Archivematica BitCurator

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Proposed BitCurator micro-services interactions with Archivematica.

[edit] Transfer

Micro-service Description
BitCurator - Image source media

Create image
Log device information

User starts transfer by imaging the source media at the beginning of the transfer process. Image is an Archivematica transfer type.
Approve Transfer

Set file permissions

This is the approval step that moves the transfer into the Archivematica processing pipeline.
Verify transfer compliance

Set file permissions
Move to processing directory
Set transfer type
Remove hidden files and directories
Attempt restructure for compliance
Verify transfer compliance

Moves the transfer to a processing directory based on selected transfer type (standard, zipped bag, unzipped bag, DSPace export or maildir). Verifies that the transfer conforms to the folder structure required for processing in Archivematica and restructures if required. The structure is as follows: /logs/, /metadata/, /metadata/submissionDocumentation/, /objects/.
Rename with transfer UUID

Rename with transfer UUID

Directly associates the transfer with its metadata by appending the transfer UUID to the transfer directory name.
Include default Transfer processingMCP.xml

Include default Transfer processingMCP.xml

Adds a file named processingMCP.xml to the root of the transfer. This is a configurable xml file to pre-configure processing decisions. It can configure workflow options such as creating transfer backups, quarantining the transfer and selecting a SIP creation option.
Assign file UUIDs and checksums

Assign file UUIDs to objects
Assign checksums and file sizes to objects

Assigns a unique universal identifier and sha-256 checksum to each file in the /objects/ directory.
Verify transfer checksums

Verify metadata directory checksums

Checks any checksum files that were placed in the /metadata/ folder of the transfer prior to moving the transfer into Archivematica.
Generate METS.xml document

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 locations 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. A copy of the METS file is automatically added to any SIP generated from the transfer.
Extract packages

Extract packages
Extract attachments

Extracts objects from any zipped files or other packages. Extracts attachments from maildir transfers.
Scan for viruses

Scan for viruses

Uses ClamAV to scan for viruses and other malware. If a virus is found, the transfer is automatically placed in /sharedDirectoryStructure/failed/ and all processing on the transfer is stopped.
Clean up names

Sanitize object's file and directory names
Sanitize Transfer name

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.
BitCurator - Capture and extract image metadata

Extract filesystem metadata (DFXML)
Capture techMD
Export metadata to METS

Image metadata is captured and extracted to the METS document for the transfer.
Characterize and extract metadata

Characterize and extract metadata
Identify Files ByExtension
Load labels from metadata/file_labels.csv

Identifies and validates formats and extracts object metadata using the File Information Tool Set (FITS). Also identifies file extensions, which are used for selecting normalization paths.
Complete transfer

Index transfer contents
Set file permissions
Move to completedTransfers directory

Indexes transfer contents, then marks the transfer as complete.
Create SIP from Transfer

Check transfer directory for objects
Create SIP(s)
Create SIP from transfer objects

This is the approval step that moves the transfer to the SIP packaging micro-services (Ingest).

[edit] Ingest

Micro-service Description
BitCurator - Analyse image

Feed image filesystem information into Bulk Extractor (or other tool)
Output annotated feature file for review
Generate XML reports for file distribution, sensitive information, etc.

Allows user to analyse image reports and metadata.
BitCurator - Create SIP(s)

User choice to make one SIP from one image without any changes
User choice to make one SIP from multiple images without any changes
User choice to extract files/directories from image to make one or more SIP(s)
User choice to tag some files/directories as 'sensitive' or other' and create SIP(s) from one or more images
Possible other option(s)???

Allows user to make a decision whether to make 1 IMAGE = 1 SIP, use tags to identify sensitive information in SIP(s) or extract files and directories from the image rather than keeping the image as a whole.
Verify SIP compliance

Set file permissions
Move to processing directory
Verify SIP compliance

Verifies that the SIP conforms to the folder structure required for processing in Archivematica. The structure is as follows: /logs/, /metadata/, /metadata/submissionDocumentation/, /objects/.
Rename SIP directory with SIP UUID

Rename SIP directory with SIP UUID

Directly associates the SIP with its metadata by appending the SIP UUID to the SIP directory name.
Include default SIP processingMCP.xml

Include default SIP processingMCP.xml

Copies the processing config file added to the transfer in Include default Transfer processingMCP.xml, above, to the SIP.
Remove cache files

Remove cache files

Removes any Thumbs.db files.

Check for Service directory
Check for Access directory
Find options to normalize as
Create DIP directory
Normalize access
Normalize preservation
Remove files without linking information (failed normalization artifacts etc.)
Create thumbnails directory
Normalize thumbnails
Verify checksums generated on ingest
Approve normalization

Determines which normalization options are available for the SIP and presents them to the user as choices. Normalizes (i.e. generates preservation and/or access copies) based on selection. Thumbnail files are also generated during this micro-service.
Process submission documentation

Check for submission documentation
Copy transfer submission documentation
Move to processing directory
Set file permissions
Assign file UUIDs to submission documentation
Assign checksums and file sizes to submissionDocumentation
Extract packages in submission documentation
Sanitize file and directory names in submission documentation
Scan for viruses in submission documentation
Characterize and extract metadata on submission documentation
Identify Files ByExtension
Normalize submission documentation to preservation format

Processes any submission documentation included in the SIP and adds it to the /objects/ directory.
Prepare DIP

Copy thumbnails to DIP directory
Copy METS to DIP directory
Set file permissions
Generate DIP

Creates a DIP containing access copies of the objects, thumbnails and a copy of the METS file.
Upload DIP

Upload DIP

Allows the user to choose to upload the DIP to either ICA-AtoM or CONTENTdm.
Upload DIP to ICA-AtoM

Upload DIP
Move to the uploadedDIPs directory

The user uploads the DIP to a selected description in ICA-AtoM.
Upload DIP to CONTENTdm

Restructure DIP for CONTENTdm upload
Select upload type (Project Client or direct upload)
Select target CONTENTdm server
Get list of collections on server
Select destination collection
Upload DIP to contentDM
Move to the uploadedDIPs directory

The user uploads the DIP to a selected description in CONTENTdm.
Prepare AIP

Copy transfers metadata and logs
Remove files without linking information (failed normalization artifacts etc.)
Verify checksums generated on ingest
Generate METS.xml document
Index AIP contents
Prepare AIP
Select compression algorithm
Select compression level
Compress AIP
Set bag file permissions
Removed bagged files

Creates an AIP in Bagit format. Indexes the AIP, then losslessly compresses it.
Store AIP

Move to the store AIP approval directory
Store AIP
Store AIP location
Store the AIP

Moves the AIP to /sharedDirectoryStructure/www/AIPsStore/ or another specified directory. Once the AIP has been stored, a copy of it is extracted from storage to a local temp directory, where it is subjected to standard BagIt checks: verifyvalid, checkpayloadoxum, verifycomplete, verifypayloadmanifests, verifytagmanifests.
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