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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| "github.com/jessevdk/go-flags" | ||
| "gopkg.in/yaml.v3" | ||
|
|
||
| "github.com/canonical/chisel/internal/setup" | ||
| ) | ||
|
|
||
| var shortInfoHelp = "Show information about package slices" | ||
| var longInfoHelp = ` | ||
| The info command shows detailed information about package slices. | ||
| It accepts a whitespace-separated list of strings. The list can be | ||
| composed of package names, slice names, or a combination of both. The | ||
| default output format is YAML. When multiple arguments are provided, | ||
| the output is a list of YAML documents separated by a "---" line. | ||
| Slice definitions are shown verbatim according to their definition in | ||
| the selected release. For example, globs are not expanded. | ||
| ` | ||
|
|
||
| var infoDescs = map[string]string{ | ||
| "release": "Chisel release name or directory (e.g. ubuntu-22.04)", | ||
| } | ||
|
|
||
| type infoCmd struct { | ||
| Release string `long:"release" value-name:"<branch|dir>"` | ||
|
|
||
| Positional struct { | ||
| Queries []string `positional-arg-name:"<pkg|slice>" required:"yes"` | ||
| } `positional-args:"yes"` | ||
| } | ||
|
|
||
| func init() { | ||
| addCommand("info", shortInfoHelp, longInfoHelp, func() flags.Commander { return &infoCmd{} }, infoDescs, nil) | ||
| } | ||
|
|
||
| func (cmd *infoCmd) Execute(args []string) error { | ||
| if len(args) > 0 { | ||
| return ErrExtraArgs | ||
| } | ||
|
|
||
| release, err := obtainRelease(cmd.Release) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| packages, notFound := selectPackageSlices(release, cmd.Positional.Queries) | ||
|
|
||
| for i, pkg := range packages { | ||
| data, err := yaml.Marshal(pkg) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if i > 0 { | ||
| fmt.Fprintln(Stdout, "---") | ||
| } | ||
| fmt.Fprint(Stdout, string(data)) | ||
| } | ||
|
|
||
| if len(notFound) > 0 { | ||
| for i := range notFound { | ||
| notFound[i] = strconv.Quote(notFound[i]) | ||
| } | ||
| return fmt.Errorf("no slice definitions found for: " + strings.Join(notFound, ", ")) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // selectPackageSlices takes in a release and a list of query strings | ||
| // of package names and/or slice names, and returns a list of packages | ||
| // containing the found slices. It also returns a list of query | ||
| // strings that were not found. | ||
| func selectPackageSlices(release *setup.Release, queries []string) (packages []*setup.Package, notFound []string) { | ||
| var pkgOrder []string | ||
| pkgSlices := make(map[string][]string) | ||
| allPkgSlices := make(map[string]bool) | ||
|
|
||
| sliceExists := func(key setup.SliceKey) bool { | ||
| pkg, ok := release.Packages[key.Package] | ||
| if !ok { | ||
| return false | ||
| } | ||
| _, ok = pkg.Slices[key.Slice] | ||
| return ok | ||
| } | ||
| for _, query := range queries { | ||
| var pkg, slice string | ||
| if strings.Contains(query, "_") { | ||
| key, err := setup.ParseSliceKey(query) | ||
| if err != nil || !sliceExists(key) { | ||
| notFound = append(notFound, query) | ||
| continue | ||
| } | ||
| pkg, slice = key.Package, key.Slice | ||
| } else { | ||
| if _, ok := release.Packages[query]; !ok { | ||
| notFound = append(notFound, query) | ||
| continue | ||
| } | ||
| pkg = query | ||
| } | ||
| if len(pkgSlices[pkg]) == 0 && !allPkgSlices[pkg] { | ||
| pkgOrder = append(pkgOrder, pkg) | ||
| } | ||
| if slice == "" { | ||
| allPkgSlices[pkg] = true | ||
| } else { | ||
| pkgSlices[pkg] = append(pkgSlices[pkg], slice) | ||
| } | ||
| } | ||
|
|
||
| for _, pkgName := range pkgOrder { | ||
| var pkg *setup.Package | ||
| if allPkgSlices[pkgName] { | ||
| pkg = release.Packages[pkgName] | ||
| } else { | ||
| releasePkg := release.Packages[pkgName] | ||
| pkg = &setup.Package{ | ||
| Name: releasePkg.Name, | ||
| Archive: releasePkg.Archive, | ||
| Slices: make(map[string]*setup.Slice), | ||
| } | ||
| for _, sliceName := range pkgSlices[pkgName] { | ||
| pkg.Slices[sliceName] = releasePkg.Slices[sliceName] | ||
| } | ||
| } | ||
| packages = append(packages, pkg) | ||
| } | ||
| return packages, notFound | ||
| } |
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