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GENI Storage and Archive Service (GSAS)
- Participating Projects and Organizations
- Technical Contacts
- 1) GENI Policy for Sharing Research Results
- 2) Goals for GENI Storage and Archive Service (GSAS)
- 2) Overview of the GENI Storage and Archive Service (GSAS)
- 3) GENI ObjectDescriptor Schema
- 4) DataCite Schema
- 5) iRODS Design and Deployment
- 6) Access to GSAS from UserWorkspace using Experiment Management Tools
- 7) Access to GSAS from GEMINI I&M Tools
- 8) Access to GSAS from GIMI I&M Tools
- 9) Acceptance Tests
- 10) Tutorials and Experimenter Support
- A) Technical References
GENI Storage and Archive Service (GSAS)
Participating Projects and Organizations
Project 1663: Digital Object Registry (CNRI)
Project 1856: GIMI I&M Tools (UMass Amherst, RENCI and others)
Technical Contacts
Giridhar Manepalli (CNRI) (mailto:gmanepalli@cnri.reston.va.us / 703 620 8990)
Shu Huang (RENCI) (mailto:shuang@renci.org)
GPO System Engineer: Harry Mussman
GPO Software Engineer: Jeanne Ohren
1) GENI Policy for Sharing Research Results
CNRI is drafting a GENI policy for sharing research results with the community, that follows evolving community and NSF practice.
The GSAS will provide the mechanisms necessary to implement the policy.
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
1 | Establish GENI policy on sharing research results | |||||
1a | DRAFT policy ( 2 pages) | Larry/Giridhar | 6/15/13 | |||
1b | Review with GPO | Larry/Giridhar | 6/20/13 | |||
1c | Review with community | Larry/Giridhar | GEC17 (how?) | |||
1d | ||||||
1e |
2) Goals for GENI Storage and Archive Service (GSAS)
Goals for GSAS:
- A structured place to store all of the objects (artifacts) for an experiment, with descriptors (metadata), that is easy to access, with short to medium term storage, and the ability to search. (Note: this goes well beyond just measurement data objects.)
- A separate long-term archive, with controlled access from the outside world, using a DOI (handle) as a persistent identifier
- Include most of the functionality provided by the Measurement Data Archive (MDA) prototype, built by CNRI.
- Establish multiple federated iRODS services, starting at RENCI and UMass Amherst, and operate for GENI users (experimenters).
- Establish persistent accounts for each user, and use icommands to store and retrieve objects (artifacts) for each user in the storage service.
- Establish authentication for each user based on username/password, certificates, and also proxy (delegated) certificates.
- Establish a directory structure in the storage service for each user to accommodate multiple experiments, and a directory structure for each experiment (consider "bag") to include all objects (artifacts) associated with that experiment, including one or more descriptors (metadata) within XML files (following the GENI descriptor schema).
- Provide multiple interfaces (including icommand and web) to allow an authenticated user to view, search and curate their objects (artifacts).
- Provide interface to allow a user to define an object (artifact) to be archived (where the object (artifact) may range from a large directory to a single file), include a descriptor (following the GENI ObjectDescriptor Schema), assign a persistent Digital Object Identifier (DOI, or "handle"), and decide when to push it to archive service.
- Establish an archive service that provides long-term and reliable storage, with public access via a DOI from the global handle service.
- Include a search function in the archive service, so that an outside user can search for and then retrieve an object, but allow the object’s owner to disable search, so that an outside user needs the DOI of the object to retrieve it.
Goals for GENI ObjectDescriptor Schema:
- Useful for all types of objects, not just MeasurementData objects.
- Keep it simple, with the minimum number of mandatory fields.
- Where possible, values for fields should be automatically generated by Experiment Management Tools.
Use of “DataCite Schema for the Publication and Citation of Research Data”:
- When an object (artifact) is archived in the Archive Service with public access from the outside world via the Internet, using a DOI (handle) as a persistent identifier, and include descriptors (metadata) that follows DataCite Schema (ref)
2) Overview of the GENI Storage and Archive Service (GSAS)
Document:
An overview of the structure and use of the GSAS is contained in this document:
GENI Storage and Archive Service: Configuration of Service, Structure of Directories and Files, and Use Cases
1) Goals
2) Configuration
3) Use Cases
4) Structure of Directories and Files in the GSAS
5) Access to the Structure in GSAS
6) Adding Descriptors
7) Searching Structure in GSAS
8) Creating a Bag and a .tar File
9) Archiving an Object
10) Overview of v1.x GENI ObjectDescriptor Schemas
This document is based on the early Measurement Data Archive (MDA) service prototype developed by CNRI, and many discussions within the GENI I&M community.
