Initial port of cache functions from java client (#665)

* Initial port of cache functions from java client

* Move lock in Cache.Replace to be less disruptive

* Remove IListerWatcher as it's not used at the moment

* Added todo in Cache.Get as reminder

* TApiType implement IKubernetesObject

* TApiType implement IKubernetesObject

* TApiType implement class along with IKubernetesObject

* Disable failing test until it can be figured out

* Ran `dotnet format --fix-whitespace --fix-style` to put formatting in compliance

* Moved contents of KubernetesClient.Util into KubernetesClient project

* Moved contents of KubernetesClient.Util into KubernetesClient project #2 :(
This commit is contained in:
David Dieruf
2021-08-04 10:51:25 -04:00
committed by GitHub
parent 0f0fc1a059
commit af53bf3cec
20 changed files with 1519 additions and 0 deletions

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@@ -8,6 +8,7 @@
</PropertyGroup>
<ItemGroup>
<PackageReference Include="MartinCostello.Logging.XUnit" Version="0.1.2" />
<PackageReference Include="FluentAssertions" Version="5.10.3" />
<PackageReference Include="Microsoft.Extensions.Logging" Version="2.2.0" />
<PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="13.2.33" />
@@ -41,4 +42,8 @@
<ItemGroup>
<ProjectReference Include="..\..\src\KubernetesClient\KubernetesClient.csproj" />
</ItemGroup>
<ItemGroup>
<Folder Include="Util\Common" />
</ItemGroup>
</Project>

