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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,247 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
| "regexp" | ||
| "strings" | ||
|
|
||
| "github.com/konveyor/analyzer-lsp/provider" | ||
| "github.com/konveyor/tackle2-hub/api" | ||
| ) | ||
|
|
||
| var ( | ||
| KeyRegex = regexp.MustCompile(`(\$\()([^)]+)(\))`) | ||
| ) | ||
|
|
||
| // SelectorNotSupported used to report not supported. | ||
| type SelectorNotSupported struct { | ||
| Selector string | ||
| } | ||
|
|
||
| func (e *SelectorNotSupported) Error() (s string) { | ||
| return fmt.Sprintf("Resource selector='%s', not-supported.", e.Selector) | ||
| } | ||
|
|
||
| func (e *SelectorNotSupported) Is(err error) (matched bool) { | ||
| var inst *SelectorNotSupported | ||
| matched = errors.As(err, &inst) | ||
| return | ||
| } | ||
|
|
||
| // FieldNotMatched used to report resource field not matched. | ||
| type FieldNotMatched struct { | ||
| Kind string | ||
| Field string | ||
| } | ||
|
|
||
| func (e *FieldNotMatched) Error() (s string) { | ||
| return fmt.Sprintf("Resource injector: field=%s.%s, not-matched.", e.Kind, e.Field) | ||
| } | ||
|
|
||
| func (e *FieldNotMatched) Is(err error) (matched bool) { | ||
| var inst *FieldNotMatched | ||
| matched = errors.As(err, &inst) | ||
| return | ||
| } | ||
|
|
||
| // Field injection specification. | ||
| type Field struct { | ||
| Name string `json:"name"` | ||
| Path string `json:"path"` | ||
| Key string `json:"key"` | ||
| } | ||
|
|
||
| // Resource injection specification. | ||
| // Format: <kind>:<key>=<value> | ||
| type Resource struct { | ||
| Selector string `json:"selector"` | ||
| Fields []Field `json:"fields"` | ||
| } | ||
|
|
||
| // Metadata for provider extensions. | ||
| type Metadata struct { | ||
| Resources []Resource `json:"resources,omitempty"` | ||
| Provider provider.Config `json:"provider"` | ||
| } | ||
|
|
||
| // ParsedSelector - | ||
| type ParsedSelector struct { | ||
| ns string | ||
| kind string | ||
| name string | ||
| value string | ||
| } | ||
|
|
||
| // With parses and populates the selector. | ||
| func (p *ParsedSelector) With(s string) { | ||
| part := strings.SplitN(s, "/", 2) | ||
| if len(part) > 1 { | ||
| p.ns = part[0] | ||
| s = part[1] | ||
| } | ||
| part = strings.SplitN(s, ":", 2) | ||
| if len(part) > 1 { | ||
| p.kind = part[0] | ||
| s = part[1] | ||
| } | ||
| part = strings.SplitN(s, "=", 2) | ||
| p.name = part[0] | ||
| if len(part) > 1 { | ||
| p.value = part[1] | ||
| } | ||
| } | ||
|
|
||
| // ResourceInjector inject resources into extension metadata. | ||
| type ResourceInjector struct { | ||
| dict map[string]string | ||
| } | ||
|
|
||
| // Inject resources into extension metadata. | ||
| // Returns injected provider (settings). | ||
| func (r *ResourceInjector) Inject(extension *api.Extension) (p *provider.Config, err error) { | ||
| mp := r.asMap(extension.Metadata) | ||
| md := Metadata{} | ||
| err = r.object(mp, &md) | ||
| if err != nil { | ||
| return | ||
| } | ||
| err = r.build(&md) | ||
| if err != nil { | ||
| return | ||
| } | ||
| mp = r.asMap(&md.Provider) | ||
| mp = r.inject(mp).(map[string]any) | ||
| err = r.object(mp, &md.Provider) | ||
| if err != nil { | ||
| return | ||
| } | ||
| p = &md.Provider | ||
