sigs.k8s.io/cluster-api-provider-azure@v1.14.3/azure/services/privatedns/link_reconciler.go (about)

     1  /*
     2  Copyright 2022 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package privatedns
    18  
    19  import (
    20  	"context"
    21  
    22  	"github.com/pkg/errors"
    23  	infrav1 "sigs.k8s.io/cluster-api-provider-azure/api/v1beta1"
    24  	"sigs.k8s.io/cluster-api-provider-azure/azure"
    25  	"sigs.k8s.io/cluster-api-provider-azure/util/tele"
    26  )
    27  
    28  func (s *Service) reconcileLinks(ctx context.Context, links []azure.ResourceSpecGetter) (managed bool, err error) {
    29  	ctx, log, done := tele.StartSpanWithLogger(ctx, "privatedns.Service.reconcileLinks")
    30  	defer done()
    31  
    32  	var resErr error
    33  
    34  	// We go through the list of links to reconcile each one, independently of the result of the previous one.
    35  	// If multiple errors occur, we return the most pressing one.
    36  	// Order of precedence (highest -> lowest) is: error that is not an operationNotDoneError (i.e. error creating) -> operationNotDoneError (i.e. creating in progress) -> no error (i.e. created)
    37  	for _, linkSpec := range links {
    38  		isLinkManaged, err := s.isVnetLinkManaged(ctx, linkSpec)
    39  		if err != nil {
    40  			if azure.ResourceNotFound(err) {
    41  				isLinkManaged = true
    42  			} else {
    43  				return managed, err
    44  			}
    45  		}
    46  
    47  		if !isLinkManaged {
    48  			log.V(2).Info("Skipping vnet link reconciliation for unmanaged vnet link", "vnet link",
    49  				linkSpec.ResourceName(), "private dns zone", linkSpec.OwnerResourceName())
    50  			continue
    51  		}
    52  
    53  		// we consider VnetLinks as managed if at least of the links is managed.
    54  		managed = true
    55  		if _, err := s.vnetLinkReconciler.CreateOrUpdateResource(ctx, linkSpec, serviceName); err != nil {
    56  			if !azure.IsOperationNotDoneError(err) || resErr == nil {
    57  				resErr = err
    58  			}
    59  		}
    60  	}
    61  
    62  	return managed, resErr
    63  }
    64  
    65  func (s *Service) deleteLinks(ctx context.Context, links []azure.ResourceSpecGetter) (managed bool, err error) {
    66  	ctx, log, done := tele.StartSpanWithLogger(ctx, "privatedns.Service.deleteLinks")
    67  	defer done()
    68  
    69  	var resErr error
    70  
    71  	// We go through the list of links to delete each one, independently of the result of the previous one.
    72  	// If multiple errors occur, we return the most pressing one.
    73  	// Order of precedence (highest -> lowest) is: error that is not an operationNotDoneError (i.e. error creating) -> operationNotDoneError (i.e. creating in progress) -> no error (i.e. created)
    74  	for _, linkSpec := range links {
    75  		// If the virtual network link is not managed by capz, skip its reconciliation
    76  		isVnetLinkManaged, err := s.isVnetLinkManaged(ctx, linkSpec)
    77  		if err != nil {
    78  			if azure.ResourceNotFound(err) {
    79  				// already deleted or doesn't exist, cleanup status and return.
    80  				s.Scope.DeleteLongRunningOperationState(linkSpec.ResourceName(), serviceName, infrav1.DeleteFuture)
    81  				continue
    82  			}
    83  			return managed, errors.Wrapf(err, "could not get vnet link state of %s in resource group %s",
    84  				linkSpec.OwnerResourceName(), linkSpec.ResourceGroupName())
    85  		}
    86  
    87  		if !isVnetLinkManaged {
    88  			log.V(2).Info("Skipping vnet link deletion for unmanaged vnet link", "vnet link",
    89  				linkSpec.ResourceName(), "private dns zone", linkSpec.OwnerResourceName())
    90  			continue
    91  		}
    92  
    93  		// if we reach here, it means that this vnet link is managed by capz.
    94  		managed = true
    95  
    96  		if err := s.vnetLinkReconciler.DeleteResource(ctx, linkSpec, serviceName); err != nil {
    97  			if !azure.IsOperationNotDoneError(err) || resErr == nil {
    98  				resErr = err
    99  			}
   100  		}
   101  	}
   102  
   103  	return managed, resErr
   104  }