获取数据游标

参见初始化DIS客户端的操作初始化一个DIS客户端实例。

配置参数如下：

partitionId="shardId-0000000000"  
streamname=”dis-test1“ #已存在的通道名
5种游标设置使用参考如下：
# startSeq与AT_SEQUENCE_NUMBER/AFTER_SEQUENCE_NUMBER搭配使用
r = cli.getCursor(streamname, partitionId, cursorType='AT_SEQUENCE_NUMBER', startSeq="0")
# r = cli.getCursor(streamname, partitionId, cursorType='AFTER_SEQUENCE_NUMBER', startSeq="0")
# timestamp与AT_TIMESTAMP搭配使用
# r = cli.getCursor(streamname, partitionId, cursorType='AT_TIMESTAMP',timestamp=1554694135190)
# r = cli.getCursor(streamname, partitionId, cursorType='TRIM_HORIZON')
# r = cli.getCursor(streamname, partitionId, cursorType='LATEST')

配置好以上参数，执行getCursor_sample.py文件调用getCursor_test方法，响应结果示例如下：

1
2

200
{"partition_cursor": "eyJnZXRJdGVyYXRvclBhcmFtIjp7InN0cmVhbS1uYW1lIjoiSCIsInBhcnRpdGlvbi1pZCI6InNoYXJkSWQtMDAwMDAwMDAwMCIsImN1cnNvci10eXBlIjoiQVRfU0VRVUVOQ0VfTlVNQkVSIiwic3RhcnRpbmctc2VxdWVuY2UtbnVtYmVyIjoiMCJ9LCJnZW5lcmF0ZVRpbWVzdGFtcCI6MTUzMjQyNDg4NzE1NH0"}