├── .drone.yml ├── .github └── workflows │ └── release.yml ├── .gitignore ├── .goreleaser.yml ├── LICENSE ├── README.md ├── go.mod ├── go.sum └── main.go /.drone.yml: -------------------------------------------------------------------------------- 1 | --- 2 | kind: pipeline 3 | name: default 4 | type: docker 5 | 6 | platform: 7 | os: linux 8 | arch: arm64 9 | 10 | steps: 11 | - name: fetch 12 | image: alpine/git 13 | commands: 14 | - git fetch --tags 15 | 16 | - name: lint 17 | image: golangci/golangci-lint:v1.47.2 18 | commands: 19 | - golangci-lint run --no-config -v --timeout 10m ./... 20 | when: 21 | event: 22 | exclude: 23 | - tag 24 | environment: 25 | GOPROXY: 26 | from_secret: goproxy_url 27 | 28 | - name: release 29 | image: ghcr.io/goreleaser/goreleaser:v1.8.3 30 | commands: 31 | - goreleaser release --skip-announce 32 | environment: 33 | GITHUB_TOKEN: 34 | from_secret: github_token 35 | GOPROXY: 36 | from_secret: goproxy_url 37 | when: 38 | event: tag 39 | -------------------------------------------------------------------------------- /.github/workflows/release.yml: -------------------------------------------------------------------------------- 1 | name: goreleaser 2 | 3 | on: 4 | push: 5 | tags: 6 | - '*' 7 | 8 | permissions: 9 | contents: write 10 | 11 | jobs: 12 | goreleaser: 13 | runs-on: ubuntu-latest 14 | steps: 15 | - 16 | name: Checkout 17 | uses: actions/checkout@v4 18 | with: 19 | fetch-depth: 0 20 | - 21 | name: Fetch all tags 22 | run: git fetch --force --tags 23 | - 24 | name: Set up Go 25 | uses: actions/setup-go@v5 26 | with: 27 | go-version: 1.24 28 | - 29 | name: Run GoReleaser 30 | uses: goreleaser/goreleaser-action@v6 31 | with: 32 | distribution: goreleaser 33 | version: "~> v2" 34 | args: release --clean 35 | env: 36 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 37 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .idea/ 2 | dist/ 3 | -------------------------------------------------------------------------------- /.goreleaser.yml: -------------------------------------------------------------------------------- 1 | --- 2 | project_name: docker-deploy 3 | version: 2 4 | 5 | builds: 6 | - env: 7 | - CGO_ENABLED=0 8 | goos: 9 | - linux 10 | - windows 11 | - darwin 12 | goarch: 13 | - 386 14 | - amd64 15 | - arm64 16 | - arm 17 | flags: 18 | - -trimpath 19 | ldflags: -s -w 20 | 21 | archives: 22 | - formats: [ 'tar.gz' ] 23 | wrap_in_directory: true 24 | format_overrides: 25 | - goos: windows 26 | formats: [ 'zip' ] 27 | name_template: '{{ .ProjectName }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}' 28 | files: 29 | - LICENSE 30 | - README.md 31 | 32 | checksum: 33 | name_template: '{{ .ProjectName }}-{{ .Version }}-checksums.txt' 34 | 35 | snapshot: 36 | version_template: SNAPSHOT-{{ .Commit }} 37 | 38 | changelog: 39 | disable: true 40 | 41 | release: 42 | github: 43 | owner: codestation 44 | name: docker-deploy 45 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | #### Swarm Deploy Wrapper 2 | 3 | This application makes managing docker configs/secrets more bearable. 4 | 5 | The wrapper reads the configs and secrets section of the yaml file and creates environment variables based on the SHA256 6 | of the referenced files (truncated to 16 characters). For example: 7 | 8 | ```yaml 9 | configs: 10 | my_config: 11 | name: my_config.${MYFILE_XML} 12 | file: ./myfile.xml 13 | 14 | secrets: 15 | my_secret: 16 | name: service.${DATA_CREDENTIALS_JSON} 17 | file: ./data.credentials.json 18 | ``` 19 | 20 | Will create two environment variables `MYFILE_XML` and `DATA_CREDENTIALS_JSON` with the truncated sha256sum of their 21 | respective files and pass them to the `docker stack deploy` command. 22 | 23 | The stack name can be ommited, in that case the current directory name will be used instead. 24 | 25 | ## Options 26 | 27 | * `--compose-file, -c` Path to a Compose file, or "-" to read from stdin. 28 | * `--with-registry-auth, -a` Send registry authentication details to Swarm agents. 29 | * `--prune, -p` Prune services that are no longer referenced. 30 | * `--host, -H` Daemon socket(s) to connect to. 31 | 32 | ## Config file 33 | 34 | A file named `.docker-deploy.yml` can be placed in the current directory or any of the parent directories. 35 | Currently, only the Docker host can be specified. 