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-rw-r--r--largeobject.go13
-rw-r--r--object.go4
-rw-r--r--tests/largeobject_test.go195
3 files changed, 208 insertions, 4 deletions
diff --git a/largeobject.go b/largeobject.go
index a39b6c0..7771366 100644
--- a/largeobject.go
+++ b/largeobject.go
@@ -188,7 +188,15 @@ func (lo *LargeObject) Segments() ([]SegmentInfo, error) {
return lo.segments, nil
}
-func (lo *LargeObject) segmentObjects() []*Object {
+//SegmentObjects returns a list of all segment objects referenced by this large
+//object. Note that, in general,
+//
+// len(lo.SegmentObjects()) <= len(lo.Segments())
+//
+//since one object may be backing multiple segments, and data segments are not
+//backed by any object at all. No guarantee is made about the order in which
+//objects appear in this list.
+func (lo *LargeObject) SegmentObjects() []*Object {
seen := make(map[string]bool)
result := make([]*Object, 0, len(lo.segments))
for _, segment := range lo.segments {
@@ -415,6 +423,7 @@ func (o *Object) AsNewLargeObject(sopts SegmentingOptions, topts *TruncateOption
}
case ErrNotLarge:
//not an error, continue down below
+ err = nil
default:
return nil, err //unexpected error
}
@@ -469,7 +478,7 @@ type TruncateOptions struct {
//not written by this call, so WriteManifest() usually needs to be called
//afterwards.
func (lo *LargeObject) Truncate(opts *TruncateOptions) error {
- _, _, err := lo.object.c.a.BulkDelete(lo.segmentObjects(), nil, nil)
+ _, _, err := lo.object.c.a.BulkDelete(lo.SegmentObjects(), nil, nil)
if err == nil {
lo.segments = nil
}
diff --git a/object.go b/object.go
index 1aa035a..cd5c1c9 100644
--- a/object.go
+++ b/object.go
@@ -245,7 +245,7 @@ func (o *Object) Upload(content io.Reader, opts *UploadOptions, ropts *RequestOp
}
if opts.DeleteSegments && lo != nil {
- _, _, err := lo.object.c.a.BulkDelete(lo.segmentObjects(), nil, nil)
+ _, _, err := lo.object.c.a.BulkDelete(lo.SegmentObjects(), nil, nil)
if err != nil {
return err
}
@@ -362,7 +362,7 @@ func (o *Object) Delete(opts *DeleteOptions, ropts *RequestOptions) error {
switch err {
case nil:
//is large object - delete segments and the object itself in one step
- _, _, err := o.c.a.BulkDelete(append(lo.segmentObjects(), o), nil, nil)
+ _, _, err := o.c.a.BulkDelete(append(lo.SegmentObjects(), o), nil, nil)
o.Invalidate()
return err
case ErrNotLarge:
diff --git a/tests/largeobject_test.go b/tests/largeobject_test.go
index 3e41cb3..a8c18e6 100644
--- a/tests/largeobject_test.go
+++ b/tests/largeobject_test.go
@@ -139,6 +139,47 @@ func TestLargeObjectsBasic(t *testing.T) {
})
}
+func TestTruncateDuringOverwrite(t *testing.T) {
+ foreachLargeObjectStrategy(func(strategy schwift.LargeObjectStrategy, strategyStr string) {
+ testWithContainer(t, func(c *schwift.Container) {
+ obj := c.Object("largeobject")
+
+ //setup phase: create a large object
+ lo, err := obj.AsNewLargeObject(schwift.SegmentingOptions{
+ SegmentContainer: c,
+ SegmentPrefix: "segments/",
+ Strategy: strategy,
+ }, nil)
+ expectSuccess(t, err)
+
+ segment1 := getRandomSegmentContent(128)
+ segment2 := getRandomSegmentContent(128)
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment1)), 0))
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment2)), 0))
+ expectSuccess(t, lo.WriteManifest(nil))
+
+ expectObjectExistence(t, c.Object("segments/0000000000000001"), true)
+ expectObjectExistence(t, c.Object("segments/0000000000000002"), true)
+
+ //test phase: truncate using AsNewLargeObject
+ lo, err = obj.AsNewLargeObject(schwift.SegmentingOptions{
+ SegmentContainer: c,
+ Strategy: strategy,
+ }, &schwift.TruncateOptions{
+ DeleteSegments: true,
+ })
+ expectSuccess(t, err)
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment1)), 0))
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment2)), 0))
+ expectSuccess(t, lo.WriteManifest(nil))
+
+ expectObjectExistence(t, c.Object("segments/0000000000000001"), false)
+ expectObjectExistence(t, c.Object("segments/0000000000000002"), false)
+
+ })
+ })
+}
+
func TestOpenRegularObjectAsLargeObject(t *testing.T) {
testWithContainer(t, func(c *schwift.Container) {
o := c.Object("foo")
@@ -181,6 +222,12 @@ func TestSLOWithDataSegment(t *testing.T) {
Etag: etagOfString(segment2),
},
})
+
+ //check that truncating this does not try to delete the nil segment.Object
+ //in the data segment
+ expectSuccess(t, lo.Truncate(&schwift.TruncateOptions{
+ DeleteSegments: true,
+ }))
})
}
@@ -332,6 +379,154 @@ func TestDeleteLargeObjectIncludingSegments(t *testing.T) {
})
}
+func TestOverwriteLargeObjectAndKeepSegments(t *testing.T) {
