sigs.k8s.io/cluster-api-provider-aws@v1.5.5/cmd/clusterawsadm/resource/list.go (about)

     1  /*
     2  Copyright 2021 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 resource
    18  
    19  import (
    20  	"fmt"
    21  
    22  	"github.com/aws/aws-sdk-go/aws"
    23  	"github.com/aws/aws-sdk-go/aws/arn"
    24  	"github.com/aws/aws-sdk-go/aws/session"
    25  	rgapi "github.com/aws/aws-sdk-go/service/resourcegroupstaggingapi"
    26  
    27  	infrav1 "sigs.k8s.io/cluster-api-provider-aws/api/v1beta1"
    28  )
    29  
    30  // ListAWSResource fetches all AWS resources created by CAPA.
    31  func ListAWSResource(region, clusterName *string) (AWSResourceList, error) {
    32  	var resourceList AWSResourceList
    33  	cfg := aws.Config{}
    34  	if *region != "" {
    35  		cfg.Region = region
    36  	}
    37  
    38  	sess, err := session.NewSessionWithOptions(session.Options{
    39  		SharedConfigState: session.SharedConfigEnable,
    40  		Config:            cfg,
    41  	})
    42  	if err != nil {
    43  		return resourceList, err
    44  	}
    45  
    46  	resourceClient := rgapi.New(sess)
    47  	input := &rgapi.GetResourcesInput{
    48  		TagFilters: []*rgapi.TagFilter{},
    49  	}
    50  
    51  	awsResourceTags := infrav1.Build(infrav1.BuildParams{
    52  		ClusterName: *clusterName,
    53  		Lifecycle:   infrav1.ResourceLifecycleOwned,
    54  	})
    55  
    56  	for tagKey, tagValue := range awsResourceTags {
    57  		tagFilter := &rgapi.TagFilter{}
    58  		tagFilter.SetKey(tagKey)
    59  		tagFilter.SetValues([]*string{aws.String(tagValue)})
    60  		input.TagFilters = append(input.TagFilters, tagFilter)
    61  	}
    62  
    63  	output, err := resourceClient.GetResources(input)
    64  	if err != nil {
    65  		return resourceList, err
    66  	}
    67  
    68  	if len(output.ResourceTagMappingList) == 0 {
    69  		fmt.Println("Could not find any AWS resource created by CAPA")
    70  		return resourceList, nil
    71  	}
    72  
    73  	resourceList = AWSResourceList{
    74  		ClusterName:  *clusterName,
    75  		AWSResources: []AWSResource{},
    76  	}
    77  
    78  	for _, eachResource := range output.ResourceTagMappingList {
    79  		resourceARN, err := arn.Parse(*eachResource.ResourceARN)
    80  		if err != nil {
    81  			return resourceList, err
    82  		}
    83  		eachAWSResource := AWSResource{
    84  			Partition: resourceARN.Partition,
    85  			Service:   resourceARN.Service,
    86  			Region:    resourceARN.Region,
    87  			AccountID: resourceARN.AccountID,
    88  			Resource:  resourceARN.Resource,
    89  			ARN:       *eachResource.ResourceARN,
    90  		}
    91  		resourceList.AWSResources = append(resourceList.AWSResources, eachAWSResource)
    92  	}
    93  
    94  	return resourceList, nil
    95  }