36 | 37 | Example: 38 | ```yaml 39 | host: ssh://user@example.org:port 40 | ``` 41 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module go.megpoid.dev/docker-deploy 2 | 3 | go 1.24 4 | 5 | require ( 6 | github.com/spf13/pflag v1.0.6 7 | gopkg.in/yaml.v3 v3.0.1 8 | ) 9 | 10 | require ( 11 | github.com/kr/pretty v0.1.0 // indirect 12 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect 13 | ) 14 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI= 2 | github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= 3 | github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= 4 | github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE= 5 | github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= 6 | github.com/spf13/pflag v1.0.6 h1:jFzHGLGAlb3ruxLB8MhbI6A8+AQX/2eW4qeyNZXNp2o= 7 | github.com/spf13/pflag v1.0.6/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg= 8 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 9 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY= 10 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 11 | gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= 12 | gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 13 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "crypto/sha256" 6 | "encoding/hex" 7 | "fmt" 8 | "io" 9 | "log" 10 | "os" 11 | "os/exec" 12 | "path" 13 | "path/filepath" 14 | "regexp" 15 | "runtime/debug" 16 | "strings" 17 | "time" 18 | 19 | flag "github.com/spf13/pflag" 20 | "gopkg.in/yaml.v3" 21 | ) 22 | 23 | var ( 24 | // Tag indicates the commit tag 25 | Tag = "none" 26 | // Revision indicates the git commit of the build 27 | Revision = "unknown" 28 | // LastCommit indicates the date of the commit 29 | LastCommit time.Time 30 | // Modified indicates if the binary was built from a unmodified source code 31 | Modified = true 32 | ) 33 | 34 | type appConfig struct { 35 | Host string `yaml:"host"` 36 | } 37 | 38 | type configSettings struct { 39 | Name string `yaml:"name"` 40 | File string `yaml:"file"` 41 | } 42 | 43 | type composeInfo struct { 44 | Configs map[string]configSettings `yaml:"configs"` 45 | Secrets map[string]configSettings `yaml:"secrets"` 46 | } 47 | 48 | func fileHash(filePath string) (string, error) { 49 | var fileHash string 50 | 51 | file, err := os.Open(filePath) 52 | if err != nil { 53 | return fileHash, err 54 | } 55 | 56 | defer func() { _ = file.Close() }() 57 | 58 | hash := sha256.New() 59 | 60 | if _, err := io.Copy(hash, file); err != nil { 61 | return fileHash, err 62 | } 63 | 64 | hashBytes := hash.Sum(nil)[:8] 65 | fileHash = hex.EncodeToString(hashBytes) 66 | 67 | return fileHash, nil 68 | } 69 | 70 | func newFileEnvironment(filePath string) (string, error) { 71 | variable := strings.ToUpper(path.Base(filePath)) 72 | 73 | re := regexp.MustCompile(`[^A-Z0-9_]`) 74 | variable = re.ReplaceAllString(variable, "_") 75 | 76 | version, err := fileHash(filePath) 77 | if err != nil { 78 | return "", err 79 | } 80 | 81 | return fmt.Sprintf("%s=%s", variable, version), nil 82 | } 83 | 84 | func environmentFromYaml(yamlFile []byte) ([]string, error) { 85 | var environment []string 86 | var cfg composeInfo 87 | 88 | err := yaml.Unmarshal(yamlFile, &cfg) 89 | if err != nil { 90 | return environment, err 91 | } 92 | 93 | for _, v := range cfg.Configs { 94 | if v.Name != "" { 95 | env, err := newFileEnvironment(v.File) 96 | if err != nil { 97 | log.Printf("Cannot generate environment for config file %s: %s", v.File, err.Error()) 98 | } else { 99 | log.Printf("Using config %s\n", env) 100 | environment = append(environment, env) 101 | } 102 | } 103 | } 104 | 105 | for _, v := range cfg.Secrets { 106 | if v.Name != "" { 107 | env, err := newFileEnvironment(v.File) 108 | if err != nil { 109 | log.Printf("Cannot generate environment for secret file %s: %s", v.File, err.Error()) 110 | } else { 111 | log.Printf("Using secret %s\n", env) 112 | environment = append(environment, env) 113 | } 114 | } 115 | } 116 | 117 | return environment, nil 118 | } 119 | 120 | func loadEnvFromConfigFiles(filenames []string, stdin io.Reader) ([]string, error) { 121 | var envs []string 122 | 123 | for _, filename := range filenames { 124 | env, err := loadEnvFromConfigFile(filename, stdin) 125 | if err != nil { 126 | return envs, err 127 | } 128 | envs = append(envs, env...) 129 | } 130 | 131 | return envs, nil 132 | } 133 | 