Tag writing performance in Ignition custom module

Ignition
1

Hello,

I am using the following function to write tags to a tag manager given a map of tag paths and values:

public class TagValueWriter {

    public void writeTagValues(Map<String, Object> tagValues) throws TagWriteException {
        try {
            for (Map.Entry<String, Object> entry : tagValues.entrySet()) {
                GatewayHook.ourProvider.updateValue(entry.getKey(), entry.getValue(), QualityCode.Good);
            }
        } catch (Exception e) {
            throw new TagWriteException("Failed to write tag values", e);
        }
    }
}

This doesn't seem to be very efficient since it writes each tag individually, calling GatewayHook.ourProvider.updateValue each time. Is there a more optimal way to write all the tags in the map to the tag manager?

Thank you!

2

If your module provides a ManagedTagProvider this is the intended way to update tag values for tags it provides.

This is different than "writing tags" in general, which would be done via the TagManager interface.

3

Thanks for the response, @Kevin.Herron. So, to clarify, when using a ManagedTagProvider (which I do), there is no way to batch write all the tags or something like that? I am concerned about the performance of my module because, while my data source is updating every second, I am only seeing roughly every third update from my data source in a given tag.

For context, the tag provider has about 30,000 tags.

5

You aren't "writing" in the same way a tag write would, you're directly updating the source.

At this level a method that accepted a list of tags and values would just be doing a loop to process them anyway.