Versions of document:
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
2 | "Configuration, Structure and Use Cases" document | |||||
2a | Review v1.1 | Group | 4/29/13 | completed | ||
2b | Draft v1.2 | Harry | 5/1/13 | completed | ||
2c | Review v1.2 | Group | 5/8/13 | completed | ||
2d | Review with GPO | Harry/Jeanne | ? | |||
2e | Review with GEMINI | Harry/Jeanne | ? | |||
2f | Review with GIMI | Harry/Jeanne | ? | |||
2g | ||||||
3 | Resolve design issues | |||||
3a | Issue 2.1: How are persistent accounts established for each user in iRODSs? | Shu, Jeanne, Tom | completed | Per GIMI workflow discussion: use POST to restful interface on iRODS | ||
3b | Issue 2.2: How are storage capacity limits established and enforced for each IRODS user? Are older objects (artifacts) flagged for removal? | Shu | ||||
3c | Issue 2.3: How are archive capacity limits established and enforced for each IRODS user? Are older objects (artifacts) flagged for removal? | Shu | ||||
3d | Issue 5.1: Where is the proxy certificate created? How is the proxy certificate transferred to the GEMINI Measurement Store service? | Ezra | ||||
3e | Issue 5.2: What happens if the proxy certificate expires? Is the user notified? How can they load an updated proxy certificate? | Ezra | ||||
3f | Issue 5.3: How is the target information transferred to the service? | Ezra | ||||
3g | Issue 5.4: How is the iticket transferred to the GIMI portal service? | Cong | completed | Per GIMI workflow discussion: init script gets, pushes | ||
3h | Issue 5.5: What happens if the iticket certificate expires? Is the user notified? How can they load an updated proxy certificate? | Cong | ||||
3i | Issue 5.6: How is all of the target information transferred to the service agent? | Cong | completed | Per GIMI workflow discussion: init script gets, pushes | ||
3j | Issue 6.1: Need to establish rules if there is a discrepancy in descriptors. | Shu | ||||
3k | Issue 6.2: Need to establish rules for changing or removing metadata.xml files. | Shu | ||||
3l | Issue 7.1: When using a browser in the Experiment Management Environment (or elsewhere) to view artifacts (files and directories) in the GSAS, how will the associated descriptors (metadata) will be displayed? | Shu | ||||
3m | Issue 8.1: After the bag and .tar file have been created and used, is there some cleanup that should be done? | Shu | ||||
3n | Issue 8.2: After changes have been made to directories and files, what is the process for recreating the bag and .tar file? | Shu | ||||
3o | Issue 10.1: Is there a way to derive the descriptors in an archive.xml file from descriptors in the other types of metadata.xml files, or at least an initial set of descriptors for the archive.xml file? | Giridhar | ||||
3p | ||||||
3q |
3) GENI ObjectDescriptor Schema
CNRI is developing a comprehensive GENI ObjectDescriptor Schema, that fully implements the schema outlined in the GSAS overview document.
Versions of .xsd schema:
Examples of metadata.xml files:
ArchiveofProject
ArchiveofExperiment
ArchiveofStep
ArchiveofArtifact
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
4 | "GENI ObjectDescriptor Schema" | |||||
4a | Review v1.1 | Group | 4/29/13 | completed | ||
4b | Issue v1.2 | Giridhar | 6/1/13 (or earlier?) | Need to include controlled vocabularies | ||
4c | Review with group | Giridhar | ? | |||
4d | Review with GPO | Giridhar | ? | |||
4e | Review with community | Giridhar | GEC17 | |||
4f |
4) DataCite Schema
When GENI research results are shared with the research community, they will use the DataCite metadata schema, which has been established for the research community.
References:
5) iRODS Design and Deployment
As part of the GIMI project, RENCI is developing and deploying iRODS, with special extensions to implement the GSAS, as specified in the overview document.
