GSN Starter Kit hands on experience

General
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Was thinking the same when typing it actually. Bit crazy days :slight_smile: I have one more idea what could be wrong. There may be a bug in one Lightchain RPC API.

I’ll get this to work one way or the other :slight_smile:

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It’s a hanging RPC endpoint which would explain the “ready” attr that is based on it and also the other issue with web3 hanging based on a similar code. Would be “funny” if my setup would be OK the whole time and there would be an issue in Lightchain RPC code. Should be fully Ethereum compatible but some APIs were disabled when we were making them work with Tendermint. Working on that atm.

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43

OMG I GOT IT WORKING. Hacking things here and there the current setup is still not optimal but that’s normal software evolution. Got the starter kit to work with Lightstreams custom network!

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Will report few more improvements, ideas and write a blog post about the full setup once I deploy everything properly to LS official test network Sirius.

GG! Thx for help guys. Idk who did some improvement in Tabookey relay-server 0.4.1 but they helped a lot. Also the improvements in new versions of oz js-helpers I was monitoring.

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I created a new improvement task https://github.com/OpenZeppelin/openzeppelin-gsn-helpers/issues/19 let me know WDYT @abcoathup @nventuro and others (can tag only 2)

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A post was split to a new topic: How to use the GSN with DAI?

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I FOUND THE ANOTHER ROOT EVIL ISSUE. This time on my side, in Lightchain blockchain as I suspected few days ago.

Due to performance issues in Lightstream’s Ethereum compatible filtering on a Sirius test network with 560 000 blocks, looping 6000 blocks to the past hangs forever. And this explains why the “Ready” attribute wasn’t working! Finally cracked after adding some extra logging!

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Changing this value to 1000 works.

PS, I had to hardcode it because is not configurable, reported a bug to tabookey: https://github.com/tabookey/tabookey-gasless/issues/224

PS2, in my previous posts I made it work on Ganache and Standalone (private local node with few blocks). Little load, that’s why it worked there.

Result:

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Now we are talking!

{"RelayServerAddress":"0x9db576853177397df3a8506a0af007bdd555ef0e","MinGasPrice":500000`000000,"Ready":true,"Version":"0.4.1"}

:slight_smile: :slight_smile: :slight_smile:

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47

Awesome, glad you got it working :confetti_ball: ! That block amount bug must’ve been painful to track.

Your feedback is extremely useful to us, please keep sharing your experiences as you delve deeper into your GSN application!

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48

And then it took me additional few hours to figure that there is another pooling mechanism on JS side when my “increase counter” UI was hanging.

Could we make this configurable in RelayClient?

const relay_lookup_limit_blocks = 1000;
abi_decoder.addABI(relayHubAbi);

NOW, finally the whole thing is setup and works on Lightstreams Sirius test network.

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RelayServer to SC: https://explorer.sirius.lightstreams.io/tx/0xc707a2818c84810ef01b9c9d6c3d0d87c13fa1096183ffc0084356caaeabd0ac

Done! Thx for support OZ team.

Now that I have the baseline working I can finally go to implement this feature to some specific app SC for our users :slight_smile:

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49

Good find! I opened an issue on the tabookey-gasless repo. We may soon trim some parts of the client our provider doesn't currently need, and patch these small issues as part of that.

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Hey guys, I just wanted to let you know the majority of the GSN integration into Lightstreams stack is done and I would like to personally thank you all for the support.

I wrote a quick article and in case you would like me to mention something specific or promote any particular part of OZ then let me know and I will definitely add it to the article!

Have a great week OZ/TabooKey teams!

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51

We are very happy you managed to get it working!!!

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52

@lukaslukac would you be interested in creating a Starter Kit to allow your users to get up and running with a complete working demo application on Lightstream?

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Thx Dennison.

That’s a good idea. What exactly do you have in mind? A OZ starter kit with a UI configured for Lightstreams like: https://github.com/OpenZeppelin/starter-kit-gsn living in OpenZeppelin Github organization or Lightstreams?

At the moment the only “starter-kit”, more like an example are the following 2 SCs and their tests:

Smart Vault’s ACL Factory

Sample Voter

1 Like