/
gen_schema.go
148 lines (127 loc) · 3.36 KB
/
gen_schema.go
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package gen
import (
"bytes"
"os"
"strings"
"github.com/go-faster/errors"
"go.uber.org/zap"
"github.com/ogen-go/ogen/gen/ir"
"github.com/ogen-go/ogen/jsonschema"
)
func saveSchemaTypes(ctx *genctx, gen *schemaGen) error {
for _, t := range gen.side {
if t.IsStruct() {
if err := checkStructRecursions(ctx, t); err != nil {
return errors.Wrap(err, t.Name)
}
}
if err := ctx.saveType(t); err != nil {
return errors.Wrap(err, "save inlined type")
}
}
for ref, t := range gen.localRefs {
if t.IsStruct() {
if err := checkStructRecursions(ctx, t); err != nil {
return errors.Wrap(err, ref)
}
}
if err := ctx.saveRef(ref, t); err != nil {
return errors.Wrap(err, "save referenced type")
}
}
return nil
}
func (g *Generator) generateSchema(ctx *genctx, name string, schema *jsonschema.Schema, optional bool) (*ir.Type, error) {
gen := newSchemaGen(g.opt.Filename, ctx.lookupRef)
gen.log = g.log.Named("schemagen")
gen.fail = g.fail
t, err := gen.generate(name, schema, optional)
if err != nil {
return nil, err
}
if err := saveSchemaTypes(ctx, gen); err != nil {
return nil, errors.Wrap(err, "save schema types")
}
return t, nil
}
// GenerateSchemaOptions is options structure for GenerateSchema.
type GenerateSchemaOptions struct {
// TypeName is root schema type name. Defaults to "Type".
TypeName string
// FileName is output filename. Defaults to "output.gen.go".
FileName string
// PkgName is the package name. Defaults to GOPACKAGE environment variable, if any. Otherwise, to "output".
PkgName string
// TrimPrefix is a ref name prefixes to trim. Defaults to []string{"#/definitions/", "#/$defs/"}.
TrimPrefix []string
// Logger to use.
Logger *zap.Logger
}
func (o *GenerateSchemaOptions) setDefaults() {
if o.TypeName == "" {
o.TypeName = "Type"
}
if o.FileName == "" {
o.FileName = "output.gen.go"
}
if o.PkgName == "" {
o.PkgName = os.Getenv("GOPACKAGE")
if o.PkgName == "" {
o.PkgName = "output"
}
}
if o.TrimPrefix == nil {
o.TrimPrefix = []string{"#/definitions/", "#/$defs/"}
}
if o.Logger == nil {
o.Logger = zap.NewNop()
}
}
// GenerateSchema generates type, validation and JSON encoding for given schema.
func GenerateSchema(schema *jsonschema.Schema, fs FileSystem, opts GenerateSchemaOptions) error {
opts.setDefaults()
ctx := &genctx{
jsonptr: newJSONPointer("#"),
global: newTStorage(),
local: newTStorage(),
}
// TODO(tdakkota): pass input filename
gen := newSchemaGen("", func(ref string) (*ir.Type, bool) {
return nil, false
})
gen.log = opts.Logger.Named("schemagen")
{
prev := gen.nameRef
gen.nameRef = func(ref string) (string, error) {
for _, trim := range opts.TrimPrefix {
ref = strings.TrimPrefix(ref, trim)
}
result, err := prev(ref)
if err != nil {
return "", err
}
return result, nil
}
}
t, err := gen.generate(opts.TypeName, schema, false)
if err != nil {
return errors.Wrap(err, "generate type")
}
t.AddFeature("json")
if err := saveSchemaTypes(ctx, gen); err != nil {
return errors.Wrap(err, "save schema types")
}
w := &writer{
fs: fs,
t: vendoredTemplates(),
buf: new(bytes.Buffer),
wrote: map[string]bool{},
}
if err := w.Generate("jsonschema", opts.FileName, TemplateConfig{
Package: opts.PkgName,
Types: ctx.local.types,
}); err != nil {
return errors.Wrap(err, "write")
}
return nil
}