mirror of
https://github.com/gohugoio/hugo.git
synced 2024-07-02 14:02:32 +00:00
f9978ed164
This commit pulls most of the image related logic into its own package, to make it easier to reason about and extend.
This is also a rewrite of the transformation logic used in Hugo Pipes, mostly to allow constructs like the one below:
{{ ($myimg | fingerprint ).Width }}
Fixes #5903
Fixes #6234
Fixes #6266
441 lines
14 KiB
Go
441 lines
14 KiB
Go
// Copyright 2019 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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"encoding/base64"
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"fmt"
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"io"
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"path/filepath"
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"strconv"
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"strings"
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"sync"
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"testing"
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"github.com/gohugoio/hugo/htesting"
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"github.com/gohugoio/hugo/common/herrors"
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"github.com/gohugoio/hugo/hugofs"
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"github.com/gohugoio/hugo/media"
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"github.com/gohugoio/hugo/resources/internal"
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"github.com/gohugoio/hugo/helpers"
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"github.com/gohugoio/hugo/resources/resource"
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"github.com/spf13/afero"
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qt "github.com/frankban/quicktest"
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)
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const gopher = `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`
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func gopherPNG() io.Reader { return base64.NewDecoder(base64.StdEncoding, strings.NewReader(gopher)) }
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func TestTransform(t *testing.T) {
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c := qt.New(t)
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createTransformer := func(spec *Spec, filename, content string) Transformer {
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filename = filepath.FromSlash(filename)
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fs := spec.Fs.Source
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afero.WriteFile(fs, filename, []byte(content), 0777)
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r, _ := spec.New(ResourceSourceDescriptor{Fs: fs, SourceFilename: filename})
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return r.(Transformer)
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}
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createContentReplacer := func(name, old, new string) ResourceTransformation {
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return &testTransformation{
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name: name,
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transform: func(ctx *ResourceTransformationCtx) error {
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in := helpers.ReaderToString(ctx.From)
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in = strings.Replace(in, old, new, 1)
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ctx.AddOutPathIdentifier("." + name)
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fmt.Fprint(ctx.To, in)
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return nil
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},
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}
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}
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// Verify that we publish the same file once only.
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assertNoDuplicateWrites := func(c *qt.C, spec *Spec) {
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c.Helper()
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d := spec.Fs.Destination.(hugofs.DuplicatesReporter)
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c.Assert(d.ReportDuplicates(), qt.Equals, "")
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}
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assertShouldExist := func(c *qt.C, spec *Spec, filename string, should bool) {
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c.Helper()
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exists, _ := helpers.Exists(filepath.FromSlash(filename), spec.Fs.Destination)
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c.Assert(exists, qt.Equals, should)
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}
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c.Run("All values", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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transformation := &testTransformation{
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name: "test",
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transform: func(ctx *ResourceTransformationCtx) error {
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// Content
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in := helpers.ReaderToString(ctx.From)
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in = strings.Replace(in, "blue", "green", 1)
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fmt.Fprint(ctx.To, in)
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// Media type
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ctx.OutMediaType = media.CSVType
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// Change target
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ctx.ReplaceOutPathExtension(".csv")
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// Add some data to context
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ctx.Data["mydata"] = "Hugo Rocks!"
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return nil
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},
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}
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r := createTransformer(spec, "f1.txt", "color is blue")
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tr, err := r.Transform(transformation)
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c.Assert(err, qt.IsNil)
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content, err := tr.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(content, qt.Equals, "color is green")
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c.Assert(tr.MediaType(), eq, media.CSVType)
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c.Assert(tr.RelPermalink(), qt.Equals, "/f1.csv")
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assertShouldExist(c, spec, "public/f1.csv", true)
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data := tr.Data().(map[string]interface{})
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c.Assert(data["mydata"], qt.Equals, "Hugo Rocks!")
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assertNoDuplicateWrites(c, spec)
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})
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c.Run("Meta only", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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transformation := &testTransformation{
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name: "test",
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transform: func(ctx *ResourceTransformationCtx) error {
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// Change media type only
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ctx.OutMediaType = media.CSVType
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ctx.ReplaceOutPathExtension(".csv")
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return nil
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},
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}
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r := createTransformer(spec, "f1.txt", "color is blue")
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tr, err := r.Transform(transformation)
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c.Assert(err, qt.IsNil)
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content, err := tr.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(content, qt.Equals, "color is blue")
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c.Assert(tr.MediaType(), eq, media.CSVType)
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// The transformed file should only be published if RelPermalink
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// or Permalink is called.
