Hello Antoine, thanks, I'll come up with some PR in that direction then.

Also, may be the issue #58[0] some kind related to my use case?

[0]: https://github.com/apache/incubator-tuweni/issues/58

On Sun, Feb 14, 2021 at 11:29 PM Antoine Toulme <anto...@toulme.name> wrote:
>
> An interface to BlockchainRepository makes sense, and you general approach 
> sounds good.
>
> Cheers,
>
> Antoine
>
> > On Feb 14, 2021, at 17:19, Diego L.L. <dieguit...@gmail.com> wrote:
> >
> > 
> > Hi Tuweni users,
> >
> > I'm building a component to stand between a node and the outside world, 
> > with the intention to prevent certain Transaction (0x02) messages to reach 
> > the node if they don't satisfy a given set of conditions.
> >
> > This component only requires to be able to maintain a rlpx channel open 
> > with its peers but I would like to rely the state/blocks storage to a 
> > trusted node.
> >
> > I was able to successfully connect a VertxRLPxService to a peer but It was 
> > instantly disconnected because it was unable to answer GetBlockHeaders 
> > (0x03) properly.
> >
> > I was willing to give a try to implement a custom BlockchainRepository to 
> > inject into the VertxRLPxService that resolves each call through JSON-RPC 
> > calls, but then I realized it's not an interface and also kind of coupled 
> > to Lucene.
> >
> > Of course I haven't faced how I would instrument the messages yet, but I'm 
> > trying baby steps, being the first one to keep the channel open with the 
> > peer.
> >
> > So, my questions here would be if I'm on the right path for this component 
> > I want to build, and also if you are open to contributions on adding the 
> > mentioned abstraction for the BlockchainRepository.
> >
> > With kind regards.
> > --
> > diego
>


-- 
diego

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