Implemented eth namespace apis using internally already implemented klaytnAPI

[aeharvlee]

Proposed changes

This PR Implemented eth namespace apis using already implemented klaytnAPI.

Api	Ethereum Source Code
eth_getBlockTransactionCountByHash	GetBlockTransactionCountByHash
eth_getBlockTransactionCountByNumber	GetBlockTransactionCountByNumber
eth_newPendingTransactionFilter	NewPendingTransactionFilter
Subscription: newPendingTransactions	NewPendingTransactions
eth_newBlockFilter	NewBlockFilter
Subscription: logs	Logs
eth_newFilter	NewFilter
eth_getLogs	GetLogs
eth_uninstallFilter	UninstallFilter
eth_getFilterChanges	GetFilterChanges
eth_getFilterLogs	GetFilterLogs
eth_gasPrice	GasPrice
eth_maxPriorityFeePerGas	MaxPriorityFeePerGas
eth_syncing	Syncing
eth_chainId	ChainId
eth_blockNumber	BlockNumber
eth_getBalance	GetBalance
eth_getCode	GetCode
eth_getStorageAt	GetStorageAt
eth_accounts	Accounts

Related Confluence: How Ethereum APIs are supported in Klaytn

How to test this PR

First, please clone my origin repo.

1. Build ken with source codes related with this PR.

• Run make ken

2. Run ken

• In my case, I tested with CN 1 - PN 1 - EN 1 in my local.
• Please note that you should enable eth namepsace to RPC_API and WS_API in kend.conf

3. Setup test scenario
Deploy kip7 contract

Before testing, I deployed kip7 contract and used it. Below is the my information of my test scenario and result.

• Contract address: 0x6A90F04A407258c4F516959E4f62CD2C0C309018
• Deployer address: 0x3e2ac308cd78ac2fe162f9522deb2b56d9da9499
• Recipient address: 0x8944d588cf8a4d255e2510f1c05b1eb4557bdaba
• Topic: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef (= keccak256("Transfer(address,address,uint256)"))

Deploy storage contract

Before testing, I deployed storage contract which is described in klay_getStorageAt and used it. Below is the my information of my test scenario and result.

• Contract address: 0xDAf9C71C8a35b397250fb9f2ac1bD6b685E722Df
• Byte code: 6080604052348015600f57600080fd5b506104d260008190555061162e600160003373ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200190815260200160002081905550603580606c6000396000f3006080604052600080fd00a165627a7a72305820372ea18474d2fe1c7f0d56ce71fac400e8f8b1ca01c83b0544b7af09b7420b850029
• Abi: [{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]

Test Logs

Click to expand

GetBlockTransactionCountByHash

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "eth_getBlockTransactionCountByHash", "params":["0x5f488f8b6f087befaeff257c47f1cfb25d6c91ca621acc2f89dbe355353349df"], "id": 1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x1"}

# Query none existing block hash should return null like Ethereum does.
➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "eth_getBlockTransactionCountByHash", "params":["0x5f488f8b6f087befaeff257c47f1cfb25d6c91ca621acc2f89dbe355353349de"], "id": 1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":null}

GetBlockTransactionCountByNumber

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "eth_getBlockTransactionCountByNumber", "params":["0x7a906"], "id": 1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x1"}

# Query none existing block number should return null like Ethereum does.
➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "eth_getBlockTransactionCountByNumber", "params":["0x7a9069"], "id": 1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":null}

NewPendingTransactionFilter

➜  corecell curl localhost:8551 -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","method":"eth_newPendingTransactionFilter","params":[],"id":1}'
{"jsonrpc":"2.0","id":1,"result":"0x6380b79126fc8a83662268587c22848d"}

# Send 3 txs after transaction filter is created and check changes by using getFilterChanges
➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0x6380b79126fc8a83662268587c22848d"],"id":73}' http://localhost:8551
{"jsonrpc":"2.0","id":73,"result":["0x24f5c29a54d830755745d3a9ef97aee0b3e58aec164d4d23ea242b3d364a70ea","0x871bdb366e08146f888c7dccdb573855e1f7fa22c21be96b0fc3a9a503b245d0","0xe8766f87e972ff98a40b9c83b19a8584a02ac46c185934c74bf27d1b5b5add90"]}

