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-rw-r--r--storage/filesystem/dotgit/reader.go79
-rw-r--r--storage/filesystem/object.go21
-rw-r--r--storage/filesystem/object_test.go63
-rw-r--r--storage/filesystem/storage.go3
4 files changed, 156 insertions, 10 deletions
diff --git a/storage/filesystem/dotgit/reader.go b/storage/filesystem/dotgit/reader.go
new file mode 100644
index 0000000..a82ac94
--- /dev/null
+++ b/storage/filesystem/dotgit/reader.go
@@ -0,0 +1,79 @@
+package dotgit
+
+import (
+ "fmt"
+ "io"
+ "os"
+
+ "github.com/go-git/go-git/v5/plumbing"
+ "github.com/go-git/go-git/v5/plumbing/format/objfile"
+ "github.com/go-git/go-git/v5/utils/ioutil"
+)
+
+var _ (plumbing.EncodedObject) = &EncodedObject{}
+
+type EncodedObject struct {
+ dir *DotGit
+ h plumbing.Hash
+ t plumbing.ObjectType
+ sz int64
+}
+
+func (e *EncodedObject) Hash() plumbing.Hash {
+ return e.h
+}
+
+func (e *EncodedObject) Reader() (io.ReadCloser, error) {
+ f, err := e.dir.Object(e.h)
+ if err != nil {
+ if os.IsNotExist(err) {
+ return nil, plumbing.ErrObjectNotFound
+ }
+
+ return nil, err
+ }
+ r, err := objfile.NewReader(f)
+ if err != nil {
+ return nil, err
+ }
+
+ t, size, err := r.Header()
+ if err != nil {
+ _ = r.Close()
+ return nil, err
+ }
+ if t != e.t {
+ _ = r.Close()
+ return nil, objfile.ErrHeader
+ }
+ if size != e.sz {
+ _ = r.Close()
+ return nil, objfile.ErrHeader
+ }
+ return ioutil.NewReadCloserWithCloser(r, f.Close), nil
+}
+
+func (e *EncodedObject) SetType(plumbing.ObjectType) {}
+
+func (e *EncodedObject) Type() plumbing.ObjectType {
+ return e.t
+}
+
+func (e *EncodedObject) Size() int64 {
+ return e.sz
+}
+
+func (e *EncodedObject) SetSize(int64) {}
+
+func (e *EncodedObject) Writer() (io.WriteCloser, error) {
+ return nil, fmt.Errorf("Not supported")
+}
+
+func NewEncodedObject(dir *DotGit, h plumbing.Hash, t plumbing.ObjectType, size int64) *EncodedObject {
+ return &EncodedObject{
+ dir: dir,
+ h: h,
+ t: t,
+ sz: size,
+ }
+}
diff --git a/storage/filesystem/object.go b/storage/filesystem/object.go
index 0c25dad..5c91bcd 100644
--- a/storage/filesystem/object.go
+++ b/storage/filesystem/object.go
@@ -204,9 +204,9 @@ func (s *ObjectStorage) packfile(idx idxfile.Index, pack plumbing.Hash) (*packfi
var p *packfile.Packfile
if s.objectCache != nil {
- p = packfile.NewPackfileWithCache(idx, s.dir.Fs(), f, s.objectCache)
+ p = packfile.NewPackfileWithCache(idx, s.dir.Fs(), f, s.objectCache, s.options.LargeObjectThreshold)
} else {
- p = packfile.NewPackfile(idx, s.dir.Fs(), f)
+ p = packfile.NewPackfile(idx, s.dir.Fs(), f, s.options.LargeObjectThreshold)
}
return p, s.storePackfileInCache(pack, p)
@@ -389,7 +389,6 @@ func (s *ObjectStorage) getFromUnpacked(h plumbing.Hash) (obj plumbing.EncodedOb
return cacheObj, nil
}
- obj = s.NewEncodedObject()
r, err := objfile.NewReader(f)
if err != nil {
return nil, err
@@ -402,6 +401,13 @@ func (s *ObjectStorage) getFromUnpacked(h plumbing.Hash) (obj plumbing.EncodedOb
return nil, err
}
