/// <summary>
/// Determine whether a Deployment owns a ReplicaSet.
/// </summary>
/// <param name="replicaSet">
/// The ReplicaSet to examine.
/// </param>
/// <param name="deployment">
/// The Deployment to examine.
/// </param>
/// <returns>
/// <c>true</c>, if the ReplicaSet has an owner-reference to the Deployment; otherwise, <c>false</c>.
/// </returns>
public static bool IsOwnedBy(this ReplicaSetV1 replicaSet, DeploymentV1 deployment)
{
if (replicaSet == null)
{
throw new ArgumentNullException(nameof(replicaSet));
}
if (deployment == null)
{
throw new ArgumentNullException(nameof(deployment));
}
if (replicaSet.Metadata == null)
{
throw new ArgumentException("Cannot evaluate ownership of the supplied ReplicaSet because its Metadata is null.", nameof(replicaSet));
}
if (deployment.Metadata == null)
{
throw new ArgumentException("Cannot evaluate ownership of the supplied ReplicaSet because the supplied Deployment's Metadata is null.", nameof(replicaSet));
}
bool isOwnedBy = replicaSet.Metadata.OwnerReferences.Any(ownerReference =>
ownerReference.Kind == deployment.Kind
&&
ownerReference.ApiVersion == deployment.ApiVersion
&&
ownerReference.Name == deployment.Metadata.Name
);
return(isOwnedBy);
}
/// <summary>
/// Determine the revision (represented by the "deployment.kubernetes.io/revision" annotation) of the Deployment.
/// </summary>
/// <param name="deployment">
/// The <see cref="DeploymentV1"/> model.
/// </param>
/// <returns>
/// The revision, if present; <c>null</c>, if the annotation is absent or not a number.
/// </returns>
public static int?GetRevision(this DeploymentV1 deployment)
{
if (deployment == null)
{
throw new ArgumentNullException(nameof(deployment));
}
if (deployment.Metadata == null)
{
return(null);
}
string rawRevision;
if (!deployment.Metadata.Annotations.TryGetValue(K8sAnnotations.Deployment.Revision, out rawRevision))
{
return(null);
}
int revision;
if (!Int32.TryParse(rawRevision, out revision))
{
return(null);
}
return(revision);
}
/// <summary>
/// Get the composite label selector (if any) associated with the specified Deployment.
/// </summary>
/// <param name="deployment">
/// A <see cref="DeploymentV1"/> representing the Deployment's current state.
/// </param>
/// <returns>
/// The composite label selector (e.g. "key1=value1,key2=value2"), or <c>null</c> if the Deployment doesn't specify any label selectors.
/// </returns>
public static string GetLabelSelector(this DeploymentV1 deployment)
{
if (deployment == null)
{
throw new ArgumentNullException(nameof(deployment));
}
return(deployment.Spec?.Selector?.GetLabelSelector());
}