| return | ||
| } | ||
|
|
||
| // build builds resource dictionary. | ||
| func (r *ResourceInjector) build(md *Metadata) (err error) { | ||
| r.dict = make(map[string]string) | ||
| application, err := addon.Task.Application() | ||
| if err != nil { | ||
| return | ||
| } | ||
| for _, resource := range md.Resources { | ||
| parsed := ParsedSelector{} | ||
| parsed.With(resource.Selector) | ||
| switch strings.ToLower(parsed.kind) { | ||
| case "identity": | ||
| identity, found, nErr := addon.Application.FindIdentity(application.ID, parsed.value) | ||
| if nErr != nil { | ||
| err = nErr | ||
| return | ||
| } | ||
| if found { | ||
| err = r.add(&resource, identity) | ||
| if err != nil { | ||
| return | ||
| } | ||
| } | ||
| default: | ||
| err = &SelectorNotSupported{Selector: resource.Selector} | ||
| return | ||
| } | ||
| } | ||
| return | ||
| } | ||
|
|
||
| // add the resource fields specified in the injector. | ||
| func (r *ResourceInjector) add(resource *Resource, object any) (err error) { | ||
| mp := r.asMap(object) | ||
| for _, f := range resource.Fields { | ||
| v, found := mp[f.Name] | ||
| if !found { | ||
| err = &FieldNotMatched{ | ||
| Kind: resource.Selector, | ||
| Field: f.Name, | ||
| } | ||
| return | ||
| } | ||
| fv := r.string(v) | ||
| if f.Path != "" { | ||
| err = r.write(f.Path, fv) | ||
| if err != nil { | ||
| return | ||
| } | ||
| fv = f.Path | ||
| } | ||
| r.dict[f.Key] = fv | ||
| } | ||
| return | ||
| } | ||
|
|
||
| // write a resource field value to a file. | ||
| func (r *ResourceInjector) write(path string, s string) (err error) { | ||
| f, err := os.Create(path) | ||
| if err == nil { | ||
| _, err = f.Write([]byte(s)) | ||
| _ = f.Close() | ||
| } | ||
| return | ||
| } | ||
|
|
||
| // string returns a string representation of a field value. | ||
| func (r *ResourceInjector) string(object any) (s string) { | ||
| if object != nil { | ||
| s = fmt.Sprintf("%v", object) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| // objectMap returns a map for a resource object. | ||
| func (r *ResourceInjector) asMap(object any) (mp map[string]any) { | ||
| b, _ := json.Marshal(object) | ||
| mp = make(map[string]any) | ||
| _ = json.Unmarshal(b, &mp) | ||
| return | ||
| } | ||
|
|
||
| // objectMap returns a map for a resource object. | ||
| func (r *ResourceInjector) object(mp map[string]any, object any) (err error) { | ||
| b, _ := json.Marshal(mp) | ||
| err = json.Unmarshal(b, object) | ||
| return | ||
| } | ||
|
|
||
| // inject replaces `dict` variables referenced in metadata. | ||
| func (r *ResourceInjector) inject(in any) (out any) { | ||
| switch node := in.(type) { | ||
| case map[string]any: | ||
| for k, v := range node { | ||
| node[k] = r.inject(v) | ||
| } | ||
| out = node | ||
| case []any: | ||
| var injected []any | ||
| for _, n := range node { | ||
| injected = append( | ||
| injected, | ||
| r.inject(n)) | ||
| } | ||
| out = injected | ||
| case string: | ||
| for { | ||
| match := KeyRegex.FindStringSubmatch(node) | ||
| if len(match) < 3 { | ||
| break | ||
| } | ||
| node = strings.Replace( | ||
| node, | ||
| match[0], | ||
| r.dict[match[2]], | ||
| -1) | ||
| } | ||
| out = node | ||
| default: | ||
| out = node | ||
| } | ||
| return | ||
| } |
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