Hi Xiangdong,
Yeah, for those devices can not run JVM and do not support TCP are not appropriate for The restful API approach. BTW, as you mentioned, if each device supports a different transport protocol, does IoTDB need to support this protocol accordingly?(like AMQP、CoAP、DDS、MQTT(already supported) and so on). Thanks, --------------------------------------- Houliang Qi On 10/9/2020 11:59，Xiangdong Huang<[email protected]> wrote： Hi Houliang, I am trying to consider the following scenario: We have a device (e.g., a robot arm), an edge gateway, and a cloud center. Let's just consider the first two roles: the device and the edge gate. The device collects data from its PLC, and may store the data locally for a short time, and then sends to the edge gateway. The edgeway collects data from the device and may store the data locally for a short time and then sends to the cloud. On both the device and the edgeway, they may have no ability to connect to another service by TCP, and have to save data locally because of some reasons. Yes they can call rest API in their programs, but if they can not run Java locally, then we can do nothing. But TsFile is a data exchange way as it stores binary data. Writing with C++, and sending the file to another role (who can run Java) and then we can run IOTDB there. Best, ----------------------------------- Xiangdong Huang School of Software, Tsinghua University 黄向东 清华大学 软件学院 Houliang Qi <[email protected]> 于2020年10月9日周五 上午11:20写道： Hi, Xiangdong |I have a crazy idea (but not sure whether it works), make TsFile cross-language. I have an immature idea. Why not turn TsFile into a restful micro-service that can provide read-write and other operations. Since Java is cross platform, as long as there is a Java virtual machine, you don't need to care about the language implementation of these embedded devices. Thanks, --------------------------------------- Houliang Qi On 09/24/2020 15:05，Xiangdong Huang<[email protected]> wrote： Hi, I have a crazy idea (but not sure whether it works), make TsFile cross-language. Now we can use Java to generate and query data from TsFile (Maybe we can also use C++ to do that by the effort of Giorgio). But how about Go, how about python? It will make the Tsfile really available on embedded devices if we can support those languages. And, how we maintain them if TsFile's structure is changed? (It is obvious that the file format will evolve time by time). So, a hard-work task is, implementing TsFile with different languages. A smart task is using some DSL to describe it and generating codes into different languages (at least generating part of codes). Is that a good task for the internship? Best, ----------------------------------- Xiangdong Huang School of Software, Tsinghua University 黄向东 清华大学 软件学院 Xiangdong Huang <[email protected]> 于2020年9月24日周四 下午2:19写道： Hi Giorgio, Thanks for raising this up. I notice the DDL is entened to 29th. It is a good chance. Any ideas? Best, ----------------------------------- Xiangdong Huang School of Software, Tsinghua University 黄向东 清华大学 软件学院 Giorgio Zoppi <[email protected]> 于2020年9月24日周四 上午2:18写道： Hi all, Apache Software Foundation has participated in the next round of Outreachy Internships (https://www.outreachy.org/). Can we send them some projects ? BR, Giorgio
