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mint/burn logs from the last synced block on the checkpoint to the current chain head, the liquidity positions will be outdated on the pools.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?