Hi, thanks for the quick responses. I do feel tempted to implement it =). I am planning to get my hands dirty with Apache Edgent and RPi's and the feature that I described is the first that I will need. By now I am listing all the features that I will need in my small project and if my supervisor agrees with my idea I will go towards this way.
Best Regards, Felipe *--* *-- Felipe Gutierrez* *-- skype: felipe.o.gutierrez* *--* *https://felipeogutierrez.blogspot.com <https://felipeogutierrez.blogspot.com>* On Mon, Nov 19, 2018 at 2:15 AM Gayashan Amarasinghe < gayashan.amarasin...@gmail.com> wrote: > Hi Felipe, > > I had this simple source below that I had implemented before for some > testing. It might be of some use to you. The library I used is: > <dependency> > <groupId>com.github.oshi</groupId> > <artifactId>oshi-core</artifactId> > <version>3.4.2</version> > </dependency> > > You can read from the source and send it to an upper layer via MQTT > connector or some other method as Chris and Julian has mentioned. > > import org.apache.edgent.function.Supplier; > > import oshi.hardware.Sensors; > import oshi.hardware.platform.linux.LinuxSensors; > /** > * Read current CPU temperature > */ > public class CPUTempSensor implements Supplier<Double> { > @Override > public Double get() { > Sensors sensors = new LinuxSensors(); > return sensors.getCpuTemperature(); > } > } > > Best, > Gayashan > > > On Mon, Nov 19, 2018 at 5:58 AM Julian Feinauer < > j.feina...@pragmaticminds.de> wrote: > > > Hi, > > > > I'm a bit late tot he party. > > Thinking about it, it's a pretty obvious requirement, to have some > > statistics about the jvm reported regularly. > > I think it should be pretty easy to spin up a Source Component for that, > > e.g., using the library noted by chris. > > This source could the be polled repeatedly with whatever frequency you > > want. > > > > If you like to do so, chris or I can give you some further hints about > > that as we both already implemented sources for edgent. > > > > Best > > Julian > > > > Am 18.11.18, 12:51 schrieb "Christofer Dutz" <christofer.d...@c-ware.de > >: > > > > Hi Felipe, > > > > If you want to access CPU, Memory and Disk usage, you could have a > > look at this library: > > <dependency> > > <groupId>org.fusesource</groupId> > > <artifactId>sigar</artifactId> > > <version>1.6.4</version> > > </dependency> > > > > I am using this in another project and it's working nicely. I'm using > > is in a Scala Akka Actor, but it shouldn't be difficult to see how to use > > it in Java: > > > > > https://github.com/chrisdutz/RAPIRO/blob/master/server/telemetry/src/main/scala/de/codecentric/iot/rapiro/telemetry/actors/TelemetryActor.scala > > ... but thinking about it ... I think it would be a great option to > > add a Edgent Source providing such data. > > Because with this, you could eventually create data-streams that > adapt > > to the load on the Edge device ... > > > > It shouldn't be hard to implement ... and as I posted in my reply on > > the other thread, I don't think Edgent currently has something like > that. I > > just did a quick full-text-search and couldn't find anything? > > > > Feel tempted to implement such a connector? We're currently trying to > > re-initiate the committer-base of Edgent and contributions like this > would > > be highly valued :-) > > > > Chris > > > > > > > > Am 18.11.18, 12:44 schrieb "Felipe Gutierrez" < > > felipe.o.gutier...@gmail.com>: > > > > Hi, > > > > On the Edgent documentations is mentioned: > > > > "You can send data from an Edgent application to your back-end > > system when > > you need to perform analysis that cannot be performed on the edge > > device, > > such as: > > > > Running a complex analytic algorithm that requires more > resources, > > such as > > CPU or memory, than are available on the edge device." ( > > https://edgent.apache.org/docs/overview) > > > > I understood that the Edgent daemon on the device is constantly > > monitoring > > its properties (CPU and memory) and this daemon decides to not > > perform the > > analytics on the RPi when it has lack of resource but perform on > a > > layer > > above. Is it right? > > > > How can I implement a program using Edgent to send this type of > > metadata to > > a layer above? Let's say I want to sent metadata regarding CPU, > > memory and > > storage usage from the RPi to an IoT gateway. > > > > Thanks, > > Felipe > > *--* > > *-- Felipe Gutierrez* > > > > *-- skype: felipe.o.gutierrez* > > *--* *https://felipeogutierrez.blogspot.com > > <https://felipeogutierrez.blogspot.com>* > > > > > > > > > > >
