package plugin import ( "fmt" "io/ioutil" "os" "os/exec" "path/filepath" "time" "github.com/sirupsen/logrus" "github.com/urfave/cli/v2" ) // Daemon defines Docker daemon parameters. type Daemon struct { Registry string // Docker registry Mirror string // Docker registry mirror Insecure bool // Docker daemon enable insecure registries StorageDriver string // Docker daemon storage driver StoragePath string // Docker daemon storage path Disabled bool // DOcker daemon is disabled (already running) Debug bool // Docker daemon started in debug mode Bip string // Docker daemon network bridge IP address DNS cli.StringSlice // Docker daemon dns server DNSSearch cli.StringSlice // Docker daemon dns search domain MTU string // Docker daemon mtu setting IPv6 bool // Docker daemon IPv6 networking Experimental bool // Docker daemon enable experimental mode } // Login defines Docker login parameters. type Login struct { Registry string // Docker registry address Username string // Docker registry username Password string // Docker registry password Email string // Docker registry email Config string // Docker Auth Config } // Build defines Docker build parameters. type Build struct { Remote string // Git remote URL Name string // Git commit sha used as docker default named tag Ref string // Git commit ref Branch string // Git repository branch Dockerfile string // Docker build Dockerfile Context string // Docker build context TagsAuto bool // Docker build auto tag TagsSuffix string // Docker build tags with suffix Tags cli.StringSlice // Docker build tags Platforms cli.StringSlice // Docker build target platforms Args cli.StringSlice // Docker build args ArgsEnv cli.StringSlice // Docker build args from env Target string // Docker build target Squash bool // Docker build squash Pull bool // Docker build pull CacheFrom cli.StringSlice // Docker build cache-from Compress bool // Docker build compress Repo string // Docker build repository NoCache bool // Docker build no-cache AddHost cli.StringSlice // Docker build add-host Quiet bool // Docker build quiet } // Settings for the Plugin. type Settings struct { Daemon Daemon Login Login Build Build Dryrun bool Cleanup bool } // Validate handles the settings validation of the plugin. func (p *Plugin) Validate() error { p.settings.Daemon.Registry = p.settings.Login.Registry if p.settings.Build.TagsAuto { // return true if tag event or default branch if UseDefaultTag( p.settings.Build.Ref, p.settings.Build.Branch, ) { tag, err := DefaultTagSuffix( p.settings.Build.Ref, p.settings.Build.TagsSuffix, ) if err != nil { logrus.Printf("cannot build docker image for %s, invalid semantic version", p.settings.Build.Ref) return err } p.settings.Build.Tags = *cli.NewStringSlice(tag...) } else { logrus.Printf("skipping automated docker build for %s", p.settings.Build.Ref) return nil } } return nil } // Execute provides the implementation of the plugin. func (p *Plugin) Execute() error { // start the Docker daemon server if !p.settings.Daemon.Disabled { p.startDaemon() } // poll the docker daemon until it is started. This ensures the daemon is // ready to accept connections before we proceed. for i := 0; i < 15; i++ { cmd := commandInfo() err := cmd.Run() if err == nil { break } time.Sleep(time.Second * 1) } // Create Auth Config File if p.settings.Login.Config != "" { os.MkdirAll(dockerHome, 0600) path := filepath.Join(dockerHome, "config.json") err := ioutil.WriteFile(path, []byte(p.settings.Login.Config), 0600) if err != nil { return fmt.Errorf("error writing config.json: %s", err) } } // login to the Docker registry if p.settings.Login.Password != "" { cmd := commandLogin(p.settings.Login) err := cmd.Run() if err != nil { return fmt.Errorf("error authenticating: %s", err) } } switch { case p.settings.Login.Password != "": fmt.Println("Detected registry credentials") case p.settings.Login.Config != "": fmt.Println("Detected registry credentials file") default: fmt.Println("Registry credentials or Docker config not provided. Guest mode enabled.") } if p.settings.Build.Squash && !p.settings.Daemon.Experimental { fmt.Println("Squash build flag is only available when Docker deamon is started with experimental flag. Ignoring...") p.settings.Build.Squash = false } // add proxy build args addProxyBuildArgs(&p.settings.Build) var cmds []*exec.Cmd cmds = append(cmds, commandVersion()) // docker version cmds = append(cmds, commandInfo()) // docker info cmds = append(cmds, commandBuilder()) cmds = append(cmds, commandBuildx()) // pre-pull cache images for _, img := range p.settings.Build.CacheFrom.Value() { cmds = append(cmds, commandPull(img)) } cmds = append(cmds, commandBuild(p.settings.Build)) // docker build for _, tag := range p.settings.Build.Tags.Value() { cmds = append(cmds, commandTag(p.settings.Build, tag)) // docker tag if !p.settings.Dryrun { cmds = append(cmds, commandPush(p.settings.Build, tag)) // docker push } } if p.settings.Cleanup { cmds = append(cmds, commandRmi(p.settings.Build.Name)) // docker rmi cmds = append(cmds, commandPrune()) // docker system prune -f } // execute all commands in batch mode. for _, cmd := range cmds { cmd.Stdout = os.Stdout cmd.Stderr = os.Stderr trace(cmd) err := cmd.Run() if err != nil && isCommandPull(cmd.Args) { fmt.Printf("Could not pull cache-from image %s. Ignoring...\n", cmd.Args[2]) } else if err != nil && isCommandPrune(cmd.Args) { fmt.Printf("Could not prune system containers. Ignoring...\n") } else if err != nil && isCommandRmi(cmd.Args) { fmt.Printf("Could not remove image %s. Ignoring...\n", cmd.Args[2]) } else if err != nil { return err } } return nil }