/// <summary>
/// Returns the owner identification for a pod.
/// </summary>
/// <param name="k8s">The Kubernetes client.</param>
/// <param name="pod">The pod.</param>
/// <returns>The owner ID.</returns>
private static async Task <string> GetOwnerIdAsync(IKubernetes k8s, V1Pod pod)
{
Covenant.Requires <ArgumentNullException>(k8s != null, nameof(k8s));
Covenant.Requires <ArgumentNullException>(pod != null, nameof(pod));
// We're going to favor standard top-level owners, when present.
string ownerName = null;
string ownerKind = null;
foreach (var owner in pod.OwnerReferences())
{
switch (owner.Kind)
{
case "DaemonSet":
case "Deployment":
case "StatefulSet":
ownerName = owner.Name;
ownerKind = owner.Kind;
break;
case "Node":
// We'll see this for static pods. [owner.Name] is the node name which isn't terribly useful,
// so we'll used the pod name instead, removing the node name part, which will look something
// like:
//
// kube-scheduler-master-0
var nodeNamePos = pod.Metadata.Name.IndexOf(owner.Name) - 1;
ownerName = pod.Metadata.Name.Substring(0, nodeNamePos);
ownerKind = owner.Kind;
break;
case "ReplicaSet":
// Use the replica set's owner when present.
var replicaSet = await k8s.ReadNamespacedReplicaSetAsync(owner.Name, pod.Namespace());
var replicaSetOwner = replicaSet.OwnerReferences().FirstOrDefault();
if (replicaSetOwner != null)
{
ownerName = replicaSetOwner.Name;
ownerKind = replicaSetOwner.Kind;
}
else
{
ownerName = owner.Name;
ownerKind = owner.Kind;
}
break;
}
}
var podNamespace = pod.Namespace();
if (!string.IsNullOrEmpty(ownerName))
{
return($"{podNamespace}/{ownerName} ({ownerKind})");
}
// Default to using the pod name or kind for standalone pods.
return($"{podNamespace}/{pod.Name} ({pod.Kind})");
}
public void TestMetadata()
{
// test getters on null metadata
var pod = new V1Pod();
Assert.Null(pod.Annotations());
Assert.Null(pod.ApiGroup());
var(g, v) = pod.ApiGroupAndVersion();
Assert.Null(g);
Assert.Null(v);
Assert.Null(pod.ApiGroupVersion());
Assert.Null(pod.CreationTimestamp());
Assert.Null(pod.DeletionTimestamp());
Assert.Null(pod.Finalizers());
Assert.Equal(-1, pod.FindOwnerReference(r => true));
Assert.Null(pod.Generation());
Assert.Null(pod.GetAnnotation("x"));
Assert.Null(pod.GetController());
Assert.Null(pod.GetLabel("x"));
Assert.Null(pod.GetOwnerReference(r => true));
Assert.False(pod.HasFinalizer("x"));
Assert.Null(pod.Labels());
Assert.Null(pod.Name());
Assert.Null(pod.Namespace());
Assert.Null(pod.OwnerReferences());
Assert.Null(pod.ResourceVersion());
Assert.Null(pod.Uid());
Assert.Null(pod.Metadata);
// test API version stuff
pod = new V1Pod()
{
ApiVersion = "v1"
};
Assert.Equal("", pod.ApiGroup());
(g, v) = pod.ApiGroupAndVersion();
Assert.Equal("", g);
Assert.Equal("v1", v);
Assert.Equal("v1", pod.ApiGroupVersion());
pod.ApiVersion = "abc/v2";
Assert.Equal("abc", pod.ApiGroup());
(g, v) = pod.ApiGroupAndVersion();
Assert.Equal("abc", g);
Assert.Equal("v2", v);
Assert.Equal("v2", pod.ApiGroupVersion());
// test the Ensure*() functions
Assert.NotNull(pod.EnsureMetadata());
Assert.NotNull(pod.Metadata);
Assert.NotNull(pod.Metadata.EnsureAnnotations());
Assert.NotNull(pod.Metadata.Annotations);
Assert.NotNull(pod.Metadata.EnsureFinalizers());
Assert.NotNull(pod.Metadata.Finalizers);
Assert.NotNull(pod.Metadata.EnsureLabels());
Assert.NotNull(pod.Metadata.Labels);
// test getters with non-null values
DateTime ts = DateTime.UtcNow, ts2 = DateTime.Now;
pod.Metadata = new V1ObjectMeta()
{
CreationTimestamp = ts,
DeletionTimestamp = ts2,
Generation = 1,
Name = "name",
NamespaceProperty = "ns",
ResourceVersion = "42",
Uid = "id"
};
Assert.Equal(ts, pod.CreationTimestamp().Value);
Assert.Equal(ts2, pod.DeletionTimestamp().Value);
Assert.Equal(1, pod.Generation().Value);
Assert.Equal("name", pod.Name());
Assert.Equal("ns", pod.Namespace());
Assert.Equal("42", pod.ResourceVersion());
Assert.Equal("id", pod.Uid());
// test annotations and labels
pod.SetAnnotation("x", "y");
pod.SetLabel("a", "b");
Assert.Equal(1, pod.Annotations().Count);
Assert.Equal(1, pod.Labels().Count);
Assert.Equal("y", pod.GetAnnotation("x"));
Assert.Equal("y", pod.Metadata.Annotations["x"]);
Assert.Null(pod.GetAnnotation("a"));
Assert.Equal("b", pod.GetLabel("a"));
Assert.Equal("b", pod.Metadata.Labels["a"]);
Assert.Null(pod.GetLabel("x"));
pod.SetAnnotation("x", null);
Assert.Equal(0, pod.Annotations().Count);
pod.SetLabel("a", null);
Assert.Equal(0, pod.Labels().Count);
// test finalizers
Assert.False(pod.HasFinalizer("abc"));
Assert.True(pod.AddFinalizer("abc"));
Assert.True(pod.HasFinalizer("abc"));
Assert.False(pod.AddFinalizer("abc"));
Assert.False(pod.HasFinalizer("xyz"));
Assert.False(pod.RemoveFinalizer("xyz"));
Assert.True(pod.RemoveFinalizer("abc"));
Assert.False(pod.HasFinalizer("abc"));
Assert.False(pod.RemoveFinalizer("abc"));
}
