fix: add WithLock to limit concurrency

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>

readerioeither/generic/bracket.go

@@ -17,7 +17,7 @@ package generic
 
 import (
 	ET "github.com/IBM/fp-go/either"
-	G "github.com/IBM/fp-go/internal/file"
+	G "github.com/IBM/fp-go/internal/bracket"
 	I "github.com/IBM/fp-go/readerio/generic"
 )
 

readerioeither/generic/sync.go

@@ -0,0 +1,28 @@
+// Copyright (c) 2023 IBM Corp.
+// All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package generic
+
+import (
+	"context"
+
+	ET "github.com/IBM/fp-go/either"
+	G "github.com/IBM/fp-go/readerio/generic"
+)
+
+// WithLock executes the provided IO operation in the scope of a lock
+func WithLock[GEA ~func(R) GIOA, GIOA ~func() ET.Either[E, A], R, E, A any](lock func() context.CancelFunc) func(fa GEA) GEA {
+	return G.WithLock[GEA](lock)
+}