func (C *CMD) execute() (code int, err error) {
c := exec.Command(C.Name, C.Args...)
c.Stdout = C.Stdout
c.Stderr = C.Stderr
c.Env = os.Environ()
if C.EchoStdout {
c.Stdout = io.MultiWriter(os.Stdout, c.Stdout)
}
if C.EchoStderr {
c.Stderr = io.MultiWriter(os.Stderr, c.Stderr)
}
if C.WriteStdout != nil {
c.Stdout = io.MultiWriter(C.WriteStdout, c.Stdout)
}
if C.WriteStderr != nil {
c.Stderr = io.MultiWriter(C.WriteStderr, c.Stderr)
}
if C.EchoStdout || C.EchoStderr {
cli.Logf("shell> %s", C)
}
if err := c.Start(); err != nil {
cli.Fatalf("Unable to begin command execution; %s", err)
}
err = c.Wait()
if err != nil {
if exiterr, ok := err.(*exec.ExitError); ok {
if status, ok := exiterr.Sys().(syscall.WaitStatus); ok {
return status.ExitStatus(), err
}
}
cli.Fatalf("Command failed, unable to get exit code: %s", C)
}
return 0, nil
}
func (s *Sous) AssembleTargetContext(targetName string) (Target, *Context) {
packs := s.Packs
p := DetectProjectType(packs)
if p == nil {
cli.Fatalf("no buildable project detected")
}
pack := CompiledPack{Pack: p}
target, ok := pack.GetTarget(targetName)
if !ok {
cli.Fatalf("The %s build pack does not support %s", pack, targetName)
}
if fatal := CheckForProblems(pack.Pack); fatal {
cli.Fatal()
}
context := GetContext(targetName)
err := target.Check()
if err != nil {
cli.Fatalf("unable to %s %s project: %s", targetName, pack, err)
}
// If the pack specifies a version, check it matches the tagged version
packAppVersion := strings.Split(pack.AppVersion(), "+")[0]
if packAppVersion != "" {
pv := version.Version(packAppVersion)
gv := version.Version(context.BuildVersion.MajorMinorPatch)
if !pv.Version.LimitedEqual(gv.Version) {
cli.Warn("using latest git tagged version %s; your code reports version %s, which is ignored", gv, pv)
}
}
return target, context
}
func Contracts(sous *core.Sous, args []string) {
contractsFlags.Parse(args)
args = contractsFlags.Args()
timeout := *timeoutFlag
targetName := "app"
if len(args) != 0 {
targetName = args[0]
}
core.RequireGit()
core.RequireDocker()
if *dockerImage != "" {
cli.Fatalf("-image flag not yet implemented")
}
target, context := sous.AssembleTargetContext(targetName)
sous.RunTarget(target, context)
cli.Logf("=> Running Contracts")
cli.Logf(`=> **TIP:** Open another terminal in this directory and type **sous logs -f**`)
taskHost := core.DivineTaskHost()
port0, err := ports.GetFreePort()
if err != nil {
cli.Fatalf("Unable to get free port: %s", err)
}
dr := docker.NewRun(context.DockerTag())
dr.AddEnv("PORT0", strconv.Itoa(port0))
dr.AddEnv("TASK_HOST", taskHost)
dr.StdoutFile = context.FilePath("stdout")
dr.StderrFile = context.FilePath("stderr")
container, err := dr.Background().Start()
if err != nil {
cli.Fatalf("Unable to start container: %s", err)
}
cli.AddCleanupTask(func() error {
return container.KillIfRunning()
})
failed := 0
for _, c := range theContracts {
cli.Logf(`===> CHECKING CONTRACT: "%s"`, c.Name)
cli.Logf(`===> Description: %s`, c.Desc(dr))
if c.Tips != nil {
cli.Logf("===> **TIPS for this contract:**")
cli.LogBulletList(" -", c.Tips(dr))
}
failed += within(timeout, func() bool {
return c.Premise(dr)
})
}
if failed != 0 {
cli.Fatalf("%d contracts failed.", failed)
}
cli.Success()
}
func Stamp(sous *core.Sous, args []string) {
target := "app"
if len(args) == 0 {
