Tuesday, September 6, 2011

How to use StratosLive Column ( Family Data ) Store Service.

WSO2 CSS is Column ( Family Data ) Store based on Apache Cassandra . WSO2 CSS  can deploy with any WSO2 Carbon based product and it is available as a service in StratosLive  the PaaS offering of WSO2.
It is very easy to use CSS as a data store with widely available connectors like java based Hector and other thrift based connectors. StratosLive supports Hector API to communicate with the Cassanda based back-end CSS cluster. External applications can use StratosLive PaaS column data store feature with any Cassandra connector.
StratosLive app developers have to use tenant information to authenticate in the connection with CSS data store. Tenant admin can create tenant and authorize the user for data store access.
Check the full sample in OT SVN.
This sample create connection to StratosLive CSS as an external application. It writes random data to StratosLive CSS keyspace and read and output date via stdout.
Instructions to build and run the sample.
Build the project with Maven
Take a copy of the source using svn
mvn clean install
Build the project with dependency libraries
mvn clean assembly:assembly -o
Execute the program
java -jar target/org.wso2.carbon.cassandra.examples-3.2.1-jar-with-dependencies.jar
Written by risenfall
September 3, 2011 at 12:01 pm
Posted in FOSS, WSO2, Carbon, NoSQL
Tagged with , , ,

Column ( Family Data ) Store Service in WSO2 StratosLive

StratosLive PaaS supports several internal data stores like column ( family data ) store service , relational data store service and external data sources like Amazon DS and Amazon S3. Also users can use external data sources via Web Services.
WSO2 introduces CSS in the StratosLive PaaS to support webscale data generated by users deployed applications and the PaaS itself.
WSO2 Stratos CSS is based on Apache Cassandra. Cassandra is modified to run in WSO2 Carbon platform which is an OSGI environment. Stratos CSS 1.0.0 is shipped with Stratos 1.5.1. Users can install it with WSO2 private cloud deployments. CSS related features can be deploy with any carbon standalone product and get full features.
StratosLive has separate CSS cluster deployed to store tenant keyspaces. StrtosLive Data Service Server ( DSS ) contains the user interfaces to manage keyspaces.
CSS is a multi-tenanted and it works with users in private Stratos deployments.
WSO2 CSS 1.0.0 features.
1. Manage (create / delete / modify ) keyspaces
2. Share Keyspaces with in users
3. Create Indexes
4. Monitor Keyspace
WSO2 CSS has easy user interface to manage keyspaces and users can use CSS to manage external keyspaces. Users can use WSO2 CSS as a Cassandra management user interface.
List Keyspaces

List Keyspace information

Create a Keyspace for a tenant.

Create Column Family

Create Column and Set Indexes

Share Keyspace

WSO2 Stratos PaaS Column ( Family ) data support will improve with the CSS based data services and CQL support in next CSS releases.

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