├── LICENSE ├── README.md ├── cache.go ├── example └── main.go ├── go.mod └── go.sum /LICENSE: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. Definitions. 9 | 10 | "License" shall mean the terms and conditions for use, reproduction, 11 | and distribution as defined by Sections 1 through 9 of this document. 12 | 13 | "Licensor" shall mean the copyright owner or entity authorized by 14 | the copyright owner that is granting the License. 15 | 16 | "Legal Entity" shall mean the union of the acting entity and all 17 | other entities that control, are controlled by, or are under common 18 | control with that entity. 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We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. 203 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # GCS Cache 2 | 3 | [![Go Report Card](https://goreportcard.com/badge/github.com/kelseyhightower/gcscache)](https://goreportcard.com/report/github.com/kelseyhightower/gcscache) [![GoDoc](https://godoc.org/github.com/kelseyhightower/gcscache?status.svg)](https://godoc.org/github.com/kelseyhightower/gcscache) 4 | 5 | GCS Cache implements the [autocert.Cache](https://godoc.org/golang.org/x/crypto/acme/autocert#Cache) interface using [Google Cloud Storage](https://cloud.google.com/storage/). 6 | 7 | ## Example Usage 8 | 9 | ``` 10 | package main 11 | 12 | import ( 13 | "crypto/tls" 14 | "log" 15 | "net/http" 16 | 17 | "github.com/kelseyhightower/gcscache" 18 | "golang.org/x/crypto/acme/autocert" 19 | ) 20 | 21 | func main() { 22 | cache, err := gcscache.New("bucket") 23 | if err != nil { 24 | log.Fatal(err) 25 | } 26 | 27 | m := autocert.Manager{ 28 | Cache: cache, 29 | Prompt: autocert.AcceptTOS, 30 | HostPolicy: autocert.HostWhitelist("example.org"), 31 | } 32 | 33 | mux := http.NewServeMux() 34 | mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { 35 | w.Write([]byte("Autocert with Google Cloud Storage Cache")) 36 | }) 37 | 38 | s := &http.Server{ 39 | Addr: "0.0.0.0:443", 40 | Handler: mux, 41 | TLSConfig: &tls.Config{GetCertificate: m.GetCertificate}, 42 | } 43 | 44 | s.ListenAndServeTLS("", "") 45 | } 46 | ``` 47 | -------------------------------------------------------------------------------- /cache.go: -------------------------------------------------------------------------------- 1 | // Copyright 2017 Google Inc. All Rights Reserved. 2 | // Licensed under the Apache License, Version 2.0 (the "License"); 3 | // you may not use this file except in compliance with the License. 4 | 5 | // Package gcscache provides storage, backed by Google Cloud Storage, 6 | // for certificates managed by the golang.org/x/crypto/acme/autocert package. 7 | // 8 | // This package is a work in progress and makes no API stability promises. 9 | package gcscache 10 | 11 | import ( 12 | "context" 13 | "io/ioutil" 14 | 15 | "cloud.google.com/go/storage" 16 | "golang.org/x/crypto/acme/autocert" 17 | ) 18 | 19 | // Cache implements the autocert.Cache interface using Google Cloud Storage. 20 | type Cache struct { 21 | client *storage.Client 22 | bucket string 23 | } 24 | 25 | // New creates and initializes a new Cache backed by the given Google Cloud 26 | // Storage bucket. 27 | func New(bucket string) (*Cache, error) { 28 | client, err := storage.NewClient(context.Background()) 29 | if err != nil { 30 | return nil, err 31 | } 32 | 33 | c := &Cache{client, bucket} 34 | 35 | return c, nil 36 | } 37 | 38 | // Get reads a certificate data from the specified object name. 39 | func (c *Cache) Get(ctx context.Context, name string) ([]byte, error) { 40 | r, err := c.client.Bucket(c.bucket).Object(name).NewReader(context.Background()) 41 | 42 | if err == storage.ErrObjectNotExist { 43 | return nil, autocert.ErrCacheMiss 44 | } 45 | 46 | if err != nil { 47 | return nil, err 48 | } 49 | defer r.Close() 50 | return ioutil.ReadAll(r) 51 | } 52 | 53 | // Put writes the certificate data to the specified object name. 54 | func (c *Cache) Put(ctx context.Context, name string, data []byte) error { 55 | w := c.client.Bucket(c.bucket).Object(name).NewWriter(context.Background()) 56 | w.Write(data) 57 | return w.Close() 58 | } 59 | 60 | // Delete removes the specified object name. 61 | func (c *Cache) Delete(ctx context.Context, name string) error { 62 | o := c.client.Bucket(c.bucket).Object(name) 63 | err := o.Delete(context.Background()) 64 | if err == storage.ErrObjectNotExist { 65 | return nil 66 | } 67 | return err 68 | } 69 | -------------------------------------------------------------------------------- /example/main.go: -------------------------------------------------------------------------------- 1 | // Copyright 2017 Google Inc. All Rights Reserved. 2 | // Licensed under the Apache License, Version 2.0 (the "License"); 3 | // you may not use this file except in compliance with the License. 4 | 5 | package main 6 | 7 | import ( 8 | "crypto/tls" 9 | "flag" 10 | "log" 11 | "net/http" 12 | 13 | "github.com/kelseyhightower/gcscache" 14 | "golang.org/x/crypto/acme/autocert" 15 | ) 16 | 17 | var ( 18 | bucket string 19 | domain string 20 | ) 21 | 22 | func main() { 23 | flag.StringVar(&bucket, "bucket", "", "The GCS bucket.") 24 | flag.StringVar(&domain, "domain", "", "The domain name to secure.") 