Solana chain support for sending transactions
For Solana, fetching the Nitro pathfinder quote will be same as before; however, executing transaction will be different.
note
Token approval is not required when source is Solana.
- When the source chain is Solana
import {
createApproveInstruction,
getAssociatedTokenAddress,
TOKEN_2022_PROGRAM_ID,
TOKEN_PROGRAM_ID,
} from "@solana/spl-token";
import {
Keypair,
MessageV0,
PublicKey,
Transaction,
VersionedTransaction,
} from "@solana/web3.js";
const main = async () => {
// 0. after getting txResponse from "v2/transaction" api
const txResponse = await getTransaction(quoteData);
// 1. transform required instructions
const secretKeyBytes = txResponse.data?.keypair
? Object.values(txResponse.data.keypair.secretKey)
: undefined;
const keypairX = secretKeyBytes
? // @ts-ignore
Keypair.fromSecretKey(Uint8Array.from(secretKeyBytes))
: undefined;
const keypair = keypairX
? {
publicKey: keypairX.publicKey,
secretKey: keypairX.secretKey,
}
: undefined;
let transactionInstructions = [];
let allTxnHash = [];
for (
let index = 0;
index < txResponse?.data?.instructions.length;
index++
) {
const convertedKeys = txResponse?.data?.instructions[
index
].keys.map((key: { pubkey: anchor.web3.PublicKeyInitData }) => ({
...key,
pubkey: new PublicKey(key.pubkey),
}));
// Solana instruction object
const instruction = {
keys: convertedKeys,
programId: new PublicKey(
txResponse?.data?.instructions[index].programId
),
data: Buffer.from(
txResponse?.data?.instructions[index].data
),
};
transactionInstructions.push(instruction);
}
// 2. batch instructions upto 800 bytes
function batchInstructions(instructions: any, maxSize = 800) {
const batches = [];
let currentBatch = [];
let currentSize = 0;
for (let instruction of instructions) {
const instructionSize = instruction.data.byteLength;
// Check if adding this instruction would exceed the size limit
if (currentSize + instructionSize > maxSize) {
// Push current batch to batches and start a new batch
if (currentBatch.length == 0) {
batches.push([instruction]);
} else {
batches.push(currentBatch);
currentBatch = [instruction];
currentSize = instructionSize;
}
} else {
// Add instruction to current batch
currentBatch.push(instruction);
currentSize += instructionSize;
}
}
// Add any remaining instructions as a batch
if (currentBatch.length > 0) {
batches.push(currentBatch);
}
return batches;
}
const batchedInstrcutions = batchInstructions(transactionInstructions);
for (let batchs of batchedInstrcutions) {
allTxnHash.push(await senBatchTxn(batchs));
}
// 3. send batch transactions
async function senBatchTxn(batchInstruction: any) {
const transaction = new Transaction();
for (let instruction of batchInstruction) {
transaction.add(instruction);
}
let blockhashData = await solanaConnection.getLatestBlockhash({
commitment: "confirmed",
});
transaction.recentBlockhash = blockhashData.blockhash;
transaction.feePayer = wallet.publicKey;
if (keypair !== undefined) {
transaction.sign(keypair);
}
// console.log(" the keypair - ", keypair)
const messageV0 = new MessageV0(transaction.compileMessage());
// Create VersionedTransaction from MessageV0
const versionedTransaction = new VersionedTransaction(messageV0);
if (keypair !== undefined) {
versionedTransaction.sign([keypair]);
}
const simulationResult = await solanaConnection.simulateTransaction(
versionedTransaction,
{ commitment: "confirmed" }
);
console.log("simulationResult ", simulationResult);
if (simulationResult.value.err) {
console.log(
`Transaction simulation failed with error ${JSON.stringify(
simulationResult.value.err
)}`
);
throw new Error(
`Transaction simulation failed with error ${JSON.stringify(
simulationResult.value.err
)}`
);
}
let confirmedTx = await wallet.signAndSendTransaction(versionedTransaction);
await solanaConnection.confirmTransaction(
confirmedTx.signature,
"confirmed"
);
return confirmedTx;
}
}
async function getApproveInstruction(sender, sourceToken, amount) {
const payerPublicKey = sender;
const mintPublicKey = new PublicKey(sourceToken);
const spenderPublicKey = new PublicKey( // constant for circle cctp flow
"DwudccJz2JtJBsK1ZiAZkHkS2o3rffKwTyffzTHpfG3f"
);
const TokenProgram = TOKEN_PROGRAM_ID;
