Merritt is the digital preservation repository for the University of California, available to libraries, academic departments, laboratories and other organizational units within UC.
- For the latest Merritt documentation, see the wiki.
- Manifest Validation Tool
- Manifest Validation Tool with Unit Tests
%%{init: {'theme': 'neutral', 'securityLevel': 'loose', 'themeVariables': {'fontFamily': 'arial'}}}%%
graph TD
RDS[(Inventory DB)]
UI("Merritt UI")
click UI href "https://github.com/CDLUC3/mrt-dashboard" "source code"
ING(Ingest)
click ING href "https://github.com/CDLUC3/mrt-ingest" "source code"
ST(Storage)
click ST href "https://github.com/CDLUC3/mrt-store" "source code"
STACC(Storage - Access)
click STACC href "https://github.com/CDLUC3/mrt-store" "source code"
INV(Inventory)
click INV href "https://github.com/CDLUC3/mrt-inventory" "source code"
CLOUD(("Cloud Storage"))
click CLOUD href "https://github.com/CDLUC3/mrt-cloud" "source code"
LDAP[/LDAP\]
ZFS[/ZFS Working Storage/]
ZOO>Zookeeper]
click ZOO href "https://github.com/CDLUC3/mrt-zoo" "source code"
EZID(EZID Service)
click EZID href "https://ezid.cdlib.org/" "service link"
BROWSER[[Browser]]
subgraph flowchart
BROWSER --> |ingest or retrieval| UI
UI --> |authorization| LDAP
RDS --> UI
UI --> |"file or ingest manifest"| ING
ING --> |queue job| ZOO
ING --> |check obj lock| ZOO
ZOO --> |start job| ING
ING -.-> |local id request| INV
ING --> EZID
ING --> |download content| ZFS
ING --> |"sync deposit"| ST
ST --> CLOUD
ZFS --> ST
ZOO --> INV
INV -.-> |retrieve storage manifest| ST
INV --> RDS
UI ---> |retrieval req| STACC
STACC --> |retrieval req| CLOUD
CLOUD -.-> |presigned URL| STACC
STACC -.-> |presigned URL| UI
CLOUD -.-> |presigned retrieval| BROWSER
end
style CLOUD fill:#77913C
style RDS fill:#F68D2F
style LDAP fill:cyan
style ZOO fill:cyan
style EZID fill:cyan
classDef FOCUS stroke:red,stroke-width:5px,fill:yellow
graph TD
N2T[N2T Service]
click N2T href "https://n2t.net/" "service link"
UI[Merritt UI]
Permalink[/Merrit UI Permalink/]
UI --> |contains| Permalink
Permalink --> N2T
N2T -.-> |resolves to| EZID
EZID -.-> |resolves to| UI
Code Repositories
- Ruby
- Java
%%{init: {'theme': 'neutral', 'securityLevel': 'loose', 'themeVariables': {'fontFamily': 'arial'}}}%%
graph TD
CLOUD(("Cloud Storage"))
click CLOUD href "https://github.com/CDLUC3/mrt-cloud" "source code"
RDS[(Inventory DB)]
AUD(Audit)
click AUD href "https://github.com/CDLUC3/mrt-audit" "source code"
REP(Replication)
click REP href "https://github.com/CDLUC3/mrt-replic" "source code"
subgraph flowchart
RDS --> AUD
RDS --> REP
CLOUD --> AUD
CLOUD --> REP
REP --> CLOUD
end
style CLOUD fill:#77913C
style RDS fill:#F68D2F
Code Repositories
Code Repositories
- Java
- Java and Ruby
- Merritt ZK (created in 2024)
- Ruby
- SSM Gem - Shared with other UC3 services
- Merritt Atom - Nuxeo processing for ingest
- Uses Ruby Ingest
- Java
- Ruby
- Admin Tool
- Merritt End to End Tests
- Merritt Integration Test Images
- Merritt Crons Jobs
- Merritt Consistency reports
- Merritt OpenSearch Visualizations
- Merritt Object Health analysis
- Docker
- Build Support
- Other