使用 getFiles 或 deleteFiles 找不到 Firebase 存储项

Question

我正在使用 Firebase 函数在删除 Firestore 项目时删除文件，每个 Firestore 条目有 2 个文件：image.jpg 和 image_thumb.jpg

我正在尝试使用存储桶前缀删除这两个文件，但是找不到文件，我尝试在删除它们之前使用 getFiles 方法查看项目，但这也不会返回任何结果。

const bucket = admin.storage().bucket()

const not_working = await bucket.getFiles({prefix: `photos/${userId}/${photoId}`})
const not_working = await bucket.deleteFiles({prefix: `photos/${userId}/${photoId}`})

如果我删除 ${photoId} 引用并仅查找文件夹，我会得到正确的结果

const bucket = admin.storage().bucket()
const working = await bucket.getFiles({prefix: `photos/${userId}/`})

这会返回以下数据

[
>    [
>      File {
>        _events: [Object: null prototype] {},
>        _eventsCount: 0,
>        _maxListeners: undefined,
>        metadata: [Object],
>        baseUrl: '/o',
>        parent: [Bucket],
>        id: 'photos%2FkLxGzah8zc7Vbrl0c3iLic8tkqH2%2Fcad2ce98-dfa7-4611-9a88-913328ab4590.png',
>        createMethod: undefined,
>        methods: [Object],
>        interceptors: [],
>        pollIntervalMs: undefined,
>        create: undefined,
>        bucket: [Bucket],
>        storage: [Storage],
>        kmsKeyName: undefined,
>        userProject: undefined,
>        name: 'photos/kLxGzah8zc7Vbrl0c3iLic8tkqH2/cad2ce98-dfa7-4611-9a88-913328ab4590.png',
>        acl: [Acl],
>        instanceRetryValue: true,
>        instancePreconditionOpts: undefined,
>        [Symbol(kCapture)]: false
>      },
>      File {
>        _events: [Object: null prototype] {},
>        _eventsCount: 0,
>        _maxListeners: undefined,
>        metadata: [Object],
>        baseUrl: '/o',
>        parent: [Bucket],
>        id: 'photos%2FkLxGzah8zc7Vbrl0c3iLic8tkqH2%2Fcad2ce98-dfa7-4611-9a88-913328ab4590_thumb.png',
>        createMethod: undefined,
>        methods: [Object],
>        interceptors: [],
>        pollIntervalMs: undefined,
>        create: undefined,
>        bucket: [Bucket],
>        storage: [Storage],
>        kmsKeyName: undefined,
>        userProject: undefined,
>        name: 'photos/kLxGzah8zc7Vbrl0c3iLic8tkqH2/cad2ce98-dfa7-4611-9a88-913328ab4590_thumb.png',
>        acl: [Acl],
>        instanceRetryValue: true,
>        instancePreconditionOpts: undefined,
>        [Symbol(kCapture)]: false
>      }
>    ]
>  ]

Answer 1

如果我删除 ${photoId} 引用并仅查找文件夹，我 得到正确的结果

这实际上是预期的行为，如Cloud Storage documentation 所示（查看“Node.js”选项卡）：您不应该在prefix 值中包含文件名的最后一部分（即最后一个/ 之后的部分，或者，如果我们使用目录树范例，文件名本身，没有父目录）。

代码示例包含以下解释：

 /**
   * This can be used to list all blobs in a "folder", e.g. "public/".
   *
   * The delimiter argument can be used to restrict the results to only the
   * "files" in the given "folder". Without the delimiter, the entire tree under
   * the prefix is returned. For example, given these blobs:
   *
   *   /a/1.txt
   *   /a/b/2.txt
   *
   * If you just specify prefix = 'a/', you'll get back:
   *
   *   /a/1.txt
   *   /a/b/2.txt
   *
   * However, if you specify prefix='a/' and delimiter='/', you'll get back:
   *
   *   /a/1.txt
   */