On Thu, Jun 19, 2014 at 12:35 PM, Nirmal Fernando <nirmal070...@gmail.com> wrote:
> I think we should go for databases. > Else, a non binary method supported in registry, such as rxt or simple name-value pairs. > > > On Thu, Jun 19, 2014 at 12:26 PM, Udara Liyanage <ud...@wso2.com> wrote: > >> Hi Chris, >> >> In json also if there is a it will assign the default value for non >> existing variables when converting from json to java object structure. >> Still if there is a considerable change in object structure, we have to >> perform additional work in migration. >> >> Say we have introduced an variable x, which links to y in another class >> so on, then we have to do additional work, otherwise it is in a >> inconsistent state. >> >> >> On Thu, Jun 19, 2014 at 12:20 PM, chris snow <chsnow...@gmail.com> >> wrote: >> >>> Hi Udara, I'm not sure of the situation with JSON, but when using XML >>> it is possible to evolve a schema as long as changes are done in a >>> backward compatible way. For example, if you add an optional field, >>> the parsing code will be able to read xml created with and without the >>> field. However, IIRC java object serialisation is much more rigid and >>> this won't work. >>> >>> On Thu, Jun 19, 2014 at 6:45 AM, Udara Liyanage <ud...@wso2.com> wrote: >>> > Hi Imesh/Dinesh, >>> > >>> > Though we used a readable json/xml/text still we can't migrate >>> seamlessly? >>> > When migrating we have to read the old json and convert it it the new >>> object >>> > structure. >>> > Could you please explain how making it readable helps to migrate >>> seamlessly. >>> > >>> > >>> > >>> > >>> > >>> > On Wed, Jun 18, 2014 at 2:19 PM, Imesh Gunaratne <im...@apache.org> >>> wrote: >>> >> >>> >> Hi Dinesh, >>> >> >>> >> Great! Please provide your thoughts on the changes required in >>> registry >>> >> persistence logic as you progress. >>> >> >>> >> Thanks >>> >> >>> >> >>> >> On Wed, Jun 18, 2014 at 12:27 PM, Dinesh Bandara <dine...@wso2.com> >>> wrote: >>> >>> >>> >>> Hi, >>> >>> >>> >>> When I started work on [1] and I thought to persist cartridge >>> >>> configuration in JSON format in Stratos Manager's registry and >>> observed the >>> >>> above behavior which does not provide the readability of existing >>> artifacts. >>> >>> Will work on [2] >>> >>> >>> >>> [1] https://issues.apache.org/jira/browse/STRATOS-568 >>> >>> [2] https://issues.apache.org/jira/browse/STRATOS-664 >>> >>> >>> >>> Thanks >>> >>> >>> >>> >>> >>> On Wed, Jun 4, 2014 at 10:18 AM, Imesh Gunaratne <im...@apache.org> >>> >>> wrote: >>> >>>> >>> >>>> Hi All, >>> >>>> >>> >>>> In Stratos 4.0.0 Stratos Manager, Cloud Controller and Autoscaler >>> store >>> >>>> their artifacts in registry in binary format (Java objects are >>> serialized >>> >>>> and stored). This might cause problems when migrating an existing >>> Stratos >>> >>>> deployment to a newer version with changes in above artifacts. >>> >>>> >>> >>>> Therefore it would be better if we could change this format to JSON >>> or >>> >>>> something similar which could be easily read and updated if the >>> definitions >>> >>>> of the artifacts change in a newer Stratos version. >>> >>>> >>> >>>> More importantly we might need to create tasks in JIRA to prepare >>> >>>> migration scripts if we do any modifications to the above artifacts >>> once >>> >>>> 4.0.0 release is done. >>> >>>> >>> >>>> https://issues.apache.org/jira/browse/STRATOS-664 >>> >>>> >>> >>>> Thanks >>> >>>> >>> >>>> >>> >>>> -- >>> >>>> Imesh Gunaratne >>> >>>> >>> >>>> Technical Lead, WSO2 >>> >>>> Committer & PPMC Member, Apache Stratos >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> -- >>> >>> Dinesh Bandara >>> >>> Software Engineer >>> >>> WSO2 Inc.; http://wso2.com >>> >>> lean.enterprise.middleware >>> >>> >>> >> >>> >> >>> >> >>> >> -- >>> >> Imesh Gunaratne >>> >> >>> >> Technical Lead, WSO2 >>> >> Committer & PPMC Member, Apache Stratos >>> > >>> > >>> > >>> > >>> > -- >>> > >>> > Udara Liyanage >>> > Software Engineer >>> > WSO2, Inc.: http://wso2.com >>> > lean. enterprise. middleware >>> > >>> > web: http://udaraliyanage.wordpress.com >>> > phone: +94 71 443 6897 >>> >>> >>> >>> -- >>> Check out my professional profile and connect with me on LinkedIn. >>> http://lnkd.in/cw5k69 >>> >> >> >> >> -- >> >> Udara Liyanage >> Software Engineer >> WSO2, Inc.: http://wso2.com >> lean. enterprise. middleware >> >> web: http://udaraliyanage.wordpress.com >> phone: +94 71 443 6897 >> > > > > -- > Best Regards, > Nirmal > > Nirmal Fernando. > PPMC Member & Committer of Apache Stratos, > Senior Software Engineer, WSO2 Inc. > > Blog: http://nirmalfdo.blogspot.com/ >