25 | flag.Parse() 26 | 27 | cache, err := gcscache.New(bucket) 28 | if err != nil { 29 | log.Fatal(err) 30 | } 31 | 32 | mux := http.NewServeMux() 33 | mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { 34 | w.Write([]byte("Autocert with Google Cloud Storage Cache")) 35 | }) 36 | 37 | m := autocert.Manager{ 38 | Cache: cache, 39 | Prompt: autocert.AcceptTOS, 40 | HostPolicy: autocert.HostWhitelist(domain), 41 | } 42 | s := &http.Server{ 43 | Addr: "0.0.0.0:443", 44 | Handler: mux, 45 | TLSConfig: &tls.Config{GetCertificate: m.GetCertificate}, 46 | } 47 | 48 | s.ListenAndServeTLS("", "") 49 | } 50 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/kelseyhightower/gcscache 2 | 3 | require ( 4 | cloud.google.com/go v0.33.1 5 | github.com/google/martian v2.1.0+incompatible // indirect 6 | github.com/googleapis/gax-go v2.0.2+incompatible // indirect 7 | go.opencensus.io v0.18.0 // indirect 8 | golang.org/x/crypto v0.0.0-20181112202954-3d3f9f413869 9 | google.golang.org/api v0.0.0-20181114235557-83a9d304b1e6 // indirect 10 | google.golang.org/genproto v0.0.0-20181109154231-b5d43981345b // indirect 11 | ) 12 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 2 | cloud.google.com/go v0.33.1 h1:fmJQWZ1w9PGkHR1YL/P7HloDvqlmKQ4Vpb7PC2e+aCk= 3 | cloud.google.com/go v0.33.1/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 4 | git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg= 5 | github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= 6 | github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= 7 | github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04= 8 | github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58= 9 | github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= 10 | github.com/golang/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E= 11 | github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= 12 | github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM= 13 | github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= 14 | github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ= 15 | github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= 16 | github.com/google/martian v2.1.0+incompatible h1:/CP5g8u/VJHijgedC/Legn3BAbAaWPgecwXBIDzw5no= 17 | github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs= 18 | github.com/googleapis/gax-go v2.0.2+incompatible h1:silFMLAnr330+NRuag/VjIGF7TLp/LBrV2CJKFLWEww= 19 | github.com/googleapis/gax-go v2.0.2+incompatible/go.mod h1:SFVmujtThgffbyetf+mdk2eWhX2bMyUtNHzFKcPA9HY= 20 | github.com/grpc-ecosystem/grpc-gateway v1.5.0/go.mod h1:RSKVYQBd5MCa4OVpNdGskqpgL2+G+NZTnrVHpWWfpdw= 21 | github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= 22 | github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0= 23 | github.com/openzipkin/zipkin-go v0.1.1/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8= 24 | github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw= 25 | github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo= 26 | github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro= 27 | github.com/prometheus/procfs v0.0.0-20180725123919-05ee40e3a273/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk= 28 | go.opencensus.io v0.18.0 h1:Mk5rgZcggtbvtAun5aJzAtjKKN/t0R3jJPlWILlv938= 29 | go.opencensus.io v0.18.0/go.mod h1:vKdFvxhtzZ9onBp9VKHK8z/sRpBMnKAsufL7wlDrCOA= 30 | golang.org/x/crypto v0.0.0-20181112202954-3d3f9f413869 h1:kkXA53yGe04D0adEYJwEVQjeBppL01Exg+fnMjfUraU= 31 | golang.org/x/crypto v0.0.0-20181112202954-3d3f9f413869/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= 32 | golang.org/x/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= 33 | golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 34 | golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 35 | golang.org/x/net v0.0.0-20181106065722-10aee1819953 h1:LuZIitY8waaxUfNIdtajyE/YzA/zyf0YxXG27VpLrkg= 36 | golang.org/x/net v0.0.0-20181106065722-10aee1819953/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 37 | golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be h1:vEDujvNQGv4jgYKudGeI/+DAX4Jffq6hpD55MmoEvKs= 38 | golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= 39 | golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA= 40 | golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 41 | golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 42 | golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e h1:o3PsSEY8E4eXWkXrIP9YJALUkVZqzHJT5DOasTyn8Vs= 43 | golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 44 | golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg= 45 | golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 46 | golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 47 | google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0= 48 | google.golang.org/api v0.0.0-20181114235557-83a9d304b1e6 h1:oDEtqBIUq5MDzbdy1TgCnw2sW+63bnr1N1OoBZWhLOc= 49 | google.golang.org/api v0.0.0-20181114235557-83a9d304b1e6/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0= 50 | google.golang.org/appengine v1.1.0 h1:igQkv0AAhEIvTEpD5LIpAfav2eeVO9HBTjvKHVJPRSs= 51 | google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM= 52 | google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 53 | google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 54 | google.golang.org/genproto v0.0.0-20181109154231-b5d43981345b h1:WkFtVmaZoTRVoRYr0LTC9SYNhlw0X0HrVPz2OVssVm4= 55 | google.golang.org/genproto v0.0.0-20181109154231-b5d43981345b/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg= 56 | google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw= 57 | google.golang.org/grpc v1.16.0 h1:dz5IJGuC2BB7qXR5AyHNwAUBhZscK2xVez7mznh72sY= 58 | google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio= 59 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 60 | gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 61 | honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 62 | --------------------------------------------------------------------------------