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n := htesting.RandIntn(3)
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shouldExist := true
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switch n {
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case 0:
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tr.RelPermalink()
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case 1:
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tr.Permalink()
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default:
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shouldExist = false
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}
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assertShouldExist(c, spec, "public/f1.csv", shouldExist)
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assertNoDuplicateWrites(c, spec)
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})
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c.Run("Memory-cached transformation", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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// Two transformations with same id, different behaviour.
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t1 := createContentReplacer("t1", "blue", "green")
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t2 := createContentReplacer("t1", "color", "car")
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for i, transformation := range []ResourceTransformation{t1, t2} {
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r := createTransformer(spec, "f1.txt", "color is blue")
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tr, _ := r.Transform(transformation)
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content, err := tr.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(content, qt.Equals, "color is green", qt.Commentf("i=%d", i))
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assertShouldExist(c, spec, "public/f1.t1.txt", false)
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}
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assertNoDuplicateWrites(c, spec)
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})
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c.Run("File-cached transformation", func(c *qt.C) {
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c.Parallel()
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fs := afero.NewMemMapFs()
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for i := 0; i < 2; i++ {
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spec := newTestResourceSpec(specDescriptor{c: c, fs: fs})
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r := createTransformer(spec, "f1.txt", "color is blue")
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var transformation ResourceTransformation
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if i == 0 {
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// There is currently a hardcoded list of transformations that we
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// persist to disk (tocss, postcss).
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transformation = &testTransformation{
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name: "tocss",
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transform: func(ctx *ResourceTransformationCtx) error {
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in := helpers.ReaderToString(ctx.From)
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in = strings.Replace(in, "blue", "green", 1)
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ctx.AddOutPathIdentifier("." + "cached")
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ctx.OutMediaType = media.CSVType
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ctx.Data = map[string]interface{}{
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"Hugo": "Rocks!",
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}
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fmt.Fprint(ctx.To, in)
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return nil
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},
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}
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} else {
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// Force read from file cache.
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transformation = &testTransformation{
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name: "tocss",
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transform: func(ctx *ResourceTransformationCtx) error {
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return herrors.ErrFeatureNotAvailable
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},
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}
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}
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msg := qt.Commentf("i=%d", i)
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tr, _ := r.Transform(transformation)
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c.Assert(tr.RelPermalink(), qt.Equals, "/f1.cached.txt", msg)
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content, err := tr.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(content, qt.Equals, "color is green", msg)
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c.Assert(tr.MediaType(), eq, media.CSVType)
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c.Assert(tr.Data(), qt.DeepEquals, map[string]interface{}{
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"Hugo": "Rocks!",
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})
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assertNoDuplicateWrites(c, spec)
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assertShouldExist(c, spec, "public/f1.cached.txt", true)
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}
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})
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c.Run("Access RelPermalink first", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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t1 := createContentReplacer("t1", "blue", "green")
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r := createTransformer(spec, "f1.txt", "color is blue")
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tr, _ := r.Transform(t1)
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relPermalink := tr.RelPermalink()
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content, err := tr.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(relPermalink, qt.Equals, "/f1.t1.txt")
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c.Assert(content, qt.Equals, "color is green")
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c.Assert(tr.MediaType(), eq, media.TextType)
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assertNoDuplicateWrites(c, spec)
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assertShouldExist(c, spec, "public/f1.t1.txt", true)
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})
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c.Run("Content two", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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t1 := createContentReplacer("t1", "blue", "green")
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t2 := createContentReplacer("t1", "color", "car")
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r := createTransformer(spec, "f1.txt", "color is blue")
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tr, _ := r.Transform(t1, t2)
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content, err := tr.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(content, qt.Equals, "car is green")
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c.Assert(tr.MediaType(), eq, media.TextType)
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assertNoDuplicateWrites(c, spec)
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})
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c.Run("Content two chained", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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t1 := createContentReplacer("t1", "blue", "green")
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t2 := createContentReplacer("t2", "color", "car")
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r := createTransformer(spec, "f1.txt", "color is blue")
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tr1, _ := r.Transform(t1)
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tr2, _ := tr1.Transform(t2)
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content1, err := tr1.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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content2, err := tr2.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(content1, qt.Equals, "color is green")
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c.Assert(content2, qt.Equals, "car is green")
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assertNoDuplicateWrites(c, spec)
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})
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c.Run("Content many", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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const count = 26 // A-Z
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transformations := make([]ResourceTransformation, count)
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for i := 0; i < count; i++ {
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transformations[i] = createContentReplacer(fmt.Sprintf("t%d", i), fmt.Sprint(i), string(i+65))
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}
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var countstr strings.Builder
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for i := 0; i < count; i++ {
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countstr.WriteString(fmt.Sprint(i))
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}
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r := createTransformer(spec, "f1.txt", countstr.String())
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tr, _ := r.Transform(transformations...)