Subscription: NewPendingTransactions

➜  klaytn wscat -c ws://localhost:8552
Connected (press CTRL+C to quit)
> {"jsonrpc":"2.0", "id": 1, "method": "eth_subscribe", "params": ["newPendingTransactions"]}
< {"jsonrpc":"2.0","id":1,"result":"0x861c07be2d1c403b892a285ca7cd17c7"}
# Send 3 txs after subscription is acitvated 
< {"jsonrpc":"2.0","method":"eth_subscription","params":{"subscription":"0x861c07be2d1c403b892a285ca7cd17c7","result":"0xc1147cc28fc79d60a72dcffd2977580220a74341440dd9b4eda5aa9a0b2a457c"}}
< {"jsonrpc":"2.0","method":"eth_subscription","params":{"subscription":"0x861c07be2d1c403b892a285ca7cd17c7","result":"0xf10939d71e1d1d869b3df2b46b87585d30038ef8cd6fc5b5dbc558c59c2ec7f7"}}
< {"jsonrpc":"2.0","method":"eth_subscription","params":{"subscription":"0x861c07be2d1c403b892a285ca7cd17c7","result":"0x3fcb3874c38c3068ae514fc1d928383c63b0901c8e1d21fbef7116858d14462b"}}

NewBlockFilter*

➜  corecell curl localhost:8551 -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":1}'
{"jsonrpc":"2.0","id":1,"result":"0xa56230b22ae9b7dcdef8648f3dd03fba"}

# After about 30 seconds... check changes by using getFilterChanges
➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0xa56230b22ae9b7dcdef8648f3dd03fba"],"id":73}' http://localhost:8551

{"jsonrpc":"2.0","id":73,"result":["0x5379518ef8a75e117994bca0fec4a64f7545426f170b99c094d6667e78b69d4b","0x1b64b8491106fe91786c0022885852aa1b5d7c54a123b96535f0c162678ffff9","0xd1c35567efe1ce04a68b8d914312a4bafbf649a9d9b0a4174031038499d52b98","0xe6b3bb4c45ed5aa38489ec780165a41c008c918af0e1c1afaffda0d05015993c","0x2c485e30dd2f591e3c3d93d6ca7de0c5aa1ece656a1fa5abe719e88a5a6e3ad4","0x79fae5c94e2e376ed402b13e6d72719274a1df3a87c3b1302eff5ffc1b304814","0x7ce7a6341e18ad5eb23c20e8772de788c292d9a16abc11ad38800aad07a3ec22","0xfb592fd0fc1d5a8c26f3b68b96878d337fadff89e690191e10b1fd58b27ca2d3","0x3601767b44fcb3591b9436c75e93d7717f16a7b3922d62a5efbea7ae602a8c92","0x47bcf4ec1b4b8c525e7825d3044ed10d4ec287794f2475182a9a7406f39b2e7a","0xa872547b2ebb0121f54dc115a987719c7c024634318315c7cc25f7c5b8f894d4","0x658ca97c07efd720140d962a2489155046c994cd744455d6a19a5f8710968a59","0xa0b6182c4ff79e665f5cc4670343e9e4146641aead99175e44c19abfbdcb8890","0x91c9ca86b0ae957c092cf4ba756d9f98c55afe40dc9fc2872c1d5ff1d9062de0","0x63e3220483f42e1d45fc96f2c8292aa551dc15059d113f8ca05a4453474e005d","0x648facf60d033d816d1ce97dc7ca3edeea418e847d8ef173b4a980b39a133cc1","0x9bd6b1f8231fa7c1ba3b88d4aa83f918b156ac578346732fdbfdfdadd91b1fd9","0xba27513d07bf7f85dbfb8cbd26a74069bbb25fb44b6ecdcd59256d12492ebb74","0xeb8f7ca38659414d280b3e1d77e4aaf53abb40d18c16cc65dd6ea0670633758f","0xd7d9a3f5b09242e3e52bbca9b1f53294addb184da4897d0af5bdc5d53875c124","0x6d10801fdd4ecc1d4e496cb211074556e2ddf425836ed4ef3ec5cbfae447cd07","0xee5a29078b490a6908e2a64df14191b42851f55fd7a1463c1767f8676e31ad53","0xb575028b66925d0a159b4270ae34cac73966b431e2e2cf2d74065a31720f2c0a","0x339a327fe054117a36b26e14944d2adc604aee7e82978279dff6bcd949ac2e63"]}

