Issue using TagProvider.writeAsync

Module Development
1

I am working on building a Gateway Module for Ignition version 8.0.15 and I am running into an issue when I try to write tags to a Tag Provider.

The record variable below is of type RecordData and context is of type GatewayContext.

List<TagPath> tagPaths = new ArrayList<>();
List<QualifiedValue> values = new ArrayList<>();

tagPaths.add(new BasicTagPath(record.topic));
values.add(new BasicQualifiedValue(record.value, QualityCode.Good, record.timestamp));

List<QualityCode> results = context.getTagManager().getTagProvider(tagProvider)
    .writeAsync(tagPaths, values, SecurityContext.systemContext()).get();

public class RecordData {
    public String topic;
    public Object value;
    public Date timestamp;
}

If I log out everything, this is what I get.

logger(tagPaths); // [[ACGE-23/level]]
logger(values); // [[0.85033414125612, Good, Thu Aug 27 22:34:31 UTC 2020 (1598567671005)]]
logger(results); // [Bad_Unsupported]

I don’t understand why I am getting back Bad_Unsupported. Looking through the javadocs, all I can find is the interface of the methods.

Any help would be greatly appreciated!

2

What kind of tag are you writing to?

3

I’ve tried it without the tag existing and as a memory tag.

4

Ah, don’t write QualifiedValues, write the actual value itself from record.value.

And don’t expect writing to a tag that doesn’t exist to succeed. The memory tag should work.

5

According the the javadocs writeAsync takes a List of QualifiedValues. Am I missing an overload or something?

6

Oops, you’re right. I was looking at the API for TagManager.

Try turning the log level for “tags.management.provider” to DEBUG and see if there’s any additional information after you write.

https://docs.inductiveautomation.com/display/DOC80/Diagnostics+-+Logs#Diagnostics-Logs-ChangingLoggingLevels

7

Set the logger to TRACE and this is the extra info I get:

Starting write, paths=[[NFBA-23/level]], values=[[0.85033414125612, Good, Thu Aug 27 22:34:31 UTC 2020 (1598567671005)]]

Async write of 1 values completed in 0 ms
8

Hmm. Is this just a standard tag provider? Not really sure what’s going wrong yet. Best guess is that the tag at path “NFBA-23/level” is not a standard memory tag but rather a folder or UDT or something else…

9

Oh, try creating your tag path like this instead. TagPathParser.parse(record.topic)

10

That did it! Thanks for all the help!