Decoding Seaport Events (OrderFulfilled) #546

dsgriffin · 2022-06-20T17:40:56Z

dsgriffin
Jun 20, 2022

We're trying to monitor event transactions directly and, in a similar way as we were for Wyvern, decode the event logs of a Seaport transaction.

Event signature:

event OrderFulfilled(bytes32 orderHash, address offerer, address zone, address recipient, struct SpentItem[] offer, struct ReceivedItem[] consideration)

The new contract is using a couple of Structs for offer and consideration. How are we able to decode these structs for event monitoring? Neither of the following are working:

web3.eth.abi.decodeLog([{
  type: 'bytes32',
  name: 'orderHash',
},
{
  type: 'address',
  name: 'offerer',
},
{
  type: 'address',
  name: 'zone',
},
{
  type: 'address',
  name: 'recipient',
},
{
  type: '(uint8,address,uint256,uint256)[]', // also tried: SpentItem[], as well as: tuple[]
  name: 'offer',
},
{
  type: '(uint8,address,uint256,uint256,address)[]', // also tried: RecievedItem[], as well as: tuple[]
  name: 'consideration',
}]

Causes:

2022-06-21T07:51:51.979518+00:00 app[worker.1]: /app/node_modules/web3-eth-abi/lib/index.js:297
2022-06-21T07:51:51.979541+00:00 app[worker.1]:         throw new Error('Returned values aren\'t valid, did it run Out of Gas? ' +
2022-06-21T07:51:51.979542+00:00 app[worker.1]:               ^
2022-06-21T07:51:51.979542+00:00 app[worker.1]: 
2022-06-21T07:51:51.979551+00:00 app[worker.1]: Error: Returned values aren't valid, did it run Out of Gas? You might also see this error if you are not using the correct ABI for the contract you are retrieving data from, requesting data from a block number that does not exist, or querying a node which is not fully synced.
2022-06-21T07:51:51.979552+00:00 app[worker.1]:     at ABICoder.decodeParametersWith (/app/node_modules/web3-eth-abi/lib/index.js:297:15)
2022-06-21T07:51:51.979552+00:00 app[worker.1]:     at ABICoder.decodeParameters (/app/node_modules/web3-eth-abi/lib/index.js:284:17)
2022-06-21T07:51:51.979552+00:00 app[worker.1]:     at ABICoder.decodeParameter (/app/node_modules/web3-eth-abi/lib/index.js:273:17)
2022-06-21T07:51:51.979553+00:00 app[worker.1]:     at /app/node_modules/web3-eth-abi/lib/index.js:341:25
2022-06-21T07:51:51.979553+00:00 app[worker.1]:     at Array.forEach (<anonymous>)
2022-06-21T07:51:51.979554+00:00 app[worker.1]:     at ABICoder.decodeLog (/app/node_modules/web3-eth-abi/lib/index.js:337:12)
2022-06-21T07:51:51.979555+00:00 app[worker.1]:     at Subscription.<anonymous> (/app/app.js:92:47)
2022-06-21T07:51:51.979555+00:00 app[worker.1]:     at processTicksAndRejections (node:internal/process/task_queues:96:5)

Answered by dsgriffin

Aug 2, 2022

@prafulrana @thezenvan find a working example on my repo here:

NFT Sales Twitter Bot

View full answer

callikai · 2022-06-20T22:24:51Z

callikai
Jun 20, 2022

I think I made a little progress with the below ABI, but haven't quite figured it out yet. Getting overflow errors from ethers.

logDecoder: [
      {
        name: "orderHash",
        type: "bytes32",
      },
      {
        name: "offerer",
        type: "address",
      },
      {
        name: "zone",
        type: "address",
      },
      {
        name: "recipient",
        type: "address",
      },
      {
        name: "offer",
        type: "tuple[]",
        components: [
          {
            name: "itemType",
            type: "uint8",
          },
          {
            name: "token",
            type: "address",
          },
          {
            name: "identifier",
            type: "uint256",
          },
          {
            name: "amount",
            type: "uint256",
          },
        ],
      },
      {
        name: "consideration",
        type: "tuple[]",
        components: [
          {
            name: "itemType",
            type: "uint8",
          },
          {
            name: "token",
            type: "address",
          },
          {
            name: "identifier",
            type: "uint256",
          },
          {
            name: "amount",
            type: "uint256",
          },
          {
            name: "recipient",
            type: "address",
          },
        ],
      },
    ], 
    ```

0 replies

dsgriffin · 2022-06-21T08:45:51Z

dsgriffin
Jun 21, 2022
Author

The above causes the following:

2022-06-21T07:51:51.979518+00:00 app[worker.1]: /app/node_modules/web3-eth-abi/lib/index.js:297
2022-06-21T07:51:51.979541+00:00 app[worker.1]:         throw new Error('Returned values aren\'t valid, did it run Out of Gas? ' +
2022-06-21T07:51:51.979542+00:00 app[worker.1]:               ^
2022-06-21T07:51:51.979542+00:00 app[worker.1]: 
2022-06-21T07:51:51.979551+00:00 app[worker.1]: Error: Returned values aren't valid, did it run Out of Gas? You might also see this error if you are not using the correct ABI for the contract you are retrieving data from, requesting data from a block number that does not exist, or querying a node which is not fully synced.
2022-06-21T07:51:51.979552+00:00 app[worker.1]:     at ABICoder.decodeParametersWith (/app/node_modules/web3-eth-abi/lib/index.js:297:15)
2022-06-21T07:51:51.979552+00:00 app[worker.1]:     at ABICoder.decodeParameters (/app/node_modules/web3-eth-abi/lib/index.js:284:17)
2022-06-21T07:51:51.979552+00:00 app[worker.1]:     at ABICoder.decodeParameter (/app/node_modules/web3-eth-abi/lib/index.js:273:17)
2022-06-21T07:51:51.979553+00:00 app[worker.1]:     at /app/node_modules/web3-eth-abi/lib/index.js:341:25
2022-06-21T07:51:51.979553+00:00 app[worker.1]:     at Array.forEach (<anonymous>)
2022-06-21T07:51:51.979554+00:00 app[worker.1]:     at ABICoder.decodeLog (/app/node_modules/web3-eth-abi/lib/index.js:337:12)
2022-06-21T07:51:51.979555+00:00 app[worker.1]:     at Subscription.<anonymous> (/app/app.js:92:47)
2022-06-21T07:51:51.979555+00:00 app[worker.1]:     at processTicksAndRejections (node:internal/process/task_queues:96:5)

0 replies

thezenvan · 2022-06-24T23:12:53Z

thezenvan
Jun 24, 2022

@dsgriffin did you manage to solve this? I'm trying to decode a NFT sale event but can't figure how to
https://etherscan.io/tx/0xe0b9b25822b2adc8ae16d7ad8bec975a690df84d0ad9c16c9400ef3835b8146f#eventlog

0 replies

joequant · 2022-06-30T15:20:36Z

joequant
Jun 30, 2022

I got something that worked, but it is odd. When I try to parse the item as a tuple the dynamic arrays are read with dynamic offsets, so the event does not parse. However, by treating them as sequential arrays, I get something that worked.

In web3.py this looks like

                    data = decode_abi(
                        ['bytes32','address','address','address'],
                        self.web3.toBytes(hexstr=i.data)
                    )
                    data1 = decode_single(
                        '(uint8,address,uint256,uint256)[]',
                        self.web3.toBytes(hexstr=i.data[2+64*4:])
                    )
                    data2 = decode_single(
                        '(uint8,address,uint256,uint256,address)[]',
                        self.web3.toBytes(hexstr=i.data[2+64*4+64+64*4:])
                    )

1 reply

prafulrana Jul 24, 2022

anyone figure this out?

joequant · 2022-07-25T01:42:13Z

joequant
Jul 25, 2022

Yes. I managed to decode the packets. I think I posted the code. Let me find it. 在 2022年7月25日週一 03:27，Praful Rana ***@***.***> 寫道：

…

anyone figure this out? — Reply to this email directly, view it on GitHub <#546 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAWGAGL3SDJMNJ7P2Z7S3MDVVWKJ5ANCNFSM52JX3GAA> . You are receiving this because you commented.Message ID: ***@***.***>

0 replies

joequant · 2022-07-25T01:46:38Z

joequant
Jul 25, 2022

Look at the previous comment for how I decoded the packet. The odd thing is that the arrays don't seem to have dynamic offsets. I don't know how this fits the ethereum abi spec but it seems to work.

0 replies

dsgriffin · 2022-08-02T12:26:31Z

dsgriffin
Aug 2, 2022
Author

@prafulrana @thezenvan find a working example on my repo here:

NFT Sales Twitter Bot

0 replies

luxbg · 2023-09-24T08:17:18Z

luxbg
Sep 24, 2023

A little late, but for people who are still looking. This is what i figured out for now..

