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dfstore.go
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dfstore.go
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/*
* Copyright 2022 The Dragonfly Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//go:generate mockgen -destination mocks/dfstore_mock.go -source dfstore.go -package mocks
package dfstore
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"io"
"mime/multipart"
"net/http"
"net/url"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/go-http-utils/headers"
"d7y.io/dragonfly/v2/client/config"
"d7y.io/dragonfly/v2/client/daemon/objectstorage"
pkgobjectstorage "d7y.io/dragonfly/v2/pkg/objectstorage"
)
const (
// DefaultGetObjectMetadatasLimit is the default limit of get object metadatas.
DefaultGetObjectMetadatasLimit = 1000
// MaxGetObjectMetadatasLimit is the max limit of get object metadatas.
MaxGetObjectMetadatasLimit = 1000
// DefaultPutObjectBufferSize is the buffer size of io.CopyBuffer
DefaultPutObjectBufferSize = 64 * 1024 * 1024
)
// Dfstore is the interface used for object storage.
type Dfstore interface {
// CreateBucketRequestWithContext returns *http.Request of create bucket.
CreateBucketRequestWithContext(ctx context.Context, input *CreateBucketInput) (*http.Request, error)
// CreateBucket creates bucket.
CreateBucketWithContext(ctx context.Context, input *CreateBucketInput) error
// GetObjectMetadataRequestWithContext returns *http.Request of getting object metadata.
GetObjectMetadataRequestWithContext(ctx context.Context, input *GetObjectMetadataInput) (*http.Request, error)
// GetObjectMetadataWithContext returns metadata of object.
GetObjectMetadataWithContext(ctx context.Context, input *GetObjectMetadataInput) (*pkgobjectstorage.ObjectMetadata, error)
// GetObjectRequestWithContext returns *http.Request of getting object.
GetObjectRequestWithContext(ctx context.Context, input *GetObjectInput) (*http.Request, error)
// GetObjectWithContext returns data of object.
GetObjectWithContext(ctx context.Context, input *GetObjectInput) (io.ReadCloser, error)
// GetObjectMetadatasRequestWithContext returns *http.Request of getting object metadatas.
GetObjectMetadatasRequestWithContext(ctx context.Context, input *GetObjectMetadatasInput) (*http.Request, error)
// GetObjectMetadatasWithContext returns list of object metadatas.
GetObjectMetadatasWithContext(ctx context.Context, input *GetObjectMetadatasInput) (*pkgobjectstorage.ObjectMetadatas, error)
// PutObjectRequestWithContext returns *http.Request of putting object.
PutObjectRequestWithContext(ctx context.Context, input *PutObjectInput) (*http.Request, error)
// PutObjectWithContext puts data of object.
PutObjectWithContext(ctx context.Context, input *PutObjectInput) error
// CopyObjectRequestWithContext returns *http.Request of copying object.
CopyObjectRequestWithContext(ctx context.Context, input *CopyObjectInput) (*http.Request, error)
// CopyObjectWithContext copy object from source to destination.
CopyObjectWithContext(ctx context.Context, input *CopyObjectInput) error
// DeleteObjectRequestWithContext returns *http.Request of deleting object.
DeleteObjectRequestWithContext(ctx context.Context, input *DeleteObjectInput) (*http.Request, error)
// DeleteObjectWithContext deletes data of object.
DeleteObjectWithContext(ctx context.Context, input *DeleteObjectInput) error
// IsObjectExistRequestWithContext returns *http.Request of heading object.
IsObjectExistRequestWithContext(ctx context.Context, input *IsObjectExistInput) (*http.Request, error)
// IsObjectExistWithContext returns whether the object exists.
