impl.go

Documentation: github.com/chaos-mesh/chaos-mesh/controllers/chaosimpl/azurechaos/diskdetach

     1  // Copyright 2022 Chaos Mesh Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  // http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  
    16  package diskdetach
    17  
    18  import (
    19  	"context"
    20  	"encoding/json"
    21  	"errors"
    22  
    23  	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-07-01/compute"
    24  	"github.com/Azure/go-autorest/autorest/to"
    25  	"github.com/go-logr/logr"
    26  	"sigs.k8s.io/controller-runtime/pkg/client"
    27  
    28  	"github.com/chaos-mesh/chaos-mesh/api/v1alpha1"
    29  	"github.com/chaos-mesh/chaos-mesh/controllers/chaosimpl/azurechaos/utils"
    30  	impltypes "github.com/chaos-mesh/chaos-mesh/controllers/chaosimpl/types"
    31  )
    32  
    33  var _ impltypes.ChaosImpl = (*Impl)(nil)
    34  
    35  type Impl struct {
    36  	client.Client
    37  
    38  	Log logr.Logger
    39  }
    40  
    41  func (impl *Impl) Apply(ctx context.Context, index int, records []*v1alpha1.Record, chaos v1alpha1.InnerObject) (v1alpha1.Phase, error) {
    42  	azurechaos, ok := chaos.(*v1alpha1.AzureChaos)
    43  	if !ok {
    44  		err := errors.New("chaos is not azurechaos")
    45  		impl.Log.Error(err, "chaos is not azureChaos", "chaos", chaos)
    46  		return v1alpha1.NotInjected, err
    47  	}
    48  	vmClient, err := utils.GetVMClient(ctx, impl.Client, azurechaos)
    49  	if err != nil {
    50  		impl.Log.Error(err, "fail to get the vm client")
    51  		return v1alpha1.NotInjected, err
    52  	}
    53  
    54  	var selected v1alpha1.AzureSelector
    55  	err = json.Unmarshal([]byte(records[index].Id), &selected)
    56  	if err != nil {
    57  		impl.Log.Error(err, "fail to unmarshal the selector")
    58  		return v1alpha1.NotInjected, err
    59  	}
    60  
    61  	vm, err := vmClient.Get(ctx, azurechaos.Spec.ResourceGroupName, azurechaos.Spec.VMName, compute.InstanceView)
    62  	if err != nil {
    63  		impl.Log.Error(err, "fail to get the specified vm")
    64  		return v1alpha1.NotInjected, err
    65  	}
    66  
    67  	diskIndex := -1
    68  	for index, disk := range *vm.StorageProfile.DataDisks {
    69  		if *disk.Lun == int32(*azurechaos.Spec.LUN) && *disk.Name == *azurechaos.Spec.DiskName {
    70  			diskIndex = index
    71  			break
    72  		}
    73  	}
    74  	if diskIndex == -1 {
    75  		impl.Log.Error(err, "fail to get the disk, please check the LUN and diskName")
    76  		return v1alpha1.NotInjected, err
    77  	}
    78  
    79  	newDiskList := append((*vm.StorageProfile.DataDisks)[:diskIndex], (*vm.StorageProfile.DataDisks)[diskIndex+1:]...)
    80  	vm.StorageProfile.DataDisks = &newDiskList
    81  
    82  	_, err = vmClient.CreateOrUpdate(ctx, azurechaos.Spec.ResourceGroupName, azurechaos.Spec.VMName, vm)
    83  	if err != nil {
    84  		impl.Log.Error(err, "fail to detach the disk from the vm")
    85  		return v1alpha1.NotInjected, err
    86  	}
    87  	return v1alpha1.Injected, nil
    88  }
    89  func (impl *Impl) Recover(ctx context.Context, index int, records []*v1alpha1.Record, chaos v1alpha1.InnerObject) (v1alpha1.Phase, error) {
    90  	azurechaos, ok := chaos.(*v1alpha1.AzureChaos)
    91  	if !ok {
    92  		err := errors.New("chaos is not azurechaos")
    93  		impl.Log.Error(err, "chaos is not AzureChaos", "chaos", chaos)
    94  		return v1alpha1.Injected, err
    95  	}
    96  
    97  	vmClient, err := utils.GetVMClient(ctx, impl.Client, azurechaos)
    98  	if err != nil {
    99  		impl.Log.Error(err, "fail to get the vm client")
   100  		return v1alpha1.Injected, err
   101  	}
   102  	disksClient, err := utils.GetDiskClient(ctx, impl.Client, azurechaos)
   103  	if err != nil {
   104  		impl.Log.Error(err, "fail to get the disk client")
   105  		return v1alpha1.Injected, err
   106  	}
   107  
   108  	disk, err := disksClient.Get(ctx, azurechaos.Spec.ResourceGroupName, *azurechaos.Spec.DiskName)
   109  	if err != nil {
   110  		impl.Log.Error(err, "fail to get the disk detail")
   111  		return v1alpha1.Injected, err
   112  	}
   113  	vm, err := vmClient.Get(ctx, azurechaos.Spec.ResourceGroupName, azurechaos.Spec.VMName, compute.InstanceView)
   114  	if err != nil {
   115  		impl.Log.Error(err, "fail to get the specified vm")
   116  		return v1alpha1.Injected, err
   117  	}
   118  
   119  	newDiskList := *vm.StorageProfile.DataDisks
   120  	newDiskList = append(newDiskList, compute.DataDisk{
   121  		Lun:          to.Int32Ptr(int32(*azurechaos.Spec.LUN)),
   122  		Name:         azurechaos.Spec.DiskName,
   123  		CreateOption: compute.DiskCreateOptionTypesAttach,
   124  		ManagedDisk: &compute.ManagedDiskParameters{
   125  			ID: disk.ID,
   126  		},
   127  	})
   128  	vm.StorageProfile.DataDisks = &newDiskList
   129  
   130  	var selected v1alpha1.AzureSelector
   131  	err = json.Unmarshal([]byte(records[index].Id), &selected)
   132  	if err != nil {
   133  		impl.Log.Error(err, "fail to unmarshal the selector")
   134  		return v1alpha1.NotInjected, err
   135  	}
   136  
   137  	_, err = vmClient.CreateOrUpdate(ctx, azurechaos.Spec.ResourceGroupName, azurechaos.Spec.VMName, vm)
   138  	if err != nil {
   139  		impl.Log.Error(err, "fail to attach the disk")
   140  		return v1alpha1.Injected, err
   141  	}
   142  	return v1alpha1.NotInjected, nil
   143  }
   144  
   145  func NewImpl(c client.Client, log logr.Logger) *Impl {
   146  	return &Impl{
   147  		Client: c,
   148  		Log:    log.WithName("diskdetach"),
   149  	}
   150  }
   151