52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
// Copyright 2020 The Hugo Authors. 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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// 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 resources
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import (
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"github.com/gohugoio/hugo/resources/postpub"
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"github.com/gohugoio/hugo/resources/resource"
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)
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type transformationKeyer interface {
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TransformationKey() string
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}
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// PostProcess wraps the given Resource for later processing.
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func (spec *Spec) PostProcess(r resource.Resource) (postpub.PostPublishedResource, error) {
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key := r.(transformationKeyer).TransformationKey()
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spec.postProcessMu.RLock()
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result, found := spec.PostProcessResources[key]
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spec.postProcessMu.RUnlock()
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if found {
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return result, nil
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}
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spec.postProcessMu.Lock()
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defer spec.postProcessMu.Unlock()
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// Double check
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result, found = spec.PostProcessResources[key]
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if found {
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return result, nil
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}
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result = postpub.NewPostPublishResource(spec.incr.Incr(), r)
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if result == nil {
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panic("got nil result")
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}
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spec.PostProcessResources[key] = result
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return result, nil
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}
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