kezhenxu94 commented on issue #6: [Feature] Set GraphQL client and add service ls command URL: https://github.com/apache/skywalking-cli/pull/6#issuecomment-552094691 Tackling the time seems much more complicated than I thought, to clarify(which I think should be included in the command manual): - when `start` and `end` are both absent, `start = now - 30min` and `end = now`, namely past 30 minutes - when `start` and `end` are both present, they are aligned to same precision by truncating the more precise one, e.g. if `start = 2019-01-01 1234, end = 2019-01-01 18`, then `start = 2019-01-01 12, end = 2019-01-01 18` - when `start` is absent and `end` is present, will determine the precision of `end` and then use the precision to calculate `start`(by minus 30 units), e.g. `end = 2019-11-09 1234`, the precision is `MINUTE`, so `start = end - 30MIN = 2019-11-09 1204`; and if `end = 2019-11-09 12`, the precision is `HOUR`, so `start = end - 30HOUR = 2019-11-08 06` - when `start` is present and `end` is absent, will determine the precision of `start` and then use the precision to calculate `end`(by plus 30 units), e.g. `start = 2019-11-09 1204`, the precision is `MINUTE`, so `end = end + 30MIN = 2019-11-09 1234`; and if `start = 2019-11-08 06`, the precision is `HOUR`, so `start = end + 30HOUR = 2019-11-09 12` @wu-sheng can you confirm?
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