Hi Sanjiva, Thank you very much for pointing this out. Yes I think I was not clear enough in my first response.
What I meant was there are no restrictions in Stratos for writing Multi-Tenant applications using Stratos APIs or libraries (or more specifically Carbon). Developers could use any of the available technologies to implement Multi-Tenancy features in applications and create cartridges including the required libraries. However I forgot to mention that those applications could retrieve tenant information from the connected userstore or Stratos Manager since Stratos does manage tenants for all the services. Thanks Sameera for the details, but I think we might not be able to use some of the above APIs like Carbon Context and Carbon Caching if the application is not written using Carbon. I think from Stratos perspective if the application is not using Carbon still we could retrieve tenant information from four different channels: 1. Applications can directly communicate with the connected Userstore. 2. Applications can talk to the REST API and get tenant information. However I believe we have not exposed much methods to do this in 4.0.0 release [1]. 3. Applications can talk to Admin Services in Stratos Manager and retrieve tenant information. Since Stratos Manager is implemented using Carbon and uses Carbon user management features for managing tenants, these services could provide all the information required. 4. Applications can retrieve tenant information from the tenant topic in message broker, however we have limited information here at the moment [2]. If the application is written using Carbon, except for above four channels it could retrieve more information from the Carbon runtime. WDYT? [1] https://cwiki.apache.org/confluence/display/STRATOS/4.0.0+Tenant+Operations [2] https://cwiki.apache.org/confluence/display/STRATOS/4.0.0+Stratos+Pub-Sub+Communication Thanks Imesh On Sat, Jun 14, 2014 at 8:21 AM, Sameera Jayasoma < sameera.madus...@gmail.com> wrote: > Noted Sanjiva. I will include slides on Stratos APIs, specially user > management, registry/repository, CarbonContext API, Caching, Clustering API > etc. > > > Matteo, you can leverage a bunch Stratos level APIs to build your > multi-tenant SaaS app. Here are some the available APIs. Let us know your > requirements. > > Identity and Security API - Manage users, roles, permission, > authentication and authorization functionalities > Registry/Repository API - crud api for repository. > Caching API - Java caching API > CarbonContext API - CarbonContext is the entity which provides the > runtime related contextual information of the current executing thread. Any > code running in Stratos can retrieve following information from the > CarbonContext API. > > 1) Tenant information who is executing the code. > 2) Logged in user information, if any. > 3) Application information, if any. > > Thanks, > Sameera. > > > On Sat, Jun 14, 2014 at 7:38 AM, Sanjiva Weerawarana <sanj...@wso2.com> > wrote: > >> Imesh IMO your answer is not correct :-). Stratos has a set of APIs that >> allows a super tenant app to be an multi-tenant SaaS app - for example the >> admin app is written like that. What Matteo is asking is how to use Stratos >> as the foundation of a SaaS application! >> >> Sameera you're giving a talk on this at WSO2Con next week in Barcelona >> :-). Maybe you can answer and then share the slides after. >> >> Cheers, >> >> Sanjiva. >> >> >> On Thu, Jun 12, 2014 at 8:13 PM, Matteo Cusmai <cusmaimat...@gmail.com> >> wrote: >> >>> Hi Imesh, >>> thanks a lot for the answer and for the useful links. >>> >>> However, I know a bit WSO2 and I know it provides useful capabilities to >>> develop a multi tenant application. >>> But suppose that I cannot use it, how can I retrieve tenant information >>> from my java code? >>> >>> >>> Matteo Cusmai >>> >>> >>> On Thu, Jun 12, 2014 at 4:38 PM, Imesh Gunaratne <im...@apache.org> >>> wrote: >>> >>>> Hi Matteo, >>>> >>>> According to Stratos architecture there are no requirements for using >>>> certain APIs/libraries for developing applications. It's completely loosely >>>> coupled. Applications can be developed according to the requirements of the >>>> cartridge they run on. >>>> >>>> If you are looking at developing a Multi-Tenant application, AFAIK >>>> Tomcat does not provide Multi-Tenancy features out of the box. However you >>>> could use Carbon framework [1] for that. Yes I could see JBoss/Hibernate >>>> also provide Multi-Tenancy features [2]. >>>> >>>> [1] >>>> http://wso2.com/library/blog-post/2013/09/creating-a-saas-app-with-the-multi-tenant-carbon-framework-step-1/ >>>> [2] https://community.jboss.org/wiki/Multi-tenancyDesign >>>> >>>> Thanks >>>> >>>> >>>> On Thu, Jun 12, 2014 at 11:33 AM, Matteo Cusmai <cusmaimat...@gmail.com >>>> > wrote: >>>> >>>>> Hi all, >>>>> I am going to develop a java saas application, and I would like to use >>>>> stratos with tomcat, or jboss after have developed a jboss cartdrige. >>>>> >>>>> Which are the java api/lib that I have to use in order to develop a >>>>> multi tenant application? >>>>> >>>>> Thanks in advance, >>>>> Matteo. >>>>> >>>> >>>> >>>> >>>> -- >>>> Imesh Gunaratne >>>> >>>> Technical Lead, WSO2 >>>> Committer & PPMC Member, Apache Stratos >>>> >>> >>> >> >> >> -- >> Sanjiva Weerawarana, Ph.D. >> Founder, Chairman & CEO; WSO2, Inc.; http://wso2.com/ >> email: sanj...@wso2.com; office: (+1 650 745 4499 | +94 11 214 5345) >> x5700; cell: +94 77 787 6880 | +1 408 466 5099; voip: +1 650 265 8311 >> blog: http://sanjiva.weerawarana.org/; twitter: @sanjiva >> Lean . Enterprise . Middleware >> > > > > -- > Sameera Jayasoma > > blog: https://blog.sameera.org > twitter: https://twitter.com/sameerajayasoma > flickr: http://www.flickr.com/photos/sameera-jayasoma/ > -- Imesh Gunaratne Technical Lead, WSO2 Committer & PPMC Member, Apache Stratos
