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45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package generic
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import (
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"context"
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E "github.com/IBM/fp-go/either"
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F "github.com/IBM/fp-go/function"
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IO "github.com/IBM/fp-go/io/generic"
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)
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// WithLock executes the provided IO operation in the scope of a lock
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func WithLock[
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GRA ~func(context.Context) GIOA,
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GIOA ~func() E.Either[error, A],
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GRCANCEL ~func(context.Context) GIOCANCEL,
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GIOCANCEL ~func() E.Either[error, context.CancelFunc],
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A any](lock GRCANCEL) func(fa GRA) GRA {
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type GRANY func(ctx context.Context) func() E.Either[error, any]
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type IOANY func() any
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return F.Flow2(
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F.Constant1[context.CancelFunc, GRA],
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WithResource[GRA, GRCANCEL, GRANY](lock, F.Flow2(
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IO.FromImpure[IOANY, context.CancelFunc],
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FromIO[GRANY, IOANY],
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)),
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)
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}
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