1 // Copyright 2019 Google LLC All Rights Reserved. 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 package cache_test 16 17 import ( 18 "fmt" 19 "log" 20 "os" 21 22 "github.com/google/go-containerregistry/pkg/v1/cache" 23 "github.com/google/go-containerregistry/pkg/v1/random" 24 ) 25 26 func ExampleImage() { 27 img, err := random.Image(1024*1024, 3) 28 if err != nil { 29 log.Fatal(err) 30 } 31 dir, err := os.MkdirTemp("", "") 32 if err != nil { 33 log.Fatal(err) 34 } 35 fs := cache.NewFilesystemCache(dir) 36 37 // cached will cache layers from img using the fs cache 38 cached := cache.Image(img, fs) 39 40 // Use cached as you would use img. 41 digest, err := cached.Digest() 42 if err != nil { 43 log.Fatal(err) 44 } 45 fmt.Println(digest) 46 } 47