Problem I'm trying to solve: I'd like our app to run some logic when some onchain events happen. For example: send a Slack alert to our team after each NFT mint on a contract.

Thinking about sticking an event in a queue from our Ponder indexing functions

likes building things • https://alexgrover.me/links

We've used OZ Sentinel for this in the past but they don't support factory contracts, which we need.

@typedarray.eth would love to know if you guys have thought about this!

It seems like Ponder is not a perfect fit for this since events may get reindexed. It might be possible to record in the DB when jobs are enqueued for specific events, to prevent notifying again later. Not sure how much this would impact speed of indexing.

Yup, we've thought about this use case a lot. We're calling it "effect functions", tracking here (github.com/ponder-sh/ponder/issues/810).

We're still 100% focused on making Ponder the best possible tool for EVM app indexing, so it's not at the top of our priority list. I estimate we'll ship it ~2 months from now.

The queue approach *might* work, but I can't recommend it. With the feature described below, it'll be possible to simply import the Slack SDK and call that API directly from your Ponder app.

Building ponder.sh. EVM, TypeScript, open-source enjoyer.

awesome, subbed to the GH issue. looking forward to it!

The queue approach *might* work, but I can't recommend it. With the feature described below, it'll be possible to simply import the Slack SDK and call that API directly from your Ponder app.

https://warpcast.com/typedarray.eth/0x6b294535