 const subscription = await web3.eth.subscribe("logs", {
    topics: [
      "0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31",
    ],
  });

subscription.on("data", (event) => {
    // Filter only by seaport 1.5 address
    if (event.address != "0x00000000000000adc04c56bf30ac9d3c0aaf14dc") return;
    let transaction = web3.eth.abi.decodeLog(
      [
        {
          indexed: false,
          internalType: "bytes32",
          name: "orderHash",
          type: "bytes32",
        },
        {
          indexed: true,
          internalType: "address",
          name: "offerer",
          type: "address",
        },
        {
          indexed: true,
          internalType: "address",
          name: "zone",
          type: "address",
        },
        {
          indexed: false,
          internalType: "address",
          name: "recipient",
          type: "address",
        },
        {
          components: [
            {
              internalType: "enum ItemType",
              name: "itemType",
              type: "uint8",
            },
            {
              internalType: "address",
              name: "token",
              type: "address",
            },
            {
              internalType: "uint256",
              name: "identifier",
              type: "uint256",
            },
            {
              internalType: "uint256",
              name: "amount",
              type: "uint256",
            },
          ],
          indexed: false,
          internalType: "struct SpentItem[]",
          name: "offer",
          type: "tuple[]",
        },
        {
          components: [
            {
              internalType: "enum ItemType",
              name: "itemType",
              type: "uint8",
            },
            {
              internalType: "address",
              name: "token",
              type: "address",
            },
            {
              internalType: "uint256",
              name: "identifier",
              type: "uint256",
            },
            {
              internalType: "uint256",
              name: "amount",
              type: "uint256",
            },
            {
              internalType: "address payable",
              name: "recipient",
              type: "address",
            },
          ],
          indexed: false,
          internalType: "struct ReceivedItem[]",
          name: "consideration",
          type: "tuple[]",
        },
      ],
      event.data,
      [event.topics[0], event.topics[1], event.topics[2]]
    );

    console.log(transaction);
  });

This logs:

{
    "0": "0x8aa0ea168908d7e95a40b6dd5049ba456a04a057fa3cf8f1090e668baaabeab4",
    "1": "0x82aC08E774De674d37447D630129De8960097BA9",
    "2": "0x0000000000000000000000000000000000000000",
    "3": "0xBBf11C2c0D0190B734934b64Fa56D6EF5Ea8ee9e",
    "4": [
        [
            "2",
            "0xDC901017d1C8C9e5745a0A52e3237804dA32790C",
            "3012",
            "1"
        ]
    ],
    "5": [
        [
            "0",
            "0x0000000000000000000000000000000000000000",
            "0",
            "81900000000000000000",
            "0x82aC08E774De674d37447D630129De8960097BA9"
        ],
        [
            "0",
            "0x0000000000000000000000000000000000000000",
            "0",
            "2250000000000000000",
            "0x0000a26b00c1F0DF003000390027140000fAa719"
        ],
        [
            "0",
            "0x0000000000000000000000000000000000000000",
            "0",
            "5850000000000000000",
            "0x2F01f6b99b4e84E8c05E6cEfC1a1700DE6298341"
        ]
    ],
    "__length__": 6,
    "orderHash": "0x8aa0ea168908d7e95a40b6dd5049ba456a04a057fa3cf8f1090e668baaabeab4",
    "offerer": "0x82aC08E774De674d37447D630129De8960097BA9",
    "zone": "0x0000000000000000000000000000000000000000",
    "recipient": "0xBBf11C2c0D0190B734934b64Fa56D6EF5Ea8ee9e",
    "offer": [
        [
            "2",
            "0xDC901017d1C8C9e5745a0A52e3237804dA32790C",
            "3012",
            "1"
        ]
    ],
    "consideration": [
        [
            "0",
            "0x0000000000000000000000000000000000000000",
            "0",
            "81900000000000000000",
            "0x82aC08E774De674d37447D630129De8960097BA9"
        ],
        [
            "0",
            "0x0000000000000000000000000000000000000000",
            "0",
            "2250000000000000000",
            "0x0000a26b00c1F0DF003000390027140000fAa719"
        ],
        [
            "0",
            "0x0000000000000000000000000000000000000000",
            "0",
            "5850000000000000000",
            "0x2F01f6b99b4e84E8c05E6cEfC1a1700DE6298341"
        ]
    ]
}

0 replies

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Decoding Seaport Events (OrderFulfilled) #546

{{title}}

{{editor}}'s edit

{{editor}}'s edit

Replies: 8 comments 1 reply

{{title}}

{{editor}}'s edit

{{editor}}'s edit

{{title}}

{{title}}

{{title}}

{{editor}}'s edit

{{editor}}'s edit

{{title}}

{{title}}

{{title}}

{{title}}

{{title}}

{{editor}}'s edit

{{editor}}'s edit

Select a reply

Decoding Seaport Events (OrderFulfilled) #546

Replies: 8 comments · 1 reply

dsgriffin Jun 21, 2022 Author

dsgriffin Aug 2, 2022 Author

Replies: 8 comments 1 reply

dsgriffin
Jun 21, 2022
Author

dsgriffin
Aug 2, 2022
Author