my-rook-config/pkg/operator/ceph/file/mirror/controller_test.go

/*
Copyright 2021 The Rook Authors. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Package mirror to manage a rook filesystem
package mirror

import (
	"context"
	"os"
	"testing"

	"github.com/coreos/pkg/capnslog"
	cephv1 "github.com/rook/rook/pkg/apis/ceph.rook.io/v1"
	rookclient "github.com/rook/rook/pkg/client/clientset/versioned/fake"
	"github.com/rook/rook/pkg/client/clientset/versioned/scheme"
	"github.com/rook/rook/pkg/clusterd"
	"github.com/rook/rook/pkg/operator/k8sutil"
	"github.com/rook/rook/pkg/operator/test"
	exectest "github.com/rook/rook/pkg/util/exec/test"
	"github.com/stretchr/testify/assert"
	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/types"
	"sigs.k8s.io/controller-runtime/pkg/client/fake"
	"sigs.k8s.io/controller-runtime/pkg/reconcile"
)

const (
	cephAuthGetOrCreateKey = `{"key":"AQCvzWBeIV9lFRAAninzm+8XFxbSfTiPwoX50g=="}`
	dummyVersionsRaw       = `
	{
		"mon": {
			"ceph version 14.2.8 (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)": 3
		}
	}`
	pacificVersionsRaw = `
	{
		"mon": {
			"ceph version 16.2.1 (3a54b2b6d167d4a2a19e003a705696d4fe619afc) pacific (stable)": 3
		}
	}`
)

func TestCephFilesystemMirrorController(t *testing.T) {
	ctx := context.TODO()
	var (
		name      = "my-fs-mirror"
		namespace = "rook-ceph"
	)
	// Set DEBUG logging
	capnslog.SetGlobalLogLevel(capnslog.DEBUG)
	os.Setenv("ROOK_LOG_LEVEL", "DEBUG")

	//
	// TEST 1 SETUP
	//
	// FAILURE because no CephCluster
	//
	// An cephfs-mirror resource with metadata and spec.
	fsMirror := &cephv1.CephFilesystemMirror{
		ObjectMeta: metav1.ObjectMeta{
			Name:      name,
			Namespace: namespace,
		},
		Spec:     cephv1.FilesystemMirroringSpec{},
		TypeMeta: controllerTypeMeta,
	}

	// Objects to track in the fake client.
	object := []runtime.Object{
		fsMirror,
	}

	executor := &exectest.MockExecutor{
		MockExecuteCommandWithOutput: func(command string, args ...string) (string, error) {
			if args[0] == "status" {
				return `{"fsid":"c47cac40-9bee-4d52-823b-ccd803ba5bfe","health":{"checks":{},"status":"HEALTH_ERR"},"pgmap":{"num_pgs":100,"pgs_by_state":[{"state_name":"active+clean","count":100}]}}`, nil
			}
			if args[0] == "auth" && args[1] == "get-or-create-key" {
				return cephAuthGetOrCreateKey, nil
			}
			if args[0] == "versions" {
				return dummyVersionsRaw, nil
			}
			return "", nil
		},
	}
	clientset := test.New(t, 3)
	c := &clusterd.Context{
		Executor:      executor,
		RookClientset: rookclient.NewSimpleClientset(),
		Clientset:     clientset,
	}

	// Register operator types with the runtime scheme.
	s := scheme.Scheme
	s.AddKnownTypes(cephv1.SchemeGroupVersion, &cephv1.CephFilesystemMirror{})
	s.AddKnownTypes(cephv1.SchemeGroupVersion, &cephv1.CephCluster{})

	// Create a fake client to mock API calls.
	cl := fake.NewClientBuilder().WithScheme(s).WithRuntimeObjects(object...).Build()

	// Create a ReconcileFilesystemMirror object with the scheme and fake client.
	r := &ReconcileFilesystemMirror{client: cl, scheme: s, context: c}

