.parameters}}
             {{#isRequired}}
             if ({{GetDotNetName name}} == null)

src/KubernetesClient/Kubernetes.ConfigInit.cs

@@ -8,6 +8,7 @@
 using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Security.Cryptography.X509Certificates;
+using System.Threading;
 using k8s.Exceptions;
 using k8s.Models;
 using Microsoft.Rest;
@@ -16,6 +17,13 @@ namespace k8s
 {
     public partial class Kubernetes
     {
+        /// <summary>
+        ///     Timeout of REST calls to Kubernetes server
+        ///     Does not apply to watch related api
+        /// </summary>
+        /// <value>timeout</value>
+        public TimeSpan HttpClientTimeout { get; set; } = TimeSpan.FromSeconds(100);
+
         /// <summary>
         ///     Initializes a new instance of the <see cref="Kubernetes" /> class.
         /// </summary>
@@ -69,6 +77,7 @@ public Kubernetes(KubernetesClientConfiguration config, params DelegatingHandler
             SkipTlsVerify = config.SkipTlsVerify;
             CreateHttpClient(handlers, config);
             InitializeFromConfig(config);
+            HttpClientTimeout = config.HttpClientTimeout;
         }
 
         private void ValidateConfig(KubernetesClientConfiguration config)
@@ -247,7 +256,10 @@ private void CreateHttpClient(DelegatingHandler[] handlers, KubernetesClientConf
                 }
             }
 
-            HttpClient = new HttpClient(FirstMessageHandler, false);
+            HttpClient = new HttpClient(FirstMessageHandler, false)
+            {
+                Timeout = Timeout.InfiniteTimeSpan,
+            };
         }
 
         /// <summary>

src/KubernetesClient/KubernetesClientConfiguration.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Security.Cryptography.X509Certificates;
@@ -79,8 +80,25 @@ public partial class KubernetesClientConfiguration
         /// <value>The access token.</value>
         public string AccessToken { get; set; }
 
+        /// <summary>
+        ///     Gets or sets the TokenProvider for authentication.
+        /// </summary>
+        /// <value>The access token.</value>
         public ITokenProvider TokenProvider { get; set; }
 
+        /// <summary>
+        ///     Set true to enable tcp keep alive
+        ///     You have to set https://tldp.org/HOWTO/TCP-Keepalive-HOWTO/usingkeepalive.html as well
+        /// </summary>
+        /// <value>true or false</value>
         public bool TcpKeepAlive { get; set; } = true;
+
+
+        /// <summary>
+        ///     Timeout of REST calls to Kubernetes server
+        ///     Does not apply to watch related api
+        /// </summary>
+        /// <value>timeout</value>
+        public TimeSpan HttpClientTimeout { get; set; } = TimeSpan.FromSeconds(100);
     }
 }