aljaz/lightning-beer-tap
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Merge branch 'master' of ssh.gitlab.puzzle.ch:lightning/pos-websocket-bridge

Browse Source
This commit is contained in:
Aaron Schmocker
2018-10-11 22:21:55 +02:00
parent 280059e864 1f4ef1b59d
commit da77eddc08
12 changed files with 748 additions and 31 deletions
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2
.gitignore vendored
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@@ -3,6 +3,8 @@
!gradle/wrapper/gradle-wrapper.jar
nohup.out
websocket-bridge-0.0.1-SNAPSHOT.jar
.gradle
*.bak
### STS ###
.apt_generated

59
README.md
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@@ -1,18 +1,64 @@
# WebSocket Bridge for our LND enabled Beer Tap
# Lightning powered beer tap
This project consists of multiple parts. To make things easier the `application.sh` provides a frontend to control everything. The different parts of the project are documented below.
## Parts list
To build your own lightning powered beer tap you'll need the follwing parts. We got most of our parts from distibutors located in switzerland, but you can get them anywhere you want.
| **Partname** | **Partnumber** | **Price / CHF** | **Distributor** |
| :------------------------------ | --------------:| ----------------: | :------------------------ |
| Raspberry Pi 3 B+ | 10760 | 39 | pi-shop.ch |
| 32GB MicroSD Card | 6613018 | 29.9 | digitec.ch |
| Original Rpi 7" Touchscreen | 10266 | 79.9 | pi-shop.ch |
| PiggiPi 7’’ Display Mount | 10399 | 48.9 | pi-shop.ch |
| Raspberry Pi Relay Board | 10398 | 24.9 | pi-shop.ch |
| 24V AC Source (24W/50Hz) | 169-84-752 | 22.7 | distrelec.ch |
| Beer tap with solenoid valve | 08.00125 | 247.3 | schankanlagenhandel.eu |
| Bent faucet for beer tap | 08.00128 | 22.51 | schankanlagenhandel.eu |
## Installation
This is straightforward. If you bought an empty micro-sd card, just download the latest [Raspbian image](https://www.raspberrypi.org/downloads/raspbian/).
* Fire up `dd` to load the image to your card.
* Use `sudo raspi-config` to extend your partitions, start openssh and enable the gpios.
* Follow the guide on [how to secure you raspberry pi](https://www.raspberrypi.org/documentation/configuration/security.md)
* Once you've deployed your ssh key and secured your acces, clone this repo.
* Install the necessary software to your pi by executing the following commands:
```bash
sudo apt-get update
sudo apt-get install -y openjdk-8-jre openjdk-8-jdk unclutter vim
```
* Add your user to the group `gpio`
* You're all set and ready to go
# Aplication.sh start script
This script is used to start, stop or rebuild the application. Simple as that.
The websocket bridge will be automatically builded if you run `start` without a
previous build.
```bash
$ ./application.sh start # starts the dashboard and websocket bridge
$ ./application.sh stop # stops everything
$ ./application.sh build # rebuilds the java websocket bridge
```
# WebSocket Bridge
## build application
```
```bash
./gradlew build
```
## how to run
get the built application from ./build/libs
```
```bash
java -jar websocket-bridge-0.0.1-SNAPSHOT.jar --url=wss://ln-self-order-pos-dev.ose3.puzzle.ch/websocket/invoice?access_token= --topic=/topic/invoice --command=./dummy_command.sh
```
Options:
* url: the websocket to connect to
@@ -40,6 +86,7 @@ To execute this python module the user has to be part of the group `gpio`.
