Can't sync Uni V3 pool

[olegggatttor]

Hey! I am trying to sync Uni V3 pools on Polygon, but always getting Middleware Error (⠦ Syncing AMMs...Error: Middleware error).

I am using basic alchemy node.

Code sample (very similar to one in examples):

use dotenv::dotenv;
use amms::{
    amm::{
        factory::Factory, uniswap_v2::factory::UniswapV2Factory,
        uniswap_v3::factory::UniswapV3Factory,
    },
    sync,
};
use ethers::{
    providers::{Http, Provider},
    types::H160,
};
use std::{str::FromStr, sync::Arc};


#[tokio::main]
async fn main() -> eyre::Result<()> {
    dotenv().ok();
    //Add rpc endpoint here:
    let rpc_endpoint = std::env::var("POLYGON_RPC_ENDPOINT")?;
    let provider = Arc::new(Provider::<Http>::try_from(rpc_endpoint)?);

    let factories = vec![
        //Add UniswapV3
        Factory::UniswapV3Factory(UniswapV3Factory::new(
            H160::from_str("0x1F98431c8aD98523631AE4a59f267346ea31F984")?,
            0,
        )),
    ];

    //Sync pairs
    sync::sync_amms(factories, provider, Some("my_poly_checkpoint.pt"), 100).await?;

    Ok(())
}

What am I doing wrong?

[0xOsiris]

Syncing from a checkpoint is not stable with V3 currently, this should only be done with V2/Vaults since the current logic isn't syncing the mint/burn logs from the last synced block on the checkpoint to the current chain head, the liquidity positions will be outdated on the pools. Does it sync without a checkpoint?

[olegggatttor]

@0xOsiris haven't checked yet. As I understood, I have to sync from 0 block every time I run the program, then?

[0xKitsune]

We are releasing a significant refactor of the library with the upcoming 0.7.0 release. If you are still experiencing this issue after these changes have been upstreamed to main, feel free to open an issue!

#235 for reference