Add support for querying solana RPC

[douggie]

Having programmatic access to various block chains proves useful (i.e. bitcoincore), especially to retrieve data which is then uses to then place orders on a dex or central exchange.

It would be very helpful, for me, and I am sure others, to be able to access various information from Solana via xchange.

The first implementation i would imagine the following methods exposed via an AccountService

• https://docs.solana.com/developing/clients/jsonrpc-api#gettokenaccountsbyowner
• https://docs.solana.com/developing/clients/jsonrpc-api#getbalance

Any objections for me to raise pull request for a new xchange/solana module that just implements the AccountService similarly to bitcoincore?

[earce]

This is really meant to query exchanges not blockchains.

Serum would be what you want to build querying around.

[douggie]

but we have examples of this in the project, such as bitcoincore.

[douggie]

Will just be a pain to fork the project, maintain the solana rest interface and keep it up to date.

[earce]

I haven't been a maintainer when those modules were added @timmolter can opine more on this topic, but I don't see why conflate this project with blockchain explorer libraries, they are fundamentally different things.

[douggie]

okey, and adding an account service to the serum project that queries solana adresses is a no go too?

[earce]

I think that would make sense because all Solana addresses can become addresses for exchange interaction. But I would be more curious about what that would turn into as more features are added.

I would leave it to @timmolter about where to draw the line, not sure if he cares about adding this functionality at all, this is just my opinion.

[douggie]

all I am interested is is balances for a given public key, so seems ok to raise a PR for that within the serum module.

[douggie]

i'll open another issue releated to just the serum changes.

[douggie]

#4097 for the serum changes

[timmolter]

Feel free to add this, as it's an addition to the serum DEX.