* Support metrics downsampling.

* Fixed a check style error.

* New generated indicators for real backend system.

* Support cpm and new indicators.

* Fix CI and change document.

* Remove an useless line.

* Support new indicator core.

* Block 2 unaccessible methods.

* Add service call as manual indicator and refactor the core DIspatcherManager

* Add transfer time bucket methods.

* prepare to merge

* Support time bucket transfer.

* Refactor register and analysis modules.

* Fixed the startup error.

* Use annotation to instead of definition file.

* Storage and Persistence.

* Storage config.

* Fixed the CI failure.

* Sample operator code.

* Indicator aggregator framework.

* Provide some annotation for OAL.

* Remote module.

* Register service.

* Add apache license header.

* Ignore comments when load definition files.

* Sample operator code.

* Indicator aggregator framework.

* Provide some annotation for OAL.

* Receiver, aggregate, server finished.