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e4d6ec94b5
In Hugo 0.90.0 we introduced remote support in `resources.Get`.
But with remote resources comes with a higher chance of failing a build (network issues, remote server down etc.).
Before this commit we always failed the build on any unexpected error.
This commit allows the user to check for any error (and potentially fall back to a default local resource):
```htmlbars
{{ $result := resources.Get "https://gohugo.io/img/hugo-logo.png" }}
{{ with $result }}
{{ if .Err }}
{{/* log the error, insert a default image etc. *}}
{{ else }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ end }}
```
Note that the default behaviour is still to fail the build, but we will delay that error until you start using the `Resource`.
Fixes #9529
129 lines
3.1 KiB
Go
129 lines
3.1 KiB
Go
// Copyright 2021 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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"image"
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"github.com/gohugoio/hugo/common/hugio"
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"github.com/gohugoio/hugo/common/maps"
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"github.com/gohugoio/hugo/media"
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"github.com/gohugoio/hugo/resources/images/exif"
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"github.com/gohugoio/hugo/resources/resource"
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)
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var (
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_ error = (*errorResource)(nil)
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// Imnage covers all current Resource implementations.
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_ resource.Image = (*errorResource)(nil)
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// The list of user facing and exported interfaces in resource.go
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// Note that if we're missing some interface here, the user will still
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// get an error, but not as pretty.
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_ resource.ContentResource = (*errorResource)(nil)
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_ resource.ReadSeekCloserResource = (*errorResource)(nil)
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_ resource.ResourcesLanguageMerger = (*resource.Resources)(nil)
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// Make sure it also fails when passed to a pipe function.
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_ ResourceTransformer = (*errorResource)(nil)
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)
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// NewErrorResource wraps err in a Resource where all but the Err method will panic.
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func NewErrorResource(err error) resource.Resource {
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return &errorResource{error: err}
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}
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type errorResource struct {
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error
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}
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func (e *errorResource) Err() error {
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return e.error
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}
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func (e *errorResource) ReadSeekCloser() (hugio.ReadSeekCloser, error) {
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panic(e.error)
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}
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func (e *errorResource) Content() (interface{}, error) {
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panic(e.error)
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}
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func (e *errorResource) ResourceType() string {
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panic(e.error)
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}
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func (e *errorResource) MediaType() media.Type {
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panic(e.error)
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}
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func (e *errorResource) Permalink() string {
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panic(e.error)
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}
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func (e *errorResource) RelPermalink() string {
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panic(e.error)
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}
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func (e *errorResource) Name() string {
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panic(e.error)
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}
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func (e *errorResource) Title() string {
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panic(e.error)
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}
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func (e *errorResource) Params() maps.Params {
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panic(e.error)
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}
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func (e *errorResource) Data() interface{} {
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panic(e.error)
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}
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func (e *errorResource) Height() int {
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panic(e.error)
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}
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func (e *errorResource) Width() int {
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panic(e.error)
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}
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func (e *errorResource) Fill(spec string) (resource.Image, error) {
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panic(e.error)
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}
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func (e *errorResource) Fit(spec string) (resource.Image, error) {
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panic(e.error)
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}
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func (e *errorResource) Resize(spec string) (resource.Image, error) {
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panic(e.error)
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}
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func (e *errorResource) Filter(filters ...interface{}) (resource.Image, error) {
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panic(e.error)
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}
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func (e *errorResource) Exif() *exif.Exif {
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panic(e.error)
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}
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func (e *errorResource) DecodeImage() (image.Image, error) {
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panic(e.error)
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}
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func (e *errorResource) Transform(...ResourceTransformation) (ResourceTransformer, error) {
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panic(e.error)
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}
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