ComfyUI-CloudArchive

ComfyUI-CloudArchive is a plugin that monitors the ComfyUI output directory and automatically archives (saves) generated files to Amazon S3 or S3-compatible storage.

Features

Monitors ComfyUI’s output directory and detects new files (including subdirectories)

Automatically uploads detected files to S3 or S3-compatible storage

Intelligently waits until files are completely written (detects file size stabilization)

Preserves the internal structure of the output directory when uploading

Supports optional session-based prefixes via {session_id} placeholder

RESTful API endpoints for status checking and control

Easy configuration via environment variables

Installation

Clone this repository into ComfyUI’s custom nodes directory:

cd /path/to/ComfyUI/custom_nodes
git clone https://github.com/olduvai-jp/ComfyUI-CloudArchive.git

Install the required Python packages:

pip install boto3 watchdog

Configuration

Set the following environment variables:

S3_ACCESS_KEY_ID (required): Access key ID for the storage service

S3_SECRET_ACCESS_KEY (required): Secret access key for the storage service

S3_REGION (optional): Region for the storage service (default: us-east-1)

S3_BUCKET (required): Bucket name for uploads

S3_PREFIX (optional): Prefix within the bucket (default: comfyui-outputs)

S3_ENDPOINT_URL (optional): URL for S3-compatible endpoint (MinIO, Wasabi, DigitalOcean Spaces, etc.)

S3_ENABLE_CONFLICT_RENAME (optional): When true (default) rename on conflicts as file (n).ext; when false overwrite existing objects

Example environment variable setup (Linux/Mac):

export S3_ACCESS_KEY_ID=your_access_key
export S3_SECRET_ACCESS_KEY=your_secret_key
export S3_REGION=ap-northeast-1
export S3_BUCKET=your-bucket-name
export S3_PREFIX=comfyui/outputs
export S3_ENDPOINT_URL=https://minio.example.com
export S3_ENABLE_CONFLICT_RENAME=true

Windows:

set S3_ACCESS_KEY_ID=your_access_key
set S3_SECRET_ACCESS_KEY=your_secret_key
set S3_REGION=ap-northeast-1
set S3_BUCKET=your-bucket-name
set S3_PREFIX=comfyui/outputs
set S3_ENDPOINT_URL=https://minio.example.com
set S3_ENABLE_CONFLICT_RENAME=true

Using S3-Compatible Endpoints

This plugin supports not only Amazon S3 but also S3-compatible storage services. It can be used with services such as:

MinIO

Wasabi

DigitalOcean Spaces

Backblaze B2

Scaleway Object Storage

Other S3-compatible services

To use an S3-compatible service, set the S3_ENDPOINT_URL environment variable to the endpoint URL of the service.

MinIO Example:

export S3_ACCESS_KEY_ID=your_minio_access_key
export S3_SECRET_ACCESS_KEY=your_minio_secret_key
export S3_BUCKET=your-minio-bucket
export S3_ENDPOINT_URL=http://minio.example.com:9000

Wasabi Example:

export S3_ACCESS_KEY_ID=your_wasabi_access_key
export S3_SECRET_ACCESS_KEY=your_wasabi_secret_key
export S3_REGION=us-east-1
export S3_BUCKET=your-wasabi-bucket
export S3_ENDPOINT_URL=https://s3.wasabisys.com

DigitalOcean Spaces Example:

export S3_ACCESS_KEY_ID=your_spaces_key
export S3_SECRET_ACCESS_KEY=your_spaces_secret
export S3_REGION=nyc3
export S3_BUCKET=your-space-name
export S3_ENDPOINT_URL=https://nyc3.digitaloceanspaces.com

Date Format in S3_PREFIX

The S3_PREFIX environment variable supports date format placeholders that are replaced with the current timestamp at upload time. This allows you to organize files by date automatically.