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content, err := tr.(resource.ContentProvider).Content()
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c.Assert(err, qt.IsNil)
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c.Assert(content, qt.Equals, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")
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assertNoDuplicateWrites(c, spec)
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})
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c.Run("Image", func(c *qt.C) {
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c.Parallel()
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spec := newTestResourceSpec(specDescriptor{c: c})
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transformation := &testTransformation{
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name: "test",
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transform: func(ctx *ResourceTransformationCtx) error {
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ctx.AddOutPathIdentifier(".changed")
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return nil
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},
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}
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r := createTransformer(spec, "gopher.png", helpers.ReaderToString(gopherPNG()))
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tr, err := r.Transform(transformation)
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c.Assert(err, qt.IsNil)
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c.Assert(tr.MediaType(), eq, media.PNGType)
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img, ok := tr.(resource.Image)
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c.Assert(ok, qt.Equals, true)
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c.Assert(img.Width(), qt.Equals, 75)
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c.Assert(img.Height(), qt.Equals, 60)
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// RelPermalink called.
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resizedPublished1, err := img.Resize("40x40")
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c.Assert(err, qt.IsNil)
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c.Assert(resizedPublished1.Height(), qt.Equals, 40)
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c.Assert(resizedPublished1.RelPermalink(), qt.Equals, "/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_40x40_resize_linear_2.png")
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assertShouldExist(c, spec, "public/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_40x40_resize_linear_2.png", true)
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// Permalink called.
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resizedPublished2, err := img.Resize("30x30")
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c.Assert(err, qt.IsNil)
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c.Assert(resizedPublished2.Height(), qt.Equals, 30)
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c.Assert(resizedPublished2.Permalink(), qt.Equals, "https://example.com/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_30x30_resize_linear_2.png")
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assertShouldExist(c, spec, "public/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_30x30_resize_linear_2.png", true)
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// Not published because none of RelPermalink or Permalink was called.
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resizedNotPublished, err := img.Resize("50x50")
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c.Assert(err, qt.IsNil)
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c.Assert(resizedNotPublished.Height(), qt.Equals, 50)
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//c.Assert(resized.RelPermalink(), qt.Equals, "/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_50x50_resize_linear_2.png")
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assertShouldExist(c, spec, "public/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_50x50_resize_linear_2.png", false)
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assertNoDuplicateWrites(c, spec)
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})
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c.Run("Concurrent", func(c *qt.C) {
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spec := newTestResourceSpec(specDescriptor{c: c})
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transformers := make([]Transformer, 10)
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transformations := make([]ResourceTransformation, 10)
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for i := 0; i < 10; i++ {
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|
transformers[i] = createTransformer(spec, fmt.Sprintf("f%d.txt", i), fmt.Sprintf("color is %d", i))
|
|
transformations[i] = createContentReplacer("test", strconv.Itoa(i), "blue")
|
|
}
|
|
|
|
var wg sync.WaitGroup
|
|
|
|
for i := 0; i < 13; i++ {
|
|
wg.Add(1)
|
|
go func(i int) {
|
|
defer wg.Done()
|
|
for j := 0; j < 23; j++ {
|
|
id := (i + j) % 10
|
|
tr, err := transformers[id].Transform(transformations[id])
|
|
c.Assert(err, qt.IsNil)
|
|
content, err := tr.(resource.ContentProvider).Content()
|
|
c.Assert(err, qt.IsNil)
|
|
c.Assert(content, qt.Equals, "color is blue")
|
|
c.Assert(tr.RelPermalink(), qt.Equals, fmt.Sprintf("/f%d.test.txt", id))
|
|
}
|
|
}(i)
|
|
}
|
|
wg.Wait()
|
|
|
|
assertNoDuplicateWrites(c, spec)
|
|
})
|
|
}
|
|
|
|
type testTransformation struct {
|
|
name string
|
|
transform func(ctx *ResourceTransformationCtx) error
|
|
}
|
|
|
|
func (t *testTransformation) Key() internal.ResourceTransformationKey {
|
|
return internal.NewResourceTransformationKey(t.name)
|
|
}
|
|
|
|
func (t *testTransformation) Transform(ctx *ResourceTransformationCtx) error {
|
|
return t.transform(ctx)
|
|
}
|