Implement delimiter, path prefix

pkg/api/minioapi/api_test.go

@@ -28,6 +28,7 @@ import (
 	"testing"
 	"time"
 
+	mstorage "github.com/minio-io/minio/pkg/storage"
 	"github.com/minio-io/minio/pkg/storage/inmemory"
 	. "gopkg.in/check.v1"
 )
@@ -243,9 +244,13 @@ func (s *MySuite) TestPutObject(c *C) {
 	testServer := httptest.NewServer(httpHandler)
 	defer testServer.Close()
 
-	objects, isTruncated, err := storage.ListObjects("bucket", "", 1000)
+	resources := mstorage.BucketResourcesMetadata{}
+
+	resources.Maxkeys = 1000
+	resources.Prefix = ""
+	objects, resources, err := storage.ListObjects("bucket", resources)
 	c.Assert(len(objects), Equals, 0)
-	c.Assert(isTruncated, Equals, false)
+	c.Assert(resources.IsTruncated, Equals, false)
 	c.Assert(err, Not(IsNil))
 
 	date1 := time.Now()
@@ -268,9 +273,12 @@ func (s *MySuite) TestPutObject(c *C) {
 
 	date2 := time.Now()
 
-	objects, isTruncated, err = storage.ListObjects("bucket", "", 1000)
+	resources.Maxkeys = 1000
+	resources.Prefix = ""
+
+	objects, resources, err = storage.ListObjects("bucket", resources)
 	c.Assert(len(objects), Equals, 1)
-	c.Assert(isTruncated, Equals, false)
+	c.Assert(resources.IsTruncated, Equals, false)
 	c.Assert(err, IsNil)
 
 	var writer bytes.Buffer

pkg/api/minioapi/bucket_handlers.go

@@ -35,17 +35,17 @@ func (server *minioApi) listObjectsHandler(w http.ResponseWriter, req *http.Requ
 	bucket := vars["bucket"]
 
 	resources := getBucketResources(req.URL.Query())
-	if resources.policy == true {
+	if resources.Policy == true {
 		server.getBucketPolicyHandler(w, req)
 		return
 	}
 
 	acceptsContentType := getContentType(req)
-	objects, isTruncated, err := server.storage.ListObjects(bucket, resources.prefix, 1000)
+	objects, resources, err := server.storage.ListObjects(bucket, resources)
 	switch err := err.(type) {
 	case nil: // success
 		{
-			response := generateObjectsListResult(bucket, objects, isTruncated)
+			response := generateObjectsListResult(bucket, objects, resources.IsTruncated)
 			w.Write(writeObjectHeadersAndResponse(w, response, acceptsContentType))
 		}
 	case mstorage.BucketNotFound:
@@ -74,7 +74,7 @@ func (server *minioApi) listObjectsHandler(w http.ResponseWriter, req *http.Requ
 	case mstorage.ObjectNameInvalid:
 		{
 			error := errorCodeError(NoSuchKey)
-			errorResponse := getErrorResponse(error, resources.prefix)
+			errorResponse := getErrorResponse(error, resources.Prefix)
 			w.WriteHeader(error.HttpStatusCode)
 			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
 		}
@@ -122,7 +122,7 @@ func (server *minioApi) putBucketHandler(w http.ResponseWriter, req *http.Reques
 	err := server.storage.StoreBucket(bucket)
 
 	resources := getBucketResources(req.URL.Query())
-	if resources.policy == true {
+	if resources.Policy == true {
 		server.putBucketPolicyHandler(w, req)
 		return
 	}

pkg/api/minioapi/definitions.go

@@ -27,12 +27,17 @@ const (
 
 // Object list response format
 type ObjectListResponse struct {
-	XMLName     xml.Name `xml:"ListBucketResult" json:"-"`
-	Name        string
-	Marker      string
-	MaxKeys     int
-	IsTruncated bool
-	Contents    []*Item `xml:,innerxml`
+	XMLName        xml.Name `xml:"ListBucketResult" json:"-"`
+	Name           string
+	Prefix         string
+	Marker         string
+	MaxKeys        int
+	Delimiter      string
+	IsTruncated    bool
+	Contents       []*Item `xml:,innerxml`
+	CommonPrefixes struct {
+		Prefix string
+	} `xml:,innerxml`
 }
 
