Step 4: Obtaining Data from DIS

Function

You can retrieve data from DIS when needed.

Sample Code

The example code file is the ConsumerDemo.java file in the \dis-sdk-demo\src\main\java\com\bigdata\dis\sdk\demo directory decompressed from the huaweicloud-sdk-dis-java-X.X.X.zip package. The compression package is downloaded from the DIS SDK.

Running the Consumer Application

If information similar to the following appears, data has been successfully retrieved from DIS:

14:55:42.954 [main] INFOcom.bigdata.dis.sdk.DISConfig - get from classLoader
14:55:44.103 [main] INFOcom.bigdata.dis.sdk.util.config.ConfigurationUtils - get from classLoader
14:55:44.105 [main] INFOcom.bigdata.dis.sdk.util.config.ConfigurationUtils - propertyMapFromFile size : 2
14:55:45.235 [main] INFOcom.bigdata.dis.sdk.demo.ConsumerDemo - Get stream streamName[partitionId=0] cursor success : eyJnZXRJdGVyYXRvclBhcmFtIjp7InN0cmVhbS1uYW1lIjoiZGlzLTEzbW9uZXkiLCJwYXJ0aXRpb24taWQiOiIwIiwiY3Vyc29yLXR5cGUiOiJBVF9TRVFVRU5DRV9OVU1CRVIiLCJzdGFydGluZy1zZXF1ZW5jZS1udW1iZXIiOiIxMDY4OTcyIn0sImdlbmVyYXRlVGltZXN0YW1wIjoxNTEzNjY2NjMxMTYxfQ
14:55:45.305 [main] INFOcom.bigdata.dis.sdk.demo.ConsumerDemo - Get Record [hello world.], partitionKey [964885], sequenceNumber [0].
14:55:45.305 [main] INFOcom.bigdata.dis.sdk.demo.ConsumerDemo - Get Record [hello world.], partitionKey [910960], sequenceNumber [1].
14:55:46.359 [main] INFOcom.bigdata.dis.sdk.demo.ConsumerDemo - Get Record [hello world.], partitionKey [528377], sequenceNumber [2].