func runExport(args *docopt.Args, client *controller.Client) error {
var dest io.Writer = os.Stdout
if filename := args.String["--file"]; filename != "" {
f, err := os.Create(filename)
if err != nil {
return fmt.Errorf("error creating export file: %s", err)
}
defer f.Close()
dest = f
}
app, err := client.GetApp(mustApp())
if err != nil {
return fmt.Errorf("error getting app: %s", err)
}
tw := backup.NewTarWriter(app.Name, dest)
defer tw.Close()
if err := tw.WriteJSON("app.json", app); err != nil {
return fmt.Errorf("error exporting app: %s", err)
}
routes, err := client.RouteList(mustApp())
if err != nil {
return fmt.Errorf("error getting routes: %s", err)
}
if err := tw.WriteJSON("routes.json", routes); err != nil {
return fmt.Errorf("error exporting routes: %s", err)
}
release, err := client.GetAppRelease(mustApp())
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving app: %s", err)
} else if err == nil {
// Do not allow the exporting of passwords.
delete(release.Env, "REDIS_PASSWORD")
if err := tw.WriteJSON("release.json", release); err != nil {
return fmt.Errorf("error exporting release: %s", err)
}
}
artifact, err := client.GetArtifact(release.ArtifactID)
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving artifact: %s", err)
} else if err == nil {
if err := tw.WriteJSON("artifact.json", artifact); err != nil {
return fmt.Errorf("error exporting artifact: %s", err)
}
}
formation, err := client.GetFormation(mustApp(), release.ID)
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving formation: %s", err)
} else if err == nil {
if err := tw.WriteJSON("formation.json", formation); err != nil {
return fmt.Errorf("error exporting formation: %s", err)
}
}
var bar *pb.ProgressBar
if !args.Bool["--quiet"] && term.IsTerminal(os.Stderr.Fd()) {
bar = pb.New(0)
bar.SetUnits(pb.U_BYTES)
bar.ShowBar = false
bar.ShowSpeed = true
bar.Output = os.Stderr
bar.Start()
defer bar.Finish()
}
if slug, ok := release.Env["SLUG_URL"]; ok {
reqR, reqW := io.Pipe()
config := runConfig{
App: mustApp(),
Release: release.ID,
DisableLog: true,
Entrypoint: []string{"curl"},
Args: []string{"--include", "--raw", slug},
Stdout: reqW,
Stderr: ioutil.Discard,
}
if bar != nil {
config.Stdout = io.MultiWriter(config.Stdout, bar)
}
go func() {
if err := runJob(client, config); err != nil {
shutdown.Fatalf("error retrieving slug: %s", err)
}
}()
res, err := http.ReadResponse(bufio.NewReader(reqR), nil)
if err != nil {
return fmt.Errorf("error reading slug response: %s", err)
}
if res.StatusCode != 200 {
return fmt.Errorf("unexpected status getting slug: %d", res.StatusCode)
}
length, err := strconv.Atoi(res.Header.Get("Content-Length"))
if err != nil {
return fmt.Errorf("slug has missing or malformed Content-Length")
}
if err := tw.WriteHeader("slug.tar.gz", length); err != nil {
return fmt.Errorf("error writing slug header: %s", err)
}
if _, err := io.Copy(tw, res.Body); err != nil {
return fmt.Errorf("error writing slug: %s", err)
}
res.Body.Close()
}
if config, err := getAppPgRunConfig(client); err == nil {
configPgDump(config)
if err := tw.WriteCommandOutput(client, "postgres.dump", config.App, &ct.NewJob{
ReleaseID: config.Release,
Entrypoint: config.Entrypoint,
Cmd: config.Args,
Env: config.Env,
DisableLog: config.DisableLog,
}); err != nil {
return fmt.Errorf("error creating postgres dump: %s", err)
}
}
return nil
}
func runExport(args *docopt.Args, client controller.Client) error {
var dest io.Writer = os.Stdout
if filename := args.String["--file"]; filename != "" {
f, err := os.Create(filename)
if err != nil {
return fmt.Errorf("error creating export file: %s", err)
}
defer f.Close()
