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watcher to support empty response (#313)

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* Add a WatchAsync method.

* proposal for watcher async

* fix and add testcase for async watch

* try fix build
This commit is contained in:
Boshi Lian
2019-10-22 16:02:13 -07:00
committed by Kubernetes Prow Robot
parent 8ab95b6b92
commit a95400bd50
5 changed files with 82 additions and 30 deletions
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62
tests/KubernetesClient.Tests/WatchTests.cs
View File

@@ -66,11 +66,16 @@ namespace k8s.Tests
});
// did not pass watch param
var listTask = await client.ListNamespacedPodWithHttpMessagesAsync("default");
Assert.ThrowsAny<KubernetesClientException>(() =>
{
listTask.Watch<V1Pod>((type, item) => { });
});
var listTask = client.ListNamespacedPodWithHttpMessagesAsync("default");
var onErrorCalled = false;
using (listTask.Watch<V1Pod, V1PodList>((type, item) => { }, e => {
onErrorCalled = true;
})) { }
await Task.Delay(TimeSpan.FromSeconds(1)); // delay for onerror to be called
Assert.True(onErrorCalled);
// server did not response line by line
await Assert.ThrowsAnyAsync<Exception>(() =>
@@ -83,6 +88,41 @@ namespace k8s.Tests
}
}
[Fact]
public async Task AsyncWatcher()
{
var created = new AsyncManualResetEvent(false);
var eventsReceived = new AsyncManualResetEvent(false);
using (var server = new MockKubeApiServer(testOutput, async httpContext =>
{
// block until reponse watcher obj created
await created.WaitAsync();
await WriteStreamLine(httpContext, MockAddedEventStreamLine);
return false;
}))
{
var client = new Kubernetes(new KubernetesClientConfiguration
{
Host = server.Uri.ToString()
});
var listTask = client.ListNamespacedPodWithHttpMessagesAsync("default", watch: true);
using (listTask.Watch<V1Pod, V1PodList>((type, item) => {
eventsReceived.Set();
}))
{
// here watcher is ready to use, but http server has not responsed yet.
created.Set();
await Task.WhenAny(eventsReceived.WaitAsync(), Task.Delay(TestTimeout));
}
Assert.True(eventsReceived.IsSet);
Assert.True(created.IsSet);
}
}
[Fact]
public async Task SuriveBadLine()
{
@@ -119,7 +159,7 @@ namespace k8s.Tests
var events = new HashSet<WatchEventType>();
var errors = 0;
var watcher = listTask.Watch<V1Pod>(
var watcher = listTask.Watch<V1Pod, V1PodList>(
(type, item) =>
{
testOutput.WriteLine($"Watcher received '{type}' event.");
@@ -188,7 +228,7 @@ namespace k8s.Tests
var events = new HashSet<WatchEventType>();
var watcher = listTask.Watch<V1Pod>(
var watcher = listTask.Watch<V1Pod, V1PodList>(
(type, item) =>
{
events.Add(type);
@@ -256,7 +296,7 @@ namespace k8s.Tests
var events = new HashSet<WatchEventType>();
var errors = 0;
var watcher = listTask.Watch<V1Pod>(
var watcher = listTask.Watch<V1Pod, V1PodList>(
(type, item) =>
{
testOutput.WriteLine($"Watcher received '{type}' event.");
@@ -330,7 +370,7 @@ namespace k8s.Tests
var events = new HashSet<WatchEventType>();
var errors = 0;
var watcher = listTask.Watch<V1Pod>(
var watcher = listTask.Watch<V1Pod, V1PodList>(
(type, item) =>
{
testOutput.WriteLine($"Watcher received '{type}' event.");
@@ -396,7 +436,7 @@ namespace k8s.Tests
waitForException.Set();
Watcher<V1Pod> watcher;
watcher = listTask.Watch<V1Pod>(
watcher = listTask.Watch<V1Pod, V1PodList>(
onEvent: (type, item) => { },
onError: e =>
{
@@ -463,7 +503,7 @@ namespace k8s.Tests
var events = new HashSet<WatchEventType>();
var watcher = listTask.Watch<V1Pod>(
var watcher = listTask.Watch<V1Pod, V1PodList>(
(type, item) =>
{
events.Add(type);

3
tests/KubernetesClient.Tests/WatcherTests.cs
View File

@@ -3,6 +3,7 @@ using System;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Xunit;
namespace k8s.Tests
@@ -21,7 +22,7 @@ namespace k8s.Tests
ManualResetEvent mre = new ManualResetEvent(false);
Watcher<V1Pod> watcher = new Watcher<V1Pod>(
reader,
() => Task.FromResult(reader),
null,
(exception) =>
{