IsObjectExistWithContext(ctx context.Context, input *IsObjectExistInput) (bool, error)
}
// dfstore provides object storage function.
type dfstore struct {
endpoint string
httpClient *http.Client
}
// Option is a functional option for configuring the dfstore.
type Option func(dfs *dfstore)
// WithHTTPClient set http client for dfstore.
func WithHTTPClient(client *http.Client) Option {
return func(dfs *dfstore) {
dfs.httpClient = client
}
}
// New dfstore instance.
func New(endpoint string, options ...Option) Dfstore {
dfs := &dfstore{
endpoint: endpoint,
httpClient: http.DefaultClient,
}
for _, opt := range options {
opt(dfs)
}
return dfs
}
// GetObjectMetadataInput is used to construct request of getting object metadata.
type GetObjectMetadataInput struct {
// BucketName is bucket name.
BucketName string
// ObjectKey is object key.
ObjectKey string
}
// Validate validates GetObjectMetadataInput fields.
func (i *GetObjectMetadataInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
if i.ObjectKey == "" {
return errors.New("invalid ObjectKey")
}
return nil
}
// GetObjectMetadataRequestWithContext returns *http.Request of getting object metadata.
func (dfs *dfstore) GetObjectMetadataRequestWithContext(ctx context.Context, input *GetObjectMetadataInput) (*http.Request, error) {
if err := input.Validate(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName, "objects", input.ObjectKey)
if strings.HasSuffix(input.ObjectKey, "/") {
u.Path += "/"
}
req, err := http.NewRequestWithContext(ctx, http.MethodHead, u.String(), nil)
if err != nil {
return nil, err
}
return req, nil
}
// GetObjectMetadataWithContext returns metadata of object.
func (dfs *dfstore) GetObjectMetadataWithContext(ctx context.Context, input *GetObjectMetadataInput) (*pkgobjectstorage.ObjectMetadata, error) {
req, err := dfs.GetObjectMetadataRequestWithContext(ctx, input)
if err != nil {
return nil, err
}
resp, err := dfs.httpClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode/100 != 2 {
return nil, fmt.Errorf("bad response status %s", resp.Status)
}
contentLength, err := strconv.ParseInt(resp.Header.Get(headers.ContentLength), 10, 64)
if err != nil {
return nil, err
}
lastModifiedTime, err := time.Parse(http.TimeFormat, resp.Header.Get(config.HeaderDragonflyObjectMetaLastModifiedTime))
if err != nil {
return nil, err
}
return &pkgobjectstorage.ObjectMetadata{
ContentDisposition: resp.Header.Get(headers.ContentDisposition),
ContentEncoding: resp.Header.Get(headers.ContentEncoding),
ContentLanguage: resp.Header.Get(headers.ContentLanguage),
ContentLength: int64(contentLength),
ContentType: resp.Header.Get(headers.ContentType),
ETag: resp.Header.Get(headers.ContentType),
Digest: resp.Header.Get(config.HeaderDragonflyObjectMetaDigest),
LastModifiedTime: lastModifiedTime,
StorageClass: resp.Header.Get(config.HeaderDragonflyObjectMetaStorageClass),
}, nil
}
// GetObjectMetadatasInput is used to construct request of getting object metadatas.
type GetObjectMetadatasInput struct {
// BucketName is the bucket name.
BucketName string
// Prefix filters the objects by their key's prefix.
Prefix string
// Marker is used for pagination, indicating the object key to start listing from.
Marker string
// Delimiter is used to create a hierarchical structure, simulating directories in the listing results.
Delimiter string
// Limit specifies the maximum number of objects to be returned in a single listing request.
