Arrowhead_OPC-UA

This project is based on the Eclipse Milo (tm) OPC-UA stack. It provides the possibility to integrate an existing OPC-UA Server with Consumers in an Arrowhead Framework local cloud. In essence, the system is a Provider that allows Consumers to read and write OPC-UA variables over a REST api. The Provider works in the following way:

1. The Provider will connect to an OPC-UA server and register all OPC-UA Variables beneath a chosen Node to the Service Registry.
2. The Provider then exposes a REST API for reading and writing (integer values only) these variables. In order to read a variable, just use the service URI in the Service Registry (leave the "value" query parameter empty). In order to write a variable, add your desired value to the "value" query parameter.

NOTE! All variables below the chosen Node are assumed to be read/write, but the code should work even if they are read-only provided that no writes are attempted.

How to use

Requirements

• Java JRE/JDK 8+
• Maven 3.5+
• Arrowhead core services running, for more info goto core-java
• Client-java built, for more information goto client-java

This project uses Maven. In order to use it, first download or clone this repository. Then in the root folder of run: mvn install

Setup and run

1. Download or clone the repository.
2. Edit the /provider/conf/default.conf file to match your Arrowhead Core Services.
3. Select a Node in your OPC-UA server that will serve as a root. All found Variable Nodes below this root will be added to the Arrowhead Service Registry and exposed via a REST api.
4. Input your OPC-UA server address and your selected root Node in FullProviderMain.java. (/provider/src/main/java/eu/arrowhead/client/provider/FullProvider.java) These are member variables named (found almost at the top): private String opcServerAddress, = "Niklass-MacBook-Pro.local:53530/OPCUA/SimulationServer"; private int rootNodeNamespaceIndex = 5; private String rootNodeIdentifier = "85/0:Simulation";
5. Goto the root folder and run: mvn clean install

To run your Provider (same procedure for Consumer), go to provider/target folder and run: java -jar provider-4.0.jar (add -auth if you want to automatically add the Consumer to the intra_cloud authorization)