CMIS: An Open API for Managing Content
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This talk gives an overview of CMIS and the Alfresco API. Originally presented at GlueCon 2013 and updated for Alfresco Day Sydney in August of 2013.
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CMIS: An Open API for Managing Content
- 1. CMIS: An Open API for Managing Content Jeff Potts Chief Community Officer
- 2. 80% of the content in an Enterprise is unstructured
- 3. Managing & collaborating on files is a pain Where is the latest version? Who changed it last? What changed? Which project is this related to? Who should be allowed to read? To make changes? How long do we have to keep this? Can I get this in another format? I’m done with this, what happens next?
- 4. So we write apps that help deal with content archives.nyphil.org my.alfresco.com Alfresco iOS Client
- 5. But files are a strange beast Don’t work well as BLOBs in an RDB • Can’t be indexed • Can’t be streamed • Subject to size limitations File systems alone aren’t rich enough Neither are Amazon S3 buckets
- 6. That’s where a content repository comes in RDB (Metadata) File System (Files) FileProtocols (WebDAV,FTP,etc.) API Repository Content Object
- 7. Not just basic file sharing User Interface Persistence/Data Model/Metadata Business Processes/Workflow Library Services (Upload/Download, V ersioning, & Check- in/Check-out) Security Full-text Search Transforms/Renditions/ Thumbnails Tagging/Categorization Authoring tool integration Remote API Scheduler Comments/Ratings/Acti vity Streams
- 8. The Problem: Until now, each repo had its own API API API API My Custom Application Third-Party Systems Most organizations have multiple repositories! One-off integration One-off integration One-off integration
- 9. An industry-wide spec is born Managed by OASIS Broad vendor support and adoption 1.0 out now, 1.1 coming soon http://bit.ly/PnAb77
- 10. CMIS specification Domain Model: Repository, Folder, Document, ACL, Relati onship, Object Type, Secondary Type*, Item* Binding: Web Services, AtomPub, Browser (JSON)* Query Language: Subset of SQL-92 *New in CMIS 1.1
- 11. Reference implementation Client libraries, server frameworks, development tools http://bit.ly/ex20BT
- 12. Getting started with CMIS Grab a CMIS client from Apache Chemistry Find a CMIS-compliant repository You need its “service URL” Connect to it with the OpenCMIS Workbench Optional: For Alfresco in the Cloud, you’ll need an API key from http://www.alfresco.com/develop
- 13. Demo! File upload Let’s load some images into Alfresco on- premise Then, let’s re-run that code to load some images into Alfresco in the Cloud Same CMIS calls, different authentication
- 14. Demo! Java & OpenCMIS, Servlets & JSPs The Blend • An example music mash-up site • Java Servlets & JSPs • Show it running against multiple CMIS repositories • Full source available from Manning http://bit.ly/U9npcF
- 15. The beauty of CMIS My Custom Application Third-Party Systems CMIS API Standard integration Standard integration
- 16. Alfresco Repository Deploys as a WAR to a servlet container Dependencies • 64-bit JDK • OpenOffice.org/LibreOffice • ImageMagick Happily runs on either physical or virtual hardware Alfresco Cloud is a multi-tenant SaaS offering of the same great repo
- 18. Folder, file, content and metadata manipulation and search Networks, sites, peo ple, comments, tags, activities, …
- 20. Alfresco Cloud API Considerations Rate limits • 5 requests/second, 10,000 requests/day (Dev) • 50 requests/second, 100,000 requests/day (Prod) No limit on # of applications Alfresco Cloud users own their content >= OpenCMIS 0.8.0-SNAPSHOT >= cmislib 0.5.1dev
- 21. Getting Help Docs: http://www.alfresco.com/develop Resources: • Alfresco API forum • #alfresco on freenode IRC • Alfresco Technical Discussion Google Group Source Code: • Code from DevCon Session • Spring Social Alfresco Library • Peter’s Grails Example • Jeff’s Java Examples & Python Examples
- 22. Read the book! Everything you need to know about CMIS 1.0 & 1.1 Lots of Groovy and Java examples Also covers Python, Android, & iOS Now on MEAP! 37%-off: 12cmisal
- 23. Conquer Content Chaos! Get your API key by May 31 and we’ll ship you this t- shirt! http://www.alfresco.com/develop
Editor's Notes
- Tons of content in companies today. Email is another big one.
- A document repository helps answer these questions and keeps you productive
- Alfresco’s cloud client, Alfresco’s mobile client, and an application one of Alfresco’s customers built are all examples of apps that help people deal with unstructured content. There are countless other examples.
- Look at your own file system to see the kinds of silly things we do when we try to use a blunt tool like a file system for things like document management. We try to add information to file names because that’s all we have to work with.
- Most content repositories look like this high-level diagram. Some differ in the protocols they support or exactly how files are stored (database versus file system, for example).
- Just like databases before standardized SQL, each content repository has its own proprietary API. Huge pain.
- Microsoft, EMC, IBM, SAP, Alfresco all are involved in this specification and have adopted it in their products.
- What’s in the spec at an extremely high level
- CMIS is the specification. Apache Chemistry is the reference implementation.
- Once you get the hang of that, write code using your favorite language
- Demo shows us starting with an empty Alfresco repositoryRunning the app from EclipseRunning a data loader to load some sample dataClicking around in the appRunning a python script to sync data from Alfresco to another vendor’s repoChanging a parameter in the application to point to the other repoCreate a new object in AlfrescoSync picks up the new object, puts it in the target repo, app sees it
- Now custom apps and integrations don’t have to rely on one-off integrations. They use a single API (CMIS) instead.
- REST API includes:SitesMembersFavoritesNetworksPeopleContainersActivitiesRatingsCommentsTags