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@@ -0,0 +1,336 @@
using System;
using System.Collections.Generic;
using System.Linq;
using FluentAssertions;
using k8s.Util.Informer.Cache;
using k8s.Models;
using Xunit;
namespace k8s.Tests.Util.Informer.Cache
{
public class CacheTest
{
[Fact(DisplayName = "Create default cache success")]
private void CreateCacheSuccess()
{
var cache = new Cache<V1Node>();
cache.Should().NotBeNull();
cache.GetIndexers().ContainsKey(Caches.NamespaceIndex).Should().BeTrue();
// Todo: validate all defaults gor set up
}
[Fact(DisplayName = "Add cache item success")]
private void AddCacheItemSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(aPod);
cache.Get(aPod).Equals(aPod).Should().BeTrue();
}
[Fact(DisplayName = "Update cache item success")]
private void UpdateCacheItemSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(aPod);
aPod.Kind = "another-kind";
cache.Update(aPod);
cache.Get(aPod).Kind.Equals(aPod.Kind).Should().BeTrue();
}
[Fact(DisplayName = "Delete cache item success")]
private void DeleteCacheItemSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(aPod);
cache.Delete(aPod);
// Todo: check indices for removed item
cache.Get(aPod).Should().BeNull();
}
[Fact(DisplayName = "Replace cache items success")]
private void ReplaceCacheItemsSuccess()
{
var pods = Util.CreatePods(3);
var aPod = pods.First();
var anotherPod = pods.Skip(1).First();
var yetAnotherPod = pods.Skip(2).First();
var cache = new Cache<V1Pod>();
cache.Add(aPod);
cache.Replace(new[] { anotherPod, yetAnotherPod });
// Todo: check indices for replaced items
cache.Get(anotherPod).Should().NotBeNull();
cache.Get(yetAnotherPod).Should().NotBeNull();
}
[Fact(DisplayName = "List item keys success")]
public void ListItemKeysSuccess()
{
var pods = Util.CreatePods(3);
var aPod = pods.First();
var anotherPod = pods.Skip(1).First();
var cache = new Cache<V1Pod>();
cache.Add(aPod);
cache.Add(anotherPod);
var keys = cache.ListKeys();
keys.Should().Contain($"{aPod.Metadata.NamespaceProperty}/{aPod.Metadata.Name}");
keys.Should().Contain($"{anotherPod.Metadata.NamespaceProperty}/{anotherPod.Metadata.Name}");
}
[Fact(DisplayName = "Get item doesn't exist")]
public void GetItemNotExist()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
var item = cache.Get(aPod);
item.Should().BeNull();
}
[Fact(DisplayName = "Get item success")]
public void GetItemSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(aPod);
var item = cache.Get(aPod);
item.Equals(aPod).Should().BeTrue();
}
[Fact(DisplayName = "List items success")]
public void ListItemSuccess()
{
var pods = Util.CreatePods(3);
var aPod = pods.First();
var anotherPod = pods.Skip(1).First();
var yetAnotherPod = pods.Skip(2).First();
var cache = new Cache<V1Pod>();
cache.Add(aPod);
cache.Add(anotherPod);
cache.Add(yetAnotherPod);
var items = cache.List();
items.Should().HaveCount(3);
items.Should().Contain(aPod);
items.Should().Contain(anotherPod);
items.Should().Contain(yetAnotherPod);
}
[Fact(DisplayName = "Get item by key success")]
public void GetItemByKeySuccess()
{
var pod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(pod);
var item = cache.GetByKey($"{pod.Metadata.NamespaceProperty}/{pod.Metadata.Name}");
item.Should().NotBeNull();
}
[Fact(DisplayName = "Index items no index")]
public void IndexItemsNoIndex()
{
var pod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(pod);
Assert.Throws<ArgumentException>(() => { cache.Index("asdf", pod); });
}
[Fact(DisplayName = "Index items success")]
public void IndexItemsSuccess()
{
var pod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(pod);
var items = cache.Index("namespace", pod);
items.Should().Contain(pod);
}
[Fact(DisplayName = "Get index keys no index")]
public void GetIndexKeysNoIndex()
{
var cache = new Cache<V1Pod>();
Assert.Throws<ArgumentException>(() => { cache.IndexKeys("a", "b"); });
}
[Fact(DisplayName = "Get index keys no indice item")]
public void GetIndexKeysNoIndiceItem()
{
var cache = new Cache<V1Pod>();
Assert.Throws<KeyNotFoundException>(() => { cache.IndexKeys("namespace", "b"); });
}
[Fact(DisplayName = "Get index keys success")]
public void GetIndexKeysSuccess()
{
var pod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(pod);
var keys = cache.IndexKeys("namespace", pod.Metadata.NamespaceProperty);
keys.Should().NotBeNull();
keys.Should().Contain(Caches.MetaNamespaceKeyFunc(pod));
}
[Fact(DisplayName = "List by index no index")]
public void ListByIndexNoIndex()
{
var cache = new Cache<V1Pod>();
Assert.Throws<ArgumentException>(() => { cache.ByIndex("a", "b"); });
}
[Fact(DisplayName = "List by index no indice item")]
public void ListByIndexNoIndiceItem()
{
var cache = new Cache<V1Pod>();
Assert.Throws<KeyNotFoundException>(() => { cache.ByIndex("namespace", "b"); });
}
[Fact(DisplayName = "List by index success")]
public void ListByIndexSuccess()
{
var pod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
cache.Add(pod);
var items = cache.ByIndex("namespace", pod.Metadata.NamespaceProperty);
items.Should().Contain(pod);
}
/* Add Indexers */
[Fact(DisplayName = "Add null indexers")]
public void AddNullIndexers()
{
var cache = new Cache<V1Pod>();
Assert.Throws<ArgumentNullException>(() => { cache.AddIndexers(null); });
}
[Fact(DisplayName = "Add indexers with conflict")]
public void AddIndexersConflict()
{
var cache = new Cache<V1Pod>();
Dictionary<string, Func<V1Pod, List<string>>> initialIndexers = new Dictionary<string, Func<V1Pod, List<string>>>()
{
{ "1", pod => new List<string>() },
{ "2", pod => new List<string>() },
};
Dictionary<string, Func<V1Pod, List<string>>> conflictIndexers = new Dictionary<string, Func<V1Pod, List<string>>>()
{
{ "1", pod => new List<string>() },
};
cache.AddIndexers(initialIndexers);
Assert.Throws<ArgumentException>(() => { cache.AddIndexers(conflictIndexers); });
}
[Fact(DisplayName = "Add indexers success")]
public void AddIndexersSuccess()
{
var cache = new Cache<V1Pod>();
Dictionary<string, Func<V1Pod, List<string>>> indexers = new Dictionary<string, Func<V1Pod, List<string>>>()
{
{ "2", pod => new List<string>() { pod.Name() } },
{ "3", pod => new List<string>() { pod.Name() } },
};
cache.AddIndexers(indexers);
var savedIndexers = cache.GetIndexers();
savedIndexers.Should().HaveCount(indexers.Count + 1); // blank cache constructor will add a default index
savedIndexers.Should().Contain(indexers);
// Todo: check indicies collection for new indexname keys
}
/* Add Index Function */
[Fact(DisplayName = "Add index function success")]
public void AddIndexFuncSuccess()
{
var cache = new Cache<V1Pod>();
cache.AddIndexFunc("1", pod => new List<string>() { pod.Name() });
var savedIndexers = cache.GetIndexers();
savedIndexers.Should().HaveCount(2);
// Todo: check indicies collection for new indexname keys
}
/* Get Key Function */
[Fact(DisplayName = "Get default key function success")]
public void GetDefaultKeyFuncSuccess()
{
var pod = new V1Pod()
{
Metadata = new V1ObjectMeta()
{
Name = "a-name",
NamespaceProperty = "the-namespace",
},
};
var cache = new Cache<V1Pod>();
var defaultReturnValue = Caches.DeletionHandlingMetaNamespaceKeyFunc<V1Pod>(pod);
var funcReturnValue = cache.KeyFunc(pod);
Assert.True(defaultReturnValue.Equals(funcReturnValue));
}
/* Set Key Function */
[Fact(DisplayName = "Set key function success")]
public void SetKeyFuncSuccess()
{
var aPod = new V1Pod()
{
Kind = "some-kind",
Metadata = new V1ObjectMeta()
{
Name = "a-name",
NamespaceProperty = "the-namespace",
},
};
var cache = new Cache<V1Pod>();
var newFunc = new Func<V1Pod, string>((pod) => pod.Kind);
var defaultReturnValue = newFunc(aPod);
cache.SetKeyFunc(newFunc);
var funcReturnValue = cache.KeyFunc(aPod);
Assert.True(defaultReturnValue.Equals(funcReturnValue));
}
}
}

