95 lines
2.7 KiB
Markdown
95 lines
2.7 KiB
Markdown
# Multi-part File Upload API
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This document outlines the process for uploading large files in chunks using the multi-part upload API.
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## 1. Create an Upload Task
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To begin a file upload, you first need to create an upload task. This is done by sending a `POST` request to the `/api/files/upload/create` endpoint.
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**Endpoint:** `POST /api/files/upload/create`
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**Request Body:**
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```json
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{
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"hash": "string (file hash, e.g., MD5 or SHA256)",
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"file_name": "string",
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"file_size": "long (in bytes)",
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"content_type": "string (e.g., 'image/jpeg')",
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"pool_id": "string (GUID)",
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"bundle_id": "string (GUID, optional)",
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"encrypt_password": "string (optional)",
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"expired_at": "string (ISO 8601 format, optional)",
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"chunk_size": "long (in bytes, optional, defaults to 5MB)"
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}
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```
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**Response:**
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If a file with the same hash already exists, the server will return a `200 OK` with the following body:
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```json
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{
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"file_exists": true,
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"file": { ... (CloudFile object in snake_case) ... }
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}
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```
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If the file does not exist, the server will return a `200 OK` with a task ID and chunk information:
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```json
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{
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"file_exists": false,
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"task_id": "string",
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"chunk_size": "long",
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"chunks_count": "int"
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}
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```
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You will need the `task_id`, `chunk_size`, and `chunks_count` for the next steps.
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## 2. Upload File Chunks
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Once you have a `task_id`, you can start uploading the file in chunks. Each chunk is sent as a `POST` request with `multipart/form-data`.
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**Endpoint:** `POST /api/files/upload/chunk/{taskId}/{chunkIndex}`
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- `taskId`: The ID of the upload task from the previous step.
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- `chunkIndex`: The 0-based index of the chunk you are uploading.
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**Request Body:**
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The body of the request should be `multipart/form-data` with a single form field named `chunk` containing the binary data for that chunk.
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The size of each chunk should be equal to the `chunk_size` returned in the "Create Upload Task" step, except for the last chunk, which may be smaller.
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**Response:**
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A successful chunk upload will return a `200 OK` with an empty body.
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You should upload all chunks from `0` to `chunks_count - 1`.
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## 3. Complete the Upload
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After all chunks have been successfully uploaded, you must send a final request to complete the upload process. This will merge all the chunks into a single file and process it.
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**Endpoint:** `POST /api/files/upload/complete/{taskId}`
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- `taskId`: The ID of the upload task.
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**Request Body:**
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The request body should be empty.
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**Response:**
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A successful request will return a `200 OK` with the `CloudFile` object for the newly uploaded file.
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```json
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{
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... (CloudFile object) ...
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}
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```
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If any chunks are missing or an error occurs during the merge process, the server will return a `400 Bad Request` with an error message.
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