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@@ -0,0 +1,377 @@
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+package docker
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+
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+import (
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+ "bufio"
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+ "encoding/json"
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+ "fmt"
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+ "github.com/dotcloud/docker/utils"
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+ "io"
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+ "io/ioutil"
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+ "os"
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+ "path"
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+ "reflect"
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+ "strings"
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+)
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+
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+type BuildFile interface {
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+ Build(io.Reader, io.Reader) (string, error)
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+ CmdFrom(string) error
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+ CmdRun(string) error
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+}
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+
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+type buildFile struct {
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+ runtime *Runtime
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+ builder *Builder
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+ srv *Server
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+
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+ image string
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+ maintainer string
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+ config *Config
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+ context string
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+
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+ tmpContainers map[string]struct{}
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+ tmpImages map[string]struct{}
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+
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+ needCommit bool
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+
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+ out io.Writer
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+}
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+
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+func (b *buildFile) clearTmp(containers, images map[string]struct{}) {
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+ for c := range containers {
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+ tmp := b.runtime.Get(c)
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+ b.runtime.Destroy(tmp)
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+ utils.Debugf("Removing container %s", c)
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+ }
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+ for i := range images {
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+ b.runtime.graph.Delete(i)
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+ utils.Debugf("Removing image %s", i)
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+ }
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+}
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+
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+func (b *buildFile) CmdFrom(name string) error {
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+ image, err := b.runtime.repositories.LookupImage(name)
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+ if err != nil {
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+ if b.runtime.graph.IsNotExist(err) {
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+
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+ var tag, remote string
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+ if strings.Contains(name, ":") {
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+ remoteParts := strings.Split(name, ":")
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+ tag = remoteParts[1]
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+ remote = remoteParts[0]
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+ } else {
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+ remote = name
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+ }
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+
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+ if err := b.srv.ImagePull(remote, tag, "", b.out, utils.NewStreamFormatter(false)); err != nil {
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+ return err
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+ }
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+
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+ image, err = b.runtime.repositories.LookupImage(name)
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+ if err != nil {
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+ return err
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+ }
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+ } else {
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+ return err
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+ }
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+ }
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+ b.image = image.Id
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+ b.config = &Config{}
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+ return nil
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+}
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+
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+func (b *buildFile) CmdMaintainer(name string) error {
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+ b.needCommit = true
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+ b.maintainer = name
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+ return nil
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+}
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+
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+func (b *buildFile) CmdRun(args string) error {
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+ if b.image == "" {
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+ return fmt.Errorf("Please provide a source image with `from` prior to run")
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+ }
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+ config, _, err := ParseRun([]string{b.image, "/bin/sh", "-c", args}, nil)
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+ if err != nil {
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+ return err
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+ }
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+
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+ cmd, env := b.config.Cmd, b.config.Env
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+ b.config.Cmd = nil
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+ MergeConfig(b.config, config)
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+
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+ if cache, err := b.srv.ImageGetCached(b.image, config); err != nil {
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+ return err
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+ } else if cache != nil {
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+ utils.Debugf("Use cached version")
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+ b.image = cache.Id
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+ return nil
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+ }
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+
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+ cid, err := b.run()
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+ if err != nil {
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+ return err
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+ }
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+ b.config.Cmd, b.config.Env = cmd, env
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+ return b.commit(cid)
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+}
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+
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+func (b *buildFile) CmdEnv(args string) error {
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+ b.needCommit = true
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+ tmp := strings.SplitN(args, " ", 2)
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+ if len(tmp) != 2 {
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+ return fmt.Errorf("Invalid ENV format")
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+ }
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+ key := strings.Trim(tmp[0], " ")
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+ value := strings.Trim(tmp[1], " ")
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+
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+ for i, elem := range b.config.Env {
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+ if strings.HasPrefix(elem, key+"=") {
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+ b.config.Env[i] = key + "=" + value
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+ return nil
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+ }
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+ }
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+ b.config.Env = append(b.config.Env, key+"="+value)
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+ return nil
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+}
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+
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+func (b *buildFile) CmdCmd(args string) error {
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+ b.needCommit = true
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+ var cmd []string
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+ if err := json.Unmarshal([]byte(args), &cmd); err != nil {
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+ utils.Debugf("Error unmarshalling: %s, using /bin/sh -c", err)
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+ b.config.Cmd = []string{"/bin/sh", "-c", args}
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+ } else {
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+ b.config.Cmd = cmd
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+ }
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+ return nil
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+}
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+
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+func (b *buildFile) CmdExpose(args string) error {
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+ ports := strings.Split(args, " ")
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+ b.config.PortSpecs = append(ports, b.config.PortSpecs...)
