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openapi.go
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openapi.go
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// Copyright 2018 The Operator-SDK Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package genutil
import (
"fmt"
"os/exec"
"path/filepath"
"strings"
"github.com/operator-framework/operator-sdk/internal/pkg/scaffold"
"github.com/operator-framework/operator-sdk/internal/pkg/scaffold/input"
"github.com/operator-framework/operator-sdk/internal/util/k8sutil"
"github.com/operator-framework/operator-sdk/internal/util/projutil"
log "github.com/sirupsen/logrus"
)
// OpenAPIGen generates OpenAPI validation specs for all CRD's in dirs. hf is
// a path to a header file containing text to add to generated files.
func OpenAPIGen(hf string) error {
projutil.MustInProjectRoot()
absProjectPath := projutil.MustGetwd()
repoPkg := projutil.CheckAndGetProjectGoPkg()
srcDir := filepath.Join(absProjectPath, "vendor", "k8s.io", "kube-openapi")
binDir := filepath.Join(absProjectPath, scaffold.BuildBinDir)
if err := buildOpenAPIGenBinary(binDir, srcDir); err != nil {
return err
}
gvMap, err := parseGroupVersions()
if err != nil {
return fmt.Errorf("failed to parse group versions: (%v)", err)
}
gvb := &strings.Builder{}
for g, vs := range gvMap {
gvb.WriteString(fmt.Sprintf("%s:%v, ", g, vs))
}
log.Infof("Running OpenAPI code-generation for Custom Resource group versions: [%v]\n", gvb.String())
apisPkg := filepath.Join(repoPkg, scaffold.ApisDir)
fqApiStr := createFQApis(apisPkg, gvMap)
fqApis := strings.Split(fqApiStr, ",")
f := func(a string) error { return openAPIGen(binDir, a, fqApis) }
if err = withHeaderFile(hf, f); err != nil {
return err
}
s := &scaffold.Scaffold{}
cfg := &input.Config{
Repo: repoPkg,
AbsProjectPath: absProjectPath,
ProjectName: filepath.Base(absProjectPath),
}
crds, err := k8sutil.GetCRDs(scaffold.CRDsDir)
if err != nil {
return err
}
for _, crd := range crds {
g, v, k := crd.Spec.Group, crd.Spec.Version, crd.Spec.Names.Kind
if v == "" {
if len(crd.Spec.Versions) != 0 {
v = crd.Spec.Versions[0].Name
} else {
return fmt.Errorf("crd of group %s kind %s has no version", g, k)
}
}
r, err := scaffold.NewResource(g+"/"+v, k)
if err != nil {
return err
}
err = s.Execute(cfg,
&scaffold.CRD{Resource: r, IsOperatorGo: projutil.IsOperatorGo()},
)
if err != nil {
return err
}
}
log.Info("Code-generation complete.")
return nil
}
func buildOpenAPIGenBinary(binDir, codegenSrcDir string) error {
genDirs := []string{"./cmd/openapi-gen"}
return buildCodegenBinaries(genDirs, binDir, codegenSrcDir)
}
func openAPIGen(binDir, hf string, fqApis []string) (err error) {
cgPath := filepath.Join(binDir, "openapi-gen")
for _, fqApi := range fqApis {
args := []string{
"--input-dirs", fqApi,
"--output-package", fqApi,
"--output-file-base", "zz_generated.openapi",
// openapi-gen requires a boilerplate file. Either use header or an
// empty file if header is empty.
"--go-header-file", hf,
}
cmd := exec.Command(cgPath, args...)
if err = projutil.ExecCmd(cmd); err != nil {
return fmt.Errorf("failed to perform openapi code-generation: %v", err)
}
}
return nil
}