Archivematica 0.8 Micro-services

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This page describes the key micro-services that are undertaken during transfer and ingest.

Transfer tab

Micro-service	Description
Approve transfer	Once the transfer has all its digital objects and has been formatted for processing, the user selects "Transfer complete" from the Actions drop-down menu.
Verify transfer compliance	Verifies that the transfer conforms to the folder structure required for processing in Archivematica. The structure is as follows: /logs/, /metadata/, /metadata/submissionDocumentation/, /objects/.
Rename with transfer UUID	Adds a unique universal identifier to the transfer folder name.
Include default Transfer processingMCP.xml	Adds defaultTransferProcessing.xml file from /sharedDirectoryStructure/sharedMicroServiceTasksConfigs/ to the transfer directory. This xml file can configure workflow options such as creating transfer backups, quarantining the transfer and selecting a SIP creation option.
Workflow decision - create transfer backup	The user can choose to create a complete backup of the transfer in case transfer or ingest are interrupted or fail. The transfer backup is placed in /sharedDirectoryStructure/transferBackups/ and will automatically be deleted once the AIP has been moved into storage.
Assign file UUIDs to objects	Assigns a unique universal identifier to each file in the /objects/ directory.
Assign checksums and file sizes to objects	Assigns a sha-256 checksum to each file in the /objects/ directory and calculates file sizes.
Verify metadata directory checksums	Checks any checksum files that were placed in the /metadata/ folder of the SIP prior to ingest. Note that the filenames need to be named based on their algorithm: checksum.sha1, checksum.sha256, checksum.md5.
Generate METS.xml document	Generates a basic mets file with a fileSec and structMap to record the presence of all objects in the /objects/ directory and their location in any subdirectories. Designed to capture the original order of the transfer in the event the user chooses subsequently to delete, rename or move files or break the transfer into multiple SIPs. The mets file is automatically added to any SIP generated from the transfer.
Extract packages	Extracts objects from any zipped files or other packages.
Sanitize object's file and directory names	Some file systems do not support unicode or other special characters in filenames. This micro-service removes prohibited characters and replaces them with dashes. Original filenames are preserved in the PREMIS metadata.
Sanitize transfer name	Same as above except does it for the transfer folder name.
Scan for viruses	Uses ClamAV, parses the output and creates a PREMIS event. If a virus is found, the SIP is automatically placed in /sharedDirectoryStructure/watchedDirectories/failed/.
Characterize and extract metadata	Identifies and validates formats and extracts object metadata using the File Information Tool Set (FITS). Adds output to the PREMIS metadata.
Create SIP(s)	The user chooses among a number of SIP creation options. See the user manual for details.

Ingest tab

Micro-service	Description