klay_getFilterChanges

Polling method for a filter, which returns an array of logs which occurred since last poll.

Parameters

Name	Type	Description
QUANTITY	string	The filter id (e.g., "0x16" // 22).

Return Value

Array - Array of log objects, or an empty array if nothing has changed since last poll.

Name	Type	Description
removed	TAG	true when the log was removed, due to a chain reorganization. false if it is a valid log.
logIndex	QUANTITY	Integer of the log index position in the block. null when it is a pending log.
transactionIndex	QUANTITY	Integer of the transactions index position log was created from. null when pending.
transactionHash	32-byte DATA	Hash of the transactions this log was created from. null when pending.
blockHash	32-byte DATA	Hash of the block where this log was in. null when pending.
blockNumber	QUANTITY	The block number where this log was in. null when pending.Address from which this log originated.
address	20-byte DATA	Address from which this log originated.
data	DATA	Contains the non-indexed arguments of the log.
topics	Array of DATA	Array of 0 to 4 32-byte DATA of indexed log arguments. (In Solidity: The first topic is the hash of the signature of the event (e.g., Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.).

Example

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_getFilterChanges","params":["0x16"],"id":73}' http://klaytn.blockpi.network/v1/rpc/your-api-key

// Result
{
    "id":1,
    "jsonrpc":"2.0",
    "result": [{
    "logIndex": "0x1", // 1
    "blockNumber":"0x1b4", // 436
    "blockHash": "0x8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "transactionHash":  "0xdf829c5a142f1fccd7d8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcf",
    "transactionIndex": "0x0", // 0
    "address": "0x16c5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "data":"0x0000000000000000000000000000000000000000000000000000000000000000",
    "topics": ["0x59ebeb90bc63057b6515673c3ecf9438e5058bca0f92585014eced636878c9a5"]
    },{
        ...
    }]
}