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resources: Cache Exif data to disk

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```bash
name                        old time/op    new time/op    delta
ImageExif/Cold_cache-4         312µs ±28%     355µs ± 7%     ~     (p=0.343 n=4+4)
ImageExif/Cold_cache,_10-4     479µs ± 6%     546µs ± 0%  +13.91%  (p=0.029 n=4+4)
ImageExif/Warm_cache-4         272µs ± 1%      81µs ± 5%  -70.30%  (p=0.029 n=4+4)

name                        old alloc/op   new alloc/op   delta
ImageExif/Cold_cache-4         151kB ± 0%     161kB ± 0%   +6.46%  (p=0.029 n=4+4)
ImageExif/Cold_cache,_10-4     179kB ± 0%     189kB ± 0%   +5.49%  (p=0.029 n=4+4)
ImageExif/Warm_cache-4         151kB ± 0%      13kB ± 0%  -91.52%  (p=0.029 n=4+4)

name                        old allocs/op  new allocs/op  delta
ImageExif/Cold_cache-4         1.03k ± 0%     1.21k ± 0%  +17.78%  (p=0.029 n=4+4)
ImageExif/Cold_cache,_10-4     1.65k ± 0%     1.83k ± 0%  +11.09%  (p=0.029 n=4+4)
ImageExif/Warm_cache-4         1.03k ± 0%     0.28k ± 0%  -72.40%  (p=0.029 n=4+4)
```

Fixes #6291
This commit is contained in:
Bjørn Erik Pedersen
2019-09-01 17:27:21 +02:00
parent de9cbf6195
commit ce47c21a29
7 changed files with 172 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
resources/images/exif/exif_test.go
View File

@@ -14,12 +14,15 @@
package exif
import (
"encoding/json"
"math/big"
"os"
"path/filepath"
"testing"
"time"
"github.com/gohugoio/hugo/htesting/hqt"
"github.com/google/go-cmp/cmp"
qt "github.com/frankban/quicktest"
)
@@ -40,16 +43,24 @@ func TestExif(t *testing.T) {
c.Assert(x.Lat, qt.Equals, float64(36.59744166666667))
c.Assert(x.Long, qt.Equals, float64(-4.50846))
v, found := x.Values["LensModel"]
v, found := x.Tags["LensModel"]
c.Assert(found, qt.Equals, true)
lensModel, ok := v.(string)
c.Assert(ok, qt.Equals, true)
c.Assert(lensModel, qt.Equals, "smc PENTAX-DA* 16-50mm F2.8 ED AL [IF] SDM")
v, found = x.Values["DateTime"]
v, found = x.Tags["DateTime"]
c.Assert(found, qt.Equals, true)
c.Assert(v, hqt.IsSameType, time.Time{})
// Verify that it survives a round-trip to JSON and back.
data, err := json.Marshal(x)
c.Assert(err, qt.IsNil)
x2 := &Exif{}
err = json.Unmarshal(data, x2)
c.Assert(x2, eq, x)
}
func TestExifPNG(t *testing.T) {
@@ -81,3 +92,14 @@ func BenchmarkDecodeExif(b *testing.B) {
f.Seek(0, 0)
}
}
var eq = qt.CmpEquals(
cmp.Comparer(
func(v1, v2 *big.Rat) bool {
return v1.RatString() == v2.RatString()
},
),
cmp.Comparer(func(v1, v2 time.Time) bool {
return v1.Unix() == v2.Unix()
}),
)