|
| 1 | +/* |
| 2 | +Copyright 2025 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 resources |
| 18 | + |
| 19 | +import ( |
| 20 | + "context" |
| 21 | + "fmt" |
| 22 | + "slices" |
| 23 | + "time" |
| 24 | + |
| 25 | + "github.com/aws/aws-sdk-go-v2/aws" |
| 26 | + "github.com/aws/aws-sdk-go-v2/service/ecr" |
| 27 | + "github.com/aws/aws-sdk-go-v2/service/ecr/types" |
| 28 | + |
| 29 | + "github.com/sirupsen/logrus" |
| 30 | +) |
| 31 | + |
| 32 | +type ContainerImages struct{} |
| 33 | + |
| 34 | +//nolint:gocognit // Just over the complexity threshold and splitting would make it less readable |
| 35 | +func (ContainerImages) MarkAndSweep(opts Options, set *Set) error { |
| 36 | + logger := logrus.WithField("options", opts) |
| 37 | + if len(opts.CleanEcrRepositories) == 0 { |
| 38 | + logger.Info("No ECR reposotories to clean provided, skipping ECR") |
| 39 | + return nil |
| 40 | + } |
| 41 | + |
| 42 | + svc := ecr.NewFromConfig(*opts.Config, func(opt *ecr.Options) { |
| 43 | + opt.Region = opts.Region |
| 44 | + }) |
| 45 | + inp := &ecr.DescribeRepositoriesInput{ |
| 46 | + RegistryId: aws.String(opts.Account), |
| 47 | + } |
| 48 | + |
| 49 | + // DescribeImages requires a repository name, so we first must crawl all repositories |
| 50 | + err := DescribeRepositoriesPages(svc, inp, func(repos *ecr.DescribeRepositoriesOutput) error { |
| 51 | + for _, repo := range repos.Repositories { |
| 52 | + if !slices.Contains(opts.CleanEcrRepositories, *repo.RepositoryName) { |
| 53 | + continue |
| 54 | + } |
| 55 | + |
| 56 | + // BatchDeleteImage can only be called per-repo, so describe all the images in a repo, delete them, and repeat |
| 57 | + var toDelete []*image |
| 58 | + imageInp := &ecr.DescribeImagesInput{ |
| 59 | + RegistryId: repo.RegistryId, |
| 60 | + RepositoryName: repo.RepositoryName, |
| 61 | + } |
| 62 | + |
| 63 | + imagesErr := DescribeImagesPages(svc, imageInp, func(images *ecr.DescribeImagesOutput) error { |
| 64 | + for _, ecrImage := range images.ImageDetails { |
| 65 | + i := image{ |
| 66 | + Registry: *ecrImage.RegistryId, |
| 67 | + Region: opts.Region, |
| 68 | + Repository: *ecrImage.RepositoryName, |
| 69 | + Digest: *ecrImage.ImageDigest, |
| 70 | + } |
| 71 | + |
| 72 | + // ECR repos cannot have tags, so pass an empty object |
| 73 | + if !set.Mark(opts, i, ecrImage.ImagePushedAt, Tags{}) { |
| 74 | + continue |
| 75 | + } |
| 76 | + toDelete = append(toDelete, &i) |
| 77 | + } |
| 78 | + return nil |
| 79 | + }, false /* continue on error */) |
| 80 | + if imagesErr != nil { |
| 81 | + logrus.Warningf("failed to get page: %v", imagesErr) |
| 82 | + } |
| 83 | + |
| 84 | + deleteReq := &ecr.BatchDeleteImageInput{ |
| 85 | + RegistryId: repo.RegistryId, |
| 86 | + RepositoryName: repo.RepositoryName, |
| 87 | + ImageIds: []types.ImageIdentifier{}, |
| 88 | + } |
| 89 | + for n, image := range toDelete { |
| 90 | + deleteReq.ImageIds = append(deleteReq.ImageIds, types.ImageIdentifier{ |
| 91 | + ImageDigest: aws.String(image.Digest), |
| 92 | + }) |
| 93 | + |
| 94 | + // 100 images max: https://docs.aws.amazon.com/AmazonECR/latest/APIReference/API_BatchDeleteImage.html |
| 95 | + // If we've reached 100 images, or this is the last item in the toDelete slice, make the call to the AWS API |
| 96 | + if len(deleteReq.ImageIds) == 100 || n == len(toDelete)-1 { |
| 97 | + logger.Warningf("%s: deleting %d images", *repo.RepositoryArn, len(deleteReq.ImageIds)) |
| 98 | + if !opts.DryRun { |
| 99 | + result, err := svc.BatchDeleteImage(context.TODO(), deleteReq) |
| 100 | + |
| 101 | + if err != nil { |
| 102 | + logger.Warningf("%s: delete API call failed: %v", *repo.RepositoryArn, err) |
| 103 | + } else if len(result.Failures) > 0 { |
| 104 | + logger.Warningf("%s: some images failed to delete: %T", *repo.RepositoryArn, result.Failures) |
| 105 | + } |
| 106 | + } |
| 107 | + // After making delete call, reset to an empty set of images |
| 108 | + deleteReq.ImageIds = []types.ImageIdentifier{} |
| 109 | + } |
| 110 | + } |
| 111 | + } |
| 112 | + return nil |
| 113 | + }, false /* continue on error */) |
| 114 | + if err != nil { |
