minio: preview image cache

config/config.yaml

@@ -127,8 +127,6 @@ api:
 # apiURL is the address of the api, the access address of the app, use s3 must be configured
 # minio.endpoint can be configured as an intranet address,
 # minio.signEndpoint is minio public network address
-# minio.thumbnailApi is the address of the thumbnail service, the access address of the app, https://github.com/OpenIMSDK/minio-ext
-# minio.thumbnailUseSignEndpoint whether the url parameter for generating thumbnails uses a signed address, the default is fine
 object:
   enable: "minio"
   apiURL: "http://127.0.0.1:10002"
@@ -139,8 +137,6 @@ object:
     secretAccessKey: "openIM123"
     sessionToken: ""
     signEndpoint: "http://127.0.0.1:10005"
-    thumbnailApi: "http://127.0.0.1:10003"
-    thumbnailUseSignEndpoint: false
   cos:
     bucketURL: "https://temp-1252357374.cos.ap-chengdu.myqcloud.com"
     secretID: ""

pkg/common/config/config.go

@@ -114,14 +114,12 @@ type configStruct struct {
 		Enable string `yaml:"enable"`
 		ApiURL string `yaml:"apiURL"`
 		Minio  struct {
-			Bucket                   string `yaml:"bucket"`
+			Bucket          string `yaml:"bucket"`
-			Endpoint                 string `yaml:"endpoint"`
+			Endpoint        string `yaml:"endpoint"`
-			AccessKeyID              string `yaml:"accessKeyID"`
+			AccessKeyID     string `yaml:"accessKeyID"`
-			SecretAccessKey          string `yaml:"secretAccessKey"`
+			SecretAccessKey string `yaml:"secretAccessKey"`
-			SessionToken             string `yaml:"sessionToken"`
+			SessionToken    string `yaml:"sessionToken"`
-			SignEndpoint             string `yaml:"signEndpoint"`
+			SignEndpoint    string `yaml:"signEndpoint"`
-			ThumbnailApi             string `yaml:"thumbnailApi"`
-			ThumbnailUseSignEndpoint bool   `yaml:"thumbnailUseSignEndpoint"`
 		} `yaml:"minio"`
 		Cos struct {
 			BucketURL    string `yaml:"bucketURL"`

pkg/common/db/s3/cont/controller.go

@@ -256,7 +256,7 @@ func (c *Controller) IsNotFound(err error) bool {
 }
 
 func (c *Controller) AccessURL(ctx context.Context, name string, expire time.Duration, opt *s3.AccessURLOption) (string, error) {
-	if opt.Image != nil || opt.Video != nil {
+	if opt.Image != nil {
 		opt.Filename = ""
 		opt.ContentType = ""
 	}

pkg/common/db/s3/cos/cos.go

@@ -262,7 +262,6 @@ func (c *Cos) ListUploadedParts(ctx context.Context, uploadID string, name strin
 
 func (c *Cos) AccessURL(ctx context.Context, name string, expire time.Duration, opt *s3.AccessURLOption) (string, error) {
 	var imageMogr string
-	//snapshot := make(url.Values)
 	var option cos.PresignedURLOptions
 	if opt != nil {
 		query := make(url.Values)
@@ -292,30 +291,6 @@ func (c *Cos) AccessURL(ctx context.Context, name string, expire time.Duration,
 				imageMogr = "&imageMogr2/thumbnail/" + strings.Join(style, "/") + "/ignore-error/1"
 			}
 		}
-		if opt.Video != nil {
-			// 对象存储/桶存储列表/数据处理/媒体处理 开启
-			// https://cloud.tencent.com/document/product/436/55671
-			query.Set("ci-process", "snapshot")
-			sec := float64(opt.Video.Time/time.Millisecond) / 1000
-			if sec < 0 {
-				sec = 0
-			}
-			query.Set("time", strconv.FormatFloat(sec, 'f', 3, 64))
-			switch opt.Video.Format {
-			case
-				videoSnapshotImagePng,
-				videoSnapshotImageJpg:
-			default:
-				opt.Video.Format = videoSnapshotImageJpg
-			}
-			query.Set("format", opt.Video.Format)
-			if opt.Video.Width > 0 {
-				query.Set("width", strconv.Itoa(opt.Video.Width))
-			}
-			if opt.Video.Height > 0 {
-				query.Set("height", strconv.Itoa(opt.Video.Height))
-			}
-		}
 		if opt.ContentType != "" {
 			query.Set("response-content-type", opt.ContentType)
 		}

