City Data Exchange & Analytics Middleware (CDX) for Smart Cities

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Architecture

Resources

About: http://www.rbccps.org/smart-city/
Detailed Documentation: https://cdx.readthedocs.io/en/latest/

Getting Started

This guide will help you to quickly get started with a single node instance of CDX and start publishing data from a device.

Install Docker
```
sudo apt-get install docker.io
```
Add permission to user
```
sudo usermod -a -G docker $USER
```
Logout and log back in.
Run ifconfig and note down the name of the interface you're connected to.

In the above example the interface name is enp9s0
Now run:
```
sudo nmcli device show enp9s0
```
Replace enp9s0 with your respective interface name. The output should be something like this

Note down the DNS from IP4.DNS section
Add DNS obtained in the previous step to the file /etc/docker/daemon.json If the file does not exist, create it. The entry should look something like this
```
{"dns": ["8.8.8.8", "8.8.4.4"]}
```
Add the obtained DNS to the above JSON array. So the final entry should look something like this:
```
{"dns": ["8.8.8.8","8.8.4.4","168.95.1.1"]}
```
Of course, the DNS would change according to your network.

Add DNS in /etc/default/docker file as follows:

DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4 --dns 168.95.1.1"

Restart Docker
```
service docker restart
```

CDX Installation

Clone CDX git repo
```
git clone https://github.com/rbccps-iisc/ideam.git
```
CDX repository comes with a default configuration file ideam.conf:
```
[APIGATEWAY]
https = 8443

[BROKER]
http = 12080
management = 12081
amqp = 12082
mqtt = 12083

[ELASTICSEARCH]
kibana = 13081

[WEBSERVER]
http = 14080

[LDAP]
ldap = 15389

[CATALOGUE]
http = 16080

[KONGA]
http = 17080

[VIDEOSERVER]
rtmp = 18935
hls = 18080
http = 18088

[PASSWORDS]
ldap = ?
broker = ?
cdx.admin = ?
database = ?
```
This file contains details about the ports used by different microservices. It also allows the user to configure passwords that should be used for certain services during installation. By default, the password fields in the config file is set to ?, which indicates that the system will generate random passwords during runtime.
Install CDX
```
cd ideam/
./install
```

Registering your first device

Once CDX has installed you can now start registering devices with it. Let's create a simple test device for the sake of illustration:
```
sh tests/create_entity.sh testStreetlight
```

This will give you the details of the registration

{
  "Registration": "success",
  "entityID": "teststreetlight",
  "apiKey": "EHQilai5cF_tNmWOwg-oiPdncmRPdfGCIhFHM85zDDW",
  "subscriptionEndPoint": "https://smartcity.rbccps.org/api/{version}/followid=teststreetlight",
  "accessEndPoint": "https://smartcity.rbccps.org/api/{version}/db?id=teststreetlight",
  "publicationEndPoint": "https://smartcity.rbccps.org/api/{version}/publish?id=teststreetlight",
  "resourceAPIInfo": "https://rbccps-iisc.github.io"
}

Publishing from your device

You can now publish data from this device using:
```
sh tests/publish.sh teststreetlight EHQilai5cF_tNmWOwg-oiPdncmRPdfGCIhFHM85zDDW
```
This will publish {"body": "testdata"} to the exchange teststreetlight.protected
That's it! You can similarly register more devices and apps with the middleware.

For detailed guides and resources visit https://cdx.readthedocs.io/en/latest/