References:
iRODS fact sheet
iRODS overview
iRODS configuration
iRODS use cases
Plan:
011513 iRODS plan
041513 addendum to the iRODS plan
050113 addendum to the iRODS plan
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
5 | "iRODS" | |||||
5a | Establish multiple federated iRODS services, starting at RENCI and UMass Amherst, and operate for GENI users (experimenters) | Shu and Cong | GEC14 | completed | ||
5b | Establish persistent accounts for each user, use icommands to store and retrieve measurement data objects for each user in a storage service | Shu and Cong | GEC14 | completed | ||
5c | Establish authentication for each user based on certificates, and also proxy (delegated) certificates. | Shu and Jeanne | GEC15 | completed | ||
5d | Establish directory structure in storage service for each user to accommodate multiple experiments, and directory structure for each experiment (consider "bag") to include all objects (artifacts) associated with that experiment, including one or more descriptors (metadata) within XML files (following the GENI descriptor schema) | Shu, Harry and Giridhar | GEC15 | completed | ||
5e | Provide multiple interfaces (including icommand, restful http, and web) to allow authenticated user to view, search and curate their objects (artifacts) | Shu | GEC15 | completed | restful http can come later; or should we do it soon, to be used to create user accounts? | |
5f | Provide interface to allow user to define an object to be archived (where the object may range from a large directory to a single file), include a descriptor (following the GENI descriptor schema), assign a persistent Digital Object Identifier (DOI, or "handle"), and decide when to push it to archive service. | Shu | GEC16 | in progress | ||
5g | Establish an archive service that provides long-term and reliable storage, with access via a DOI from the global handle service, with access following a local policy included in archived object. (Include at least two policies: give the object to anyone, or give the object only to its owner.) | Shu | GEC17 | in progress, discussed with Antoine | Need example metadata.xml files, including key values. Should iRODS validate xml schema (syntax)? | |
5h | Add rules to process incoming descriptors in xml files, and store info in iCAT (3-4 weeks) | Shu, Antoine | GEC17 | |||
5i | Add rules to move object to public archive service, and make any changes (3-5 weeks) | Shu, Antoine | GEC18 | |||
5j | Integrate archive service into handle service (1 week) | Shu, Antoine | GEC18 | |||
5k | Provide interface to iRODS to allow GENI Experimenter Portal to create iRODS user accounts | Shu, Antoine | GEC17 | Should this use POST to restful interface? | ||
5l | "iRODS" | Shu | ||||
5m | "iRODS" | Shu |
6) Access to GSAS from UserWorkspace using Experiment Management Tools
As explained in the overview of the GSAS, an experimenter (user) can access the GSAS from their UserWorkspace using Experiment Management Tools
An "Experiment Artifact Management Tool" is required that includes:
- iclient to access the GSAS
- ability to manage the experimenter's artifacts, and push them to the GSAS
- ability to formulate descriptors, put them into metadata.xml files, and push them to the GSAS
- ability to create a bag and .tar file to form an object, and update them as needed
- ability to archive an object, and update archived objects
Who is going to prototype such a tool? part of GIMI project? when will it be available?
Versions:
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
6 | "Experiment Artifact Management Tool" | |||||
6a | who? | p/o Cong's work on GIMI init script? | ||||
6b | ||||||
6c | ||||||
6d |
7) Access to GSAS from GEMINI I&M Tools
As explained in the overview of the GSAS, a service acting on behalf of an experimenter (user) can access the GSAS using an agent holding a proxy certificate. This is the arrangement that is being used within the GEMINI I&M tools.
An early version of the agent is available, but it must now be extended to push all measurement data objects, and associated metadata, as specified in the overview of the GSAS. The issues identified in the overview must be resolved.
Versions:
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
7 | "GEMINI agent to access GSAS" | |||||
7a | Ezra | |||||
7b | ||||||
7c | ||||||
7d |
8) Access to GSAS from GIMI I&M Tools
As explained in the overview of the GSAS, a service acting on behalf of an experimenter (user) can access the GSAS using an agent holding a an iticket. This is the arrangement that is being used within the GIMI I&M tools.
An prototype version of the agent must be built, to push all measurement data objects, and associated metadata, as specified in the overview of the GSAS. The issues identified in the overview must be resolved.
Who will do this? Cong?
