我正在处理AWS Cloudtrail log analysis的进程,我被困在一行中提取JSON,
这是我的表定义。
CREATE EXTERNAL TABLE cloudtrail_logs (
eventversion STRING,
eventName STRING,
awsRegion STRING,
requestParameters STRING,
elements STRING ,
additionalEventData STRING
)
ROW FORMAT SERDE 'com.amazon.emr.hive.serde.CloudTrailSerde'
STORED AS INPUTFORMAT 'com.amazon.emr.cloudtrail.CloudTrailInputFormat'
OUTPUTFORMAT 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
LOCATION 's3://XXXXXX/CloudTrail'
如果我运行select elements from cl1 limit 1
,则会返回此结果。
{"groupId":"sg-XXXX","ipPermissions":{"items":[{"ipProtocol":"tcp","fromPort":22,"toPort":22,"groups":{},"ipRanges":{"items":[{"cidrIp":"0.0.0.0/0"}]},"prefixListIds":{}}]}}
我需要将此结果显示为虚拟列,例如
| groupId | ipProtocol | fromPort | toPort| ipRanges.items.cidrIp|
|---------|------------|--------- | ------|-----------------------------|
| -1 | 0 | | | |
我正在使用AWS Athena,我尝试了横向视图,并且get_json_object在AWS中无效。
它是一个外部表
答案 0 :(得分:2)
select json_extract_scalar(i.item,'$.ipProtocol') as ipProtocol
,json_extract_scalar(i.item,'$.fromPort') as fromPort
,json_extract_scalar(i.item,'$.toPort') as toPort
from cloudtrail_logs
cross join unnest (cast(json_extract(elements,'$.ipPermissions.items')
as array(json))) as i (item)
;
ipProtocol | fromPort | toPort
------------+----------+--------
"tcp" | 22 | 22