The OPC simulator is mainly used by Demo Apps to create a flow of OPCUA data that a OPCUA Client can subscribe to. It is typically used in the context of multi-container application.

See the Edge Reference App for an example of how it used in a docker-compose.yml file.

https://github.com/PredixDev/predix-edge-ref-app/blob/master/docker-compose.yml

In the config directory is the config file. There are 3 simulation types

[
    {"browseName": "Simulator.Device1.FLOAT1", "frequency": 10, "random": {"dataType": "Double", "min": 0, "max": 0.5, "precision": 4}},
    {"browseName": "Simulator.Device1.FLOAT2", "frequency": 1000, "counter": {"dataType": "Double", "start": 1.10, "min": 1.10, "max": 4.40, "increment": 1.10 }}
]

• boolean - not documented - see the code
• counter - on the frequency (in milliseconds) create a value starting at the start value and each value uses the increment from min to max
• random - on the frequency (in milliseconds) create a random value between min to max using the precision

node app.js

docker build -t predixedge/predix-edge-opcua-simulator:latest .

If your build machine is behind a proxy you will need to specify the proxies as build arguments. You can pull in the proxy values from the environment variables on your machine.

docker build --build-arg http_proxy=$http_proxy --build-arg https_proxy=$https_proxy -t predixedge/predix-edge-opcua-simulator:latest .

docker run predixedge/predix-edge-opcua-simulator:latest