Object data storage

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1. Overview

The Business processes management subsystem uses Ceph object storage from the Distributed data storage subsystem to temporarily store digital document files uploaded by users through the UI forms or by business process service tasks.

A bucket for temporary storage of digital documents uploaded during business processes.

Object key generation pattern

process/{processInstanceId}/{UUID}

Table 1. Object metadata attributes
Attribute	Data type	Optionality	Description
`id`	String (UUID)	Required	Unique ID
`filename`	String	Required	File name
`checksum`	String	Required	File checksum
`fieldname`	String	Optional	Form field name
`formkey`	String	Optional	Name of the form from which the file was uploaded

Table 2. Document structure for storage
Data type	Description
byte[]	File content