Having fun with Raspberry and Apache projects

Having fun with Raspberry and Apache projects

• 1.
  Having fun withRaspberry(s) and Apache projects Jean-Frederic Clere, Manager, Red Hat
• 2.
  ● Who I am ● Howdoes it started ● OK now I have my demo for HTTP/2 what next. ● Get Astro Hat and have fun. ● Get another Hat and have another fun. ● More serious people using Industrino ● Questions AGENDA
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  Jean-Frederic Clere Red Hat Yearswriting JAVA code and server software Tomcat committer since 2001 Doing OpenSource since 1999 Cyclist/Runner etc Lived 15 years in Spain (Barcelona) Now in Neuchâtel (CH) Who I am I?
• 4.
  Trying to makea demo :D ● first localhost (failed) ● remote server (failed) ● try local + configurable: – Need a very small hardware: – Need real OS (no Arduino) – Fast – With WIFI How does it start?
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  ● Hardware: sdcard / wifi access point ● Most distributions requires for installation: – Screen – Keyboard – Solution: ● mount root ● remove autostart (tricky SystemD) ● add ssh keys ● Next yum install java/openssl/gcc etc… ● Done in a few hours. Raspberry PI3 / basics
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  ● Fedora 24 ●Drivers from https://github.com/raspberrypi/firmware ● wifi access point from (non free) https://raw.githubusercontent.com/RPi-Distro/firmware-nonfre e/master/ ● dhcp (server) ● bind (name server to make captive portal) ● Java Openjdk version "1.8.0" ● Tomcat apache-tomcat-8.5.6 (normal well on 80) ● http://10.0.0.201/ Raspberry PI3 / basics
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  ● HTTP/2 ● Tomcat-8.5.6(bin tar) ● Tomcat-native-1.2.10 (sources compiled on the Raspberry) ● Openssl 1.0.2j (from Fedora 24) ● http://10.0.0.239:8080/ (normal tomcat) ● http://10.0.0.239:8080/http2.html ● https://10.0.0.239:8443/http2.html https normal ● https://10.0.0.239:8002/http2.html https HTTP/2 ● So play with latency: – tc qdisc add dev eth0 delay 85ms 20ms (to get something that isn't localhost). – tc qdisc del dev eth0 root (remove it). – tc qdisc add dev eth0 root netem delay 185ms 120ms Raspberry PI3 / demo
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  ● Hats… ● lotexperimentation boxes ● Use Astro Hat ● Sensors: – Magnetometer – Humidity sensor – Temperature – Accelerometer – Joystick – And a DISPLAY!!! Let’s start the fun!
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  ● Servlet ● FrameBuffer ● HTLM5 scripts ● Read the display / write / reset etc ● Note the following: – Openjdk no JIT compiler (slow). – Openjdk (arm version: memory map file ~ broken) – Or frame buffer problem. ● Use RandomAccessFile First Tomcat fun
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  ● http://10.0.0.239:8080/demo-1.0-SNAPSHOT/FrameBuffer First Fundemo
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  ● Broker easyto collect information ● The Raspberry library are in Python ● Easy to make STOMP (on the PI) – Topic to send temperature in the example. – Queue on the PI to display a message ● Websocket STOMP on the client – html page with java script – jquery – stomp ActiveMQ fun
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  ● First theclient (java script): http://10.0.0.201/client.html ● bin/activemq console ● http://10.0.0.201:8161/admin/ (the activeMQ console admin/admin) ● The object Raspberry have STOMP python application running. (autostarted): ● root@localhost ROOT]# ps -ef | grep pytho ● root 371 1 0 17:28 ? 00:00:07 /usr/bin/python3 -Es /usr/sbin/firewalld --nofork --nopid ● root 2007 1 1 18:09 ? 00:00:01 /usr/bin/python /root/tomcatPI/python/sendtemprecvmess.py ● root 2047 745 0 18:11 pts/0 00:00:00 grep --color=auto pytho ActiveMQ demo
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  ● Based onArduino but for electricians. ● Powered with 24 volts ● No OS programmed via USB ● Industrial format ● To control pumps, heaters etc ● Mesures 2 tempatures ● Displays stuff via a web page. ● Partially OpenSource /OpenHardware :-( Serious stuff with Industruino
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  ● Internet ofThings (IoT). ● http://mynewt.apache.org/ ● https://edgent.apache.org/ ● Problems with hardware: – Partially OpenSource /OpenHardware :-( – Hard to explain to the players the Apache Way Apache hardware?
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  ● PI 3+ memory + power = 2 lunchs ● http://mynewt.apache.org/ ● https://edgent.apache.org/ ● Blog: http://jfclere.blogspot.com.es/ ● Github: https://github.com/jfclere/tomcatPI ● Mail: jfclere@gmail.com Do it your self?
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  ● THANK YOU!!! Questions