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Merge pull request #139 from choria-io/137
(#137) adds a scaffold command
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| // Copyright (c) 2023, R.I. Pienaar and the Choria Project contributors | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| package scaffold | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/choria-io/appbuilder/builder" | ||
| "github.com/choria-io/appbuilder/scaffold" | ||
| "github.com/choria-io/fisk" | ||
| ) | ||
|
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| type Command struct { | ||
| Target string `json:"target"` | ||
| SourceDirectory string `json:"source_directory"` | ||
| Source map[string]any `json:"source"` | ||
| Post []map[string]string `json:"post"` | ||
|
|
||
| builder.GenericSubCommands | ||
| builder.GenericCommand | ||
| } | ||
|
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| type Scaffold struct { | ||
| defnDir string | ||
| userDir string | ||
| arguments map[string]any | ||
| flags map[string]any | ||
| cmd *fisk.CmdClause | ||
| def *Command | ||
| ctx context.Context | ||
| log builder.Logger | ||
| b *builder.AppBuilder | ||
| } | ||
|
|
||
| var ( | ||
| ErrorInvalidConfiguration = errors.New("invalid configuration") | ||
| ErrRenderFailed = errors.New("render failed") | ||
| ) | ||
|
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| func Register() error { | ||
| return builder.RegisterCommand("scaffold", NewScaffoldCommand) | ||
| } | ||
|
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| func MustRegister() { | ||
| builder.MustRegisterCommand("scaffold", NewScaffoldCommand) | ||
| } | ||
|
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| func NewScaffoldCommand(b *builder.AppBuilder, j json.RawMessage, log builder.Logger) (builder.Command, error) { | ||
| s := &Scaffold{ | ||
| def: &Command{}, | ||
| ctx: b.Context(), | ||
| defnDir: b.DefinitionDirectory(), | ||
| userDir: b.UserWorkingDirectory(), | ||
| b: b, | ||
| log: log, | ||
| arguments: map[string]any{}, | ||
| flags: map[string]any{}, | ||
| } | ||
|
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| err := json.Unmarshal(j, s.def) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%w: %v", builder.ErrInvalidDefinition, err) | ||
| } | ||
|
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| return s, nil | ||
| } | ||
|
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| func (r *Scaffold) String() string { return fmt.Sprintf("%s (scaffold)", r.def.Name) } | ||
|
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| func (r *Scaffold) Validate(log builder.Logger) error { | ||
| if r.def.Type != "scaffold" { | ||
| return fmt.Errorf("not an scaffold command") | ||
| } | ||
|
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| var errs []string | ||
|
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| if r.def.Target == "" { | ||
| errs = append(errs, "target is required") | ||
| } | ||
|
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| if len(r.def.Source) == 0 && r.def.SourceDirectory == "" { | ||
| errs = append(errs, "no sources provided") | ||
| } | ||
|
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| if r.def.SourceDirectory != "" { | ||
| _, err := os.Stat(r.def.SourceDirectory) | ||
| if err != nil { | ||
| errs = append(errs, fmt.Sprintf("cannot read source directory: %v", err)) | ||
| } | ||
| } | ||
|
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| if _, err := os.Stat(r.def.Target); !os.IsNotExist(err) { | ||
| errs = append(errs, "target directory exist") | ||
| } | ||
|
|
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| if len(errs) > 0 { | ||
| return errors.New(strings.Join(errs, ", ")) | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func (r *Scaffold) SubCommands() []json.RawMessage { | ||
| return r.def.Commands | ||
| } | ||
|
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| func (r *Scaffold) CreateCommand(app builder.KingpinCommand) (*fisk.CmdClause, error) { | ||
| r.cmd = builder.CreateGenericCommand(app, &r.def.GenericCommand, r.arguments, r.flags, r.b, r.runCommand) | ||
|
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| return r.cmd, nil | ||
| } | ||
|
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| func (r *Scaffold) runCommand(_ *fisk.ParseContext) error { | ||
| cfg := scaffold.Config{ | ||
| Source: r.def.Source, | ||
| Post: r.def.Post, | ||
| } | ||
|
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| var err error | ||
|
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| if cfg.SourceDirectory != "" { | ||
| cfg.SourceDirectory, err = builder.ParseStateTemplate(r.def.SourceDirectory, r.arguments, r.flags, r.b.Configuration()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
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| cfg.TargetDirectory, err = builder.ParseStateTemplate(r.def.Target, r.arguments, r.flags, r.b.Configuration()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| s, err := scaffold.New(cfg, builder.TemplateFuncs(true)) | ||
| if err != nil { | ||
| return fmt.Errorf("%w: %w", ErrorInvalidConfiguration, err) | ||
| } | ||
|
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| s.Logger(builder.NewDefaultLogger()) | ||
|
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| err = s.Render(builder.NewTemplateState(r.arguments, r.flags, r.b.Configuration(), nil)) | ||
| if err != nil { | ||
| return fmt.Errorf("%w: %w", ErrRenderFailed, err) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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