Using an idl for tsfile similar to protobuf and we are fine. On Fri, 9 Oct 2020, 08:19 Xiangdong Huang, <[email protected]> wrote:
> > 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). > > IMO, letting IoTDB support more protocols does not bring disadvantages. If > someone implements any of them, it will be a good new feature of IoTDB. > > But another ambition from me is: if applications allow sending data to the > cloud (IoTDB) in batch, then sending TsFile directly, rather than data > points by the above protocols (Though there is no a good real word practice > up to now). > > 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 下午1:59写道： > > > > > > > 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 > > > > > > > > >