 // Bucket list response format

pkg/api/minioapi/object_handlers.go

@@ -130,7 +130,7 @@ func (server *minioApi) putObjectHandler(w http.ResponseWriter, req *http.Reques
 	object = vars["object"]
 
 	resources := getBucketResources(req.URL.Query())
-	if resources.policy == true && object == "" {
+	if resources.Policy == true && object == "" {
 		server.putBucketPolicyHandler(w, req)
 		return
 	}

pkg/api/minioapi/resources.go

@@ -19,32 +19,24 @@ package minioapi
 import (
 	"net/url"
 	"strconv"
-)
 
-// support bucket resources go here
-type bucketResources struct {
-	prefix    string
-	marker    string
-	maxkeys   int
-	policy    bool
-	delimiter string
-	//	uploads   bool - TODO implemented with multipart support
-}
+	mstorage "github.com/minio-io/minio/pkg/storage"
+)
 
 // parse bucket url queries
-func getBucketResources(values url.Values) (v bucketResources) {
+func getBucketResources(values url.Values) (v mstorage.BucketResourcesMetadata) {
 	for key, value := range values {
 		switch true {
 		case key == "prefix":
-			v.prefix = value[0]
+			v.Prefix = value[0]
 		case key == "marker":
-			v.marker = value[0]
-		case key == "maxkeys":
-			v.maxkeys, _ = strconv.Atoi(value[0])
+			v.Marker = value[0]
+		case key == "max-keys":
+			v.Maxkeys, _ = strconv.Atoi(value[0])
 		case key == "policy":
-			v.policy = true
+			v.Policy = true
 		case key == "delimiter":
-			v.delimiter = value[0]
+			v.Delimiter = value[0]
 		}
 	}
 	return

pkg/storage/fs/fs.go

@@ -23,6 +23,8 @@ import (
 	"io/ioutil"
 	"os"
 	"path"
+	"path/filepath"
+	"sort"
 	"strings"
 	"sync"
 
@@ -291,45 +293,96 @@ func (storage *storage) GetObjectMetadata(bucket string, object string) (mstorag
 	return metadata, nil
 }
 
-func (storage *storage) ListObjects(bucket, prefix string, count int) ([]mstorage.ObjectMetadata, bool, error) {
+type Path struct {
+	files map[string]os.FileInfo
+	root  string
+}
+
+func (p *Path) getAllFiles(path string, fl os.FileInfo, err error) error {
+	if err != nil {
+		return err
+	}
+	if fl.Mode().IsRegular() {
+		if strings.HasSuffix(path, "$metadata") {
+			return nil
+		}
+		_p := strings.Split(path, p.root+"/")
+		if len(_p) > 1 {
+			p.files[_p[1]] = fl
+		}
+	}
+	return nil
+}
+
+type ByObjectKey []mstorage.ObjectMetadata
+
+func (b ByObjectKey) Len() int           { return len(b) }
+func (b ByObjectKey) Swap(i, j int)      { b[i], b[j] = b[j], b[i] }
+func (b ByObjectKey) Less(i, j int) bool { return b[i].Key < b[j].Key }
+
+func (storage *storage) ListObjects(bucket string, resources mstorage.BucketResourcesMetadata) ([]mstorage.ObjectMetadata, mstorage.BucketResourcesMetadata, error) {
+	p := Path{}
+	p.files = make(map[string]os.FileInfo)
+
 	if mstorage.IsValidBucket(bucket) == false {
-		return []mstorage.ObjectMetadata{}, false, mstorage.BucketNameInvalid{Bucket: bucket}
+		return []mstorage.ObjectMetadata{}, resources, mstorage.BucketNameInvalid{Bucket: bucket}
 	}
-	if mstorage.IsValidObject(prefix) == false {
-		return []mstorage.ObjectMetadata{}, false, mstorage.ObjectNameInvalid{Bucket: bucket, Object: prefix}
+	if mstorage.IsValidObject(resources.Prefix) == false {
+		return []mstorage.ObjectMetadata{}, resources, mstorage.ObjectNameInvalid{Bucket: bucket, Object: resources.Prefix}
 	}
 
