fix: add WithLock to limit concurrency

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

internal/bracket/bracket.go

@@ -0,0 +1,52 @@
+// 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 file
+
+import (
+	F "github.com/IBM/fp-go/function"
+)
+
+// Bracket makes sure that a resource is cleaned up in the event of an error. The release action is called regardless of
+// whether the body action returns and error or not.
+func Bracket[
+	GA, // IOEither[E, A]
+	GB, // IOEither[E, A]
+	GANY, // IOEither[E, ANY]
+
+	EB, // Either[E, B]
+
+	A, B, ANY any](
+
+	ofeb func(EB) GB,
+
+	chainab func(GA, func(A) GB) GB,
+	chainebb func(GB, func(EB) GB) GB,
+	chainany func(GANY, func(ANY) GB) GB,
+
+	acquire GA,
+	use func(A) GB,
+	release func(A, EB) GANY,
+) GB {
+	return chainab(acquire,
+		func(a A) GB {
+			return chainebb(use(a), func(eb EB) GB {
+				return chainany(
+					release(a, eb),
+					F.Constant1[ANY](ofeb(eb)),
+				)
+			})
+		})
+}