+ foreachLargeObjectStrategy(func(strategy schwift.LargeObjectStrategy, strategyStr string) {
+ testWithContainer(t, func(c *schwift.Container) {
+ obj := c.Object("largeobject")
+
+ //setup phase: create a large object
+ lo, err := obj.AsNewLargeObject(schwift.SegmentingOptions{
+ SegmentContainer: c,
+ SegmentPrefix: "foo/bar/baz/",
+ Strategy: strategy,
+ }, nil)
+ expectSuccess(t, err)
+
+ segment1 := getRandomSegmentContent(128)
+ segment2 := getRandomSegmentContent(128)
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment1)), 0))
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment2)), 0))
+ expectSuccess(t, lo.WriteManifest(nil))
+
+ //test overwriting that keeps segments
+ expectSuccess(t, obj.Upload(bytes.NewReader(objectExampleContent), nil, nil))
+
+ iter := c.Objects()
+ iter.Prefix = lo.SegmentPrefix()
+ names, err := iter.Collect()
+ expectSuccess(t, err)
+ expectObjectNames(t, names,
+ "foo/bar/baz/0000000000000001",
+ "foo/bar/baz/0000000000000002")
+ })
+ })
+}
+
+func TestOverwriteLargeObjectIncludingSegments(t *testing.T) {
+ foreachLargeObjectStrategy(func(strategy schwift.LargeObjectStrategy, strategyStr string) {
+ testWithContainer(t, func(c *schwift.Container) {
+ obj := c.Object("largeobject")
+
+ //setup phase: create a large object
+ lo, err := obj.AsNewLargeObject(schwift.SegmentingOptions{
+ SegmentContainer: c,
+ SegmentPrefix: "foo/bar/baz/",
+ Strategy: strategy,
+ }, nil)
+ expectSuccess(t, err)
+
+ segment1 := getRandomSegmentContent(128)
+ segment2 := getRandomSegmentContent(128)
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment1)), 0))
+ expectSuccess(t, lo.Append(bytes.NewReader([]byte(segment2)), 0))
+ expectSuccess(t, lo.WriteManifest(nil))
+
+ //test overwriting that deletes segments
+ expectSuccess(t, obj.Upload(
+ bytes.NewReader(objectExampleContent),
+ &schwift.UploadOptions{DeleteSegments: true},
+ nil,
+ ))
+
+ iter := c.Objects()
+ iter.Prefix = lo.SegmentPrefix()
+ names, err := iter.Collect()
+ expectSuccess(t, err)
+ expectObjectNames(t, names)
+
+ //test overwriting that wants to delete segments, but there aren't any
+ expectSuccess(t, obj.Upload(
+ bytes.NewReader(objectExampleContent),
+ &schwift.UploadOptions{DeleteSegments: true},
+ nil,
+ ))
+
+ //while we're at it, test the same for deletion
+ expectSuccess(t, obj.Delete(
+ &schwift.DeleteOptions{DeleteSegments: true},
+ nil,
+ ))
+ })
+ })
+}
+
+func TestAddInvalidSegments(t *testing.T) {
+ foreachLargeObjectStrategy(func(strategy schwift.LargeObjectStrategy, strategyStr string) {
+ testWithContainer(t, func(c *schwift.Container) {
+ obj := c.Object("largeobject")
+ lo, err := obj.AsNewLargeObject(schwift.SegmentingOptions{
+ SegmentContainer: c,
+ Strategy: strategy,
+ }, nil)
+ expectSuccess(t, err)
+
+ //must have either backing object or data
+ expectError(t, lo.AddSegment(schwift.SegmentInfo{
+ Object: nil,
+ Data: nil,
+ }), schwift.ErrSegmentInvalid.Error())
+
+ //if data segment, must not have any other attribute
+ expectError(t, lo.AddSegment(schwift.SegmentInfo{
+ Data: []byte("foo"),
+ Object: obj,
+ }), schwift.ErrSegmentInvalid.Error())
+ expectError(t, lo.AddSegment(schwift.SegmentInfo{
+ Data: []byte("foo"),
+ SizeBytes: 3,
+ }), schwift.ErrSegmentInvalid.Error())
+ expectError(t, lo.AddSegment(schwift.SegmentInfo{
+ Data: []byte("foo"),
+ Etag: etagOfString("foo"),
+ }), schwift.ErrSegmentInvalid.Error())
+ expectError(t, lo.AddSegment(schwift.SegmentInfo{
+ Data: []byte("foo"),
+ RangeOffset: 2,
+ }), schwift.ErrSegmentInvalid.Error())
+ expectError(t, lo.AddSegment(schwift.SegmentInfo{
+ Data: []byte("foo"),
+ RangeLength: 1,
+ }), schwift.ErrSegmentInvalid.Error())
+
+ //malformed range
+ expectError(t, lo.AddSegment(schwift.SegmentInfo{
+ Object: obj,
+ RangeOffset: -1,
+ RangeLength: 0,
+ }), schwift.ErrSegmentInvalid.Error())
+
+ //DLO is strict about the SegmentContainer and SegmentPrefix, but SLO accepts it
+ c2 := c.Account().Container("foo")
+ err = lo.AddSegment(schwift.SegmentInfo{
+ Object: c2.Object("foo"),
+ })
+ if strategy == schwift.DynamicLargeObject {
+ expectError(t, err, schwift.ErrContainerMismatch.Error())
+ } else {
+ expectSuccess(t, err)
+ }
+ err = lo.AddSegment(schwift.SegmentInfo{
+ Object: c.Object("definitely-not-in-the-segment-prefix"),
+ })
+ if strategy == schwift.DynamicLargeObject {
+ expectError(t, err, schwift.ErrContainerMismatch.Error())
+ } else {
+ expectSuccess(t, err)
+ }
+ })
+ })
+}
+
////////////////////////////////////////////////////////////////////////////////
// helpers
generated by cgit v1.2.3 (git 2.25.1) at 2026-06-08 14:44:31 +0000