 	rootPrefix := path.Join(storage.root, bucket)
-
 	// check bucket exists
 	if _, err := os.Stat(rootPrefix); os.IsNotExist(err) {
-		return []mstorage.ObjectMetadata{}, false, mstorage.BucketNotFound{Bucket: bucket}
+		return []mstorage.ObjectMetadata{}, resources, mstorage.BucketNotFound{Bucket: bucket}
 	}
 
-	files, err := ioutil.ReadDir(rootPrefix)
+	p.root = rootPrefix
+	err := filepath.Walk(rootPrefix, p.getAllFiles)
 	if err != nil {
-		return []mstorage.ObjectMetadata{}, false, mstorage.EmbedError("bucket", "", err)
+		return []mstorage.ObjectMetadata{}, resources, mstorage.EmbedError(bucket, "", err)
 	}
 
 	var metadataList []mstorage.ObjectMetadata
-	for _, file := range files {
-		if !strings.HasSuffix(file.Name(), "$metadata") {
-			if len(metadataList) >= count {
-				return metadataList, true, nil
+	for name, file := range p.files {
+		if len(metadataList) >= resources.Maxkeys {
+			resources.IsTruncated = true
+			goto ret
+		}
+		// TODO handle resources.Marker
+		if resources.Delimiter != "" {
+			metadata := mstorage.ObjectMetadata{
+				Bucket:    bucket,
+				Maxkeys:   resources.Maxkeys,
+				Prefix:    resources.Prefix,
+				Marker:    resources.Marker,
+				Delimiter: resources.Delimiter,
 			}
-			if strings.HasPrefix(file.Name(), prefix) {
-				metadata := mstorage.ObjectMetadata{
-					Bucket:  bucket,
-					Key:     file.Name(),
-					Created: file.ModTime(),
-					Size:    file.Size(),
-					ETag:    bucket + "#" + file.Name(),
-				}
-				metadataList = append(metadataList, metadata)
+			metadataList = append(metadataList, metadata)
+		}
+		if resources.Delimiter != "" && strings.HasPrefix(name, resources.Prefix) {
+			metadata := mstorage.ObjectMetadata{}
+			metadataList = append(metadataList, metadata)
+		}
+		if strings.HasPrefix(name, resources.Prefix) {
+			metadata := mstorage.ObjectMetadata{
+				Bucket:    bucket,
+				Maxkeys:   resources.Maxkeys,
+				Prefix:    resources.Prefix,
+				Marker:    resources.Marker,
+				Delimiter: resources.Delimiter,
+				Key:       name,
+				Created:   file.ModTime(),
+				Size:      file.Size(),
+				ETag:      bucket + "#" + name,
 			}
+			metadataList = append(metadataList, metadata)
 		}
 	}
-	return metadataList, false, nil
+
+ret:
+	sort.Sort(ByObjectKey(metadataList))
+	return metadataList, resources, nil
 }
 
 func (storage *storage) StoreObject(bucket, key, contentType string, data io.Reader) error {

pkg/storage/inmemory/inmemory.go

@@ -128,31 +128,31 @@ func (storage *storage) StoreBucket(bucketName string) error {
 	return nil
 }
 