dest = f
}
app, err := client.GetApp(mustApp())
if err != nil {
return fmt.Errorf("error getting app: %s", err)
}
var bar backup.ProgressBar
if !args.Bool["--quiet"] && term.IsTerminal(os.Stderr.Fd()) {
b := pb.New(0)
b.SetUnits(pb.U_BYTES)
b.ShowBar = false
b.ShowSpeed = true
b.Output = os.Stderr
b.Start()
defer b.Finish()
bar = b
}
tw := backup.NewTarWriter(app.Name, dest, bar)
defer tw.Close()
if err := tw.WriteJSON("app.json", app); err != nil {
return fmt.Errorf("error exporting app: %s", err)
}
routes, err := client.RouteList(mustApp())
if err != nil {
return fmt.Errorf("error getting routes: %s", err)
}
if err := tw.WriteJSON("routes.json", routes); err != nil {
return fmt.Errorf("error exporting routes: %s", err)
}
release, err := client.GetAppRelease(mustApp())
if err == controller.ErrNotFound {
// if the app has no release then there is nothing more to export
return nil
} else if err != nil {
return fmt.Errorf("error retrieving app: %s", err)
} else if err == nil {
// Do not allow the exporting of passwords.
delete(release.Env, "REDIS_PASSWORD")
if err := tw.WriteJSON("release.json", release); err != nil {
return fmt.Errorf("error exporting release: %s", err)
}
}
var artifact *ct.Artifact
if artifactID := release.ImageArtifactID(); artifactID != "" {
artifact, err = client.GetArtifact(artifactID)
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving artifact: %s", err)
} else if err == nil {
if err := tw.WriteJSON("artifact.json", artifact); err != nil {
return fmt.Errorf("error exporting artifact: %s", err)
}
}
}
formation, err := client.GetFormation(mustApp(), release.ID)
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving formation: %s", err)
} else if err == nil {
if err := tw.WriteJSON("formation.json", formation); err != nil {
return fmt.Errorf("error exporting formation: %s", err)
}
}
// if the release was deployed via docker-receive, pull the docker
// image and add it to the export using "docker save"
if release.IsDockerReceiveDeploy() && artifact != nil {
cluster, err := getCluster()
if err != nil {
return err
}
host, err := cluster.DockerPushHost()
if err != nil {
return err
}
// the artifact will have an internal discoverd URL which will
// not work if the Docker daemon is outside the cluster, so
// generate a reference using the configured DockerPushURL
repo := artifact.Meta["docker-receive.repository"]
digest := artifact.Meta["docker-receive.digest"]
ref := fmt.Sprintf("%s/%s@%s", host, repo, digest)
// pull the Docker image
cmd := exec.Command("docker", "pull", ref)
log.Printf("flynn: pulling Docker image with %q", strings.Join(cmd.Args, " "))
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
return err
}
// give the image an explicit, random tag so that "docker save"
// will export an image that we can reference on import (just
// using the digest is not enough as "docker inspect" only
// works with tags)
tag := fmt.Sprintf("%s:flynn-export-%s", repo, random.String(8))
if out, err := exec.Command("docker", "tag", "--force", ref, tag).CombinedOutput(); err != nil {
return fmt.Errorf("error tagging docker image: %s: %q", err, out)
}
defer exec.Command("docker", "rmi", tag).Run()
if err := dockerSave(tag, tw, bar); err != nil {
return fmt.Errorf("error exporting docker image: %s", err)
}
// add the tag to the backup so we know how to reference the
// image once it has been imported
config := struct {
Tag string `json:"tag"`
}{tag}
if err := tw.WriteJSON("docker-image.json", &config); err != nil {
return fmt.Errorf("error exporting docker image: %s", err)
}
}
// expect releases deployed via git to have a slug as their first file