Subscription: Logs

> {"jsonrpc":"2.0", "id": 1, "method": "eth_subscribe", "params": ["logs", {"fromBlock":"earliest","toBlock":"latest","address":"0x6A90F04A407258c4F516959E4f62CD2C0C309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}]}
< {"jsonrpc":"2.0","id":1,"result":"0x23df107ecd933fc7b9b517e5de7592d3"}
< {"jsonrpc":"2.0","method":"eth_subscription","params":{"subscription":"0x23df107ecd933fc7b9b517e5de7592d3","result":{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499","0x0000000000000000000000008944d588cf8a4d255e2510f1c05b1eb4557bdaba"],"data":"0x0000000000000000000000000000000000000000000000000000000000000001","blockNumber":"0x78ee5","transactionHash":"0xb16677df0ccf494f15a6e532a223aa17a7d08624936532460d99cceb051ce0fd","transactionIndex":"0x0","blockHash":"0xebe057387c8ec7067e3010578407100858031d228f0eb38dad682a081322c11f","logIndex":"0x0","removed":false}}}
< {"jsonrpc":"2.0","method":"klay_subscription","params":{"subscription":"0x47d280b81a4ff98e453dfa42337b50aa","result":{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499","0x0000000000000000000000008944d588cf8a4d255e2510f1c05b1eb4557bdaba"],"data":"0x0000000000000000000000000000000000000000000000000000000000000001","blockNumber":"0x78ee5","transactionHash":"0xb16677df0ccf494f15a6e532a223aa17a7d08624936532460d99cceb051ce0fd","transactionIndex":"0x0","blockHash":"0xebe057387c8ec7067e3010578407100858031d228f0eb38dad682a081322c11f","logIndex":"0x0","removed":false}}}

NewFilter

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"fromBlock":"0x1","toBlock":"latest","address":"0x6A90F04A407258c4F516959E4f62CD2C0C309018"}],"id":1}' http://localhost:8551
{"jsonrpc":"2.0","id":1,"result":"0xb8587d45b734f47efb14ef3dcbc88a92"}

# After sending kip7 transfer transactions...
➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0xb8587d45b734f47efb14ef3dcbc88a92"],"id":73}' http://localhost:8551
{"jsonrpc":"2.0","id":73,"result":[{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499","0x0000000000000000000000008944d588cf8a4d255e2510f1c05b1eb4557bdaba"],"data":"0x0000000000000000000000000000000000000000000000000000000000000001","blockNumber":"0x79041","transactionHash":"0xea3619ea1c0297927fbd091a44a58c147cba02809b2e4e3bce29a01e5d116541","transactionIndex":"0x0","blockHash":"0x32b8ed19e2fc6c58383cef5b320e28ec64ac8cee66fa7deb8d0fa4eb08fdef15","logIndex":"0x0","removed":false}]}

