Implement review suggestions

profile/active.go

@@ -59,8 +59,7 @@ func addActiveProfile(profile *Profile) {
 	defer activeProfilesLock.Unlock()
 
 	// Mark any previous profile as outdated.
-	previous, ok := activeProfiles[profile.ScopedID()]
-	if ok {
+	if previous, ok := activeProfiles[profile.ScopedID()]; ok {
 		previous.outdated.Set()
 	}
 

profile/get.go

@@ -30,7 +30,9 @@ var getProfileSingleInflight singleflight.Group
 
 // GetProfile fetches a profile. This function ensures that the loaded profile
 // is shared among all callers. You must always supply both the scopedID and
-// linkedPath parameters whenever available.
+// linkedPath parameters whenever available. The linkedPath is used as the key
+// for locking concurrent requests, so it must be supplied if available.
+// If linkedPath is not supplied, source and id make up the key instead.
 func GetProfile(source profileSource, id, linkedPath string) ( //nolint:gocognit
 	profile *Profile,
 	err error,

resolver/api.go

@@ -37,9 +37,9 @@ func exportDNSResolvers(*api.Request) (interface{}, error) {
 	resolversLock.RLock()
 	defer resolversLock.RUnlock()
 
-	export := make([]*resolverExport, 0, len(globalResolvers))
+	export := make([]resolverExport, 0, len(globalResolvers))
 	for _, r := range globalResolvers {
-		export = append(export, &resolverExport{
+		export = append(export, resolverExport{
 			Resolver: r,
 			Failing:  r.Conn.IsFailing(),
 		})

resolver/namerecord.go

@@ -86,8 +86,8 @@ func GetNameRecord(domain, question string) (*NameRecord, error) {
 	return new, nil
 }
 
-// DeleteNameRecord deletes a NameRecord from the database.
-func DeleteNameRecord(domain, question string) error {
+// ResetCachedRecord deletes a NameRecord from the cache database.
+func ResetCachedRecord(domain, question string) error {
 	// In order to properly delete an entry, we must also clear the caches.
 	recordDatabase.FlushCache()
 	recordDatabase.ClearCache()

resolver/resolve.go

@@ -190,7 +190,7 @@ func checkCache(ctx context.Context, q *Query) *RRCache {
 
 	// Check if we want to reset the cache for this entry.
 	if shouldResetCache(q) {
-		err := DeleteNameRecord(q.FQDN, q.QType.String())
+		err := ResetCachedRecord(q.FQDN, q.QType.String())
 		switch {
 		case err == nil:
 			log.Tracer(ctx).Tracef("resolver: cache for %s%s was reset", q.FQDN, q.QType)

resolver/scopes.go

@@ -179,7 +179,6 @@ var (
 	errInsecureProtocol = errors.New("insecure protocols disabled")
 	errAssignedServer   = errors.New("assigned (dhcp) nameservers disabled")
 	errMulticastDNS     = errors.New("multicast DNS disabled")
-	errSkip             = errors.New("this fqdn cannot resolved by this resolver")
 )
 
 func (q *Query) checkCompliance() error {