## how to run
```
python beerme.py --product=[large,small] [--test, --memo="asdf"]
```bash
$ python gpio_handler.py --product=[large,small] [--test, --memo="asdf"]
$ python gpio_handler.py --help
```

84
application.sh Executable file
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@@ -0,0 +1,84 @@
#!/usr/bin/env bash
# Java call parameters
WEBAPP="wss://ln-self-order-pos-dev.ose3.puzzle.ch/websocket/invoice?access_token="
OPTS="-Xms128M -Xmx128M -jar"
JARFILE="websocket-bridge-0.0.1-SNAPSHOT.jar"
JARPATH="websocket_bridge/build/libs/"
TOPIC="/topic/invoice"
COMMAND="./gpio_handler/gpio_handler.py"
usage(){
cat << EOF
Usage: $0 [OPTIONS]
This script handles all interactions with the lightning powered beertap.
OPTIONS:
start Initializes the device, starts the dashboard and web bridge
stop Stops all services
build Build or rebuild the java web bridge to the lightning node
EXAMPLES:
application restart
EOF
}
# Start all services on the beer tap device
app_start(){
# Check if the websocket bridge has been built
if [ ! -f $JARPATH$JARFILE ]; then
app_build
fi
# Start up the dashboard
source dashboard/dashboard.sh
# Hide mouse when still
#DISPLAY=:0 unclutter -idle 0.01 -root &
# Start websocket bridge, fork to background and no output
nohup java $OPTS $JARPATH$JARFILE --url=$WEBAPP --topic=$TOPIC --command=$COMMAND & >/dev/null 2>&1
}
# Stop all services
app_stop(){
echo "Killing all services..."
killall java
killall chromium-browser
killall unclutter
}
# Build or rebuild the java lighning node web bridge
app_build(){
echo "Building the websocket bridge please wait"
cd websocket_bridge && exec ./gradlew build >/dev/null 2>&1
}
# Argument parsing
case $1 in
start)
app_start
exit 0;
;;
stop)
app_stop
exit 0;
;;
build)
app_build
exit 0;
;;
restart)
app_stop
app_start
exit 0;
;;
*)
usage
exit 0;
;;
esac

4
gpio_handler/beerme.py → gpio_handler/gpio_handler.py
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@@ -1,11 +1,11 @@
#!/usr/bin/env python
# -*- coding:utf-8 -*-
#######################
###################
# P26 ----> r_ch1 #
# P20 ----> r_ch2 #
# P21 ----> r_ch3 #
#######################
###################
import RPi.GPIO as GPIO
import argparse

281
schematic/Beertap-cache.lib Normal file
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@@ -0,0 +1,281 @@
EESchema-LIBRARY Version 2.4
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$FPLIST
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#
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F3 "" 0 0 50 H I L CNN
ALIAS SFH617A-1 SFH617A-2 SFH617A-3 SFH617A-4 SFH617A-1X001 SFH617A-2X001 SFH617A-3X001 SFH617A-4X001
$FPLIST
DIP*W7.62mm*
$ENDFPLIST
DRAW
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# Relay:FINDER-40.51
#
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F3 "" 0 0 50 H I C CNN
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$ENDFPLIST
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#
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F3 "" 0 0 50 H I L CNN
ALIAS BC140 BC141
$FPLIST
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$ENDFPLIST
DRAW
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#
# power:+3.3V
#
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DRAW
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DRAW
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#
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DRAW
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#
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DRAW
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#
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#End Library

1
schematic/Beertap.kicad_pcb Normal file
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@@ -0,0 +1 @@
(kicad_pcb (version 4) (host kicad "dummy file") )

43
schematic/Beertap.pro Normal file