| 115 | + logrus.Warningf("failed to get page: %v", err) |
| 116 | + } |
| 117 | + |
| 118 | + return nil |
| 119 | +} |
| 120 | + |
| 121 | +func (ContainerImages) ListAll(opts Options) (*Set, error) { |
| 122 | + set := NewSet(0) |
| 123 | + if len(opts.CleanEcrRepositories) == 0 { |
| 124 | + return set, nil |
| 125 | + } |
| 126 | + svc := ecr.NewFromConfig(*opts.Config, func(opt *ecr.Options) { |
| 127 | + opt.Region = opts.Region |
| 128 | + }) |
| 129 | + inp := &ecr.DescribeRepositoriesInput{ |
| 130 | + RegistryId: aws.String(opts.Account), |
| 131 | + } |
| 132 | + |
| 133 | + err := DescribeRepositoriesPages(svc, inp, func(repos *ecr.DescribeRepositoriesOutput) error { |
| 134 | + for _, repo := range repos.Repositories { |
| 135 | + if !slices.Contains(opts.CleanEcrRepositories, *repo.RepositoryName) { |
| 136 | + continue |
| 137 | + } |
| 138 | + |
| 139 | + imageInp := &ecr.DescribeImagesInput{ |
| 140 | + RegistryId: repo.RegistryId, |
| 141 | + RepositoryName: repo.RepositoryName, |
| 142 | + } |
| 143 | + |
| 144 | + err := DescribeImagesPages(svc, imageInp, func(images *ecr.DescribeImagesOutput) error { |
| 145 | + now := time.Now() |
| 146 | + for _, ecrImage := range images.ImageDetails { |
| 147 | + key := image{ |
| 148 | + Registry: *ecrImage.RegistryId, |
| 149 | + Region: opts.Region, |
| 150 | + Repository: *ecrImage.RepositoryName, |
| 151 | + Digest: *ecrImage.ImageDigest, |
| 152 | + }.ResourceKey() |
| 153 | + |
| 154 | + set.firstSeen[key] = now |
| 155 | + } |
| 156 | + return nil |
| 157 | + }, true /* fail on error */) |
| 158 | + |
| 159 | + if err != nil { |
| 160 | + return err |
| 161 | + } |
| 162 | + } |
| 163 | + return nil |
| 164 | + }, true /* fail on error */) |
| 165 | + |
| 166 | + return set, err |
| 167 | +} |
| 168 | + |
| 169 | +//nolint:nestif // Ifs are small and nesting cannot be reasonably avoided |
| 170 | +func DescribeRepositoriesPages(svc *ecr.Client, input *ecr.DescribeRepositoriesInput, pageFunc func(repos *ecr.DescribeRepositoriesOutput) error, failOnError bool) error { |
| 171 | + paginator := ecr.NewDescribeRepositoriesPaginator(svc, input) |
| 172 | + |
| 173 | + for paginator.HasMorePages() { |
| 174 | + page, err := paginator.NextPage(context.TODO()) |
| 175 | + if err != nil { |
| 176 | + logrus.Warningf("failed to get page: %v", err) |
| 177 | + if failOnError { |
| 178 | + return err |
| 179 | + } |
| 180 | + } else { |
| 181 | + err = pageFunc(page) |
| 182 | + if err != nil { |
| 183 | + logrus.Warningf("pageFunc failed: %v", err) |
| 184 | + if failOnError { |
| 185 | + return err |
| 186 | + } |
| 187 | + } |
| 188 | + } |
| 189 | + } |
| 190 | + return nil |
| 191 | +} |
| 192 | + |
| 193 | +//nolint:nestif // Ifs are small and nesting cannot be reasonably avoided |
| 194 | +func DescribeImagesPages(svc *ecr.Client, input *ecr.DescribeImagesInput, pageFunc func(images *ecr.DescribeImagesOutput) error, failOnError bool) error { |
| 195 | + paginator := ecr.NewDescribeImagesPaginator(svc, input) |
| 196 | + |
| 197 | + for paginator.HasMorePages() { |
| 198 | + page, err := paginator.NextPage(context.TODO()) |
| 199 | + if err != nil { |
| 200 | + logrus.Warningf("failed to get page: %v", err) |
| 201 | + if failOnError { |
| 202 | + return err |
| 203 | + } |
| 204 | + } else { |
| 205 | + err = pageFunc(page) |
| 206 | + if err != nil { |
| 207 | + logrus.Warningf("pageFunc failed: %v", err) |
| 208 | + if failOnError { |
| 209 | + return err |
| 210 | + } |
| 211 | + } |
| 212 | + } |
| 213 | + } |
| 214 | + return nil |
| 215 | +} |
| 216 | + |
| 217 | +type image struct { |
| 218 | + Registry string |
| 219 | + Region string |
| 220 | + Repository string |
| 221 | + Digest string |
| 222 | +} |
| 223 | + |
| 224 | +// Images don't have an ARN, only repositories do, so we use our own custom key format |
| 225 | +func (i image) ARN() string { |
| 226 | + return i.ResourceKey() |
| 227 | +} |
| 228 | + |
| 229 | +func (i image) ResourceKey() string { |
| 230 | + return fmt.Sprintf("%s:%s/%s:%s", i.Registry, i.Region, i.Repository, i.Digest) |
| 231 | +} |
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