cli.Fatalf("sous stamp requires at least one argument (a docker label)")
}
_, context := sous.AssembleTargetContext(target)
if context.BuildNumber() == 0 {
cli.Fatalf("no builds yet; sous stamp operates on your last successful build of the app target")
}
tag := context.DockerTag()
run := docker.NewRun(tag)
run.AddLabels(parseLabels(args))
run.StdoutFile = "/dev/null"
run.StderrFile = "/dev/null"
container, err := run.Background().Start()
if err != nil {
cli.Fatalf("Failed to start container for labeling: %s", err)
}
if err := container.KillIfRunning(); err != nil {
cli.Fatalf("Failed to kill labelling container %s: %s", container, err)
}
cid := container.CID()
if err := docker.Commit(cid, tag); err != nil {
cli.Fatalf("Failed to commit labelled container %s: %s", container, err)
}
cli.Successf("Successfully added labels to %s; remember to push.", tag)
}
func main() {
if len(os.Args) < 2 {
usage()
}
sousFlags, args := parseFlags(os.Args[2:])
command := os.Args[1]
var cfg *config.Config
var sous *core.Sous
if command != "config" {
updateHourly()
cfg = config.Load()
trapSignals()
defer cli.Cleanup()
sous = core.NewSous(Version, Revision, OS, Arch, loadCommands(), BuildPacks(cfg), sousFlags, cfg)
} else {
sous = core.NewSous(Version, Revision, OS, Arch, loadCommands(), nil, sousFlags, nil)
}
c, ok := sous.Commands[command]
if !ok {
cli.Fatalf("Command %s not recognised; try `sous help`", command)
}
// It is the responsibility of the command to exit with an appropriate
// error code...
c.Func(sous, args)
// If it does not, we assume it failed...
cli.Fatalf("Command did not complete correctly")
}
func (c *CMD) JSON(v interface{}) {
o := c.Out()
if err := json.Unmarshal([]byte(o), &v); err != nil {
cli.Fatalf("Unable to parse JSON from %s as %T: %s", c, v, err)
}
if v == nil {
cli.Fatalf("Unmarshalled nil")
}
}
func RequireVersion(r *version.R) {
if c := cmd.ExitCode("git", "--version"); c != 0 {
cli.Fatalf("git required")
}
v := version.Version(cmd.Table("git", "--version")[0][2])
if !r.IsSatisfiedBy(v) {
cli.Fatalf("you have git version %s; want %s", v, r.Original)
}
}
func (c *container) Image() string {
var dc []DockerContainer
cmd.JSON(&dc, "docker", "inspect", c.Name())
if len(dc) == 0 {
cli.Fatalf("Container %s does not exist.", c)
}
if len(dc) != 1 {
cli.Fatalf("Multiple containers match %s", c)
}
return dc[0].Image
}
func ImageID(image string) string {
var i []Image
cmd.JSON(&i, "docker", "inspect", image)
if len(i) == 0 {
cli.Fatalf("image missing after pull: %s", image)
}
if len(i) != 1 {
cli.Fatalf("multiple images match %s; ensure sous is using unique tags", image)
}
return i[0].ID
}
func (ts Targets) Add(target Target) {
n := target.Name()
if _, ok := ts[n]; ok {
cli.Fatalf("target %s already added", n)
}
_, ok := knownTargets[n]
if !ok {
cli.Fatalf("target %s is not known", n)
}
ts[n] = target
}
func getLabelsFromImage(imageTag string) map[string]string {
var images []*Image
cmd.JSON(&images, "docker", "inspect", imageTag)
if len(images) == 0 {
cli.Fatalf("cannot find image %s", imageTag)
}
if len(images) > 1 {
cli.Fatalf("multiple images named %s, cannot continue", imageTag)
}
image := images[0]
return image.Config.Labels
}
func (t *AppTarget) PreDockerBuild(c *core.Context) {
if t.artifactPath == "" {
cli.Fatalf("Artifact path not set by compile target.")
