feat: enhance Kubernetes client with watch functionality (#1667)

* feat: enhance Kubernetes client with watch functionality

* refactor: simplify watch event handling in Kubernetes client example

* refactor: update Kubernetes watch functionality to use new event handling methods and add async enumerable support

* fix

* fix

* fix: correct usage of Pod list items in client example and update Obsolete attribute formatting

* fix: update client example to use correct Pod list method and improve Obsolete attribute formatting

* refactor: enhance type resolution for list items in TypeHelper by adding TryGetItemTypeFromSchema method

* feat: mark Watch methods as obsolete to prepare for future deprecation

* fix

* refactor: update WatcherExt class to internal and remove obsolete attributes; improve example method signature in Program.cs

* refactor: change WatcherExt class from internal to public and mark methods as obsolete for future deprecation
This commit is contained in:
Qing Long
2025-10-12 06:10:53 +08:00
committed by GitHub
parent ca5d9f4793
commit 6d27bd900b
9 changed files with 647 additions and 90 deletions

View File

@@ -224,13 +224,12 @@ namespace k8s.E2E
var started = new AsyncManualResetEvent();
var connectionClosed = new AsyncManualResetEvent();
var watcher = kubernetes.BatchV1.ListNamespacedJobWithHttpMessagesAsync(
var watcher = kubernetes.BatchV1.WatchListNamespacedJob(
job.Metadata.NamespaceProperty,
fieldSelector: $"metadata.name={job.Metadata.Name}",
resourceVersion: job.Metadata.ResourceVersion,
timeoutSeconds: 30,
watch: true).Watch<V1Job, V1JobList>(
(type, source) =>
onEvent: (type, source) =>
{
Debug.WriteLine($"Watcher 1: {type}, {source}");
events.Add(new Tuple<WatchEventType, V1Job>(type, source));
@@ -250,6 +249,86 @@ namespace k8s.E2E
new V1DeleteOptions() { PropagationPolicy = "Foreground" }).ConfigureAwait(false);
}
[MinikubeFact]
public async Task WatcherIntegrationTestAsyncEnumerable()
{
using var kubernetes = CreateClient();
var job = await kubernetes.BatchV1.CreateNamespacedJobAsync(
new V1Job()
{
ApiVersion = "batch/v1",
Kind = V1Job.KubeKind,
Metadata = new V1ObjectMeta() { Name = nameof(WatcherIntegrationTestAsyncEnumerable).ToLowerInvariant() },
Spec = new V1JobSpec()
{
Template = new V1PodTemplateSpec()
{
Spec = new V1PodSpec()
{
Containers = new List<V1Container>()
{
new V1Container()
{
Image = "ubuntu",
Name = "runner",
Command = new List<string>() { "/bin/bash", "-c", "--" },
Args = new List<string>()
{
"trap : TERM INT; sleep infinity & wait",
},
},
},
RestartPolicy = "Never",
},
},
},
},
"default").ConfigureAwait(false);
var events = new Collection<Tuple<WatchEventType, V1Job>>();
var started = new AsyncManualResetEvent();
var watchCompleted = new AsyncManualResetEvent();
// Start async enumerable watch in background task to mimic callback behavior
var watchTask = Task.Run(async () =>
{
try
{
await foreach (var (type, source) in kubernetes.BatchV1.WatchListNamespacedJobAsync(
job.Metadata.NamespaceProperty,
fieldSelector: $"metadata.name={job.Metadata.Name}",
resourceVersion: job.Metadata.ResourceVersion,
timeoutSeconds: 30).ConfigureAwait(false))
{
Debug.WriteLine($"AsyncEnumerable Watcher: {type}, {source}");
events.Add(new Tuple<WatchEventType, V1Job>(type, source));
job = source;
started.Set();
}
}
catch (Exception ex)
{
Debug.WriteLine($"Watch exception: {ex.GetType().FullName}: {ex.Message}");
}
finally
{
watchCompleted.Set();
}
});
await started.WaitAsync().ConfigureAwait(false);
await Task.WhenAny(watchCompleted.WaitAsync(), Task.Delay(TimeSpan.FromMinutes(3))).ConfigureAwait(false);
Assert.True(watchCompleted.IsSet);
var st = await kubernetes.BatchV1.DeleteNamespacedJobAsync(
job.Metadata.Name,
job.Metadata.NamespaceProperty,
new V1DeleteOptions() { PropagationPolicy = "Foreground" }).ConfigureAwait(false);
}
[MinikubeFact]
public void LeaderIntegrationTest()
{