Hi all, having more API to access and retrieve more information about tenants and users is necessary, but it isn't enough.
For example, suppose you have to develop a simple servlet, you need to retrieve tenant information from HttpServletContext or from HTTP header, I don't know, after that I have to access to stratos services in order to retrieve information about tenants. Matteo Cusmai On Sat, Jun 14, 2014 at 7:47 AM, Imesh Gunaratne <im...@apache.org> wrote: > 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 >