pkg/common/db/s3/minio/image.go

@@ -0,0 +1,105 @@
+package minio
+
+import (
+	_ "golang.org/x/image/bmp"
+	_ "golang.org/x/image/tiff"
+	_ "golang.org/x/image/webp"
+	"image"
+	_ "image/gif"
+	_ "image/jpeg"
+	_ "image/png"
+	"io"
+)
+
+const (
+	formatPng  = "png"
+	formatJpeg = "jpeg"
+	formatJpg  = "jpg"
+	formatGif  = "gif"
+)
+
+func ImageStat(reader io.Reader) (image.Image, string, error) {
+	return image.Decode(reader)
+}
+
+func ImageWidthHeight(img image.Image) (int, int) {
+	bounds := img.Bounds().Max
+	return bounds.X, bounds.Y
+}
+
+func resizeImage(img image.Image, maxWidth, maxHeight int) image.Image {
+	bounds := img.Bounds()
+	imgWidth := bounds.Max.X
+	imgHeight := bounds.Max.Y
+
+	// 计算缩放比例
+	scaleWidth := float64(maxWidth) / float64(imgWidth)
+	scaleHeight := float64(maxHeight) / float64(imgHeight)
+
+	// 如果都为0，则不缩放，返回原始图片
+	if maxWidth == 0 && maxHeight == 0 {
+		return img
+	}
+
+	// 如果宽度和高度都大于0，则选择较小的缩放比例，以保持宽高比
+	if maxWidth > 0 && maxHeight > 0 {
+		scale := scaleWidth
+		if scaleHeight < scaleWidth {
+			scale = scaleHeight
+		}
+
+		// 计算缩略图尺寸
+		thumbnailWidth := int(float64(imgWidth) * scale)
+		thumbnailHeight := int(float64(imgHeight) * scale)
+
+		// 使用"image"库的Resample方法生成缩略图
+		thumbnail := image.NewRGBA(image.Rect(0, 0, thumbnailWidth, thumbnailHeight))
+		for y := 0; y < thumbnailHeight; y++ {
+			for x := 0; x < thumbnailWidth; x++ {
+				srcX := int(float64(x) / scale)
+				srcY := int(float64(y) / scale)
+				thumbnail.Set(x, y, img.At(srcX, srcY))
+			}
+		}
+
+		return thumbnail
+	}
+
+	// 如果只指定了宽度或高度，则根据最大不超过的规则生成缩略图
+	if maxWidth > 0 {
+		thumbnailWidth := maxWidth
+		thumbnailHeight := int(float64(imgHeight) * scaleWidth)
+
+		// 使用"image"库的Resample方法生成缩略图
+		thumbnail := image.NewRGBA(image.Rect(0, 0, thumbnailWidth, thumbnailHeight))
+		for y := 0; y < thumbnailHeight; y++ {
+			for x := 0; x < thumbnailWidth; x++ {
+				srcX := int(float64(x) / scaleWidth)
+				srcY := int(float64(y) / scaleWidth)
+				thumbnail.Set(x, y, img.At(srcX, srcY))
+			}
+		}
+
+		return thumbnail
+	}
+
+	if maxHeight > 0 {
+		thumbnailWidth := int(float64(imgWidth) * scaleHeight)
+		thumbnailHeight := maxHeight
+
+		// 使用"image"库的Resample方法生成缩略图
+		thumbnail := image.NewRGBA(image.Rect(0, 0, thumbnailWidth, thumbnailHeight))
+		for y := 0; y < thumbnailHeight; y++ {
+			for x := 0; x < thumbnailWidth; x++ {
+				srcX := int(float64(x) / scaleHeight)
+				srcY := int(float64(y) / scaleHeight)
+				thumbnail.Set(x, y, img.At(srcX, srcY))
+			}
+		}
+
+		return thumbnail
+	}
+
+	// 默认情况下，返回原始图片
+	return img
+}