	// Mock request to simulate Reconcile() being called on an event for a
	// watched resource .
	req := reconcile.Request{
		NamespacedName: types.NamespacedName{
			Name:      name,
			Namespace: namespace,
		},
	}
	logger.Info("STARTING PHASE 1")
	res, err := r.Reconcile(ctx, req)
	assert.NoError(t, err)
	assert.True(t, res.Requeue)
	logger.Info("PHASE 1 DONE")

	//
	// TEST 2:
	//
	// FAILURE we have a cluster but it's not ready
	//
	cephCluster := &cephv1.CephCluster{
		ObjectMeta: metav1.ObjectMeta{
			Name:      namespace,
			Namespace: namespace,
		},
		Status: cephv1.ClusterStatus{
			Phase: "",
			CephStatus: &cephv1.CephStatus{
				Health: "",
			},
		},
	}
	object = append(object, cephCluster)
	// Create a fake client to mock API calls.
	cl = fake.NewClientBuilder().WithScheme(s).WithRuntimeObjects(object...).Build()
	// Create a ReconcileFilesystemMirror object with the scheme and fake client.
	r = &ReconcileFilesystemMirror{client: cl, scheme: s, context: c}
	logger.Info("STARTING PHASE 2")
	res, err = r.Reconcile(ctx, req)
	assert.NoError(t, err)
	assert.True(t, res.Requeue)
	logger.Info("PHASE 2 DONE")

	//
	// TEST 3:
	//
	// SUCCESS! The CephCluster is ready but version is too old!
	//

	// Mock clusterInfo
	secrets := map[string][]byte{
		"fsid":         []byte(name),
		"mon-secret":   []byte("monsecret"),
		"admin-secret": []byte("adminsecret"),
	}
	secret := &v1.Secret{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "rook-ceph-mon",
			Namespace: namespace,
		},
		Data: secrets,
		Type: k8sutil.RookType,
	}
	_, err = c.Clientset.CoreV1().Secrets(namespace).Create(ctx, secret, metav1.CreateOptions{})
	assert.NoError(t, err)

	// Add ready status to the CephCluster
	cephCluster.Status.Phase = k8sutil.ReadyStatus
	cephCluster.Status.CephStatus.Health = "HEALTH_OK"

	// Create a fake client to mock API calls.
	cl = fake.NewClientBuilder().WithScheme(s).WithRuntimeObjects(object...).Build()

	// Create a ReconcileFilesystemMirror object with the scheme and fake client.
	r = &ReconcileFilesystemMirror{
		client:  cl,
		scheme:  s,
		context: c,
	}
	res, err = r.Reconcile(ctx, req)
	assert.Error(t, err)
	assert.True(t, res.Requeue)

	//
	// TEST 4:
	//
	// SUCCESS! The CephCluster is ready and running Ceph Pacific!
	//
	r.context.Executor = &exectest.MockExecutor{
		MockExecuteCommandWithOutput: func(command string, args ...string) (string, error) {
			if args[0] == "status" {
				return `{"fsid":"c47cac40-9bee-4d52-823b-ccd803ba5bfe","health":{"checks":{},"status":"HEALTH_ERR"},"pgmap":{"num_pgs":100,"pgs_by_state":[{"state_name":"active+clean","count":100}]}}`, nil
			}
			if args[0] == "auth" && args[1] == "get-or-create-key" {
				return cephAuthGetOrCreateKey, nil
			}
			if args[0] == "versions" {
				return pacificVersionsRaw, nil
			}
			return "", nil
		},
	}

	res, err = r.Reconcile(ctx, req)
	assert.NoError(t, err)
	assert.False(t, res.Requeue)
	err = r.client.Get(context.TODO(), req.NamespacedName, fsMirror)
	assert.NoError(t, err)
	assert.Equal(t, "Ready", fsMirror.Status.Phase, fsMirror)
}