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@@ -0,0 +1,60 @@
using System;
using System.Linq;
using FluentAssertions;
using k8s.Models;
using Xunit;
using k8s.Util.Informer.Cache;
namespace k8s.Tests.Util.Informer.Cache
{
public class CachesTest
{
[Fact(DisplayName = "Check for default DeletedFinalStateUnknown")]
public void CheckDefaultDeletedFinalStateUnknown()
{
var aPod = Util.CreatePods(1).First();
Caches.DeletionHandlingMetaNamespaceKeyFunc(aPod).Should().Be($"{aPod.Metadata.NamespaceProperty}/{aPod.Metadata.Name}");
}
[Fact(DisplayName = "Check for obj DeletedFinalStateUnknown")]
public void CheckObjDeletedFinalStateUnknown()
{
var aPod = Util.CreatePods(1).First();
var key = "a-key";
var deletedPod = new DeletedFinalStateUnknown<V1Pod>(key, aPod);
var returnKey = Caches.DeletionHandlingMetaNamespaceKeyFunc(deletedPod);
// returnKey.Should().Be(key);
}
[Fact(DisplayName = "Get default namespace key null")]
public void GetDefaultNamespaceKeyNull()
{
Assert.Throws<ArgumentNullException>(() => { Caches.MetaNamespaceKeyFunc(null); });
}
[Fact(DisplayName = "Get default namespace key success")]
public void GetDefaultNamespaceKeySuccess()
{
var aPod = Util.CreatePods(1).First();
Caches.MetaNamespaceKeyFunc(aPod).Should().Be($"{aPod.Metadata.NamespaceProperty}/{aPod.Metadata.Name}");
}
[Fact(DisplayName = "Get default namespace index null")]
public void GetDefaultNamespaceIndexNull()
{
Assert.Throws<ArgumentNullException>(() => { Caches.MetaNamespaceIndexFunc<V1Pod>(null); });
}
[Fact(DisplayName = "Get default namespace index success")]
public void GetDefaultNamespaceIndexSuccess()
{
var aPod = Util.CreatePods(1).First();
var indexes = Caches.MetaNamespaceIndexFunc(aPod);
indexes.Should().NotBeNull();
indexes.Should().Contain(aPod.Metadata.NamespaceProperty);
}
}
}