}
if !file.Exists(t.artifactPath) {
cli.Fatalf("Artifact not at %s", t.artifactPath)
}
filename := path.Base(t.artifactPath)
localArtifact := filename
file.TemporaryLink(t.artifactPath, "./"+localArtifact)
t.artifactPath = localArtifact
}
func Load() *Config {
if c == nil {
if !file.ReadJSON(&c, "~/.sous/config") {
if err := Update(); err != nil {
cli.Fatalf("Unable to load config: %s", err)
}
if !file.ReadJSON(&c, "~/.sous/config") {
cli.Fatalf("Unable to read %s", "~/.sous/config")
}
}
}
return c
}
func ReadJSON(v interface{}, pathFormat string, a ...interface{}) bool {
b, exists, path := Read(pathFormat, a...)
if !exists {
return false
}
if err := json.Unmarshal(b, &v); err != nil {
cli.Fatalf("Unable to parse JSON in %s as %T: %s", path, v, err)
}
if v == nil {
cli.Fatalf("Unmarshalled nil")
}
return true
}
func (t *AppTarget) SetState(fromTarget string, state interface{}) {
if fromTarget != "compile" {
return
}
m, ok := state.(map[string]string)
if !ok {
cli.Fatalf("app target got a %T from compile target, expected map[string]string", state)
}
artifactPath, ok := m["artifactPath"]
if !ok {
cli.Fatalf("app target got %+v from compile target; expected key 'artifactPath'", m)
}
t.artifactPath = artifactPath
}
func Config(sous *core.Sous, args []string) {
if len(args) == 0 || len(args) > 2 {
cli.Fatalf("usage: sous config <key> [<new-value>]")
}
if len(args) == 1 {
if v, ok := config.Properties()[args[0]]; ok {
cli.Outf(v)
cli.Success()
}
cli.Fatalf("Key %s not found", args[0])
}
config.Set(args[0], args[1])
cli.Logf("Successfully set %s to %s", args[0], args[1])
cli.Success()
}
func IndexIsDirty() bool {
code := cmd.ExitCode("git", "diff-index", "--quiet", "HEAD")
if code > 1 || code < 0 {
cli.Fatalf("Unable to determine if git index is dirty; Got exit code %d; want 0-1")
}
return code == 1
}
func getOriginURL() *url.URL {
table := cmd.Table("git", "remote", "-v")
if len(table) == 0 {
cli.Fatalf("no git remotes set up")
}
for _, row := range table {
if row[0] == "origin" {
u, err := url.Parse(row[1])
if err != nil {
cli.Fatalf("unable to parse origin (%s) as URL; %s", row[1], err)
}
return u
}
}
return nil
}
func Ls(sous *core.Sous, args []string) {
//globalFlag := lsFlags.Bool("g", false, "global: list files in all projects sous has built")
//lsFlags.Parse(args)
//global := *globalFlag
args = lsFlags.Args()
if len(args) != 0 {
cli.Fatalf("sous ls does not accept any arguments")
}
_, context := sous.AssembleTargetContext("app")
cli.Outf(" ===> Images")
images := sous.LsImages(context)
if len(images) == 0 {
cli.Logf(" no images for this project")
}
for _, image := range images {
cli.Logf(" %s:%s", image.Name, image.Tag)
}
cli.Outf(" ===> Containers")
containers := sous.LsContainers(context)
if len(containers) == 0 {
cli.Logf(" no containers for this project")
}
for _, container := range containers {
cli.Logf(" %s (%s)", container.Name(), container.CID())
}
cli.Success()
}
func WriteJSON(data interface{}, pathFormat string, a ...interface{}) {
b, err := json.MarshalIndent(data, "", "\t")
if err != nil {
cli.Fatalf("Unable to marshal %T object to JSON: %s", data, err)
}
Write(b, pathFormat, a...)