-func (storage *storage) ListObjects(bucket, prefix string, count int) ([]mstorage.ObjectMetadata, bool, error) {
+func (storage *storage) ListObjects(bucket string, resources mstorage.BucketResourcesMetadata) ([]mstorage.ObjectMetadata, mstorage.BucketResourcesMetadata, error) {
 	if _, ok := storage.bucketdata[bucket]; ok == false {
-		return []mstorage.ObjectMetadata{}, false, mstorage.BucketNotFound{Bucket: bucket}
+		return []mstorage.ObjectMetadata{}, mstorage.BucketResourcesMetadata{IsTruncated: false}, mstorage.BucketNotFound{Bucket: bucket}
 	}
 	// TODO prefix and count handling
 	var results []mstorage.ObjectMetadata
 	var keys []string
 	for key := range storage.objectdata {
-		if strings.HasPrefix(key, bucket+":"+prefix) {
+		if strings.HasPrefix(key, bucket+":"+resources.Prefix) {
 			keys = append(keys, key)
 		}
 	}
 	sort.Strings(keys)
 	for _, key := range keys {
-		if len(results) == count {
-			return results, true, nil
+		if len(results) == resources.Maxkeys {
+			return results, mstorage.BucketResourcesMetadata{IsTruncated: true}, nil
 		}
 		object := storage.objectdata[key]
 		if bucket == object.metadata.Bucket {
-			if strings.HasPrefix(key, bucket+":") {
+			if strings.HasPrefix(key, bucket+":"+resources.Prefix) {
 				results = append(results, object.metadata)
 			}
 		}
 	}
-	return results, false, nil
+	return results, resources, nil
 }
 
 type ByBucketName []mstorage.BucketMetadata

pkg/storage/storage.go

@@ -32,7 +32,7 @@ type Storage interface {
 	// Object Operations
 	CopyObjectToWriter(w io.Writer, bucket string, object string) (int64, error)
 	GetObjectMetadata(bucket string, object string) (ObjectMetadata, error)
-	ListObjects(bucket, prefix string, count int) ([]ObjectMetadata, bool, error)
+	ListObjects(bucket string, resources BucketResourcesMetadata) ([]ObjectMetadata, BucketResourcesMetadata, error)
 	StoreObject(bucket string, key string, contentType string, data io.Reader) error
 }
 
@@ -42,8 +42,12 @@ type BucketMetadata struct {
 }
 
 type ObjectMetadata struct {
-	Bucket string
-	Key    string
+	Bucket    string
+	Key       string
+	Maxkeys   int
+	Prefix    string
+	Marker    string
+	Delimiter string
 
 	ContentType string
 	Created     time.Time
@@ -51,6 +55,21 @@ type ObjectMetadata struct {
 	Size        int64
 }
 
+// Various types of bucket resources
+type BucketResourcesMetadata struct {
+	Prefix         string
+	Marker         string
+	Maxkeys        int
+	Delimiter      string
+	IsTruncated    bool
+	CommonPrefixes []string
+
+	Policy bool
+	// TODO
+	Logging      string
+	Notification string
+}
+
 func IsValidBucket(bucket string) bool {
 	if len(bucket) < 3 || len(bucket) > 63 {
 		return false