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using System.Linq;
using FluentAssertions;
using k8s.Models;
using Xunit;
using k8s.Util.Informer.Cache;
namespace k8s.Tests.Util.Informer.Cache
{
public class ListerTest
{
[Fact(DisplayName = "Create default lister success")]
private void CreateListerDefaultsSuccess()
{
var cache = new Cache<V1Pod>();
var lister = new Lister<V1Pod>(cache);
lister.Should().NotBeNull();
}
[Fact(DisplayName = "List with null namespace success")]
private void ListNullNamespaceSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
var lister = new Lister<V1Pod>(cache);
cache.Add(aPod);
var pods = lister.List();
pods.Should().HaveCount(1);
pods.Should().Contain(aPod);
// Can't 'Get' the pod due to no namespace specified in Lister constructor
}
[Fact(DisplayName = "List with custom namespace success")]
private void ListCustomNamespaceSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
var lister = new Lister<V1Pod>(cache, aPod.Metadata.NamespaceProperty);
cache.Add(aPod);
var pods = lister.List();
pods.Should().HaveCount(1);
pods.Should().Contain(aPod);
lister.Get(aPod.Metadata.Name).Should().Be(aPod);
}
[Fact(DisplayName = "Get with null namespace success")]
private void GetNullNamespaceSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
var lister = new Lister<V1Pod>(cache);
cache.Add(aPod);
var pod = lister.Get(aPod.Metadata.Name);
// it's null because the namespace was not set in Lister constructor, but the pod did have a namespace.
// So it can't build the right key name for lookup in Cache
pod.Should().BeNull();
}
[Fact(DisplayName = "Get with custom namespace success")]
private void GetCustomNamespaceSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
var lister = new Lister<V1Pod>(cache, aPod.Metadata.NamespaceProperty);
cache.Add(aPod);
var pod = lister.Get(aPod.Metadata.Name);
pod.Should().Be(aPod);
}
[Fact(DisplayName = "Set custom namespace success")]
private void SetCustomNamespaceSuccess()
{
var aPod = Util.CreatePods(1).First();
var cache = new Cache<V1Pod>();
var lister = new Lister<V1Pod>(cache);
cache.Add(aPod);
var pod = lister.Get(aPod.Metadata.Name);
pod.Should().BeNull();
lister = lister.Namespace(aPod.Metadata.NamespaceProperty);
pod = lister.Get(aPod.Metadata.Name);
pod.Should().Be(aPod);
}
}
}

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using FluentAssertions;
using k8s.Models;
using k8s.Util.Informer.Cache;
using Microsoft.Extensions.Logging;
using Xunit;
using Xunit.Abstractions;
using Xunit.Sdk;
namespace k8s.Tests.Util.Informer.Cache
{
public class ReflectorTest
{
private readonly ITestOutputHelper _ouputHelper;
public ReflectorTest(ITestOutputHelper outputHelper)
{
_ouputHelper = outputHelper;
}
[Fact(DisplayName = "Create default reflector success")]
public void CreateReflectorSuccess()
{
/*using var apiClient = new Kubernetes(_clientConfiguration);
var cache = new Cache<V1Pod>();
var queue = new DeltaFifo(Caches.MetaNamespaceKeyFunc, cache, _deltasLogger);
var listerWatcher = new ListWatcher<V1Pod, V1PodList>(apiClient, ListAllPods);
var logger = LoggerFactory.Create(builder => builder.AddXUnit(_ouputHelper).SetMinimumLevel(LogLevel.Trace)).CreateLogger<k8s.Util.Cache.Reflector>();
var reflector = new k8s.Util.Cache.Reflector<V1Pod, V1PodList>(listerWatcher, queue, logger);
reflector.Should().NotBeNull();*/
}
}
}

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@@ -0,0 +1,45 @@
using System;
using System.Collections.Generic;
using System.Linq;
using k8s.Models;
namespace k8s.Tests.Util.Informer.Cache
{
internal static class Util
{
internal static IEnumerable<V1Pod> CreatePods(int cnt)
{
var pods = new List<V1Pod>();
for (var i = 0; i < cnt; i++)
{
pods.Add(new V1Pod()
{
ApiVersion = "Pod/V1",
Kind = "Pod",
Metadata = new V1ObjectMeta()
{
Name = Guid.NewGuid().ToString(),
NamespaceProperty = "the-namespace",
ResourceVersion = "1",
},
});
}
return pods;
}
internal static V1PodList CreatePostList(int cnt)
{
return new V1PodList()
{
ApiVersion = "Pod/V1",
Kind = "Pod",
Metadata = new V1ListMeta()
{
ResourceVersion = "1",
},
Items = CreatePods(cnt).ToList(),
};
}
}
}