Error Message: Query Timout Exceeded

1

Hello,

I am getting an error message when I use the Infura API. The error I receive says "Returned error: query timeout exceeded’. I did not receive any further information.

I am querying a large amount of information and I am relatively new to programming. What is the best way to respect the request limiter?

2

Hi Julian,

Can you let us know what is the api call that timeouts and how you do it (the relevant piece of code would help) ?

Thanks,
Traian

3

Hi Traian,

The relevant piece of code is below. It is a “deep forloop”. The method I call is getPastEvents on at least 6 different contracts.

Let me know if you would like me to provide any information.

let collect_filter_and_sort_events = async() => {
    try {
        let total_events = [];
        let liquidityGates = [CompoundLiquidityGateAddresses, AaveLiquidityGateAddresses, dYdXLiquidityGateAddresses, FulcrumLiquidityGateAddresses]
        let agg_protocol_sender_address_collection = [yearn_liquidity_transfer_addresses, IdleFinance_sender_addresses]
        let underlying_asset_info = [DAI, USDT, BUSD, SUSD, TUSD, WBTC];

        for (agg_protocol of agg_protocol_sender_address_collection) {

            for (underlying_asset of underlying_asset_info) {

                if (underlying_asset.name in agg_protocol) {
                    // DAI is in Yearn, so it returns true                        
                    for (agg_port_address of agg_protocol[underlying_asset.name].addresses) {

                        for (liquidityGate of liquidityGates) {

                            if (underlying_asset.name in liquidityGate) {

                                for(liquidity_gate_address of liquidityGate[underlying_asset.name]) {
                                    for (contract of underlying_asset.addresses) {
                                        
                                        let depositing_events = await contract.interface.getPastEvents('Transfer', 
                                            {
                                                filter: {
                                                    src: agg_port_address, 
                                                    dst: liquidity_gate_address
                                                }, 
                                                fromBlock: yearn_liquidity_transfer_addresses.starter_block, 
                                                toBlock:'latest' 
                                            }
                                        )
                                        let withdraw_events = await contract.interface.getPastEvents('Transfer',
                                            {
                                                filter: {
                                                    src: liquidity_gate_address, 
                                                    dst: agg_port_address
                                                },                                                    
                                                fromBlock: yearn_liquidity_transfer_addresses.starter_block, 
                                                toBlock: 'latest' 
                                            }
                                        )
                                    }
                                } 
                            }                
                        }
                    }
                }
            }
        }

        total_events.sort(function(a,b) {return a.timestamp - b.timestamp});
        return total_events

    } 
    catch(error) {
        console.log(error)
    };
}
4

I figured out what I was doing wrong. I was using a debugger, and when I waited too long between getPastEvent calls, the API would time out. Thanks for the help!

5

Thanks for the updates Julian, I’m glad you’ve figured it out !