Added switch to only show warnings instead of errors in automatic update public index

Author: bgn42

cmd/installer/root.go

@@ -42,6 +42,9 @@ const DefaultPublicCacheIndex = KeilDefaultPackRoot + PublicCacheIndex
 // would be reset to the public index URL when reading the public index
 var ActualPublicIndex = DefaultPublicIndex
 
+// flag for update public index if online to show no error but a warning instead
+var WarningInsteadOfErrors = false
+
 type lockedSlice struct {
 	lock  sync.Mutex
 	slice []xml.PdscTag
@@ -900,10 +903,17 @@ func UpdateInstalledPDSCFiles(pidxXML, cidxXML *xml.PidxXML, updatePrivatePdsc,
 func UpdatePublicIndexIfOnline() error {
 	// If public index already exists then first check if online, then its timestamp
 	// if we are online and it is too old then download a current version
+
+	WarningInsteadOfErrors = true
+
 	if utils.FileExists(Installation.PublicIndex) {
 		err := utils.CheckConnection(ConnectionTryURL, 0)
 		if err != nil && errors.Unwrap(err) != errs.ErrOffline {
-			return err
+			if WarningInsteadOfErrors {
+				log.Warnf("Cannot check for public index update: %v", err)
+			} else {
+				return err
+			}
 		}
 		if errors.Unwrap(err) != errs.ErrOffline {
 			var updateConf updateCfg
@@ -925,6 +935,10 @@ func UpdatePublicIndexIfOnline() error {
 		UnlockPackRoot()
 		err1 := UpdatePublicIndex(ActualPublicIndex, false, false, false, false, false, 0, 0)
 		if err1 != nil {
+			if WarningInsteadOfErrors {
+				log.Warnf("Cannot update public index: %v", err1)
+				return nil
+			}
 			return err1
 		}
 		var updateConf updateCfg
@@ -1385,9 +1399,9 @@ func ListInstalledPacks(listCached, listPublic, listUpdates, listRequirements, t
 // 1.2.1. if pack's pdsc file not found in Installation.LocalDir then raise errs.ErrPackURLCannotBeFound
 // 1.2.2. read .Local/PDSC file into pdscXML
 // 1.2.3. releastTag = pdscXML.FindReleaseTagByVersion(pack.Version)
-// 1.2.3. if releaseTag == nil then raise ErrPackVersionNotFoundInPdsc
-// 1.2.4. if releaseTag.URL != "", return releaseTag.URL
-// 1.2.5. return pdscTag.URL + pack.Vendor + "." + pack.Name + "." + pack.Version + ".pack"
+// 1.2.4. if releaseTag == nil then raise ErrPackVersionNotFoundInPdsc
+// 1.2.5. if releaseTag.URL != "", return releaseTag.URL
+// 1.2.6. return pdscTag.URL + pack.Vendor + "." + pack.Name + "." + pack.Version + ".pack"
 //
 // The function resolves the version modifier to determine the correct version of the pack to fetch.
 // It then checks the release tag for the specified version and returns the URL if found.
@@ -1755,6 +1769,10 @@ type updateCfg struct {
 func (p *PacksInstallationType) checkUpdateCfg(conf *updateCfg) error {
 	f, err := os.Open(filepath.Join(p.WebDir, "update.cfg"))
 	if err != nil {
+		if WarningInsteadOfErrors {
+			log.Warnf("Could not open update.cfg: %v", err)
+			return nil
+		}
 		return err
 	}
 	defer f.Close()