@nestjs/common#StreamableFile TypeScript Examples

The following examples show how to use @nestjs/common#StreamableFile. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: app.controller.ts    From nestjs-file-streaming with MIT License 6 votes vote down vote up 
@ApiOperation({ summary: 'Download a file.' })
  @Get(':id')
  downloadFile(
    @Param('id') id: string,
    @Req() request: Request,
    @Res({ passthrough: true }) response: Response,
  ): Promise<StreamableFile> {
    return this.appService.download(id, request, response)
  }
Example #2
Source File: app.service.ts    From nestjs-file-streaming with MIT License 5 votes vote down vote up 
async download(
    id: string,
    request: Request,
    response: Response,
  ): Promise<StreamableFile> {
    try {
      if (!ObjectId.isValid(id)) {
        throw new BadRequestException(null, 'InvalidVideoId')
      }

      const oId = new ObjectId(id)
      const fileInfo = await this.fileModel.findOne({ _id: id }).exec()

      if (!fileInfo) {
        throw new NotFoundException(null, 'VideoNotFound')
      }

      if (request.headers.range) {
        const range = request.headers.range.substr(6).split('-')
        const start = parseInt(range[0], 10)
        const end = parseInt(range[1], 10) || null
        const readstream = this.bucket.openDownloadStream(oId, {
          start,
          end,
        })

        response.status(206)
        response.headers({
          'Accept-Ranges': 'bytes',
          'Content-Type': fileInfo.contentType,
          'Content-Range': `bytes ${start}-${end ? end : fileInfo.length - 1}/${
            fileInfo.length
          }`,
          'Content-Length': (end ? end : fileInfo.length) - start,
          'Content-Disposition': `attachment; filename="${fileInfo.filename}"`,
        })

        return new StreamableFile(readstream)
      } else {
        const readstream = this.bucket.openDownloadStream(oId)

        response.status(200)
        response.headers({
          'Accept-Range': 'bytes',
          'Content-Type': fileInfo.contentType,
          'Content-Length': fileInfo.length,
          'Content-Disposition': `attachment; filename="${fileInfo.filename}"`,
        })

        response.send(readstream)
      }
    } catch (e) {
      console.error(e)
      throw new ServiceUnavailableException()
    }
  }