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blobref: faster String(); use camli/testing

This commit is contained in:
Brad Fitzpatrick 2011-03-02 10:18:45 -08:00
parent ad37f29ce3
commit d9bf9a3e14
4 changed files with 23 additions and 14 deletions
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1
build.pl
View File

@ -297,6 +297,7 @@ TARGET: lib/go/jsonsign
- lib/go/ext/openpgp/error - lib/go/ext/openpgp/error
TARGET: lib/go/blobref TARGET: lib/go/blobref
- lib/go/testing
TARGET: lib/go/blobserver TARGET: lib/go/blobserver
- lib/go/blobref - lib/go/blobref

19
lib/go/blobref/blobref.go
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@ -26,7 +26,7 @@ import (
var kBlobRefPattern *regexp.Regexp = regexp.MustCompile(`^([a-z0-9]+)-([a-f0-9]+)$`) var kBlobRefPattern *regexp.Regexp = regexp.MustCompile(`^([a-z0-9]+)-([a-f0-9]+)$`)
var supportedDigests = map[string]func()hash.Hash{ var supportedDigests = map[string]func() hash.Hash{
"sha1": func() hash.Hash { "sha1": func() hash.Hash {
return sha1.New() return sha1.New()
}, },
@ -36,6 +36,8 @@ var supportedDigests = map[string]func()hash.Hash{
type BlobRef struct { type BlobRef struct {
hashName string hashName string
digest string digest string
strValue string // "<hashname>-<digest>"
} }
// SizedBlobRef is like a BlobRef but includes a (potentially mutable) size. // SizedBlobRef is like a BlobRef but includes a (potentially mutable) size.
@ -58,8 +60,8 @@ func (b *BlobRef) Digest() string {
return b.digest return b.digest
} }
func (o *BlobRef) String() string { func (b *BlobRef) String() string {
return fmt.Sprintf("%s-%s", o.hashName, o.digest) return b.strValue
} }
func (o *BlobRef) Equals(other *BlobRef) bool { func (o *BlobRef) Equals(other *BlobRef) bool {
@ -88,16 +90,23 @@ var kExpectedDigestSize = map[string]int{
"sha1": 40, "sha1": 40,
} }
func newBlob(hashName, digest string) *BlobRef {
strValue := fmt.Sprintf("%s-%s", hashName, digest)
return &BlobRef{strValue[0:len(hashName)],
strValue[len(hashName)+1:],
strValue}
}
func blobIfValid(hashname, digest string) *BlobRef { func blobIfValid(hashname, digest string) *BlobRef {
expectedSize := kExpectedDigestSize[hashname] expectedSize := kExpectedDigestSize[hashname]
if expectedSize != 0 && len(digest) != expectedSize { if expectedSize != 0 && len(digest) != expectedSize {
return nil return nil
} }
return &BlobRef{hashname, digest} return newBlob(hashname, digest)
} }
func FromHash(name string, h hash.Hash) *BlobRef { func FromHash(name string, h hash.Hash) *BlobRef {
return &BlobRef{name, fmt.Sprintf("%x", h.Sum())} return newBlob(name, fmt.Sprintf("%x", h.Sum()))
} }
// FromPattern takes a pattern and if it matches 's' with two exactly two valid // FromPattern takes a pattern and if it matches 's' with two exactly two valid

9
lib/go/blobref/blobref_test.go
View File

@ -18,10 +18,12 @@ package blobref
import ( import (
"testing" "testing"
. "camli/testing"
) )
func TestAll(t *testing.T) { func TestAll(t *testing.T) {
br := Parse("sha1-0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33") refStr := "sha1-0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"
br := Parse(refStr)
if br == nil { if br == nil {
t.Fatalf("Failed to parse blobref") t.Fatalf("Failed to parse blobref")
} }
@ -31,9 +33,8 @@ func TestAll(t *testing.T) {
if br.digest != "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33" { if br.digest != "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33" {
t.Errorf("Invalid digest") t.Errorf("Invalid digest")
} }
if !br.IsSupported() { Expect(t, br.IsSupported(), "sha1 should be supported")
t.Errorf("sha1 should be supported") ExpectString(t, refStr, br.String(), "String() value")
}
hash := br.Hash() hash := br.Hash()
hash.Write([]byte("foo")) hash.Write([]byte("foo"))

2
lib/go/blobref/fetcher.go
View File

@ -47,5 +47,3 @@ func (df *dirFetcher) Fetch(b *BlobRef) (file ReadSeekCloser, size int64, err os
size = stat.Size size = stat.Size
return return
} }