Limit int64
}
// Convert converts GetObjectMetadatasInput fields.
func (i *GetObjectMetadatasInput) Convert() {
if i.Limit == 0 {
i.Limit = DefaultGetObjectMetadatasLimit
}
if i.Limit > MaxGetObjectMetadatasLimit {
i.Limit = DefaultGetObjectMetadatasLimit
}
}
// Validate validates GetObjectMetadatasInput fields.
func (i *GetObjectMetadatasInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
if i.Limit <= 0 {
return errors.New("invalid limit")
}
return nil
}
// GetObjectMetadatasRequestWithContext returns *http.Request of getting object metadatas.
func (dfs *dfstore) GetObjectMetadatasRequestWithContext(ctx context.Context, input *GetObjectMetadatasInput) (*http.Request, error) {
// Convert input fields.
input.Convert()
if err := input.Validate(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName, "metadatas")
query := u.Query()
if input.Prefix != "" {
query.Set("prefix", input.Prefix)
}
if input.Marker != "" {
query.Set("marker", input.Marker)
}
if input.Delimiter != "" {
query.Set("delimiter", input.Delimiter)
}
if input.Limit != 0 {
query.Set("limit", fmt.Sprint(input.Limit))
}
u.RawQuery = query.Encode()
req, err := http.NewRequestWithContext(ctx, http.MethodGet, u.String(), nil)
if err != nil {
return nil, err
}
return req, nil
}
// GetObjectMetadatasWithContext returns *http.Request of getting object metadatas.
func (dfs *dfstore) GetObjectMetadatasWithContext(ctx context.Context, input *GetObjectMetadatasInput) (*pkgobjectstorage.ObjectMetadatas, error) {
req, err := dfs.GetObjectMetadatasRequestWithContext(ctx, input)
if err != nil {
return nil, err
}
resp, err := dfs.httpClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode/100 != 2 {
return nil, fmt.Errorf("bad response status %s", resp.Status)
}
var metadatas pkgobjectstorage.ObjectMetadatas
if err := json.NewDecoder(resp.Body).Decode(&metadatas); err != nil {
return nil, err
}
return &metadatas, nil
}
// GetObjectInput is used to construct request of getting object.
type GetObjectInput struct {
// BucketName is bucket name.
BucketName string
// ObjectKey is object key.
ObjectKey string
// Filter is used to generate a unique Task ID by
// filtering unnecessary query params in the URL,
// it is separated by & character.
Filter string
// Range is the HTTP range header.
Range string
}
// Validate validates GetObjectInput fields.
func (i *GetObjectInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
if i.ObjectKey == "" {
return errors.New("invalid ObjectKey")
}
return nil
}
// GetObjectRequestWithContext returns *http.Request of getting object.
func (dfs *dfstore) GetObjectRequestWithContext(ctx context.Context, input *GetObjectInput) (*http.Request, error) {
if err := input.Validate(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName, "objects", input.ObjectKey)
if strings.HasSuffix(input.ObjectKey, "/") {
u.Path += "/"
}
query := u.Query()
if input.Filter != "" {
query.Set("filter", input.Filter)
}
u.RawQuery = query.Encode()
req, err := http.NewRequestWithContext(ctx, http.MethodGet, u.String(), nil)
if err != nil {
return nil, err
}
if input.Range != "" {
req.Header.Set(headers.Range, input.Range)
}
return req, nil
}
// GetObjectWithContext returns data of object.
func (dfs *dfstore) GetObjectWithContext(ctx context.Context, input *GetObjectInput) (io.ReadCloser, error) {
req, err := dfs.GetObjectRequestWithContext(ctx, input)
if err != nil {
return nil, err
}
resp, err := dfs.httpClient.Do(req)
if err != nil {
return nil, err
}
if resp.StatusCode/100 != 2 {
return nil, fmt.Errorf("bad response status %s", resp.Status)
}
return resp.Body, nil
}
// PutObjectInput is used to construct request of putting object.
type PutObjectInput struct {
// BucketName is bucket name.
BucketName string
// ObjectKey is object key.
ObjectKey string
// Filter is used to generate a unique Task ID by
// filtering unnecessary query params in the URL,
// it is separated by & character.
Filter string
// Mode is the mode in which the backend is written,
// including WriteBack and AsyncWriteBack.
Mode int
// MaxReplicas is the maximum number of
// replicas of an object cache in seed peers.
MaxReplicas int
// Reader is reader of object.
