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document.go
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document.go
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package validators
import (
"encoding/json"
"errors"
"fmt"
"html/template"
"io"
"os"
"regexp"
"strings"
"github.com/btoll/validator/lib"
)
var reKind = regexp.MustCompile(`"kind":\s"(?P<Kind>.*)",`)
type Manifest interface {
ConfigMapManifest | DeploymentManifest | IngressManifest | ServiceManifest
Write()
}
type Document[T Manifest] struct {
Manifest T `json:"manifest"`
}
type Metadata struct {
Name string `json:"name,omitempty"`
Namespace string `json:"namespace,omitempty"`
Labels Data `json:"labels,omitempty"`
Annotations map[string]string `json:"annotations,omitempty"`
}
type Data map[string]string
var tpl *template.Template
func (m *Document[T]) DecodeAndPrint(dec *json.Decoder) error {
err := dec.Decode(&m.Manifest)
if err != nil {
return err
}
m.Manifest.Write()
return nil
}
func New(filename string) {
b, _ := lib.GetFileContents(filename)
v := reKind.FindAllSubmatch(b, -1)
if len(v) > 0 {
var err error
tpl, err = template.ParseGlob("tpl/*")
if err != nil {
fmt.Println(err)
}
dec := json.NewDecoder(strings.NewReader(string(b)))
for _, kind := range v {
switch string(kind[1]) {
case "ConfigMap":
var m Document[ConfigMapManifest]
err = m.DecodeAndPrint(dec)
case "Deployment":
var m Document[DeploymentManifest]
err = m.DecodeAndPrint(dec)
case "Ingress":
var m Document[IngressManifest]
err = m.DecodeAndPrint(dec)
case "Service":
var m Document[ServiceManifest]
err = m.DecodeAndPrint(dec)
}
if err == io.EOF {
// all done
break
}
}
}
}
func RemoveDir(buildDir, serviceDir string) error {
err := os.RemoveAll(buildDir)
if err != nil {
return err
}
f, err := os.Open(serviceDir)
_, err = f.ReadDir(1)
if errors.Is(err, io.EOF) {
err := os.RemoveAll(serviceDir)
if err != nil {
return err
}
}
return nil
}
func Validate(localFile, remoteFile string) (bool, error) {
lb, err := os.ReadFile(localFile)
if err != nil {
return false, err
}
rb, err := os.ReadFile(remoteFile)
if err != nil {
return false, err
}
return string(lb) == string(rb), nil
}
func WriteTemplate(to, from string, T any) error {
f, err := os.Create(to)
if err != nil {
return err
}
err = tpl.ExecuteTemplate(f, from, T)
if err != nil {
return err
}
return nil
}