forked from TrueCloudLab/restic
wip
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parent
8b0092908a
commit
0758c92afc
6 changed files with 118 additions and 10 deletions
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@ -8,6 +8,7 @@ import (
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"github.com/hashicorp/hcl"
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"github.com/hashicorp/hcl/hcl/ast"
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"github.com/hashicorp/hcl/hcl/token"
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"github.com/restic/restic/internal/debug"
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"github.com/restic/restic/internal/errors"
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"github.com/spf13/pflag"
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@ -19,16 +20,28 @@ type Config struct {
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Password string `hcl:"password" env:"RESTIC_PASSWORD"`
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PasswordFile string `hcl:"password_file" flag:"password-file" env:"RESTIC_PASSWORD_FILE"`
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Backends map[string]interface{} `hcl:"backend"`
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Backends map[string]interface{}
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Backup Backup `hcl:"backup"`
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}
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// Backend configures a backend.
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type Backend struct {
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Type string `hcl:"type"`
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}
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// BackendLocal is a backend in a local directory.
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type BackendLocal struct {
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Type string `hcl:"type"`
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Path string `hcl:"path"`
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}
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// BackendSFTP is a backend stored on a server via sftp.
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type BackendSFTP struct {
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Type string `hcl:"type"`
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User string `hcl:"user"`
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Host string `hcl:"host"`
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}
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// Backup sets the options for the "backup" command.
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type Backup struct {
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Target []string `hcl:"target"`
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@ -76,11 +89,20 @@ func Parse(buf []byte) (cfg Config, err error) {
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return Config{}, err
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}
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// check for additional unknown items
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root := parsed.Node.(*ast.ObjectList)
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// load all 'backend' sections
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cfg.Backends, err = parseBackends(root)
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if err != nil {
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return Config{}, err
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}
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// check for additional unknown items
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rootTags := listTags(cfg, "hcl")
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rootTags["backend"] = struct{}{}
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checks := map[string]map[string]struct{}{
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"": listTags(cfg, "hcl"),
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"": rootTags,
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"backup": listTags(Backup{}, "hcl"),
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}
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@ -109,6 +131,88 @@ func Parse(buf []byte) (cfg Config, err error) {
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return cfg, nil
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}
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// parseBackends parses the backend configuration sections.
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func parseBackends(root *ast.ObjectList) (map[string]interface{}, error) {
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backends := make(map[string]interface{})
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// find top-level backend objects
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for _, item := range root.Items {
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// is not an object block
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if len(item.Keys) == 0 {
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continue
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}
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// does not start with an an identifier
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if item.Keys[0].Token.Type != token.IDENT {
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continue
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}
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// something other than a backend section
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if s, ok := item.Keys[0].Token.Value().(string); !ok || s != "backend" {
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continue
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}
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// missing name
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if len(item.Keys) != 2 {
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return nil, errors.Errorf("backend has no name at line %v, column %v",
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item.Pos().Line, item.Pos().Column)
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}
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// check that the name is not empty
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name := item.Keys[1].Token.Value().(string)
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if len(name) == 0 {
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return nil, errors.Errorf("backend name is empty at line %v, column %v",
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item.Pos().Line, item.Pos().Column)
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}
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// get the type of the backend by decoding it into the Backend truct
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var be Backend
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err := hcl.DecodeObject(&be, item)
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if err != nil {
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return nil, err
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}
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// then decode it into the right type
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var target interface{}
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switch be.Type {
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case "local", "":
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target = &BackendLocal{Type: "local"}
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case "sftp":
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target = &BackendSFTP{}
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default:
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return nil, errors.Errorf("backend type %q is unknown at line %v, column %v",
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be.Type, item.Pos().Line, item.Pos().Column)
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}
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err = hcl.DecodeObject(target, item)
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if err != nil {
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return nil, err
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}
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if _, ok := backends[name]; ok {
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return nil, errors.Errorf("backend %q at line %v, column %v already configured",
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name, item.Pos().Line, item.Pos().Column)
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}
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// check structure of the backend object
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innerBlock, ok := item.Val.(*ast.ObjectType)
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if !ok {
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return nil, errors.Errorf("unable to verify structure of backend %q at line %v, column %v already configured",
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name, item.Pos().Line, item.Pos().Column)
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}
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// check allowed types
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err = validateObjects(innerBlock.List, listTags(target, "hcl"))
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if err != nil {
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return nil, err
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}
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backends[name] = target
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}
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return backends, nil
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}
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// Load loads a config from a file.
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func Load(filename string) (Config, error) {
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buf, err := ioutil.ReadFile(filename)
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2
internal/ui/config/testdata/all.golden
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2
internal/ui/config/testdata/all.golden
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@ -2,7 +2,7 @@
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"Repo": "sftp:user@server:/srv/repo",
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"Password": "secret",
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"PasswordFile": "/root/secret.txt",
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"Backends": null,
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"Backends": {},
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"Backup": {
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"Target": [
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"/home/user/",
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@ -1,3 +1,5 @@
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password = "geheim"
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backend "foo" {
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type = "local"
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path = "/srv/data/repo"
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@ -1,13 +1,15 @@
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{
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"Repo": "",
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"Password": "",
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"Password": "geheim",
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"PasswordFile": "",
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"Backends": {
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"bar": {
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"Type": ""
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"Type": "local",
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"Path": "/srv/data/repo"
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},
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"foo": {
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"Type": "local"
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"Type": "local",
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"Path": "/srv/data/repo"
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}
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},
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"Backup": {
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2
internal/ui/config/testdata/backup.golden
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2
internal/ui/config/testdata/backup.golden
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@ -2,7 +2,7 @@
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"Repo": "",
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"Password": "",
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"PasswordFile": "",
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"Backends": null,
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"Backends": {},
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"Backup": {
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"Target": [
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"foo",
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@ -4,7 +4,7 @@
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"PasswordFile": "",
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"Backends": {
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"test": {
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"Backend": "local",
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"Type": "",
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"Path": "/foo/bar/baz"
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}
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},
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