GetLogs

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"fromBlock":"0x1","toBlock":"latest","address":"0x6A90F04A407258c4F516959E4f62CD2C0C309018"}],"id":1}' http://localhost:8551
{"jsonrpc":"2.0","id":1,"result":[{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0x6ae172837ea30b801fbfcdd4108aa1d5bf8ff775444fd70256b44e6bf3dfc3f6","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499"],"data":"0x","blockNumber":"0x78beb","transactionHash":"0xeb1a35de54c2c6227ff0431854b140a64caf00a75433fb7e979e5117fc5f33ad","transactionIndex":"0x0","blockHash":"0xe834fb3f9083bfb1935520bf25614c73cdac5febc4e8fc2373e85c7691890f2a","logIndex":"0x0","removed":false},{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0x6719d08c1888103bea251a4ed56406bd0c3e69723c8a1686e017e7bbe159b6f8","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499"],"data":"0x","blockNumber":"0x78beb","transactionHash":"0xeb1a35de54c2c6227ff0431854b140a64caf00a75433fb7e979e5117fc5f33ad","transactionIndex":"0x0","blockHash":"0xe834fb3f9083bfb1935520bf25614c73cdac5febc4e8fc2373e85c7691890f2a","logIndex":"0x1","removed":false},{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000000000000000000000000000000000000000000000","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499"],"data":"0x0000000000000000000000000000000000000000000000000de0b6b3a7640000","blockNumber":"0x78beb","transactionHash":"0xeb1a35de54c2c6227ff0431854b140a64caf00a75433fb7e979e5117fc5f33ad","transactionIndex":"0x0","blockHash":"0xe834fb3f9083bfb1935520bf25614c73cdac5febc4e8fc2373e85c7691890f2a","logIndex":"0x2","removed":false},{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499","0x0000000000000000000000008944d588cf8a4d255e2510f1c05b1eb4557bdaba"],"data":"0x0000000000000000000000000000000000000000000000000000000000000001","blockNumber":"0x78bee","transactionHash":"0x3b9525dc7d010d2834a38a1ce477bd3583dc6c956da6a6c4efedfbff932420cd","transactionIndex":"0x0","blockHash":"0x86ee69260b535039abd9d18b44c0854bd015dcaa24276daba0aeccafa5056358","logIndex":"0x0","removed":false},{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499","0x0000000000000000000000008944d588cf8a4d255e2510f1c05b1eb4557bdaba"],"data":"0x0000000000000000000000000000000000000000000000000000000000000001","blockNumber":"0x78e86","transactionHash":"0x0fc448addef4332a68f2e6391fd8e4382ac741186b1f6bd67c920793164f307f","transactionIndex":"0x0","blockHash":"0x2bf49e95ed7342ee805decf505e9b2646a86df299d435f42703f8b0e2eef117f","logIndex":"0x0","removed":false},{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499","0x0000000000000000000000008944d588cf8a4d255e2510f1c05b1eb4557bdaba"],"data":"0x0000000000000000000000000000000000000000000000000000000000000001","blockNumber":"0x78ee5","transactionHash":"0xb16677df0ccf494f15a6e532a223aa17a7d08624936532460d99cceb051ce0fd","transactionIndex":"0x0","blockHash":"0xebe057387c8ec7067e3010578407100858031d228f0eb38dad682a081322c11f","logIndex":"0x0","removed":false},{"address":"0x6a90f04a407258c4f516959e4f62cd2c0c309018","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x0000000000000000000000003e2ac308cd78ac2fe162f9522deb2b56d9da9499","0x0000000000000000000000008944d588cf8a4d255e2510f1c05b1eb4557bdaba"],"data":"0x0000000000000000000000000000000000000000000000000000000000000001","blockNumber":"0x79041","transactionHash":"0xea3619ea1c0297927fbd091a44a58c147cba02809b2e4e3bce29a01e5d116541","transactionIndex":"0x0","blockHash":"0x32b8ed19e2fc6c58383cef5b320e28ec64ac8cee66fa7deb8d0fa4eb08fdef15","logIndex":"0x0","removed":false}]}

UninstallFilter

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"fromBlock":"0x1","toBlock":"latest","address":"0x6A90F04A407258c4F516959E4f62CD2C0C309018"}],"id":1}' http://localhost:8551
{"jsonrpc":"2.0","id":1,"result":"0x1266f6e8a48d95f8f8bc956c7227936f"}
➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_uninstallFilter","params":["0x1266f6e8a48d95f8f8bc956c7227936f"],"id":1}' http://localhost:8551
{"jsonrpc":"2.0","id":1,"result":true}

GetFilterChanges

Already tested it above tests.

GasPrice

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[""],"id":1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x5d21dba00"}

MaxPriorityFeePerGas

MaxPriorityFeePerGas
➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_maxPriorityFeePerGas","params":[""],"id":1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x5d21dba00"}

Syncing

ChainId

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[""],"id":1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0xe5a51"}

BlockNumber

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[""],"id":1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x79331"}

GetBalance

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getBalance","params":["0x3e2ac308cd78ac2fe162f9522deb2b56d9da9499","pending"],"id":1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x446c3b15f9926687d2c40534fdb3f4298e5d6d0853"}

GetCode

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0x6A90F04A407258c4F516959E4f62CD2C0C309018","latest"],"id":1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x6080…”}

GetStorageAt

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": “eth_getStorageAt", "params": ["0xDAf9C71C8a35b397250fb9f2ac1bD6b685E722Df", "0x0", "latest"], "id": 1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":"0x00000000000000000000000000000000000000000000000000000000000004d2"}

Accounts

➜  corecell curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "eth_accounts", "params":[], "id": 1}' http://localhost:8551

{"jsonrpc":"2.0","id":1,"result":["0xca7a99380131e6c76cfa622396347107aeedca2d","0x3e2ac308cd78ac2fe162f9522deb2b56d9da9499","0xf7ccb6e6ef8386582c917604c0983d70dd555c0c","0xe19a5e72e8448978dbbaee284a140f67a08ac2a4","0x2eaad2bf70a070aaa2e007beee99c6148f47718e","0x59b01bfecddaee11f249bc180b804a58fd4c4728","0xb6a5f0c236c0289f4681ae6eca6959eb6172bb1d","0x72e3410a33d1c9bb0b623354309a93e9fd5e40fd"]}

Types of changes

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• Bugfix
• New feature or enhancement
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Further comments

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