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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 erasure
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import "fmt"
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type TokenType int
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const (
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Identity TokenType = iota // required dependency
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Option // optional dependency
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IOEither // lazy and required
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IOOption // lazy and optional
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Multi // array of implementations
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Item // item of a multi token
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IOMulti // lazy and multi
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Unknown
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)
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// Dependency describes the relationship to a service
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type Dependency interface {
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fmt.Stringer
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// Id returns a unique identifier for a token that can be used as a cache key
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Id() string
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// Type returns a tag that identifies the behaviour of the dependency
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Type() TokenType
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}
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func AsDependency[T Dependency](t T) Dependency {
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return t
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}
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