The latest version for DAS is WSO2 Data Analytics Server 3.1.0. View documentation for the latest release.
WSO2 Data Analytics Server is succeeded by WSO2 Stream Processor. To view the latest documentation for WSO2 SP, see WSO2 Stream Processor Documentation.

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01
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Events are the lifeline of WSO2 CEP/DAS. They not only process data as events, but also interact with external systems using events. Event is a unit of data, and an event stream is a sequence of events of a particular type. The type of events can be defined as an event stream definition. The following sections explain how to work with events in WSO2 DAS

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Event stream definitions
Event stream definitions
Event stream definition


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02
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Definitions of the event streams are stored in the filesystem as deployable artifacts in the <PRODUCT _HOME>/repository/deployment/server/eventstreams/ directory as .json files. These are hot deployable files and can be added/removed when the server is up and running. A sample event stream definition is as follows.



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{
  "streamId": "org.wso2.test:1.0.0",
  "name": "org.wso2.test",
  "version": "1.0.0",
  "nickName": "TestStream",
  "description": "Test Stream",
  "metaData": [
    {
      "name": "ip",
      "type": "STRING"
    }
  ],
  "correlationData": [
    {
      "name": "id",
      "type": "LONG"
    }
  ],
  "payloadData": [
    {
      "name": "testMessage",
      "type": "STRING"
    }
  ]
}

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