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@@ -0,0 +1,43 @@
update=Do 11 Okt 2018 14:34:52 CEST
version=1
last_client=eeschema
[general]
version=1
RootSch=
BoardNm=
[pcbnew]
version=1
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BoardOutlineThickness=0.100000000000
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[cvpcb]
version=1
NetIExt=net
[eeschema]
version=1
LibDir=
[eeschema/libraries]
[schematic_editor]
version=1
PageLayoutDescrFile=
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274
schematic/Beertap.sch Normal file
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@@ -0,0 +1,274 @@
EESchema Schematic File Version 4
LIBS:Beertap-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "Lightning Beertap"
Date "2018-10-11"
Rev "v1.0"
Comp "Puzzle ITC"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
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1 6900 2650
1 0 0 -1
$EndComp
Wire Wire Line
5850 3700 5850 3950
Wire Wire Line
6300 3300 6250 3300
Wire Wire Line
6900 2650 6900 2750
Wire Wire Line
6750 2750 6900 2750
Connection ~ 6900 2750
Wire Wire Line
6900 2750 6900 3300
Wire Wire Line
6450 2750 6250 2750
Wire Wire Line
6250 2750 6250 3300
Connection ~ 6250 3300
Wire Wire Line
6250 3300 5850 3300
Text GLabel 3450 3650 0 50 Input ~ 0
P26
Wire Wire Line
3450 3650 3850 3650
Connection ~ 3850 3650
Text Notes 5400 4650 2 50 ~ 0
230V / 50Hz
Text Notes 4900 2250 0 50 ~ 0
Relay board
Wire Wire Line
4300 4600 4300 4800
Wire Wire Line
4300 4800 4750 4800
Wire Wire Line
4100 4600 4100 5200
Wire Wire Line
4100 5200 4750 5200
Wire Notes Line
3150 2350 3150 4200
Wire Notes Line
3150 4200 7050 4200
Wire Notes Line
7050 4200 7050 2350
Wire Notes Line
7050 2350 3150 2350
Wire Wire Line
5550 4800 6300 4800
Wire Wire Line
8150 4600 8150 5200
Wire Wire Line
5550 5200 8150 5200
Wire Wire Line
6300 3700 6300 4800
Wire Wire Line
6900 3800 8150 3800
Wire Wire Line
8150 3800 8150 4300
NoConn ~ 6900 3600
$EndSCHEMATC

BIN
schematic/output.pdf Normal file
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19
start_application.sh
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@@ -1,19 +0,0 @@
#!/usr/bin/env bash
# Java call parameters
WEBAPP="wss://ln-self-order-pos-dev.ose3.puzzle.ch/websocket/invoice?access_token="
OPTS="-Xms128M -Xmx128M -jar"
JARFILE="websocket-bridge-0.0.1-SNAPSHOT.jar"
JARPATH="websocket_bridge/build/libs/"
TOPIC="/topic/invoice"
COMMAND="./gpio_handler/beerme.py"
# Enable dashboard
source dashboard/dashboard.sh
# Hide mouse
DISPLAY=:0 unclutter -idle 0.01 -root &
# Enable websocket bridge
nohup java $OPTS $JARPATH$JARFILE --url=$WEBAPP --topic=$TOPIC --command=$COMMAND &

10
websocket_bridge/src/main/java/ch/puzzle/lnd/websocketbridge/MyStompSessionHandler.java
View File

@@ -57,10 +57,14 @@ public class MyStompSessionHandler extends StompSessionHandlerAdapter {
}
private void executeCommand(InvoiceDTO invoice) throws IOException, InterruptedException {
logger.info("Command : " + command);
String memoArg = "--memo=\"" + invoice.getMemo() + "\"";
String productsArg = "--products=" + invoice.getOrderedProducts();
logger.info("Command: " + command + ", Args: " + memoArg + ", " + productsArg);
ProcessBuilder pb = new ProcessBuilder(command, "--memo=\"" + invoice.getMemo() + "\"",
"--products=" + invoice.getOrderedProducts());
ProcessBuilder pb = new ProcessBuilder(command, memoArg, productsArg);
Map<String, String> env = pb.environment();
env.put("PUZZLE_POS", "beerPos");
pb.directory(new File("./"));

2
websocket_bridge/src/main/java/ch/puzzle/lnd/websocketbridge/WebsocketBridge.java
View File

@@ -95,7 +95,7 @@ public class WebsocketBridge implements Runnable, DisposableBean {
session.get().isConnected();
connected = true;
}catch(HttpServerErrorException | ExecutionException e) {
logger.info("Connection Error", e);
logger.error("Connection Error", e);
// do try again
}
}