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+ return nil
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+}
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+
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+func (b *buildFile) CmdInsert(args string) error {
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+ if b.image == "" {
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+ return fmt.Errorf("Please provide a source image with `from` prior to insert")
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+ }
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+ tmp := strings.SplitN(args, " ", 2)
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+ if len(tmp) != 2 {
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+ return fmt.Errorf("Invalid INSERT format")
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+ }
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+ sourceUrl := strings.Trim(tmp[0], " ")
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+ destPath := strings.Trim(tmp[1], " ")
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+
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+ file, err := utils.Download(sourceUrl, b.out)
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+ if err != nil {
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+ return err
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+ }
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+ defer file.Body.Close()
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+
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+ b.config.Cmd = []string{"echo", "INSERT", sourceUrl, "in", destPath}
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+ cid, err := b.run()
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+ if err != nil {
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+ return err
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+ }
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+
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+ container := b.runtime.Get(cid)
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+ if container == nil {
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+ return fmt.Errorf("An error occured while creating the container")
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+ }
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+
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+ if err := container.Inject(file.Body, destPath); err != nil {
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+ return err
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+ }
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+
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+ return b.commit(cid)
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+}
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+
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+func (b *buildFile) CmdAdd(args string) error {
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+ if b.context == "" {
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+ return fmt.Errorf("No context given. Impossible to use ADD")
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+ }
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+ tmp := strings.SplitN(args, " ", 2)
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+ if len(tmp) != 2 {
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+ return fmt.Errorf("Invalid INSERT format")
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+ }
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+ orig := strings.Trim(tmp[0], " ")
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+ dest := strings.Trim(tmp[1], " ")
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+
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+ b.config.Cmd = []string{"echo", "PUSH", orig, "in", dest}
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+ cid, err := b.run()
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+ if err != nil {
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+ return err
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+ }
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+
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+ container := b.runtime.Get(cid)
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+ if container == nil {
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+ return fmt.Errorf("Error while creating the container (CmdAdd)")
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+ }
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+
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+ if err := os.MkdirAll(path.Join(container.rwPath(), dest), 0700); err != nil {
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+ return err
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+ }
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+
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+ origPath := path.Join(b.context, orig)
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+ destPath := path.Join(container.rwPath(), dest)
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+
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+ fi, err := os.Stat(origPath)
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+ if err != nil {
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+ return err
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+ }
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+ if fi.IsDir() {
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+ files, err := ioutil.ReadDir(path.Join(b.context, orig))
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+ if err != nil {
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+ return err
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+ }
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+ for _, fi := range files {
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+ if err := utils.CopyDirectory(path.Join(origPath, fi.Name()), path.Join(destPath, fi.Name())); err != nil {
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+ return err
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+ }
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+ }
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+ } else {
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+ if err := utils.CopyDirectory(origPath, destPath); err != nil {
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+ return err
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+ }
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+ }
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+
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+ return b.commit(cid)
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+}
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+
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+func (b *buildFile) run() (string, error) {
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+ if b.image == "" {
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+ return "", fmt.Errorf("Please provide a source image with `from` prior to run")
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+ }
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+ b.config.Image = b.image
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+
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+ // Create the container and start it
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+ c, err := b.builder.Create(b.config)
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+ if err != nil {
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+ return "", err
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+ }
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+ b.tmpContainers[c.Id] = struct{}{}
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+
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+ //start the container
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+ if err := c.Start(); err != nil {
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+ return "", err
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+ }
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+
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+ // Wait for it to finish
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+ if ret := c.Wait(); ret != 0 {
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+ return "", fmt.Errorf("The command %v returned a non-zero code: %d", b.config.Cmd, ret)
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+ }
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+
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+ return c.Id, nil
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+}
