File Upload

There are many situations where you might need to upload local files to your edge when using Olares. The Olares Application Runtime (TAPR) provides a common file-upload component to simplify this process in app development. Moreover, this file-upload component features resumable upload.

How to install

To use this feature, simply add the following configuration to the OlaresManifest.yaml file in the application chart.

upload:
  fileType:
    - pdf
  dest: /appdata
  limitedSize: 3729747942

Frontend API

NOTE

The limit for a single upload is 10MB. If the file is larger than 10MB, you must upload using the resumable upload API.

Upload

This interface is used to upload files to the server and get the file id and status.

Example

Request

curl --location 'http://host:40030/upload/' \
--form 'storage_path="./testupload/"' \
--form 'file_relative_path="1.csv"' \
--form 'file_type="csv"' \
--form 'file_size="1937"'

Response

{
  "code": 0,
  "message": "success",
  "data": {
    "id": "b0b76f02bdb8ee3269602c983c4a2aeb",
    "offset": 0,
    "file_relative_path": "1.csv",
    "file_type": "csv",
    "file_size": 1937,
    "storage_path": "./testupload/"
  }
}

• Request

  • URL: /upload/

  • Method: POST

  • Body:

    "mode": "formdata",  //The request body type must set to multipart/form-data
    "body parameters": {
      "storage_path": string,   //required, the storage path for the file on the server. Ensure that this folder exists.
      "file_relative_path": string, //required, the location of file relative to the storage_path, it must include the filename. If it is a floder, end with '/'
      "file_type": string,  //required, File type
      "file_size": integer, //required, File size
    }

• Success Response

  The response body contains the following content, formatted in JSON.

  • Status Code : 200 OK

      "code": integer, // Response code, 0 means success, non-zero means failure.
      "message": string, // Response message, return "success" upon success, and the corresponding error message upon failure.
      "data":{  //Response data. Upon success, it includes the following fields (these contents is absent when uploading a folder):
        "id": string,   // Unique identifier of the file
        "offset": integer,  //The offset of the file uploaded
        "file_relative_path": string, 
        "file_type": string,
        "file_size": integer,
        "storage_path": string
      }

• Error Response

  • Status Code : 400 Bad Request

    The request is invalid due to illegal or missing parameters.

  • Status Code : 500 Internal Server Error

    An internal server error has occurred, which prevented the request from being fulfilled. This could be due to reasons such as failure to create a folder or save file information.

Resumable Upload

This interface is used to continue uploading the remaining part of the file.

Example

Request

curl --location --request PATCH 'http://host:40030/upload/b0b76f02bdb8ee3269602c983c4a2aeb' \
--form 'file=@"/Users/yangtao/Downloads/1.csv"' \
--form 'upload_offset="0"'

Response

{
  "code": 0,
  "message": "File uploaded successfully",
  "data": {
    "id": "b0b76f02bdb8ee3269602c983c4a2aeb",
    "offset": 1937,
    "file_name": "1.csv",
    "file_type": "csv",
    "file_size": 1937,
    "storage_path": "./testupload"
  }
}
{
  "code": 0,
  "message": "Continue uploading",
  "data": {
    "id": "e3133b0f838124ff3ebcc9cb14774f26",
    "offset": 1048576,
    "file_name": "1.pdf",
    "file_type": ".pdf",
    "file_size": 10296258,
    "storage_path": "./testupload"
  }
}

• Request

  • URL: http://host:40030/upload/{uid}

  • Method: PATCH

  • Body:

    "mode": "formdata",  //The request body type must set to multipart/form-data
    "body parameters": {
      "file": string,   //required. The file to be uploaded. Please upload the file in multipart/form-data format.
      "upload_offset": integer,   //required. The offset refers to the size of the file that has already been uploaded.
    }
    "url parameters": {
      "uid": string,   //required. This is the unique identifier of the file. You can obtain it from the response data of the Upload API.
    }

• Success Response

  The response body contains the following content, formatted in JSON.

  • Status Code : 200 OK

      "code": integer, // Response code, 0 means success, non-zero means failure.
      "message": string, // Response message, return "File uploaded successfully" upon success, and the corresponding error message upon failure.
      "data":{  //Response data. Upon success, it includes the following fields
        "id": string,   // Unique identifier of the file
        "offset": integer,  //The offset of the file uploaded
        "file_relative_path": string, 
        "file_type": string,
        "file_size": integer,
        "storage_path": string
      }

• Error Response

  • Status Code : 400 Bad Request

    The request is invalid due to illegal or missing parameters.

    { "code": 1, "message": "Invalid upload ID" }

  • Status Code : 500 Internal Server Error

    An internal server error has occurred, which prevented the request from being fulfilled. This could be due to reasons such as failure to create a folder, save file information, or move file.