+ if s.options.LargeObjectThreshold > 0 && size > s.options.LargeObjectThreshold {
+ obj = dotgit.NewEncodedObject(s.dir, h, t, size)
+ return obj, nil
+ }
+
+ obj = s.NewEncodedObject()
+
obj.SetType(t)
obj.SetSize(size)
w, err := obj.Writer()
@@ -595,6 +601,7 @@ func (s *ObjectStorage) buildPackfileIters(
return newPackfileIter(
s.dir.Fs(), pack, t, seen, s.index[h],
s.objectCache, s.options.KeepDescriptors,
+ s.options.LargeObjectThreshold,
)
},
}, nil
@@ -684,6 +691,7 @@ func NewPackfileIter(
idxFile billy.File,
t plumbing.ObjectType,
keepPack bool,
+ largeObjectThreshold int64,
) (storer.EncodedObjectIter, error) {
idx := idxfile.NewMemoryIndex()
if err := idxfile.NewDecoder(idxFile).Decode(idx); err != nil {
@@ -695,7 +703,7 @@ func NewPackfileIter(
}
seen := make(map[plumbing.Hash]struct{})
- return newPackfileIter(fs, f, t, seen, idx, nil, keepPack)
+ return newPackfileIter(fs, f, t, seen, idx, nil, keepPack, largeObjectThreshold)
}
func newPackfileIter(
@@ -706,12 +714,13 @@ func newPackfileIter(
index idxfile.Index,
cache cache.Object,
keepPack bool,
+ largeObjectThreshold int64,
) (storer.EncodedObjectIter, error) {
var p *packfile.Packfile
if cache != nil {
- p = packfile.NewPackfileWithCache(index, fs, f, cache)
+ p = packfile.NewPackfileWithCache(index, fs, f, cache, largeObjectThreshold)
} else {
- p = packfile.NewPackfile(index, fs, f)
+ p = packfile.NewPackfile(index, fs, f, largeObjectThreshold)
}
iter, err := p.GetByType(t)
diff --git a/storage/filesystem/object_test.go b/storage/filesystem/object_test.go
index 22f5b0c..59b40d3 100644
--- a/storage/filesystem/object_test.go
+++ b/storage/filesystem/object_test.go
@@ -107,6 +107,27 @@ func (s *FsSuite) TestGetFromPackfileMaxOpenDescriptors(c *C) {
c.Assert(err, IsNil)
}
+func (s *FsSuite) TestGetFromPackfileMaxOpenDescriptorsLargeObjectThreshold(c *C) {
+ fs := fixtures.ByTag(".git").ByTag("multi-packfile").One().DotGit()
+ o := NewObjectStorageWithOptions(dotgit.New(fs), cache.NewObjectLRUDefault(), Options{
+ MaxOpenDescriptors: 1,
+ LargeObjectThreshold: 1,
+ })
+
+ expected := plumbing.NewHash("8d45a34641d73851e01d3754320b33bb5be3c4d3")
+ obj, err := o.getFromPackfile(expected, false)
+ c.Assert(err, IsNil)
+ c.Assert(obj.Hash(), Equals, expected)
+
+ expected = plumbing.NewHash("e9cfa4c9ca160546efd7e8582ec77952a27b17db")
+ obj, err = o.getFromPackfile(expected, false)
+ c.Assert(err, IsNil)
+ c.Assert(obj.Hash(), Equals, expected)
+
+ err = o.Close()
+ c.Assert(err, IsNil)
+}
+
func (s *FsSuite) TestGetSizeOfObjectFile(c *C) {
fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit()
o := NewObjectStorage(dotgit.New(fs), cache.NewObjectLRUDefault())
@@ -160,6 +181,21 @@ func (s *FsSuite) TestGetFromPackfileMultiplePackfiles(c *C) {
c.Assert(obj.Hash(), Equals, expected)
}
+func (s *FsSuite) TestGetFromPackfileMultiplePackfilesLargeObjectThreshold(c *C) {
+ fs := fixtures.ByTag(".git").ByTag("multi-packfile").One().DotGit()
+ o := NewObjectStorageWithOptions(dotgit.New(fs), cache.NewObjectLRUDefault(), Options{LargeObjectThreshold: 1})
