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Add support for loading namespaces from pod configuration. (#640)

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This commit is contained in:
Brendan Burns
2021-06-14 16:22:08 -07:00
committed by GitHub
parent d2fa4dee25
commit 762c8af640
6 changed files with 149 additions and 22 deletions
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47
src/KubernetesClient/KubernetesClientConfiguration.InCluster.cs
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@@ -7,32 +7,32 @@ namespace k8s
{
public partial class KubernetesClientConfiguration
{
private static string serviceAccountPath =
#pragma warning disable SA1401
// internal for testing
internal static string ServiceAccountPath =
Path.Combine(new string[]
{
$"{Path.DirectorySeparatorChar}var", "run", "secrets", "kubernetes.io", "serviceaccount",
});
#pragma warning restore SA1401
private const string ServiceAccountTokenKeyFileName = "token";
private const string ServiceAccountRootCAKeyFileName = "ca.crt";
internal const string ServiceAccountTokenKeyFileName = "token";
internal const string ServiceAccountRootCAKeyFileName = "ca.crt";
internal const string ServiceAccountNamespaceFileName = "namespace";
public static bool IsInCluster()
{
var host = Environment.GetEnvironmentVariable("KUBERNETES_SERVICE_HOST");
var port = Environment.GetEnvironmentVariable("KUBERNETES_SERVICE_PORT");
if (string.IsNullOrWhiteSpace(host) || string.IsNullOrWhiteSpace(port))
var tokenPath = Path.Combine(ServiceAccountPath, ServiceAccountTokenKeyFileName);
if (!FileUtils.FileSystem().File.Exists(tokenPath))
{
return false;
}
var tokenPath = Path.Combine(serviceAccountPath, ServiceAccountTokenKeyFileName);
if (!File.Exists(tokenPath))
{
return false;
}
var certPath = Path.Combine(serviceAccountPath, ServiceAccountRootCAKeyFileName);
return File.Exists(certPath);
var certPath = Path.Combine(ServiceAccountPath, ServiceAccountRootCAKeyFileName);
return FileUtils.FileSystem().File.Exists(certPath);
}
public static KubernetesClientConfiguration InClusterConfig()
@@ -43,16 +43,33 @@ namespace k8s
"unable to load in-cluster configuration, KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT must be defined");
}
var rootCAFile = Path.Combine(serviceAccountPath, ServiceAccountRootCAKeyFileName);
var rootCAFile = Path.Combine(ServiceAccountPath, ServiceAccountRootCAKeyFileName);
var host = Environment.GetEnvironmentVariable("KUBERNETES_SERVICE_HOST");
var port = Environment.GetEnvironmentVariable("KUBERNETES_SERVICE_PORT");
if (string.IsNullOrEmpty(host))
{
host = "kubernetes.default.svc";
}
return new KubernetesClientConfiguration
if (string.IsNullOrEmpty(port))
{
port = "443";
}
var result = new KubernetesClientConfiguration
{
Host = new UriBuilder("https", host, Convert.ToInt32(port)).ToString(),
TokenProvider = new TokenFileAuth(Path.Combine(serviceAccountPath, ServiceAccountTokenKeyFileName)),
TokenProvider = new TokenFileAuth(Path.Combine(ServiceAccountPath, ServiceAccountTokenKeyFileName)),
SslCaCerts = CertUtils.LoadPemFileCert(rootCAFile),
};
var namespaceFile = Path.Combine(ServiceAccountPath, ServiceAccountNamespaceFileName);
if (FileUtils.FileSystem().File.Exists(namespaceFile))
{
result.Namespace = FileUtils.FileSystem().File.ReadAllText(namespaceFile);
}
return result;
}
}
}