grafana/pkg/codegen/jenny_go_resources.go
Ryan McKinley 10ea92fa09
Schemas: minor updates from the k8s branch (#71688)
Co-authored-by: sam boyer <sdboyer@grafana.com>
2023-07-21 19:17:11 +03:00

129 lines
3.2 KiB
Go

package codegen
import (
"bytes"
"fmt"
"go/format"
"strings"
"cuelang.org/go/cue"
"github.com/dave/dst/dstutil"
"github.com/grafana/codejen"
"github.com/grafana/kindsys"
"github.com/grafana/thema/encoding/gocode"
"github.com/grafana/thema/encoding/openapi"
)
var schPath = cue.MakePath(cue.Hid("_#schema", "github.com/grafana/thema"))
type ResourceGoTypesJenny struct {
ApplyFuncs []dstutil.ApplyFunc
ExpandReferences bool
}
func (*ResourceGoTypesJenny) JennyName() string {
return "GoTypesJenny"
}
func (ag *ResourceGoTypesJenny) Generate(kind kindsys.Kind) (*codejen.File, error) {
comm := kind.Props().Common()
sfg := SchemaForGen{
Name: comm.Name,
Schema: kind.Lineage().Latest(),
IsGroup: comm.LineageIsGroup,
}
sch := sfg.Schema
iter, err := sch.Underlying().LookupPath(schPath).Fields()
if err != nil {
return nil, err
}
var subr []string
for iter.Next() {
subr = append(subr, typeNameFromKey(iter.Selector().String()))
}
buf := new(bytes.Buffer)
mname := kind.Props().Common().MachineName
if err := tmpls.Lookup("core_resource.tmpl").Execute(buf, tvars_resource{
PackageName: mname,
KindName: kind.Props().Common().Name,
Version: strings.Replace(sfg.Schema.Version().String(), ".", "-", -1),
SubresourceNames: subr,
}); err != nil {
return nil, fmt.Errorf("failed executing core resource template: %w", err)
}
if err != nil {
return nil, err
}
content, err := format.Source(buf.Bytes())
if err != nil {
return nil, err
}
return codejen.NewFile(fmt.Sprintf("pkg/kinds/%s/%s_gen.go", mname, mname), content, ag), nil
}
type SubresourceGoTypesJenny struct {
ApplyFuncs []dstutil.ApplyFunc
ExpandReferences bool
}
func (*SubresourceGoTypesJenny) JennyName() string {
return "GoResourceTypes"
}
func (g *SubresourceGoTypesJenny) Generate(kind kindsys.Kind) (codejen.Files, error) {
comm := kind.Props().Common()
sfg := SchemaForGen{
Name: comm.Name,
Schema: kind.Lineage().Latest(),
IsGroup: comm.LineageIsGroup,
}
sch := sfg.Schema
// Iterate through all top-level fields and make go types for them
// (this should consist of "spec" and arbitrary subresources)
i, err := sch.Underlying().LookupPath(schPath).Fields()
if err != nil {
return nil, err
}
files := make(codejen.Files, 0)
for i.Next() {
str := i.Selector().String()
b, err := gocode.GenerateTypesOpenAPI(sch, &gocode.TypeConfigOpenAPI{
// TODO will need to account for sanitizing e.g. dashes here at some point
Config: &openapi.Config{
Group: false, // TODO: better
RootName: typeNameFromKey(str),
Subpath: cue.MakePath(cue.Str(str)),
},
PackageName: sfg.Schema.Lineage().Name(),
ApplyFuncs: append(g.ApplyFuncs, PrefixDropper(sfg.Name)),
})
if err != nil {
return nil, err
}
name := sfg.Schema.Lineage().Name()
files = append(files, codejen.File{
RelativePath: fmt.Sprintf("pkg/kinds/%s/%s_%s_gen.go", name, name, strings.ToLower(str)),
Data: b,
From: []codejen.NamedJenny{g},
})
}
return files, nil
}
func typeNameFromKey(key string) string {
if len(key) > 0 {
return strings.ToUpper(key[:1]) + key[1:]
}
return strings.ToUpper(key)
}