103 lines
3.3 KiB
Go
103 lines
3.3 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package testing
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/client-go/dynamic"
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fakedynamic "k8s.io/client-go/dynamic/fake"
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"k8s.io/kubernetes/pkg/kubelet/runtimeclass"
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"k8s.io/utils/pointer"
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)
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const (
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// SandboxRuntimeClass is a valid RuntimeClass pre-populated in the populated dynamic client.
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SandboxRuntimeClass = "sandbox"
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// SandboxRuntimeHandler is the handler associated with the SandboxRuntimeClass.
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SandboxRuntimeHandler = "kata-containers"
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// EmptyRuntimeClass is a valid RuntimeClass without a handler pre-populated in the populated dynamic client.
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EmptyRuntimeClass = "native"
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// InvalidRuntimeClass is an invalid RuntimeClass pre-populated in the populated dynamic client.
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InvalidRuntimeClass = "foo"
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)
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// NewPopulatedDynamicClient creates a dynamic client for use with the runtimeclass.Manager,
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// and populates it with a few test RuntimeClass objects.
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func NewPopulatedDynamicClient() dynamic.Interface {
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invalidRC := NewUnstructuredRuntimeClass(InvalidRuntimeClass, "")
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invalidRC.Object["spec"].(map[string]interface{})["runtimeHandler"] = true
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client := fakedynamic.NewSimpleDynamicClient(runtime.NewScheme(),
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NewUnstructuredRuntimeClass(EmptyRuntimeClass, ""),
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NewUnstructuredRuntimeClass(SandboxRuntimeClass, SandboxRuntimeHandler),
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invalidRC,
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)
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return client
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}
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// StartManagerSync runs the manager, and waits for startup by polling for the expected "native"
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// RuntimeClass to be populated. Returns a function to stop the manager, which should be called with
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// a defer:
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// defer StartManagerSync(t, m)()
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// Any errors are considered fatal to the test.
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func StartManagerSync(t *testing.T, m *runtimeclass.Manager) func() {
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stopCh := make(chan struct{})
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go m.Run(stopCh)
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// Wait for informer to populate.
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err := wait.PollImmediate(100*time.Millisecond, wait.ForeverTestTimeout, func() (bool, error) {
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_, err := m.LookupRuntimeHandler(pointer.StringPtr(EmptyRuntimeClass))
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if err != nil {
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if errors.IsNotFound(err) {
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return false, nil
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}
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return false, err
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}
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return true, nil
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})
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require.NoError(t, err, "Failed to start manager")
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return func() {
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close(stopCh)
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}
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}
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// NewUnstructuredRuntimeClass is a helper to generate an unstructured RuntimeClass resource with
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// the given name & handler.
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func NewUnstructuredRuntimeClass(name, handler string) *unstructured.Unstructured {
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return &unstructured.Unstructured{
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Object: map[string]interface{}{
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"apiVersion": "node.k8s.io/v1alpha1",
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"kind": "RuntimeClass",
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"metadata": map[string]interface{}{
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"name": name,
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},
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"spec": map[string]interface{}{
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"runtimeHandler": handler,
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},
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},
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}
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}
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