// Get the associated token account for the payer
const payerTokenAccount = await getAssociatedTokenAddress(
mintPublicKey,
payerPublicKey,
true,
TokenProgram
);
const approvalInstruction = createApproveInstruction(
payerTokenAccount,
spenderPublicKey,
payerPublicKey,
amount,
[],
TokenProgram
);
return approvalInstruction;
}
const getTransaction = async (params, quoteData) => {
const endpoint = "v2/transaction"
const txDataUrl = `${PATH_FINDER_API_URL}/${endpoint}`
console.log(txDataUrl)
try {
const res = await axios.post(txDataUrl, {
...quoteData,
senderAddress: "<sender-address>", // solana user wallet address
receiverAddress: "<receiver-address>",
refundAddress: "<refundAddress>" // (optional) By default equal to `senderAddress` if not provided,
})
return res.data;
} catch (e) {
console.error(`Fetching tx data from pathfinder: ${e}`)
}
}
Examples on testnet -
- Get quote
curl 'https://k8-testnet-pf.routerchain.dev/api/v2/quote?fromTokenAddress=CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2&toTokenAddress=0x69dc97bb33e9030533ca2006ab4cef67f4db4125&amount=400000000&fromTokenChainId=solana-devnet&toTokenChainId=43113&partnerId=1&slippageTolerance=1&destFuel=0' \
-H 'accept: application/json, text/plain, */*' \
-H 'accept-language: en-GB,en-US;q=0.9,en;q=0.8' \
-H 'origin: https://testnet.routernitro.com' \
-H 'priority: u=1, i' \
-H 'referer: https://testnet.routernitro.com/' \
-H 'sec-ch-ua: "Not)A;Brand";v="99", "Google Chrome";v="127", "Chromium";v="127"' \
-H 'sec-ch-ua-mobile: ?0' \
-H 'sec-ch-ua-platform: "macOS"' \
-H 'sec-fetch-dest: empty' \
-H 'sec-fetch-mode: cors' \
-H 'sec-fetch-site: cross-site' \
-H 'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36'
- Build transaction
curl 'https://k8-testnet-pf.routerchain.dev/api/v2/transaction' \
-H 'accept: application/json, text/plain, */*' \
-H 'accept-language: en-GB,en-US;q=0.9,en;q=0.8' \
-H 'content-type: application/json' \
-H 'origin: https://testnet.routernitro.com' \
-H 'priority: u=1, i' \
-H 'referer: https://testnet.routernitro.com/' \
-H 'sec-ch-ua: "Not)A;Brand";v="99", "Google Chrome";v="127", "Chromium";v="127"' \
-H 'sec-ch-ua-mobile: ?0' \
-H 'sec-ch-ua-platform: "macOS"' \
-H 'sec-fetch-dest: empty' \
-H 'sec-fetch-mode: cors' \
-H 'sec-fetch-site: cross-site' \
-H 'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36' \
--data-raw '{"flowType":"trustless","isTransfer":true,"isWrappedToken":false,"allowanceTo":"3rexFGP7LYszqCRZR78Bo6XNGZNLZekA2Lpgh9fAdaeY","bridgeFee":{"amount":"800000","decimals":18,"symbol":"AFTT","address":"CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2"},"fromTokenAddress":"CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2","toTokenAddress":"0x69dc97bb33e9030533ca2006ab4cef67f4db4125","source":{"chainId":"solana-devnet","chainType":"solana","asset":{"decimals":9,"symbol":"AFTT","name":"AFTT","chainId":"solana-devnet","address":"CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2","resourceID":"aftt","isMintable":false,"isWrappedAsset":false},"stableReserveAsset":{"decimals":9,"symbol":"AFTT","name":"AFTT","chainId":"solana-devnet","address":"CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2","resourceID":"aftt","isMintable":false,"isWrappedAsset":false},"tokenAmount":"400000000","stableReserveAmount":"400000000","path":[],"flags":[],"priceImpact":"0","tokenPath":"","dataTx":[]},"destination":{"chainId":"43113","chainType":"evm","asset":{"decimals":18,"symbol":"AFTT","name":"AFTT","chainId":"43113","address":"0x69DC97Bb33E9030533Ca2006aB4Cef67f4DB4125","resourceID":"aftt","isMintable":false,"isWrappedAsset":false},"stableReserveAsset":{"decimals":18,"symbol":"AFTT","name":"AFTT","chainId":"43113","address":"0x69DC97Bb33E9030533Ca2006aB4Cef67f4DB4125","resourceID":"aftt","isMintable":false,"isWrappedAsset":false},"tokenAmount":"399999999999200000","stableReserveAmount":"399999999999200000","path":[],"flags":[],"priceImpact":"0","tokenPath":"","dataTx":[]},"partnerId":1,"fuelTransfer":null,"slippageTolerance":"1","estimatedTime":40,"senderAddress":"GHELhmF2K3B9FthTq5FQAgN1ntJw6N4EmNqQYEjJdwPz","receiverAddress":"0x2B351b7bbC86ab5DF433539fE907f8EE4DE1B964","metaData":{"ataAddress":null}}'
- When the destination chain is Solana.
