/
manifest.go
55 lines (45 loc) · 946 Bytes
/
manifest.go
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package version
import (
"fmt"
"io/ioutil"
"os"
"strings"
)
const (
operatorHomePath = "OPERATOR_HOME"
manifestFile = "MANIFEST"
)
var manifest = make(map[string]string)
func read() error {
// read MANIFEST file, that contains Operator Version Information
// absolute path: $(OPERATOR_HOME)/MANIFEST
path := os.Getenv(operatorHomePath)
body, err := ioutil.ReadFile(path + "/" + manifestFile)
if err != nil {
return err
}
raws := strings.Split(string(body), "\n")
for _, raw := range raws {
if raw != "" {
values := strings.Split(raw, "=")
if len(values) == 2 {
manifest[values[0]] = values[1]
}
}
}
return nil
}
func GetManifestValue(key string) (string, error) {
// initialize manifest lazily
if len(manifest) == 0 {
err := read()
if err != nil {
return "", err
}
}
val, ok := manifest[key]
if ok {
return val, nil
}
return "", fmt.Errorf("key %v not found in manifest", key)
}