Fix some donut TODO's regarding bucket created date

pkg/storage/donut/donut_public_interfaces.go

@@ -31,7 +31,7 @@ type ObjectStorage interface {
 	// Storage service Operations
 	GetBucketMetadata(bucket string) (map[string]string, error)
 	SetBucketMetadata(bucket string, metadata map[string]string) error
-	ListBuckets() ([]string, error)
+	ListBuckets() (map[string]map[string]string, error)
 	MakeBucket(bucket, acl string) error
 
 	// Bucket Operations

pkg/storage/donut/donut_test.go

@@ -62,9 +62,9 @@ func (s *MySuite) TestEmptyDonut(c *C) {
 	c.Assert(err, IsNil)
 
 	// check donut is empty
-	buckets, err := donut.ListBuckets()
+	metadata, err := donut.ListBuckets()
 	c.Assert(err, IsNil)
-	c.Assert(buckets, IsNil)
+	c.Assert(len(metadata), Equals, 0)
 }
 
 // test make bucket without name
@@ -112,7 +112,8 @@ func (s *MySuite) TestMakeBucketAndList(c *C) {
 	// check bucket exists
 	buckets, err := donut.ListBuckets()
 	c.Assert(err, IsNil)
-	c.Assert(buckets, DeepEquals, []string{"foo"})
+	c.Assert(len(buckets), Equals, 1)
+	c.Assert(buckets["foo"]["acl"], Equals, "private")
 }
 
 // test re-create bucket
@@ -145,14 +146,19 @@ func (s *MySuite) TestCreateMultipleBucketsAndList(c *C) {
 
 	buckets, err := donut.ListBuckets()
 	c.Assert(err, IsNil)
-	c.Assert(buckets, DeepEquals, []string{"bar", "foo"})
+
+	_, ok := buckets["foo"]
+	c.Assert(ok, Equals, true)
+	_, ok = buckets["bar"]
+	c.Assert(ok, Equals, true)
 
 	err = donut.MakeBucket("foobar", "private")
 	c.Assert(err, IsNil)
 
 	buckets, err = donut.ListBuckets()
 	c.Assert(err, IsNil)
-	c.Assert(buckets, DeepEquals, []string{"bar", "foo", "foobar"})
+	_, ok = buckets["foobar"]
+	c.Assert(ok, Equals, true)
 }
 
 // test object create without bucket

pkg/storage/donut/objectstorage.go

@@ -19,7 +19,6 @@ package donut
 import (
 	"errors"
 	"io"
-	"os"
 	"sort"
 	"strconv"
 	"strings"
@@ -69,25 +68,20 @@ func (d donut) SetBucketMetadata(bucket string, bucketMetadata map[string]string
 }
 
 // ListBuckets - return list of buckets
-func (d donut) ListBuckets() (results []string, err error) {
+func (d donut) ListBuckets() (metadata map[string]map[string]string, err error) {
 	err = d.getDonutBuckets()
 	if err != nil {
 		return nil, iodine.New(err, nil)
 	}
-	metadata, err := d.getDonutBucketMetadata()
+	dummyMetadata := make(map[string]map[string]string)
+	metadata, err = d.getDonutBucketMetadata()
 	if err != nil {
-		err = iodine.ToError(err)
-		if os.IsNotExist(err) {
-			// valid case
-			return nil, nil
+		// intentionally left out the error when Donut is empty
+		// but we need to revisit this area in future - since we need
+		// to figure out between acceptable and unacceptable errors
+		return dummyMetadata, nil
 	}
-		return nil, iodine.New(err, nil)
-	}
-	for name := range metadata {
-		results = append(results, name)
-	}
-	sort.Strings(results)
-	return results, nil
+	return metadata, nil
 }
 
 // ListObjects - return list of objects

pkg/storage/drivers/donut/donut.go

@@ -134,11 +134,14 @@ func (d donutDriver) ListBuckets() (results []drivers.BucketMetadata, err error)
 	if err != nil {
 		return nil, err
 	}
-	for _, name := range buckets {
+	for name, metadata := range buckets {
+		created, err := time.Parse(time.RFC3339Nano, metadata["created"])
+		if err != nil {
+			return nil, iodine.New(err, nil)
+		}
 		result := drivers.BucketMetadata{
 			Name:    name,
-			// TODO Add real created date
-			Created: time.Now().UTC(),
+			Created: created,
 		}
 		results = append(results, result)
 	}