Dynamic Dataloaders

[florianraiber]

Hi,
i want do register dynamic batch dataloaders. Is there some hidden extension point to do this?

Thanks,
Florian

[paulbakker]

What is a dynamic batch dataloader?

[florianraiber]

We use the @DgsCodeRegistry to create fetchers at runtime. As discussed here: DGS doc.
But we want our fetchers to use dataloaders of type MappedBatchLoaderWithContext. For each fetcher we can also create a dataloader at runtime, but we do not find a way to register them.

In other words: It's a dataloader registered at runtime. :-)

[florianraiber]

I solved my issue implementing a graphql-java fetcher and using graphql.schema.DataFetchingEnvironment#getDataLoaderRegistry().register(<name>,<loader>).

[paulbakker]

sorry, I missed your previous comment. What you're doing is the correct thing, that's basically what we're doing internally in the framework as well.

[ellebrecht]

I tried registering auto-generated MappedBatchLoaders dynamically at runtime according to the instructions above, in order to get rid of the static boilerplate code annotated with @DgsDataLoader.
The DataLoaders are sucessfully registered in com.netflix.graphql.dgs.DgsDataFetchingEnvironment.getDataLoaderRegistry(). They are never run however, and queries using them always time out.
I can only suspect it has something to do with scheduling. Anything I'm missing here?
Also, would you consider offering a way to cleanly register DataLoaders dynamically at runtime through the DGS API?

[voronovmax]

Hi @ellebrecht, have you succeeded to fix the issue? I came across the same.