pkg/common/db/s3/minio/minio.go

@@ -15,16 +15,24 @@
 package minio
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/OpenIMSDK/tools/errs"
 	"github.com/OpenIMSDK/tools/log"
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
 	"github.com/minio/minio-go/v7/pkg/signer"
+	"image"
+	"image/gif"
+	"image/jpeg"
+	"image/png"
+	"io"
 	"net/http"
 	"net/url"
+	"path"
+	"path/filepath"
 	"reflect"
 	"strconv"
 	"strings"
@@ -46,6 +54,13 @@ const (
 	maxNumSize  = 10000
 )
 
+const (
+	maxImageWidth  = 1024
+	maxImageHeight = 1024
+	maxImageSize   = 1024 * 1024 * 50
+	pathInfo       = "/minio/thumbnail"
+)
+
 func NewMinio() (s3.Interface, error) {
 	conf := config.Config.Object.Minio
 	u, err := url.Parse(conf.Endpoint)
@@ -60,21 +75,12 @@ func NewMinio() (s3.Interface, error) {
 	if err != nil {
 		return nil, err
 	}
-	imageApi := conf.ThumbnailApi
-	if imageApi != "" {
-		if imageApi[len(imageApi)-1] != '/' {
-			imageApi += "/"
-		}
-		imageApi += "image?"
-	}
 	m := &Minio{
-		bucket:           conf.Bucket,
+		bucket:    conf.Bucket,
-		bucketURL:        conf.Endpoint + "/" + conf.Bucket + "/",
+		bucketURL: conf.Endpoint + "/" + conf.Bucket + "/",
-		imageApi:         imageApi,
+		core:      &minio.Core{Client: client},
-		imageUseSignAddr: conf.ThumbnailUseSignEndpoint,
+		lock:      &sync.Mutex{},
-		core:             &minio.Core{Client: client},
+		init:      false,
-		lock:             &sync.Mutex{},
-		init:             false,
 	}
 	if conf.SignEndpoint == "" {
 		m.sign = m.core.Client
@@ -101,16 +107,14 @@ func NewMinio() (s3.Interface, error) {
 }
 
 type Minio struct {
-	bucket           string
+	bucket    string
-	bucketURL        string
+	bucketURL string
-	imageApi         string
+	location  string
-	imageUseSignAddr bool
+	opts      *minio.Options
-	location         string
+	core      *minio.Core
-	opts             *minio.Options
+	sign      *minio.Client
-	core             *minio.Core
+	lock      sync.Locker
-	sign             *minio.Client
+	init      bool
-	lock             sync.Locker
-	init             bool
 }
 
 func (m *Minio) initMinio(ctx context.Context) error {
@@ -354,6 +358,19 @@ func (m *Minio) ListUploadedParts(ctx context.Context, uploadID string, name str
 	return res, nil
 }
 
