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engine: resources: pkg: Replace state strings with constants

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This helps avoid typos, and gives us something we can export in the
future.
This commit is contained in:
James Shubin
2018-12-28 20:32:23 -05:00
parent d413fac4cb
commit a69a7009f8
1 changed files with 26 additions and 12 deletions
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38
engine/resources/pkg.go
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@@ -34,6 +34,20 @@ func init() {
engine.RegisterResource("pkg", func() engine.Res { return &PkgRes{} })
}
const (
// PkgStateInstalled is the string that represents that the package
// should be installed.
PkgStateInstalled = "installed"
// PkgStateUninstalled is the string that represents that the package
// should be uninstalled.
PkgStateUninstalled = "uninstalled"
// PkgStateNewest is the string that represents that the package should
// be installed in the newest available version.
PkgStateNewest = "newest"
)
// PkgRes is a package resource for packagekit.
type PkgRes struct {
traits.Base // add the base methods without re-implementation
@@ -53,7 +67,7 @@ type PkgRes struct {
// Default returns some sensible defaults for this resource.
func (obj *PkgRes) Default() engine.Res {
return &PkgRes{
State: "installed", // i think this is preferable to "latest"
State: PkgStateInstalled, // i think this is preferable to "latest"
}
}
@@ -190,7 +204,7 @@ func (obj *PkgRes) pkgMappingHelper(bus *packagekit.Conn) (map[string]*packageki
var filter uint64 // initializes at the "zero" value of 0
filter += packagekit.PkFilterEnumArch // always search in our arch (optional!)
// we're requesting latest version, or to narrow down install choices!
if obj.State == "newest" || obj.State == "installed" {
if obj.State == PkgStateNewest || obj.State == PkgStateInstalled {
// if we add this, we'll still see older packages if installed
// this is an optimization, and is *optional*, this logic is
// handled inside of PackagesToPackageIDs now automatically!
@@ -283,13 +297,13 @@ func (obj *PkgRes) CheckApply(apply bool) (checkOK bool, err error) {
data, _ := result[obj.Name()] // if above didn't error, we won't either!
validState := util.BoolMapTrue(util.BoolMapValues(states))
// obj.State == "installed" || "uninstalled" || "newest" || "4.2-1.fc23"
// obj.State == PkgStateInstalled || PkgStateUninstalled || PkgStateNewest || "4.2-1.fc23"
switch obj.State {
case "installed":
case PkgStateInstalled:
fallthrough
case "uninstalled":
case PkgStateUninstalled:
fallthrough
case "newest":
case PkgStateNewest:
if validState {
return true, nil // state is correct, exit!
}
@@ -321,15 +335,15 @@ func (obj *PkgRes) CheckApply(apply bool) (checkOK bool, err error) {
// apply correct state!
obj.init.Logf("Set(%s): %s...", obj.State, obj.fmtNames(util.StrListIntersection(applyPackages, obj.getNames())))
switch obj.State {
case "uninstalled": // run remove
case PkgStateUninstalled: // run remove
// NOTE: packageID is different than when installed, because now
// it has the "installed" flag added to the data portion if it!!
// it has the "installed" flag added to the data portion of it!!
err = bus.RemovePackages(packageIDs, transactionFlags)
case "newest": // TODO: isn't this the same operation as install, below?
case PkgStateNewest: // TODO: isn't this the same operation as install, below?
err = bus.UpdatePackages(packageIDs, transactionFlags)
case "installed":
case PkgStateInstalled:
fallthrough // same method as for "set specific version", below
default: // version string
err = bus.InstallPackages(packageIDs, transactionFlags)
@@ -540,8 +554,8 @@ func (obj *PkgRes) GroupCmp(r engine.GroupableRes) error {
if !ok {
return fmt.Errorf("resource is not the same kind")
}
objStateIsVersion := (obj.State != "installed" && obj.State != "uninstalled" && obj.State != "newest") // must be a ver. string
resStateIsVersion := (res.State != "installed" && res.State != "uninstalled" && res.State != "newest") // must be a ver. string
objStateIsVersion := (obj.State != PkgStateInstalled && obj.State != PkgStateUninstalled && obj.State != PkgStateNewest) // must be a ver. string
resStateIsVersion := (res.State != PkgStateInstalled && res.State != PkgStateUninstalled && res.State != PkgStateNewest) // must be a ver. string
if objStateIsVersion || resStateIsVersion {
// can't merge specific version checks atm
return fmt.Errorf("resource uses a version string")