134 | func loadEnvFromConfigFile(filename string, stdin io.Reader) ([]string, error) { 135 | var yamlFile []byte 136 | var err error 137 | 138 | if filename == "-" { 139 | yamlFile, err = io.ReadAll(stdin) 140 | } else { 141 | yamlFile, err = os.ReadFile(filename) 142 | } 143 | 144 | if err != nil { 145 | return nil, err 146 | } 147 | 148 | return environmentFromYaml(yamlFile) 149 | } 150 | 151 | func loadAppConfig(filename string) (*appConfig, error) { 152 | cfg := &appConfig{} 153 | targetPath, err := os.Getwd() 154 | if err != nil { 155 | return nil, err 156 | } 157 | 158 | rootDir := filepath.Join(filepath.VolumeName(targetPath), "/") 159 | 160 | for { 161 | configPath := filepath.Join(targetPath, filename) 162 | data, err := os.ReadFile(configPath) 163 | if err != nil { 164 | if os.IsNotExist(err) { 165 | if targetPath == rootDir { 166 | return cfg, nil 167 | } 168 | targetPath = filepath.Dir(targetPath) 169 | continue 170 | } 171 | break 172 | } 173 | 174 | log.Printf("Reading config file: %s", configPath) 175 | err = yaml.Unmarshal(data, cfg) 176 | if err != nil { 177 | break 178 | } 179 | 180 | return cfg, nil 181 | } 182 | 183 | return nil, err 184 | } 185 | 186 | func loadVersionInfo() { 187 | info, ok := debug.ReadBuildInfo() 188 | if ok { 189 | for _, setting := range info.Settings { 190 | switch setting.Key { 191 | case "vcs.revision": 192 | Revision = setting.Value 193 | case "vcs.time": 194 | LastCommit, _ = time.Parse(time.RFC3339, setting.Value) 195 | case "vcs.modified": 196 | Modified = setting.Value == "true" 197 | } 198 | } 199 | } 200 | } 201 | 202 | var auth = flag.BoolP("with-registry-auth", "a", false, "Send registry authentication details to Swarm agents") 203 | var prune = flag.BoolP("prune", "p", false, "Prune services that are no longer referenced") 204 | var host = flag.StringP("host", "H", "", "Daemon socket(s) to connect to") 205 | var composeFiles = flag.StringSliceP("compose-file", "c", []string{"docker-compose.yml"}, "Path to a Compose file, or '-' to read from stdin") 206 | var version = flag.BoolP("version", "v", false, "Show version") 207 | 208 | func main() { 209 | flag.CommandLine.Init(os.Args[0], flag.ContinueOnError) 210 | err := flag.CommandLine.Parse(os.Args[1:]) 211 | log.SetFlags(0) 212 | 213 | if err == flag.ErrHelp { 214 | os.Exit(0) 215 | } else if err != nil { 216 | log.Fatal(err) 217 | } 218 | 219 | if *version { 220 | loadVersionInfo() 221 | fmt.Printf("docker-deploy version: %s, commit: %s, date: %s, clean build: %t\n", Tag, Revision, LastCommit, Modified) 222 | return 223 | } 224 | 225 | cfg, err := loadAppConfig(".docker-deploy.yml") 226 | if err != nil { 227 | log.Fatal(err) 228 | } 229 | 230 | var buf bytes.Buffer 231 | tee := io.TeeReader(os.Stdin, &buf) 232 | env, err := loadEnvFromConfigFiles(*composeFiles, tee) 233 | if err != nil { 234 | log.Fatal(err) 235 | } 236 | 237 | args := []string{"stack", "deploy"} 238 | for _, composeFile := range *composeFiles { 239 | args = append(args, "--compose-file", composeFile) 240 | } 241 | 242 | if *host != "" { 243 | args = append([]string{"--host", *host}, args...) 244 | } else if cfg.Host != "" { 245 | args = append([]string{"--host", cfg.Host}, args...) 246 | } 247 | 248 | if *auth { 249 | args = append(args, "--with-registry-auth") 250 | } 251 | 252 | if *prune { 253 | args = append(args, "--prune") 254 | } 255 | 256 | if len(flag.Args()) == 0 { 257 | dirname, err := os.Getwd() 258 | if err != nil { 259 | log.Fatalf("No stack name provided and cannot read the current directory: %s", err.Error()) 260 | } 261 | 262 | args = append(args, filepath.Base(dirname)) 263 | } else { 264 | args = append(args, flag.Args()...) 265 | } 266 | 267 | log.Printf("Running: docker %v", strings.Join(args, " ")) 268 | 269 | cmd := exec.Command("docker", args...) 270 | 271 | if len(env) > 0 { 272 | cmd.Env = append(os.Environ(), env...) 273 | } 274 | 275 | cmd.Stdout = os.Stdout 276 | cmd.Stderr = os.Stderr 277 | 278 | if buf.Len() > 0 { 279 | cmd.Stdin = &buf 280 | } else { 281 | cmd.Stdin = os.Stdin 282 | } 283 | 284 | err = cmd.Run() 285 | if err != nil { 286 | if exiterr, ok := err.(*exec.ExitError); ok { 287 | os.Exit(exiterr.ExitCode()) 288 | } else { 289 | log.Fatal(err) 290 | } 291 | } 292 | } 293 | --------------------------------------------------------------------------------