+func (m *Minio) presignedGetObject(ctx context.Context, name string, expire time.Duration, query url.Values) (string, error) {
+	if expire <= 0 {
+		expire = time.Hour * 24 * 365 * 99 // 99 years
+	} else if expire < time.Second {
+		expire = time.Second
+	}
+	rawURL, err := m.sign.PresignedGetObject(ctx, m.bucket, name, expire, query)
+	if err != nil {
+		return "", err
+	}
+	return rawURL.String(), nil
+}
+
 func (m *Minio) AccessURL(ctx context.Context, name string, expire time.Duration, opt *s3.AccessURLOption) (string, error) {
 	if err := m.initMinio(ctx); err != nil {
 		return "", err
@@ -367,43 +384,120 @@ func (m *Minio) AccessURL(ctx context.Context, name string, expire time.Duration
 			reqParams.Set("response-content-disposition", `attachment; filename=`+strconv.Quote(opt.Filename))
 		}
 	}
-	if expire <= 0 {
+	if opt.Image == nil || (opt.Image.Width < 0 && opt.Image.Height < 0 && opt.Image.Format == "") || (opt.Image.Width > maxImageWidth || opt.Image.Height > maxImageHeight) {
-		expire = time.Hour * 24 * 365 * 99 // 99 years
+		return m.presignedGetObject(ctx, name, expire, reqParams)
-	} else if expire < time.Second {
-		expire = time.Second
 	}
-	var client *minio.Client
+	fileInfo, err := m.StatObject(ctx, name)
-	if opt.Image == nil && opt.Video == nil {
+	if err != nil {
-		client = m.sign
+		return "", err
-	} else if m.imageUseSignAddr {
+	}
-		client = m.sign
+	if fileInfo.Size > maxImageSize {
+		return "", errors.New("file size too large")
+	}
+	objectInfoPath := path.Join(pathInfo, fileInfo.ETag, "image.json")
+	var (
+		img  image.Image
+		info minioImageInfo
+	)
+	data, err := m.getObjectData(ctx, objectInfoPath, 1024)
+	if err == nil {
+		if err := json.Unmarshal(data, &info); err != nil {
+			return "", fmt.Errorf("unmarshal minio image info.json error: %w", err)
+		}
+		if info.NotImage {
+			return "", errors.New("not image")
+		}
+	} else if m.IsNotFound(err) {
+		reader, err := m.core.Client.GetObject(ctx, m.bucket, name, minio.GetObjectOptions{})
+		if err != nil {
+			return "", err
+		}
+		defer reader.Close()
+		imageInfo, format, err := ImageStat(reader)
+		if err == nil {
+			info.NotImage = false
+			info.Format = format
+			info.Width, info.Height = ImageWidthHeight(imageInfo)
+			img = imageInfo
+		} else {
+			info.NotImage = true
+		}
+		data, err := json.Marshal(&info)
+		if err != nil {
+			return "", err
+		}
+		if _, err := m.core.Client.PutObject(ctx, m.bucket, objectInfoPath, bytes.NewReader(data), int64(len(data)), minio.PutObjectOptions{}); err != nil {
+			return "", err
+		}
 	} else {
-		client = m.core.Client
+		return "", err
 	}
-	u, err := client.PresignedGetObject(ctx, m.bucket, name, expire, reqParams)
+	if opt.Image.Width > info.Width || opt.Image.Width <= 0 {
-	if err != nil {
+		opt.Image.Width = info.Width
+	}
+	if opt.Image.Height > info.Height || opt.Image.Height <= 0 {
+		opt.Image.Height = info.Height
+	}
+	opt.Image.Format = strings.ToLower(opt.Image.Format)
+	if opt.Image.Format == formatJpg {
+		opt.Image.Format = formatJpeg
+	}
+	switch opt.Image.Format {
+	case formatPng:
+	case formatJpeg:
+	case formatGif:
+	default:
+		if info.Format == formatGif {
+			opt.Image.Format = formatGif
+		} else {
+			opt.Image.Format = formatJpeg
+		}
+	}
+	reqParams.Set("response-content-type", "image/"+opt.Image.Format)
+	if opt.Image.Width == info.Width && opt.Image.Height == info.Height && opt.Image.Format == info.Format {
+		return m.presignedGetObject(ctx, name, expire, reqParams)
+	}
+	cacheKey := filepath.Join(pathInfo, fileInfo.ETag, fmt.Sprintf("image_w%d_h%d.%s", opt.Image.Width, opt.Image.Height, opt.Image.Format))
+	if _, err := m.core.Client.StatObject(ctx, m.bucket, cacheKey, minio.StatObjectOptions{}); err == nil {
+		return m.presignedGetObject(ctx, cacheKey, expire, reqParams)
+	} else if !m.IsNotFound(err) {
 		return "", err
 	}
-	if opt.Image == nil && opt.Video == nil {
+	if img == nil {
-		return u.String(), nil
+		reader, err := m.core.Client.GetObject(ctx, m.bucket, name, minio.GetObjectOptions{})
+		if err != nil {
+			return "", err
+		}
+		defer reader.Close()
+		img, _, err = ImageStat(reader)
+		if err != nil {
+			return "", err
+		}
 	}
-	if m.imageApi == "" {
+	thumbnail := resizeImage(img, opt.Image.Width, opt.Image.Height)
-		return "", errs.ErrInternalServer.Wrap("minio: thumbnail not configured")
+	buf := bytes.NewBuffer(nil)
+	switch opt.Image.Format {
+	case formatPng:
+		err = png.Encode(buf, thumbnail)
+	case formatJpeg:
+		err = jpeg.Encode(buf, thumbnail, nil)
+	case formatGif:
+		err = gif.Encode(buf, thumbnail, nil)
+	}
+	if _, err := m.core.Client.PutObject(ctx, m.bucket, cacheKey, buf, int64(buf.Len()), minio.PutObjectOptions{}); err != nil {
+		return "", err
 	}
-	query := make(url.Values)
+	return m.presignedGetObject(ctx, cacheKey, expire, reqParams)
-	query.Set("url", u.String())
+}
-	if opt.Image != nil {
+
-		query.Set("type", "image")
+func (m *Minio) getObjectData(ctx context.Context, name string, limit int64) ([]byte, error) {
-		query.Set("width", strconv.Itoa(opt.Image.Width))
+	object, err := m.core.Client.GetObject(ctx, m.bucket, name, minio.GetObjectOptions{})
-		query.Set("height", strconv.Itoa(opt.Image.Height))
+	if err != nil {
-		query.Set("format", opt.Image.Format)
+		return nil, err
 	}
-	if opt.Video != nil {
+	defer object.Close()
-		query.Set("type", "video")
+	if limit < 0 {
-		query.Set("time", strconv.Itoa(int(opt.Video.Time/time.Millisecond)))
+		return io.ReadAll(object)
-		query.Set("width", strconv.Itoa(opt.Video.Width))
-		query.Set("height", strconv.Itoa(opt.Video.Height))
-		query.Set("format", opt.Video.Format)
 	}
-	return m.imageApi + query.Encode(), nil
+	return io.ReadAll(io.LimitReader(object, 1024))
 }