Versions:
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
8 | "GIMI agent to access GSAS" | |||||
8a | Cong | |||||
8b | ||||||
8c | ||||||
8d |
9) Acceptance Tests
Integrated acceptance tests must be done between all tools.agents and the GSAS.
Jeanne will coordinate.
Task list:
ID | Description | Who | Due | Status | Demos | Notes |
9 | "Integration of tools/agents with GSAS" | |||||
9a | Jeanne | |||||
9b | ||||||
9c | ||||||
9d |
10) Tutorials and Experimenter Support
A) Technical References
GSAS Configuration and Use Cases Figure (visio)
GSAS Configuration and Use Cases Figure (pdf)
I&M Tools: Basic Test/Tutorial/Experiment Storyboard
I&M Tools: Basic Test/Tutorial/Experiment Workflow
Attachments (39)
- 042613 v1.1_GENIObjectDescriptor Schema.docx (380.3 KB) - added by 12 years ago.
- GENIObject.xsd (9.2 KB) - added by 12 years ago.
- project1.xml (1.1 KB) - added by 12 years ago.
- Experiment1.xml (998 bytes) - added by 12 years ago.
- projectSerialized.xml (4.1 KB) - added by 12 years ago.
- Experiment1.2.xml (998 bytes) - added by 12 years ago.
- Artifact1.xml (900 bytes) - added by 12 years ago.
- ArchiveOfProject.xml (5.3 KB) - added by 12 years ago.
- ArchiveOfExperiment.xml (3.8 KB) - added by 12 years ago.
- ArchiveOfExperiment.2.xml (3.8 KB) - added by 12 years ago.
- ArchiveOfArtifact.xml (1.9 KB) - added by 12 years ago.
- Step1.xml (610 bytes) - added by 12 years ago.
- DataCite-MetadataKernel_v2.2.pdf (303.7 KB) - added by 12 years ago.
- DataCite-metadata.xsd (13.8 KB) - added by 12 years ago.
- gimi-irods-4-15-13b.docx (19.0 KB) - added by 12 years ago.
- 042913 v1.2_GENIObjectDescriptor Schema.docx (375.1 KB) - added by 12 years ago.
- 082112b_MDASrvc_Figures.vsd (3.2 MB) - added by 12 years ago.
- 091012d_GIMI_Figures.vsd (2.7 MB) - added by 12 years ago.
- 040313_GEMINI_Figures.vsd (2.3 MB) - added by 12 years ago.
- 042913_iRODS_Figures.vsd (1.4 MB) - added by 12 years ago.
- Visio-042913_iRODS_Figures.pdf (20.3 KB) - added by 12 years ago.
- 042913b v1.2_GENIObjectDescriptor Schema.docx (375.4 KB) - added by 12 years ago.
- gimi-irods-5-1-13b.docx (17.8 KB) - added by 12 years ago.
- Visio-050713_iRODS_Figures.pdf (20.1 KB) - added by 12 years ago.
- 050713_iRODS_Figures.vsd (1.4 MB) - added by 12 years ago.
- 051613_iRODS_Figures.vsd (1.4 MB) - added by 12 years ago.
- Visio-051613_iRODS_Figures.pdf (24.4 KB) - added by 12 years ago.
- 051613_GIMI_Figures.vsd (1.8 MB) - added by 12 years ago.
- Visio-051613_GIMI_Figures.pdf (137.8 KB) - added by 12 years ago.
- gimi-irods-5-9-13b.docx (16.7 KB) - added by 12 years ago.
- 042913c v1.2_GENIObjectDescriptor Schema.docx (376.1 KB) - added by 12 years ago.
- 060613 v1.3_GENIObjectDescriptor Schema.docx (386.1 KB) - added by 11 years ago.
- 060613schemaonly v1.3_GENIObjectDescriptor Schema.docx (29.4 KB) - added by 11 years ago.
- GENIObject-v1.3.xsd (13.9 KB) - added by 11 years ago.
- Artifact1.3.xml (1.1 KB) - added by 11 years ago.
- Experiment1.3.xml (925 bytes) - added by 11 years ago.
- Step1.3.xml (432 bytes) - added by 11 years ago.
- Project1.3.xml (913 bytes) - added by 11 years ago.
- ProjectSerialized1.3.xml (3.8 KB) - added by 11 years ago.