}
func Find(glob string) []string {
files, err := filepath.Glob(glob)
if err != nil {
cli.Fatalf("Unable to search for files matching %s; %s", glob, err)
}
return files
}
func Create(path string) *os.File {
f, err := os.Create(path)
if err != nil {
cli.Fatalf("Unable to write to file: %s", err)
}
return f
}
func RequireDaemon() {
if c := cmd.ExitCode("docker", "ps"); c != 0 {
cli.Logf("`docker ps` exited with code %d", c)
if dockermachine.Installed() {
vms := dockermachine.RunningVMs()
if len(vms) != 0 {
cli.Fatalf(`Tip: eval "$(docker-machine env %s)"`, vms[0])
}
vms = dockermachine.VMs()
switch len(vms) {
case 0:
cli.Logf("Tip: you should create a machine using docker-machine")
case 1:
start := ""
if cmd.Stdout("docker-machine", "status", vms[0]) != "Running" {
start = fmt.Sprintf("docker-machine start %s && ", vms[0])
}
cli.Logf(`Tip: %seval "$(docker-machine env %s)"`, start, vms[0])
default:
cli.Logf("Tip: start one of your docker machines (%s)",
strings.Join(vms, ", "))
}
}
cli.Fatal()
}
}
// BuildFile builds the specified docker file in the context of the specified
// directory.
func BuildFile(dockerfile, dir, tag string) string {
if !file.Exists(dockerfile) {
cli.Fatalf("File does not exist: %s", dockerfile)
}
dir = path.Resolve(dir)
localDockerfile := ".SousDockerfile"
if file.Exists(localDockerfile) {
file.Remove(localDockerfile)
}
file.RemoveOnExit(localDockerfile)
// If there is a .gitignore, but no .dockerignore, link it as .dockerignore
if file.Exists(".gitignore") {
if file.Exists(".dockerignore") {
cli.Warn("./.dockerignore found, it is recommended to remove this so Sous can use your .gitignore")
} else {
file.TemporaryLink(".gitignore", ".dockerignore")
// We try to clean this file up early, in preperation for the next build step
defer file.Remove(".dockerignore")
}
}
file.TemporaryLink(dockerfile, localDockerfile)
// We try to clean the local Dockerfile up early, in preperation for the next build step
defer file.Remove(localDockerfile)
return dockerCmd("build", "-f", localDockerfile, "-t", tag, dir).Out()
}
func Version(s string) *V {
v, err := NewVersion(s)
if err != nil {
cli.Fatalf("unable to parse version string '%s'; %s", s, err)
}
return v
}
func (p *Pack) dockerFrom(nodeVersion, target string) string {
if tag, ok := p.Config.AvailableVersions.GetBaseImageTag(nodeVersion, target); ok {
return tag
}
cli.Fatalf("No base image available for NodeJS %s, target: %s", nodeVersion, target)
return ""
}
func TemporaryLink(path, newPath string) {
if Exists(newPath) {
cli.Fatalf("Unable to link file to %s, it already exists", newPath)
}
RemoveOnExit(newPath)
Link(path, newPath)
}
func (c *CMD) Out() string {
out, err := c.OutErr()
if err != nil {
cli.Fatalf("Error running %s; %s", c, err)
}
return out
}
func Write(data []byte, pathFormat string, a ...interface{}) {
p := path.Resolve(pathFormat, a...)
dir.EnsureExists(path.BaseDir(p))
err := ioutil.WriteFile(p, data, 0777)
if err != nil {
cli.Fatalf("unable to write file %s; %s", p, err)
}
}
func (c *Context) TemporaryLinkResource(name string) {
fileContents, ok := resources.Files[name]
if !ok {
cli.Fatalf("Cannot find resource %s, ensure go generate succeeded", name)
}
c.SaveFile(fileContents, name)
file.TemporaryLink(c.FilePath(name), name)
}
