Hot Folder Script Isolation With Temporary Execution Folders

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Solution Overview

Problem

Hot folders in production printing environments face issues with script execution, including security risks and resource conflicts due to unfettered system access and simultaneous execution of multiple script instances.

Innovation Solution

Implementing a method where scripts are executed within temporary folders with unique filenames, using a service account with limited privileges, and monitoring their execution, ensuring they do not access the broader system, and deleting the temporary folders upon completion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If scripts are given unfettered access to the system to perform operations outside hot folders, then script functionality and flexibility are improved, but security risks increase significantly

Engineering Contradiction:

Improvescript functionalityVSAvoidsecurity risks

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system segments the execution environment by creating isolated temporary folders for each script invocation. Each temporary folder contains only the necessary files for that specific script execution, preventing scripts from accessing the broader system while maintaining their functional capabilities. This segmentation resolves the contradiction by allowing script functionality within controlled boundaries.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The temporary folder acts as an intermediary between the hot folder and the rest of the system. It provides a controlled environment where scripts can execute and access files without direct access to the broader system. The temporary folder mediates the interaction, enabling script functionality while blocking harmful access to other system resources.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If multiple script instances are executed simultaneously to handle multiple print jobs, then productivity is improved, but resource conflicts occur between scripts

Engineering Contradiction:

Improveprocessing throughputVSAvoidresource conflicts

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system creates separate temporary folders for each script instance, physically isolating their file operations. This segmentation allows multiple scripts to execute simultaneously without resource conflicts, as each script operates only within its own isolated folder. Productivity is maintained while reliability is protected through this spatial separation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each temporary folder provides a localized execution environment with its own unique filename and file set. This local quality ensures that resource usage is confined to each individual script's folder, preventing interference between concurrent script instances. The local isolation enables parallel processing without the resource conflicts that would otherwise occur.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If temporary files are created during script execution within hot folders, then script operations are enabled, but the hot folder picks these files for processing causing incorrect behavior

Engineering Contradiction:

Improvescript execution capabilityVSAvoidprocessing accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system segments file processing by separating temporary files into distinct temporary folders from the hot folder. Scripts can create and manipulate temporary files within their isolated folders without these files being picked up by the hot folder's processing mechanism. This segmentation enables script execution capability while maintaining processing accuracy by preventing incorrect file handling.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The temporary folder serves as an intermediary that captures temporary files created during script execution. It acts as a buffer between the script's file creation operations and the hot folder's processing logic, ensuring that temporary files are not mistakenly processed by the hot folder. This intermediary structure resolves the contradiction by maintaining both script operation capability and processing accuracy.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12450019B2Management of printing operations using enhanced hot folders

Publication Date: 2025.10.21 KYOCERA DOCUMENT SOLUTIONS INC

AI summary

Printing operations may use a hot folder. The hot folder includes printing instructions that are applied to print jobs within the hot folder. A file for the print job is stored in the hot folder. More than one file can be retained. The hot folder invokes a script to be executed on the file. A temporary folder is created corresponding to the file. The file is stored in the temporary folder. The temporary folder has a unique filename. The script is executed within the temporary folder and the execution is monitored to its completion. When the script is done executing, the temporary folder is deleted. Separate temporary folders are generated for each file in the hot folder.