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openshift.go
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openshift.go
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package graph
import (
"bytes"
"encoding/json"
"io/ioutil"
"os"
"os/exec"
"path"
)
var (
openshiftDefaultExcludes = []string{
"github.com/openshift/origin/images",
"github.com/openshift/origin/pkg/build/builder",
}
openshiftImportPath = "github.com/openshift/origin"
)
type openShiftRepoInfo struct {
Dir string
}
// getOpenShiftExcludes returns a list of known
// OpenShift-specific paths to exclude
func getOpenShiftExcludes() []string {
return openshiftDefaultExcludes
}
// getOpenShiftFilters returns a list of known
// OpenShift-specific paths to use as filters
func getOpenShiftFilters() ([]string, error) {
result := bytes.NewBuffer([]byte{})
// obtain path to Origin repo
goList := exec.Command("go", "list", "--json", "-f", "'{{ .Dir }}'", openshiftImportPath)
goList.Stdout = result
goList.Stderr = os.Stderr
if err := goList.Run(); err != nil {
return nil, err
}
info := &openShiftRepoInfo{}
if err := json.Unmarshal(result.Bytes(), &info); err != nil {
return nil, err
}
filters, err := listDirsN([]string{"pkg"}, 1, info.Dir, "")
if err != nil {
return nil, err
}
k8s, err := listDirsN([]string{"vendor/k8s.io"}, 1, info.Dir, "")
if err != nil {
return nil, err
}
filters = append(filters, k8s...)
gopkg, err := listDirsN([]string{"vendor/gopkg.in"}, 1, info.Dir, "")
if err != nil {
return nil, err
}
filters = append(filters, gopkg...)
github, err := listDirsN([]string{"vendor/github.com"}, 2, info.Dir, "")
if err != nil {
return nil, err
}
filters = append(filters, github...)
vendor, err := listDirsN([]string{"vendor"}, 1, info.Dir, "")
if err != nil {
return nil, err
}
// filter out vendor pkgs we have expanded
skip := map[string]bool{
"vendor/k8s.io": true,
"vendor/gopkg.in": true,
"vendor/github.com": true,
}
for _, v := range vendor {
if _, shouldSkip := skip[v]; shouldSkip {
continue
}
filters = append(filters, v)
}
originFilters := []string{}
for _, f := range filters {
originFilters = append(originFilters, path.Join(openshiftImportPath, f))
}
return originFilters, nil
}
// listDirsN receives a list of directory names and returns
// up to N levels of nested directories for each one
func listDirsN(dirs []string, N int, root, prefix string) ([]string, error) {
if N <= 0 {
return dirs, nil
}
allDirs := []string{}
for _, dir := range dirs {
files, err := ioutil.ReadDir(path.Join(root, prefix, dir))
if err != nil {
return nil, err
}
childDirs := []string{}
for _, f := range files {
if !f.IsDir() {
continue
}
childDirs = append(childDirs, f.Name())
}
nested, err := listDirsN(childDirs, N-1, root, path.Join(prefix, dir))
if err != nil {
return nil, err
}
for _, n := range nested {
allDirs = append(allDirs, path.Join(dir, n))
}
}
return allDirs, nil
}