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+
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+func (b *buildFile) commit(id string) error {
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+ if b.image == "" {
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+ return fmt.Errorf("Please provide a source image with `from` prior to commit")
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+ }
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+ b.config.Image = b.image
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+ if id == "" {
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+ cmd := b.config.Cmd
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+ b.config.Cmd = []string{"true"}
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+ if cid, err := b.run(); err != nil {
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+ return err
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+ } else {
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+ id = cid
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+ }
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+ b.config.Cmd = cmd
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+ }
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+
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+ container := b.runtime.Get(id)
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+ if container == nil {
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+ return fmt.Errorf("An error occured while creating the container")
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+ }
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+
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+ // Commit the container
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+ image, err := b.builder.Commit(container, "", "", "", b.maintainer, nil)
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+ if err != nil {
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+ return err
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+ }
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+ b.tmpImages[image.Id] = struct{}{}
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+ b.image = image.Id
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+ b.needCommit = false
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+ return nil
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+}
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+
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+func (b *buildFile) Build(dockerfile, context io.Reader) (string, error) {
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+ defer b.clearTmp(b.tmpContainers, b.tmpImages)
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+
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+ if context != nil {
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+ name, err := ioutil.TempDir("/tmp", "docker-build")
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+ if err != nil {
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+ return "", err
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+ }
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+ if err := Untar(context, name); err != nil {
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+ return "", err
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+ }
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+ defer os.RemoveAll(name)
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+ b.context = name
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+ }
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+ file := bufio.NewReader(dockerfile)
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+ for {
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+ line, err := file.ReadString('\n')
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+ if err != nil {
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+ if err == io.EOF {
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+ break
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+ }
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+ return "", err
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+ }
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+ line = strings.Replace(strings.TrimSpace(line), " ", " ", 1)
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+ // Skip comments and empty line
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+ if len(line) == 0 || line[0] == '#' {
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+ continue
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+ }
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+ tmp := strings.SplitN(line, " ", 2)
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+ if len(tmp) != 2 {
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+ return "", fmt.Errorf("Invalid Dockerfile format")
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+ }
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+ instruction := strings.ToLower(strings.Trim(tmp[0], " "))
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+ arguments := strings.Trim(tmp[1], " ")
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+
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+ fmt.Fprintf(b.out, "%s %s (%s)\n", strings.ToUpper(instruction), arguments, b.image)
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+
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+ method, exists := reflect.TypeOf(b).MethodByName("Cmd" + strings.ToUpper(instruction[:1]) + strings.ToLower(instruction[1:]))
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+ if !exists {
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+ fmt.Fprintf(b.out, "Skipping unknown instruction %s\n", strings.ToUpper(instruction))
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+ }
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+ ret := method.Func.Call([]reflect.Value{reflect.ValueOf(b), reflect.ValueOf(arguments)})[0].Interface()
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+ if ret != nil {
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+ return "", ret.(error)
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+ }
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+
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+ fmt.Fprintf(b.out, "===> %v\n", b.image)
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+ }
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+ if b.needCommit {
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+ if err := b.commit(""); err != nil {
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+ return "", err
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+ }
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+ }
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+ if b.image != "" {
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+ // The build is successful, keep the temporary containers and images
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+ for i := range b.tmpImages {
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+ delete(b.tmpImages, i)
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+ }
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+ fmt.Fprintf(b.out, "Build success.\n Image id:\n%s\n", b.image)
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+ return b.image, nil
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+ }
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+ for i := range b.tmpContainers {
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+ delete(b.tmpContainers, i)
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+ }
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+ return "", fmt.Errorf("An error occured during the build\n")
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+}
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+
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+func NewBuildFile(srv *Server, out io.Writer) BuildFile {
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+ return &buildFile{
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+ builder: NewBuilder(srv.runtime),
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+ runtime: srv.runtime,
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+ srv: srv,
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+ config: &Config{},
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+ out: out,
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+ tmpContainers: make(map[string]struct{}),
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+ tmpImages: make(map[string]struct{}),
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+ }
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|
+}
|