获取firebase管理文件上传的进度

Question

我试图得到一个1分钟的视频上传到firebase桶存储使用管理SDK的进度。我见过很多关于使用firebase.storage().ref.child....但我无法做到这一点与管理sdk，因为他们没有相同的功能。这是我的文件上传：

exports.uploadMedia = (req, res) => {
    const BusBoy = require('busboy');
    const path = require('path');
    const os = require('os');
    const fs = require('fs');

    const busboy = new BusBoy({ headers: req.headers, limits: { files: 1, fileSize: 200000000 } });

    let mediaFileName;
    let mediaToBeUploaded = {};

    busboy.on('file', (fieldname, file, filename, encoding, mimetype) => {

        if(mimetype !== 'image/jpeg' && mimetype !== 'image/png' && mimetype !== 'video/quicktime' && mimetype !== 'video/mp4') {
            console.log(mimetype);
            return res.status(400).json({ error: 'Wrong file type submitted, only .png, .jpeg, .mov, and .mp4 files allowed'})
        }

        // my.image.png
        const imageExtension = filename.split('.')[filename.split('.').length - 1];
        
        //43523451452345231234.png
        mediaFileName = `${Math.round(Math.random()*100000000000)}.${imageExtension}`;
        const filepath = path.join(os.tmpdir(), mediaFileName);
        mediaToBeUploaded = { filepath, mimetype };
        file.pipe(fs.createWriteStream(filepath));

        file.on('limit', function(){
            fs.unlink(filepath, function(){
                return res.json({'Error': 'Max file size is 200 Mb, file size too large'});
            });
        });
    });
    busboy.on('finish', () => {
        admin
        .storage()
        .bucket()
        .upload(mediaToBeUploaded.filepath, {
            resumable: false,
            metadata: {
                metadata: {
                    contentType: mediaToBeUploaded.mimetype
                }
            }
        })
        .then(() => {
            const meadiaUrl = `https://firebasestorage.googleapis.com/v0/b/${config.storageBucket}/o/${mediaFileName}?alt=media`;
            return res.json({mediaUrl: meadiaUrl});
        })
        .catch((err) => {
            console.error(err);
            return res.json({'Error': 'Error uploading media'});
        });
    });
    req.pipe(busboy);
}

这个方法现在还可以，但唯一的问题是用户不能看到他们的1或2分钟视频上传的位置。目前，它只是一个活动指示器，用户只是坐着等待，没有任何通知。如果有帮助的话，我会在前端使用react native。如有任何帮助，不胜感激！

Answer 1

我可以在客户端更容易地实现...但它与图像和视频上传进度完美地工作。在后端，我使用的是管理sdk，但前端我最初使用的是firebase sdk。

        this.uploadingMedia = true;
        const imageExtension = this.mediaFile.split('.')[this.mediaFile.split('.').length - 1];
        const mediaFileName = `${Math.round(Math.random()*100000000000)}.${imageExtension}`;
        const response = await fetch(this.mediaFile);
        const blob = await response.blob();
        const storageRef = storage.ref(`${mediaFileName}`).put(blob);
        storageRef.on(`state_changed`,snapshot=>{
          this.uploadProgress = (snapshot.bytesTransferred/snapshot.totalBytes);
        }, error=>{
          this.error = error.message;
          this.submitting = false;
          this.uploadingMedia = false;
          return;
        },
        async () => {
          storageRef.snapshot.ref.getDownloadURL().then(async (url)=>{
            imageUrl = [];
            videoUrl = [url];
            this.uploadingMedia = false;
            this.submitPost(imageUrl, videoUrl);
          });
        });