REST gateway access from perspective

Ignition
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1

Hello,

I would like to display (and possibly edit) the Read-Only setting of OPC UA servers in Perspective.

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I haven’t been able to find a corresponding tag in the System tag provider or any system function that would give me this information. Because of that, I believe my only option is to use the Gateway REST API. However, I’ve run into some HTTPS-related issues while trying to use it.

Before I spend more time troubleshooting that, I’d like to make sure there isn’t another way to access this setting. Did I miss something, or is the REST API my best option here?

Retrieve "History Driver" and "History Provider" for Remote Tag Providers
2

I think the REST API may be your only option.

3

This is likely also possible (though unsupported) via the configuration manager reached by the gateway context.

4

I found the following approach:

path = '/usr/local/bin/ignition/data/config/resources/core/ignition/opc-connection/LAB/config.json'
system.file.readFileAsString(path)

This works for reading the configuration, but it doesn’t seem like the right way to modify it. Or is there any way to trigger a configuration reload?

@pturmel which configuration manager are you referring to? Could you point me in the right direction or provide some resources where I can find more information?

5

This one: getConfigurationManager()

I recommend using my Integration Toolkit's system.util.toolkitCtx() to get started.

You are in SDK territory, so not officially supported. If you need a supported approach, stick with the exposed OpenAPI methods.

6

Hopefully as soon as 8.3.5, there's going to be a system.config scripting namespace that gives you general purpose CRUD across all resource types, plus a system.config.requestScan.

There's a REST API endpoint to do so as well.

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7

The right thing to do is to get your rest API access working.

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