+
+ expected := plumbing.NewHash("8d45a34641d73851e01d3754320b33bb5be3c4d3")
+ obj, err := o.getFromPackfile(expected, false)
+ c.Assert(err, IsNil)
+ c.Assert(obj.Hash(), Equals, expected)
+
+ expected = plumbing.NewHash("e9cfa4c9ca160546efd7e8582ec77952a27b17db")
+ obj, err = o.getFromPackfile(expected, false)
+ c.Assert(err, IsNil)
+ c.Assert(obj.Hash(), Equals, expected)
+}
+
func (s *FsSuite) TestIter(c *C) {
fixtures.ByTag(".git").ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
fs := f.DotGit()
@@ -179,6 +215,25 @@ func (s *FsSuite) TestIter(c *C) {
})
}
+func (s *FsSuite) TestIterLargeObjectThreshold(c *C) {
+ fixtures.ByTag(".git").ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
+ fs := f.DotGit()
+ o := NewObjectStorageWithOptions(dotgit.New(fs), cache.NewObjectLRUDefault(), Options{LargeObjectThreshold: 1})
+
+ iter, err := o.IterEncodedObjects(plumbing.AnyObject)
+ c.Assert(err, IsNil)
+
+ var count int32
+ err = iter.ForEach(func(o plumbing.EncodedObject) error {
+ count++
+ return nil
+ })
+
+ c.Assert(err, IsNil)
+ c.Assert(count, Equals, f.ObjectsCount)
+ })
+}
+
func (s *FsSuite) TestIterWithType(c *C) {
fixtures.ByTag(".git").Test(c, func(f *fixtures.Fixture) {
for _, t := range objectTypes {
@@ -215,7 +270,7 @@ func (s *FsSuite) TestPackfileIter(c *C) {
idxf, err := dg.ObjectPackIdx(h)
c.Assert(err, IsNil)
- iter, err := NewPackfileIter(fs, f, idxf, t, false)
+ iter, err := NewPackfileIter(fs, f, idxf, t, false, 0)
c.Assert(err, IsNil)
err = iter.ForEach(func(o plumbing.EncodedObject) error {
@@ -298,7 +353,7 @@ func (s *FsSuite) TestPackfileIterKeepDescriptors(c *C) {
idxf, err := dg.ObjectPackIdx(h)
c.Assert(err, IsNil)
- iter, err := NewPackfileIter(fs, f, idxf, t, true)
+ iter, err := NewPackfileIter(fs, f, idxf, t, true, 0)
c.Assert(err, IsNil)
err = iter.ForEach(func(o plumbing.EncodedObject) error {
@@ -377,7 +432,7 @@ func BenchmarkPackfileIter(b *testing.B) {
b.Fatal(err)
}
- iter, err := NewPackfileIter(fs, f, idxf, t, false)
+ iter, err := NewPackfileIter(fs, f, idxf, t, false, 0)
if err != nil {
b.Fatal(err)
}
@@ -425,7 +480,7 @@ func BenchmarkPackfileIterReadContent(b *testing.B) {
b.Fatal(err)
}
- iter, err := NewPackfileIter(fs, f, idxf, t, false)
+ iter, err := NewPackfileIter(fs, f, idxf, t, false, 0)
if err != nil {
b.Fatal(err)
}
diff --git a/storage/filesystem/storage.go b/storage/filesystem/storage.go
index 8b69b27..7e7a2c5 100644
--- a/storage/filesystem/storage.go
+++ b/storage/filesystem/storage.go
@@ -34,6 +34,9 @@ type Options struct {
// MaxOpenDescriptors is the max number of file descriptors to keep
// open. If KeepDescriptors is true, all file descriptors will remain open.
MaxOpenDescriptors int
+ // LargeObjectThreshold maximum object size (in bytes) that will be read in to memory.
+ // If left unset or set to 0 there is no limit
+ LargeObjectThreshold int64
}
// NewStorage returns a new Storage backed by a given `fs.Filesystem` and cache.
generated by cgit (git 2.34.1) at 2024-09-20 17:23:12 +0000