diff options
Diffstat (limited to 'resources/post_publish.go')
-rw-r--r-- | resources/post_publish.go | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/resources/post_publish.go b/resources/post_publish.go new file mode 100644 index 000000000..b2adfa5ce --- /dev/null +++ b/resources/post_publish.go @@ -0,0 +1,51 @@ +// Copyright 2020 The Hugo Authors. 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 resources + +import ( + "github.com/gohugoio/hugo/resources/postpub" + "github.com/gohugoio/hugo/resources/resource" +) + +type transformationKeyer interface { + TransformationKey() string +} + +// PostProcess wraps the given Resource for later processing. +func (spec *Spec) PostProcess(r resource.Resource) (postpub.PostPublishedResource, error) { + key := r.(transformationKeyer).TransformationKey() + spec.postProcessMu.RLock() + result, found := spec.PostProcessResources[key] + spec.postProcessMu.RUnlock() + if found { + return result, nil + } + + spec.postProcessMu.Lock() + defer spec.postProcessMu.Unlock() + + // Double check + result, found = spec.PostProcessResources[key] + if found { + return result, nil + } + + result = postpub.NewPostPublishResource(spec.incr.Incr(), r) + if result == nil { + panic("got nil result") + } + spec.PostProcessResources[key] = result + + return result, nil +} |