/
main.go
170 lines (158 loc) · 4.28 KB
/
main.go
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package main
import (
"encoding/json"
"log"
"os"
"strings"
"k8s.io/kube-openapi/pkg/common"
"k8s.io/kube-openapi/pkg/validation/spec"
cv1 "github.com/argoproj/argo-events/pkg/apis/common"
ebv1 "github.com/argoproj/argo-events/pkg/apis/eventbus/v1alpha1"
esv1 "github.com/argoproj/argo-events/pkg/apis/eventsource/v1alpha1"
sv1 "github.com/argoproj/argo-events/pkg/apis/sensor/v1alpha1"
)
type (
obj = map[string]interface{}
)
// Generate OpenAPI spec definitions for Workflow Resource
func main() {
if len(os.Args) <= 3 {
log.Fatal("Supply a version")
}
log.Println(os.Args)
version := os.Args[1]
kubeSwaggerPath := os.Args[2]
output := os.Args[3]
if version != "latest" && !strings.HasPrefix(version, "v") {
version = "v" + version
}
referenceCallback := func(name string) spec.Ref {
return spec.MustCreateRef("#/definitions/" + common.EscapeJsonPointer(swaggify(name)))
}
defs := spec.Definitions{}
dependencies := []string{}
for defName, val := range cv1.GetOpenAPIDefinitions(referenceCallback) {
defs[swaggify(defName)] = val.Schema
dependencies = append(dependencies, val.Dependencies...)
}
for defName, val := range ebv1.GetOpenAPIDefinitions(referenceCallback) {
defs[swaggify(defName)] = val.Schema
dependencies = append(dependencies, val.Dependencies...)
}
for defName, val := range esv1.GetOpenAPIDefinitions(referenceCallback) {
defs[swaggify(defName)] = val.Schema
dependencies = append(dependencies, val.Dependencies...)
}
for defName, val := range sv1.GetOpenAPIDefinitions(referenceCallback) {
defs[swaggify(defName)] = val.Schema
dependencies = append(dependencies, val.Dependencies...)
}
k8sDefinitions := getKubernetesSwagger(kubeSwaggerPath)
for _, dep := range dependencies {
if !strings.Contains(dep, "k8s.io") {
continue
}
d := swaggify(dep)
if kd, ok := k8sDefinitions[d]; ok {
defs[d] = kd
}
}
for d, s := range k8sDefinitions {
defs[d] = s
}
swagger := &spec.Swagger{
SwaggerProps: spec.SwaggerProps{
Swagger: "2.0",
Definitions: defs,
Paths: &spec.Paths{Paths: map[string]spec.PathItem{}},
Info: &spec.Info{
InfoProps: spec.InfoProps{
Title: "Argo Events",
Version: version,
},
},
},
}
jsonBytes, err := json.MarshalIndent(swagger, "", " ")
if err != nil {
log.Fatal(err.Error())
}
err = os.WriteFile(output, jsonBytes, 0644)
if err != nil {
panic(err)
}
f, err := os.Open(output)
if err != nil {
panic(err)
}
// filter out "default" fields from swagger definitions properties because they are being set to empty strings and it makes the swagger validation fail.
swaggerObj := obj{}
err = json.NewDecoder(f).Decode(&swaggerObj)
if err != nil {
panic(err)
}
definitions := swaggerObj["definitions"].(obj)
for _, d := range definitions {
props, ok := d.(obj)["properties"].(obj)
if ok {
for _, prop := range props {
prop := prop.(obj)
delete(prop, "default")
items, ok := prop["items"].(obj)
if ok {
delete(items, "default")
}
additionalProperties, ok := prop["additionalProperties"].(obj)
if ok {
delete(additionalProperties, "default")
}
}
}
props, ok = d.(obj)["additionalProperties"].(obj)
if ok {
delete(props, "default")
}
}
f, err = os.Create(output)
if err != nil {
panic(err)
}
e := json.NewEncoder(f)
e.SetIndent("", " ")
err = e.Encode(swaggerObj)
if err != nil {
panic(err)
}
err = f.Close()
if err != nil {
panic(err)
}
}
// swaggify converts the github package
// e.g.:
// github.com/argoproj/argo-events/pkg/apis/sensor/v1alpha1.Sensor
// to:
// io.argoproj.v1alpha1.Sensor
func swaggify(name string) string {
name = strings.ReplaceAll(name, "github.com/argoproj/argo-events/pkg/apis", "argoproj.io")
parts := strings.Split(name, "/")
hostParts := strings.Split(parts[0], ".")
// reverses something like k8s.io to io.k8s
for i, j := 0, len(hostParts)-1; i < j; i, j = i+1, j-1 {
hostParts[i], hostParts[j] = hostParts[j], hostParts[i]
}
parts[0] = strings.Join(hostParts, ".")
return strings.Join(parts, ".")
}
func getKubernetesSwagger(kubeSwaggerPath string) spec.Definitions {
data, err := os.ReadFile(kubeSwaggerPath)
if err != nil {
panic(err)
}
swagger := &spec.Swagger{}
err = json.Unmarshal(data, swagger)
if err != nil {
panic(err)
}
return swagger.Definitions
}