pkg/common/db/s3/minio/struct.go

@@ -0,0 +1,8 @@
+package minio
+
+type minioImageInfo struct {
+	NotImage bool   `json:"notImage,omitempty"`
+	Width    int    `json:"width,omitempty"`
+	Height   int    `json:"height,omitempty"`
+	Format   string `json:"format,omitempty"`
+}

pkg/common/db/s3/oss/oss.go

@@ -299,29 +299,6 @@ func (o *OSS) AccessURL(ctx context.Context, name string, expire time.Duration,
 			process += ",format," + format
 			opts = append(opts, oss.Process(process))
 		}
-		if opt.Video != nil {
-			// 文档地址: https://help.aliyun.com/zh/oss/user-guide/video-snapshots?spm=a2c4g.11186623.0.0.23f743b0BR5WxX
-			// x-oss-process=video/snapshot,t_7000,f_jpg,w_800,h_600,m_fast
-			millisecond := int(opt.Video.Time / time.Millisecond)
-			if millisecond < 0 {
-				millisecond = 0
-			}
-			switch opt.Video.Format {
-			case videoSnapshotImageJpg, videoSnapshotImagePng:
-			default:
-				opt.Video.Format = videoSnapshotImageJpg
-			}
-			process := "video/snapshot,t_" + strconv.Itoa(millisecond) + ",f_" + opt.Video.Format
-			if opt.Video.Width > 0 {
-				process += ",w_" + strconv.Itoa(opt.Video.Width)
-			}
-			if opt.Video.Height > 0 {
-				process += ",h_" + strconv.Itoa(opt.Video.Height)
-			}
-			process += ",ar_auto,m_fast"
-			fmt.Println(process)
-			opts = append(opts, oss.Process(process))
-		}
 		if opt.ContentType != "" {
 			opts = append(opts, oss.ResponseContentType(opt.ContentType))
 		}

pkg/common/db/s3/s3.go

@@ -122,18 +122,10 @@ type Image struct {
 	Height int    `json:"height"`
 }
 
-type Video struct {
-	Width  int           `json:"width"`
-	Height int           `json:"height"`
-	Time   time.Duration `json:"time"`
-	Format string        `json:"format"`
-}
-
 type AccessURLOption struct {
 	ContentType string `json:"contentType"`
 	Filename    string `json:"filename"`
 	Image       *Image `json:"image"`
-	Video       *Video `json:"video"`
 }
 
 type Interface interface {