Supported Format Placeholders

| Placeholder | Description | Example |

|————-|————-|———|

| {Y} | 4-digit year | 2024 |

| {y} | 2-digit year | 24 |

| {m} | Month (01-12) | 01, 12 |

| {d} | Day (01-31) | 01, 31 |

| {H} | Hour (00-23) | 00, 23 |

| {M} | Minute (00-59) | 00, 59 |

| {S} | Second (00-59) | 00, 59 |

| {j} | Day of year (001-366) | 001, 366 |

| {W} | Week number (00-53) | 00, 53 |

| {w} | Weekday (0-6, Sunday=0) | 0, 6 |

| {U} | Week number (00-53, Sunday=0) | 00, 53 |

| {V} | ISO week number (01-53) | 01, 53 |

| {B} | Full month name | January, December |

| {b} | Abbreviated month name | Jan, Dec |

| {A} | Full weekday name | Monday, Sunday |

| {a} | Abbreviated weekday name | Mon, Sun |

Examples

# Organize by year/month/day
export S3_PREFIX=comfyui-outputs/{Y}/{m}/{d}

# Organize by year/month with session
export S3_PREFIX=comfyui-outputs/{Y}/{m}

# Include time information
export S3_PREFIX=comfyui-outputs/{Y}/{m}/{d}/{H}

# Use abbreviated month names
export S3_PREFIX=comfyui-outputs/{Y}/{b}

Result Examples

If you set S3_PREFIX=comfyui-outputs/{Y}/{m}/{d}/{session_id} and upload on January 15, 2024, files will be stored as:

comfyui-outputs/2024/01/15/550e8400-e29b-41d4-a716-446655440000/filename.png

If you set S3_PREFIX=comfyui-outputs/{Y}/{b} and upload in January 2024, files will be stored as:

comfyui-outputs/2024/Jan/filename.png

Conflict Handling and Session IDs

Conflict handling: When S3_ENABLE_CONFLICT_RENAME is true (default), uploads check for existing objects and, if a key already exists, save as name (1).ext, name (2).ext, … until an unused name is found (up to 100 attempts). Set to false to allow overwrites.

Session ID usage: A session ID is generated at startup but applied only if S3_PREFIX explicitly contains {session_id}. If omitted, no session folder is added to the key.

Usage

Automatic Startup

The plugin starts automatically when ComfyUI is launched and monitors the default output directory (ComfyUI/output).

API Endpoints

The following API endpoints are available:

Status Check

GET /cloud-sync/status

Example response:

{
  "running": true,
  "session_id": "550e8400-e29b-41d4-a716-446655440000",
  "total_files": 10,
  "uploaded_files": 8,
  "failed_files": 0,
  "last_upload_time": "2023-04-01T12:34:56",
  "errors": [],
  "recent_uploads": [
    {
      "file_name": "image_01.png",
      "s3_key": "comfyui-outputs/550e8400-e29b-41d4-a716-446655440000/image_01.png",
      "upload_time": "2023-04-01T12:34:56",
      "size_bytes": 1234567
    }
  ]
}

Start Monitoring

POST /cloud-sync/start

Stop Monitoring

POST /cloud-sync/stop

Manual Upload

POST /cloud-sync/upload

Request body:

{
  "file_path": "/path/to/file.png"
}

S3 Directory Structure

Uploaded files are stored in S3 with the following structure:

{S3_PREFIX}/{RELATIVE_PATH}

Example:

comfyui-outputs/image_01.png
comfyui-outputs/subfolder/image_02.png

# With session placeholder:
comfyui-outputs/2024/01/15/550e8400-e29b-41d4-a716-446655440000/image_01.png
comfyui-outputs/2024/01/15/550e8400-e29b-41d4-a716-446655440000/subfolder/image_02.png

The internal structure of the output directory (including subdirectories) is preserved.

Troubleshooting

Environment Variables Not Set

If the required environment variables are not set, error messages will be logged and displayed in the errors field of the /cloud-sync/status endpoint.

Upload Failures

If an upload fails, error messages will be logged and displayed in the errors field of the /cloud-sync/status endpoint. The failed_files counter will also increase.

License

MIT