func doInstall(c *cli.Context) {
home := os.Getenv("HOME")
packageName := c.Args().First()
packageFile := ""
if _, err := os.Stat(packageName); err == nil {
fmt.Println("Install from a local package")
pwd, err := os.Getwd()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
packageFile = filepath.Join(home, "/.dpm/cache/", packageName)
err = cp(filepath.Join(pwd, packageName), packageFile)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
err = generateIndex(filepath.Join(home, "/.dpm/cache/"),
filepath.Join(home, "/.dpm/index/"))
if err != nil {
fmt.Println(err)
os.Exit(1)
}
} else {
fmt.Println("Install from a remote repository")
_, err = repo.Get(packageName, "")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
}
if packageFile != "" {
p, err := build.LoadPackage(packageFile)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
p.Extract(filepath.Join(home, "/.dpm/workspace", p.Sha256()))
}
}
func install(c *cli.Context) {
home := os.Getenv("HOME")
packageName := c.Args().First()
entry, err := repo.Get(packageName, "")
if err != nil {
fmt.Println("Cannot find package in the index")
os.Exit(1)
}
packageFile := filepath.Join(home, ".dpm", "cache", entry.Filename)
_, err = os.Stat(packageFile)
if err != nil {
// not existed
doInstall(c)
}
p, err := build.LoadPackage(packageFile)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
// extract the package
// it will extract all dependencies in process
_, err = os.Stat(filepath.Join(home, ".dpm", "workspace", entry.Hash))
if err != nil {
err = p.Extract(filepath.Join(home, ".dpm", "workspace", entry.Hash))
if err != nil {
fmt.Println(err)
os.Exit(1)
}
}
hashes, err := p.Order()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println("Dependencies resolved...")
var em provision.ExportedMachine
for _, hash := range hashes {
packageSpec, err := build.ReadSpec(hash)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Printf("Installing %s:%s (%s)...\n", packageSpec.Name, packageSpec.Version, hash[0:8])
provisionFile := filepath.Join(home, ".dpm", "workspace", hash, packageSpec.Provision)
provSpec, err := provision.LoadFromFile(provisionFile)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
times := 0
loop:
err = provSpec.Provision()
if err != nil {
fmt.Println(err)
times++
if times < 10 {
goto loop
}
os.Exit(1)
}
err = provSpec.ExportEnvsToFile(filepath.Join(home, ".dpm", "workspace", hash, ".env"))
if err != nil {
fmt.Println(err)
os.Exit(1)
}
em = provSpec.ExportedMachine()
compose, err := composition.NewProject(em, hash, packageSpec)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
err = compose.Up()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
}
flag := ""
mode := "engine"
if em.Mode == provision.Swarm {
flag = "--swarm "
mode = "cluster"
}
fmt.Printf("\nExported machine is %s.\n", em.Name)
fmt.Printf("Run \"docker-machine env %s%s\" to see how to connect to your Docker %s.\n", flag, em.Name, mode)
}
func BuildPackage(dir string) (*Package, error) {
home := os.Getenv("HOME")
buf := new(bytes.Buffer)
tarfile := new(archivex.TarFile)
tarfile.Writer = tar.NewWriter(buf)
specContent, err := ioutil.ReadFile(filepath.Join(dir, "SPEC.yml"))
root := Root{}
err = yaml.Unmarshal(specContent, &root)
if err != nil {
return nil, err
}
spec := root.Spec
tarfile.AddFileWithName(filepath.Join(dir, "SPEC.yml"), "SPEC.yml")
tarfile.AddFileWithName(filepath.Join(dir, spec.Provision), spec.Provision)
tarfile.AddFileWithName(filepath.Join(dir, spec.Composition), spec.Composition)
for _, d := range spec.Dirs {
tarfile.AddAll(filepath.Join(dir, d), true)
}
hashes := []string{}
graph := make(DepGraph)
// resolve dependencies on build
// to gaurantee that the package will have
// the same behaviour everytime we deploy it
for name, attributes := range spec.Dependencies {
attrs, err := parse(attributes)
if err != nil {
return nil, err
}
entry, err := repo.Get(name, attrs["version"])
if err != nil {
return nil, err
}
p, err := LoadPackage(filepath.Join(home, ".dpm", "cache", entry.Filename))
if err != nil {
return nil, err
}
err = p.ExtractIfNotExist()
if err != nil {
return nil, err
}
hashes = append(hashes, entry.Hash)
deps, err := p.Deps()
if err != nil {
return nil, err
}
graph = merge(graph, deps)
}
// add entry of this package before save to DEPS
graph["this"] = hashes
depsContent, err := yaml.Marshal(graph)
if err != nil {
return nil, err
}
tarfile.Add("DEPS", depsContent)
order, cyclic := toposort(graph)
if len(cyclic) != 0 {
return nil, fmt.Errorf("Dependency cyclic detected")
}
for _, h := range order {
if h == "this" {
continue
}
tarfile.AddAll(filepath.Join(home, ".dpm", "workspace", h), true)
}
tarfile.Close()
return &Package{buf.Bytes()}, nil
}