Reader io.Reader
}
// Validate validates PutObjectInput fields.
func (i *PutObjectInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
if i.ObjectKey == "" {
return errors.New("invalid ObjectKey")
}
if i.Mode != objectstorage.WriteBack && i.Mode != objectstorage.AsyncWriteBack {
return errors.New("invalid Mode")
}
if i.MaxReplicas < 0 || i.MaxReplicas > 100 {
return errors.New("invalid MaxReplicas")
}
return nil
}
// PutObjectRequestWithContext returns *http.Request of putting object.
func (dfs *dfstore) PutObjectRequestWithContext(ctx context.Context, input *PutObjectInput) (*http.Request, error) {
if err := input.Validate(); err != nil {
return nil, err
}
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
// AsyncWriteBack mode is used by default.
if err := writer.WriteField("mode", fmt.Sprint(input.Mode)); err != nil {
return nil, err
}
if input.Filter != "" {
if err := writer.WriteField("filter", input.Filter); err != nil {
return nil, err
}
}
if input.MaxReplicas > 0 {
if err := writer.WriteField("maxReplicas", fmt.Sprint(input.MaxReplicas)); err != nil {
return nil, err
}
}
part, err := writer.CreateFormFile("file", filepath.Base(input.ObjectKey))
if err != nil {
return nil, err
}
buf := make([]byte, DefaultPutObjectBufferSize)
if _, err := io.CopyBuffer(part, input.Reader, buf); err != nil {
return nil, err
}
if err := writer.Close(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName, "objects", input.ObjectKey)
if strings.HasSuffix(input.ObjectKey, "/") {
u.Path += "/"
}
req, err := http.NewRequestWithContext(ctx, http.MethodPut, u.String(), body)
if err != nil {
return nil, err
}
req.Header.Add(headers.ContentType, writer.FormDataContentType())
return req, nil
}
// PutObjectWithContext puts data of object.
func (dfs *dfstore) PutObjectWithContext(ctx context.Context, input *PutObjectInput) error {
req, err := dfs.PutObjectRequestWithContext(ctx, input)
if err != nil {
return err
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode/100 != 2 {
return fmt.Errorf("bad response status %s", resp.Status)
}
return nil
}
// CopyObjectInput is used to construct request of copying object.
type CopyObjectInput struct {
// BucketName is bucket name.
BucketName string
// SourceObjectKey is the key of object to be copied.
SourceObjectKey string
// DestinationObjectKey is the object key of the destination.
DestinationObjectKey string
}
// Validate validates CopyObjectInput fields.
func (i *CopyObjectInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
if i.SourceObjectKey == "" {
return errors.New("invalid SourceObjectKey")
}
if i.DestinationObjectKey == "" {
return errors.New("invalid DestinationObjectKey")
}
return nil
}
// CopyObjectWithContext copy object from source to destination.
func (dfs *dfstore) CopyObjectWithContext(ctx context.Context, input *CopyObjectInput) error {
req, err := dfs.CopyObjectRequestWithContext(ctx, input)
if err != nil {
return err
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode/100 != 2 {
return fmt.Errorf("bad response status %s", resp.Status)
}
return nil
}
// CopyObjectRequestWithContext returns *http.Request of copying object.
func (dfs *dfstore) CopyObjectRequestWithContext(ctx context.Context, input *CopyObjectInput) (*http.Request, error) {
if err := input.Validate(); err != nil {
return nil, err
}
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
if err := writer.WriteField("source_object_key", input.SourceObjectKey); err != nil {
return nil, err
}
if err := writer.Close(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName, "objects", input.DestinationObjectKey)
query := u.Query()
u.RawQuery = query.Encode()
req, err := http.NewRequestWithContext(ctx, http.MethodPut, u.String(), body)
if err != nil {
return nil, err
}
req.Header.Add(headers.ContentType, writer.FormDataContentType())
req.Header.Add(config.HeaderDragonflyObjectOperation, fmt.Sprint(objectstorage.CopyOperation))
return req, nil
}
// CreateBucketInput is used to construct request of creating bucket.
type CreateBucketInput struct {
// BucketName is bucket name.