// artifact, and legacy releases to have SLUG_URL set
var slugURL string
if release.IsGitDeploy() && len(release.FileArtifactIDs()) > 0 {
slugArtifact, err := client.GetArtifact(release.FileArtifactIDs()[0])
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving slug artifact: %s", err)
} else if err == nil {
slugURL = slugArtifact.URI
}
} else if u, ok := release.Env["SLUG_URL"]; ok {
slugURL = u
}
if slugURL != "" {
reqR, reqW := io.Pipe()
config := runConfig{
App: mustApp(),
Release: release.ID,
DisableLog: true,
Args: []string{"curl", "--include", "--location", "--raw", slugURL},
Stdout: reqW,
Stderr: ioutil.Discard,
}
if bar != nil {
config.Stdout = io.MultiWriter(config.Stdout, bar)
}
go func() {
if err := runJob(client, config); err != nil {
shutdown.Fatalf("error retrieving slug: %s", err)
}
}()
req := bufio.NewReader(reqR)
var res *http.Response
maxRedirects := 5
for i := 0; i < maxRedirects; i++ {
res, err = http.ReadResponse(req, nil)
if err != nil {
return fmt.Errorf("error reading slug response: %s", err)
}
if res.StatusCode != http.StatusFound {
break
}
}
if res.StatusCode != http.StatusOK {
return fmt.Errorf("unexpected status getting slug: %d", res.StatusCode)
}
length, err := strconv.Atoi(res.Header.Get("Content-Length"))
if err != nil {
return fmt.Errorf("slug has missing or malformed Content-Length")
}
if err := tw.WriteHeader("slug.tar.gz", length); err != nil {
return fmt.Errorf("error writing slug header: %s", err)
}
if _, err := io.Copy(tw, res.Body); err != nil {
return fmt.Errorf("error writing slug: %s", err)
}
res.Body.Close()
}
if pgConfig, err := getAppPgRunConfig(client); err == nil {
configPgDump(pgConfig)
if err := tw.WriteCommandOutput(client, "postgres.dump", pgConfig.App, &ct.NewJob{
ReleaseID: pgConfig.Release,
Args: pgConfig.Args,
Env: pgConfig.Env,
DisableLog: pgConfig.DisableLog,
}); err != nil {
return fmt.Errorf("error creating postgres dump: %s", err)
}
}
if mysqlConfig, err := getAppMysqlRunConfig(client); err == nil {
configMysqlDump(mysqlConfig)
if err := tw.WriteCommandOutput(client, "mysql.dump", mysqlConfig.App, &ct.NewJob{
ReleaseID: mysqlConfig.Release,
Args: mysqlConfig.Args,
Env: mysqlConfig.Env,
DisableLog: mysqlConfig.DisableLog,
}); err != nil {
return fmt.Errorf("error creating mysql dump: %s", err)
}
}
return nil
}
func runExport(args *docopt.Args, client controller.Client) error {
var dest io.Writer = os.Stdout
if filename := args.String["--file"]; filename != "" {
f, err := os.Create(filename)
if err != nil {
return fmt.Errorf("error creating export file: %s", err)
}
defer f.Close()
dest = f
}
app, err := client.GetApp(mustApp())
if err != nil {
return fmt.Errorf("error getting app: %s", err)
}
var bar backup.ProgressBar
if !args.Bool["--quiet"] && term.IsTerminal(os.Stderr.Fd()) {
b := pb.New(0)
b.SetUnits(pb.U_BYTES)
b.ShowBar = false
b.ShowSpeed = true
b.Output = os.Stderr
b.Start()
defer b.Finish()
bar = b
}
tw := backup.NewTarWriter(app.Name, dest, bar)
defer tw.Close()
if err := tw.WriteJSON("app.json", app); err != nil {
return fmt.Errorf("error exporting app: %s", err)
}
routes, err := client.RouteList(mustApp())
if err != nil {
return fmt.Errorf("error getting routes: %s", err)
}
if err := tw.WriteJSON("routes.json", routes); err != nil {
return fmt.Errorf("error exporting routes: %s", err)
}
release, err := client.GetAppRelease(mustApp())
if err == controller.ErrNotFound {
// if the app has no release then there is nothing more to export
return nil
} else if err != nil {
return fmt.Errorf("error retrieving app: %s", err)
} else if err == nil {
// Do not allow the exporting of passwords.
