chore(lint): add containedctx, decorder and errchkjson

internal/httpproxy/handler.go

@@ -25,7 +25,7 @@ func newHandler(ctx context.Context, wg *sync.WaitGroup, logger Logger,
 }
 
 type handler struct {
-	ctx                context.Context
+	ctx                context.Context //nolint:containedctx
 	wg                 *sync.WaitGroup
 	client             *http.Client
 	logger             Logger

internal/server/dns.go

@@ -19,7 +19,7 @@ func newDNSHandler(ctx context.Context, looper dns.Looper,
 }
 
 type dnsHandler struct {
-	ctx    context.Context
+	ctx    context.Context //nolint:containedctx
 	looper dns.Looper
 	warner warner
 }

internal/server/handlerv0.go

@@ -22,7 +22,7 @@ func newHandlerV0(ctx context.Context, logger infoWarner,
 }
 
 type handlerV0 struct {
-	ctx     context.Context
+	ctx     context.Context //nolint:containedctx
 	logger  infoWarner
 	vpn     vpn.Looper
 	dns     dns.Looper

internal/server/openvpn.go

@@ -21,7 +21,7 @@ func newOpenvpnHandler(ctx context.Context, looper vpn.Looper,
 }
 
 type openvpnHandler struct {
-	ctx    context.Context
+	ctx    context.Context //nolint:containedctx
 	looper vpn.Looper
 	pf     portforward.Getter
 	warner warner

internal/server/updater.go

@@ -21,7 +21,7 @@ func newUpdaterHandler(
 }
 
 type updaterHandler struct {
-	ctx    context.Context
+	ctx    context.Context //nolint:containedctx
 	looper updater.Looper
 	warner warner
 }

internal/storage/read.go

@@ -38,7 +38,7 @@ var (
 	errDecodeProvider = errors.New("cannot decode servers for provider")
 )
 
-func (s *Storage) extractServersFromBytes(b []byte, hardcoded models.AllServers) ( //nolint:gocognit,gocyclo
+func (s *Storage) extractServersFromBytes(b []byte, hardcoded models.AllServers) ( //nolint:gocognit,gocyclo,maintidx
 	servers models.AllServers, err error) {
 	var versions allVersions
 	if err := json.Unmarshal(b, &versions); err != nil {