pkg/storage/storage_api_suite.go

@@ -81,40 +81,46 @@ func testMultipleObjectCreation(c *C, create func() Storage) {
 func testPaging(c *C, create func() Storage) {
 	storage := create()
 	storage.StoreBucket("bucket")
-	storage.ListObjects("bucket", "", 5)
-	objects, isTruncated, err := storage.ListObjects("bucket", "", 5)
+	resources := BucketResourcesMetadata{}
+	objects, resources, err := storage.ListObjects("bucket", resources)
 	c.Assert(len(objects), Equals, 0)
-	c.Assert(isTruncated, Equals, false)
+	c.Assert(resources.IsTruncated, Equals, false)
 	c.Assert(err, IsNil)
 	// check before paging occurs
 	for i := 0; i < 5; i++ {
 		key := "obj" + strconv.Itoa(i)
 		storage.StoreObject("bucket", key, "", bytes.NewBufferString(key))
-		objects, isTruncated, err = storage.ListObjects("bucket", "", 5)
+		resources.Maxkeys = 5
+		objects, resources, err = storage.ListObjects("bucket", resources)
 		c.Assert(len(objects), Equals, i+1)
-		c.Assert(isTruncated, Equals, false)
+		c.Assert(resources.IsTruncated, Equals, false)
 		c.Assert(err, IsNil)
 	}
 	// check after paging occurs pages work
 	for i := 6; i <= 10; i++ {
 		key := "obj" + strconv.Itoa(i)
 		storage.StoreObject("bucket", key, "", bytes.NewBufferString(key))
-		objects, isTruncated, err = storage.ListObjects("bucket", "", 5)
+		resources.Maxkeys = 5
+		objects, resources, err = storage.ListObjects("bucket", resources)
 		c.Assert(len(objects), Equals, 5)
-		c.Assert(isTruncated, Equals, true)
+		c.Assert(resources.IsTruncated, Equals, true)
 		c.Assert(err, IsNil)
 	}
 	// check paging with prefix at end returns less objects
 	{
 		storage.StoreObject("bucket", "newPrefix", "", bytes.NewBufferString("prefix1"))
 		storage.StoreObject("bucket", "newPrefix2", "", bytes.NewBufferString("prefix2"))
-		objects, isTruncated, err = storage.ListObjects("bucket", "new", 5)
+		resources.Prefix = "new"
+		resources.Maxkeys = 5
+		objects, resources, err = storage.ListObjects("bucket", resources)
 		c.Assert(len(objects), Equals, 2)
 	}
 
 	// check ordering of pages
 	{
-		objects, isTruncated, err = storage.ListObjects("bucket", "", 5)
+		resources.Prefix = ""
+		resources.Maxkeys = 1000
+		objects, resources, err = storage.ListObjects("bucket", resources)
 		c.Assert(objects[0].Key, Equals, "newPrefix")
 		c.Assert(objects[1].Key, Equals, "newPrefix2")
 		c.Assert(objects[2].Key, Equals, "obj0")
@@ -123,7 +129,9 @@ func testPaging(c *C, create func() Storage) {
 	}
 	// check ordering of results with prefix
 	{
-		objects, isTruncated, err = storage.ListObjects("bucket", "obj", 5)
+		resources.Prefix = "obj"
+		resources.Maxkeys = 1000
+		objects, resources, err = storage.ListObjects("bucket", resources)
 		c.Assert(objects[0].Key, Equals, "obj0")
 		c.Assert(objects[1].Key, Equals, "obj1")
 		c.Assert(objects[2].Key, Equals, "obj10")
@@ -132,7 +140,9 @@ func testPaging(c *C, create func() Storage) {
 	}
 	// check ordering of results with prefix and no paging
 	{
-		objects, isTruncated, err = storage.ListObjects("bucket", "new", 5)
+		resources.Prefix = "new"
+		resources.Maxkeys = 5
+		objects, resources, err = storage.ListObjects("bucket", resources)
 		c.Assert(objects[0].Key, Equals, "newPrefix")
 		c.Assert(objects[1].Key, Equals, "newPrefix2")
 	}
@@ -230,9 +240,10 @@ func testListBucketsOrder(c *C, create func() Storage) {
 
 func testListObjectsTestsForNonExistantBucket(c *C, create func() Storage) {
 	storage := create()
-	objects, isTruncated, err := storage.ListObjects("bucket", "", 1000)
+	resources := BucketResourcesMetadata{Prefix: "", Maxkeys: 1000}
+	objects, resources, err := storage.ListObjects("bucket", resources)
 	c.Assert(err, Not(IsNil))
-	c.Assert(isTruncated, Equals, false)
+	c.Assert(resources.IsTruncated, Equals, false)
 	c.Assert(len(objects), Equals, 0)
 }
 

pkg/utils/crypto/sha256/sha256.go

@@ -7,7 +7,7 @@
 // Using this part of Minio codebase under the license
 // Apache License Version 2.0 with modifications
 
-// Package sha256 SHA256SSE3, SHA256AVX, SHA256AVX2
+// Package sha256 provides SHA256SSE3, SHA256AVX, SHA256AVX2
 package sha256
 
 import (