When Solana is the destination chain, api calls will be same as evm interaction. note
receiverAddresswill be user wallet address. No need to pass ATA for user. It's taken care by nitro.
Examples on testnet -
- Get quote
curl --location 'https://k8-testnet-pf.routerchain.dev/api/v2/quote?fromTokenAddress=0x69dc97bb33e9030533ca2006ab4cef67f4db4125&toTokenAddress=CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2&amount=1000000000000000000&fromTokenChainId=43113&toTokenChainId=solana-devnet&partnerId=1&slippageTolerance=1&destFuel=0'
- Build transaction
curl --location 'https://k8-testnet-pf.routerchain.dev/api/v2/transaction' \
--header 'Content-Type: application/json' \
--data '{
"flowType": "trustless",
"isTransfer": true,
"isWrappedToken": false,
"allowanceTo": "0x8db3ac65e18c87d960efd56e8fd3548acba51d8f",
"bridgeFee": {
"amount": "25000000",
"decimals": 9,
"symbol": "AFTT",
"address": "0x69DC97Bb33E9030533Ca2006aB4Cef67f4DB4125"
},
"fromTokenAddress": "0x69dc97bb33e9030533ca2006ab4cef67f4db4125",
"toTokenAddress": "CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2",
"source": {
"chainId": "43113",
"chainType": "evm",
"asset": {
"decimals": 18,
"symbol": "AFTT",
"name": "AFTT",
"chainId": "43113",
"address": "0x69DC97Bb33E9030533Ca2006aB4Cef67f4DB4125",
"resourceID": "aftt",
"isMintable": false,
"isWrappedAsset": false
},
"stableReserveAsset": {
"decimals": 18,
"symbol": "AFTT",
"name": "AFTT",
"chainId": "43113",
"address": "0x69DC97Bb33E9030533Ca2006aB4Cef67f4DB4125",
"resourceID": "aftt",
"isMintable": false,
"isWrappedAsset": false
},
"tokenAmount": "1000000000000000000",
"stableReserveAmount": "1000000000000000000",
"path": [],
"flags": [],
"priceImpact": "0",
"tokenPath": "",
"dataTx": []
},
"destination": {
"chainId": "solana-devnet",
"chainType": "solana",
"asset": {
"decimals": 9,
"symbol": "AFTT",
"name": "AFTT",
"chainId": "solana-devnet",
"address": "CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2",
"resourceID": "aftt",
"isMintable": false,
"isWrappedAsset": false
},
"stableReserveAsset": {
"decimals": 9,
"symbol": "AFTT",
"name": "AFTT",
"chainId": "solana-devnet",
"address": "CuDPEYd8tFRBvUs97mUQzQcECwgXGj5ZmFM4qNnjkfq2",
"resourceID": "aftt",
"isMintable": false,
"isWrappedAsset": false
},
"tokenAmount": "975000000",
"stableReserveAmount": "975000000",
"path": [],
"flags": [],
"priceImpact": "0",
"tokenPath": "",
"dataTx": []
},
"partnerId": 1,
"fuelTransfer": null,
"slippageTolerance": "1",
"estimatedTime": 40,
"senderAddress": "0x2B351b7bbC86ab5DF433539fE907f8EE4DE1B964",
"receiverAddress": "GHELhmF2K3B9FthTq5FQAgN1ntJw6N4EmNqQYEjJdwPz"
}'