delete(release.Env, "REDIS_PASSWORD")
if err := tw.WriteJSON("release.json", release); err != nil {
return fmt.Errorf("error exporting release: %s", err)
}
}
if artifactID := release.ImageArtifactID(); artifactID != "" {
artifact, err := client.GetArtifact(artifactID)
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving artifact: %s", err)
} else if err == nil {
if err := tw.WriteJSON("artifact.json", artifact); err != nil {
return fmt.Errorf("error exporting artifact: %s", err)
}
}
}
formation, err := client.GetFormation(mustApp(), release.ID)
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving formation: %s", err)
} else if err == nil {
if err := tw.WriteJSON("formation.json", formation); err != nil {
return fmt.Errorf("error exporting formation: %s", err)
}
}
// expect releases deployed via git to have a slug as their first file
// artifact, and legacy releases to have SLUG_URL set
var slugURL string
if release.IsGitDeploy() && len(release.FileArtifactIDs()) > 0 {
slugArtifact, err := client.GetArtifact(release.FileArtifactIDs()[0])
if err != nil && err != controller.ErrNotFound {
return fmt.Errorf("error retrieving slug artifact: %s", err)
} else if err == nil {
slugURL = slugArtifact.URI
}
} else if u, ok := release.Env["SLUG_URL"]; ok {
slugURL = u
}
if slugURL != "" {
reqR, reqW := io.Pipe()
config := runConfig{
App: mustApp(),
Release: release.ID,
DisableLog: true,
Entrypoint: []string{"curl"},
Args: []string{"--include", "--raw", slugURL},
Stdout: reqW,
Stderr: ioutil.Discard,
}
if bar != nil {
config.Stdout = io.MultiWriter(config.Stdout, bar)
}
go func() {
if err := runJob(client, config); err != nil {
shutdown.Fatalf("error retrieving slug: %s", err)
}
}()
res, err := http.ReadResponse(bufio.NewReader(reqR), nil)
if err != nil {
return fmt.Errorf("error reading slug response: %s", err)
}
if res.StatusCode != 200 {
return fmt.Errorf("unexpected status getting slug: %d", res.StatusCode)
}
length, err := strconv.Atoi(res.Header.Get("Content-Length"))
if err != nil {
return fmt.Errorf("slug has missing or malformed Content-Length")
}
if err := tw.WriteHeader("slug.tar.gz", length); err != nil {
return fmt.Errorf("error writing slug header: %s", err)
}
if _, err := io.Copy(tw, res.Body); err != nil {
return fmt.Errorf("error writing slug: %s", err)
}
res.Body.Close()
}
if pgConfig, err := getAppPgRunConfig(client); err == nil {
configPgDump(pgConfig)
if err := tw.WriteCommandOutput(client, "postgres.dump", pgConfig.App, &ct.NewJob{
ReleaseID: pgConfig.Release,
Entrypoint: pgConfig.Entrypoint,
Cmd: pgConfig.Args,
Env: pgConfig.Env,
DisableLog: pgConfig.DisableLog,
}); err != nil {
return fmt.Errorf("error creating postgres dump: %s", err)
}
}
if mysqlConfig, err := getAppMysqlRunConfig(client); err == nil {
configMysqlDump(mysqlConfig)
if err := tw.WriteCommandOutput(client, "mysql.dump", mysqlConfig.App, &ct.NewJob{
ReleaseID: mysqlConfig.Release,
Entrypoint: mysqlConfig.Entrypoint,
Cmd: mysqlConfig.Args,
Env: mysqlConfig.Env,
DisableLog: mysqlConfig.DisableLog,
}); err != nil {
return fmt.Errorf("error creating mysql dump: %s", err)
}
}
return nil
}