BucketName string
}
// Validate validates CreateBucketInput fields.
func (i *CreateBucketInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
return nil
}
// CreateBucketWithContext creates bucket.
func (dfs *dfstore) CreateBucketWithContext(ctx context.Context, input *CreateBucketInput) error {
req, err := dfs.CreateBucketRequestWithContext(ctx, input)
if err != nil {
return err
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode/100 != 2 {
return fmt.Errorf("bad response status %s", resp.Status)
}
return nil
}
// CreateBucketRequestWithContext returns *http.Request of creating bucket.
func (dfs *dfstore) CreateBucketRequestWithContext(ctx context.Context, input *CreateBucketInput) (*http.Request, error) {
if err := input.Validate(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName)
query := u.Query()
u.RawQuery = query.Encode()
return http.NewRequestWithContext(ctx, http.MethodPost, u.String(), nil)
}
// DeleteObjectInput is used to construct request of deleting object.
type DeleteObjectInput struct {
// BucketName is bucket name.
BucketName string
// ObjectKey is object key.
ObjectKey string
}
// Validate validates DeleteObjectInput fields.
func (i *DeleteObjectInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
if i.ObjectKey == "" {
return errors.New("invalid ObjectKey")
}
return nil
}
// DeleteObjectRequestWithContext returns *http.Request of deleting object.
func (dfs *dfstore) DeleteObjectRequestWithContext(ctx context.Context, input *DeleteObjectInput) (*http.Request, error) {
if err := input.Validate(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName, "objects", input.ObjectKey)
if strings.HasSuffix(input.ObjectKey, "/") {
u.Path += "/"
}
return http.NewRequestWithContext(ctx, http.MethodDelete, u.String(), nil)
}
// DeleteObjectWithContext deletes data of object.
func (dfs *dfstore) DeleteObjectWithContext(ctx context.Context, input *DeleteObjectInput) error {
req, err := dfs.DeleteObjectRequestWithContext(ctx, input)
if err != nil {
return err
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode/100 != 2 {
return fmt.Errorf("bad response status %s", resp.Status)
}
return nil
}
// IsObjectExistInput is used to construct request of heading object.
type IsObjectExistInput struct {
// BucketName is bucket name.
BucketName string
// ObjectKey is object key.
ObjectKey string
}
// Validate validates IsObjectExistInput fields.
func (i *IsObjectExistInput) Validate() error {
if i.BucketName == "" {
return errors.New("invalid BucketName")
}
if i.ObjectKey == "" {
return errors.New("invalid ObjectKey")
}
return nil
}
// IsObjectExistRequestWithContext returns *http.Request of heading object.
func (dfs *dfstore) IsObjectExistRequestWithContext(ctx context.Context, input *IsObjectExistInput) (*http.Request, error) {
if err := input.Validate(); err != nil {
return nil, err
}
u, err := url.Parse(dfs.endpoint)
if err != nil {
return nil, err
}
u.Path = filepath.Join("buckets", input.BucketName, "objects", input.ObjectKey)
if strings.HasSuffix(input.ObjectKey, "/") {
u.Path += "/"
}
return http.NewRequestWithContext(ctx, http.MethodHead, u.String(), nil)
}
// IsObjectExistWithContext returns whether the object exists.
func (dfs *dfstore) IsObjectExistWithContext(ctx context.Context, input *IsObjectExistInput) (bool, error) {
req, err := dfs.IsObjectExistRequestWithContext(ctx, input)
if err != nil {
return false, err
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return false, err
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusNotFound {
return false, nil
}
if resp.StatusCode/100 != 2 {
return false, fmt.Errorf("bad response status %s", resp.Status)
}
return true, nil
}