tools/appvm
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[feat] proper config fetching (not yet used)

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Vladimir Serov 2019-12-29 18:27:37 +03:00
parent 302d004e85
commit ba569d4aab
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1 changed files with 37 additions and 0 deletions
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37
appvm.go
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@ -98,6 +98,43 @@ var xmlTmpl = `
</domain>
`
func evalNix(expr string) (s string) {
command := exec.Command("nix", "eval", expr)
bytes, _ := command.Output()
s = string(bytes)
return
}
// Gets an expression returning AppVM config path
func getAppVMExpressionPath(name string) string {
paths := strings.Split(os.Getenv("APPVM_CONFIGS"), ":")
for _, a := range paths {
searchpath := a + "/nix"
log.Print("Searching " + searchpath + " for expressions")
if _, err := os.Stat(searchpath); os.IsExist(err) {
exprpath := searchpath + "/" + name + ".nix"
if os.Stat(exprpath); os.IsExist(err) {
return exprpath
}
}
log.Print("Local repo " + searchpath + " doesn't have a nix expression for " + name)
}
log.Print("Trying to use remote repo config")
fetchFormat := "(builtins.fetchurl \"raw.githubusercontent.com/%[1]s/%[2]s/master/nix/%[3]s.nix\" )"
splitString := strings.Split(name, "/")
if len(splitString) != 3 {
// nope, not a repo format
return evalNix(fmt.Sprintf(fetchFormat, "jollheef", "appvm", name))
}
return evalNix(fmt.Sprintf(fetchFormat, splitString[0], splitString[1], splitString[2]))
}
func generateXML(name, vmNixPath, reginfo, img, sharedDir string) string {
// TODO: Define XML in go
return fmt.Sprintf(xmlTmpl, "appvm_"+name, vmNixPath, vmNixPath, vmNixPath,