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Original file line number | Diff line number | Diff line change |
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package cmd | ||
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import ( | ||
"errors" | ||
"fmt" | ||
"io" | ||
"os" | ||
"path/filepath" | ||
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"github.com/spf13/cobra" | ||
"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1" | ||
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"github.com/Skarlso/crd-to-sample-yaml/pkg" | ||
) | ||
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const ( | ||
FormatHTML = "html" | ||
FormatYAML = "yaml" | ||
) | ||
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// crdCmd is the command that generates CRD output. | ||
var crdCmd = &cobra.Command{ | ||
Use: "crd", | ||
Short: "Simply generate a CRD output.", | ||
RunE: runGenerate, | ||
} | ||
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type Handler interface { | ||
CRDs() ([]*v1beta1.CustomResourceDefinition, error) | ||
} | ||
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func init() { | ||
generateCmd.AddCommand(crdCmd) | ||
} | ||
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func runGenerate(_ *cobra.Command, _ []string) error { | ||
crdHandler, err := constructHandler(args) | ||
if err != nil { | ||
return err | ||
} | ||
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if args.format == FormatHTML { | ||
if err := pkg.LoadTemplates(); err != nil { | ||
return fmt.Errorf("failed to load templates: %w", err) | ||
} | ||
} | ||
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// determine location of output | ||
if args.output == "" { | ||
loc, err := os.Executable() | ||
if err != nil { | ||
return fmt.Errorf("failed to determine executable location: %w", err) | ||
} | ||
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args.output = filepath.Dir(loc) | ||
} | ||
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crds, err := crdHandler.CRDs() | ||
if err != nil { | ||
return fmt.Errorf("failed to load CRDs: %w", err) | ||
} | ||
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var w io.WriteCloser | ||
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if args.format == FormatHTML { | ||
if args.stdOut { | ||
w = os.Stdout | ||
} else { | ||
w, err = os.Create(args.output) | ||
if err != nil { | ||
return fmt.Errorf("failed to create output file: %w", err) | ||
} | ||
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defer w.Close() | ||
} | ||
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return pkg.RenderContent(w, crds, args.comments, args.minimal) | ||
} | ||
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var errs []error //nolint:prealloc // nope | ||
for _, crd := range crds { | ||
if args.stdOut { | ||
w = os.Stdout | ||
} else { | ||
outputLocation := filepath.Join(args.output, crd.Name+"_sample."+args.format) | ||
// closed later during render | ||
outputFile, err := os.Create(outputLocation) | ||
if err != nil { | ||
errs = append(errs, fmt.Errorf("failed to create file at: '%s': %w", outputLocation, err)) | ||
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continue | ||
} | ||
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w = outputFile | ||
} | ||
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errs = append(errs, pkg.Generate(crd, w, args.comments, args.minimal, args.skipRandom)) | ||
} | ||
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return errors.Join(errs...) | ||
} | ||
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func constructHandler(args *rootArgs) (Handler, error) { | ||
var crdHandler Handler | ||
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switch { | ||
case args.fileLocation != "": | ||
crdHandler = &FileHandler{location: args.fileLocation} | ||
case args.folderLocation != "": | ||
crdHandler = &FolderHandler{location: args.folderLocation} | ||
case args.url != "": | ||
crdHandler = &URLHandler{ | ||
url: args.url, | ||
username: args.username, | ||
password: args.password, | ||
token: args.token, | ||
} | ||
} | ||
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if crdHandler == nil { | ||
return nil, errors.New("one of the flags (file, folder, url) must be set") | ||
} | ||
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return crdHandler, nil | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,64 @@ | ||
package cmd | ||
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import ( | ||
"fmt" | ||
"os" | ||
"path/filepath" | ||
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"github.com/spf13/cobra" | ||
"k8s.io/apimachinery/pkg/util/json" | ||
) | ||
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// schemaCmd is a command that can generate json schemas. | ||
var schemaCmd = &cobra.Command{ | ||
Use: "schema", | ||
Short: "Simply generate a JSON schema from the CRD.", | ||
RunE: runGenerateSchema, | ||
} | ||
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func runGenerateSchema(cmd *cobra.Command, strings []string) error { | ||
crdHandler, err := constructHandler(args) | ||
if err != nil { | ||
return err | ||
} | ||
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// determine location of output | ||
if args.output == "" { | ||
loc, err := os.Executable() | ||
if err != nil { | ||
return fmt.Errorf("failed to determine executable location: %w", err) | ||
} | ||
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args.output = filepath.Dir(loc) | ||
} | ||
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crds, err := crdHandler.CRDs() | ||
if err != nil { | ||
return fmt.Errorf("failed to load CRDs: %w", err) | ||
} | ||
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for _, crd := range crds { | ||
for _, v := range crd.Spec.Versions { | ||
if v.Schema.OpenAPIV3Schema.ID == "" { | ||
v.Schema.OpenAPIV3Schema.ID = "https://crdtoyaml.com/" + crd.Spec.Names.Kind + "." + crd.Spec.Group + "." + v.Name + ".schema.json" | ||
} | ||
if v.Schema.OpenAPIV3Schema.Schema == "" { | ||
v.Schema.OpenAPIV3Schema.Schema = "https://json-schema.org/draft/2020-12/schema" | ||
} | ||
content, err := json.Marshal(v.Schema.OpenAPIV3Schema) | ||
if err != nil { | ||
return fmt.Errorf("failed to marshal schema: %w", err) | ||
} | ||
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if err := os.WriteFile(filepath.Join(args.output, crd.Spec.Names.Kind+"."+crd.Spec.Group+"."+v.Name+".json"), content, 0o644); err != nil { | ||
return fmt.Errorf("failed to write schema: %w", err) | ||
} | ||
} | ||
} | ||
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return nil | ||
} | ||
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func init() { | ||
generateCmd.AddCommand(schemaCmd) | ||
} |