[Ethereum] Possible to get event logs from a specific pending transaction

pending-transactionsweb3.pyweb3js

So I'm using web3 py filtering and it looks like I can listen for event logs using a filter, but I don't know which transactions in the pending pool produced the logs. Similarly, I can use getTransactionReceipt to get the event logs from a completed transaction, but it doesn't seem I can combine the two and get event logs of a pending transaction (it says transaction not found when I try). Is there any way to do this?

Best Answer

You can manually parse logs from the getTransactionReceipt() result JSON.

You can use internal web3._utils.events._get_event_data to parse raw topics to event logs.

However I do not have an example how to write it together.

Related Solutions

go-ethereum – How to Extract All Event Logs from the Blockchain – A Comprehensive Guide

Since you specified {fromBlock: 0, toBlock: 'latest'}, your code will catch all Rate events logged by the contract lms since its creation, to the latest block mined when the watch function is called.

It will only retrieve the events logged by that specific contract, not any other.

[Ethereum] ny way to get pending transaction for specified address

You could try to get the pending transactions with the 'pending' filter and then iterate over the pending entries. Then you can get the transaction receipt, which contains the 'from' and 'to' attributes.

filter = w3.eth.filter('pending')
new_entries = filter.get_new_entries()

for entry in new_entries:             
    tx = w3.eth.getTransaction(entry)
    if(tx.from == "yourAddress"):
        print("got pending transaction from: ", tx.from)

Best Answer

Related Solutions

go-ethereum – How to Extract All Event Logs from the Blockchain – A Comprehensive Guide

[Ethereum] ny way to get pending transaction for specified address

Related Topic