\u8bd1\u8005 | \u674e\u777f<\/p>\n
\u5ba1\u6821 | \u5b59\u6dd1\u5a1f<\/p>\n
\u4f17\u6240\u5468\u77e5\uff0c\u8bb8\u591a\u533a\u5757\u94fe\u90fd\u5b58\u5728\u53ef\u6269\u5c55\u6027\u548c\u62e5\u585e\u95ee\u9898\u3002\u8fd9\u4e9b\u95ee\u9898\u6709\u5e7f\u6cdb\u7684\u5f71\u54cd\uff0c\u4ece\u4ea4\u6613\u65f6\u95f4\u53d8\u6162\uff0c\u5230\u4ea4\u6613\u8d39\u7528\u589e\u52a0\uff0c\u4ee5\u53ca\u7528\u6237\u4f53\u9a8c\u4e0b\u964d\u3002<\/p>\n
\u4e00\u79cd\u89e3\u51b3\u65b9\u6848\u662f\u4f7f\u7528L2\uff08\u7b2c\u4e8c\u5c42\uff09\u533a\u5757\u94fe\u4f7fWeb3\u6210\u4e3a\u591a\u94fe\u3002\u4ee5\u592a\u574aL2\uff08\u4f8b\u5982Optimism\u3001Arbitrum\u548cPolygon\uff09\u6784\u5efa\u5728\u4ee5\u592a\u574a\u7f51\u7edc\u4e4b\u4e0a\uff0c\u4f46\u6bd4\u4ee5\u592a\u574a\u66f4\u5feb\uff0c\u66f4\u4fbf\u5b9c\u3002\u7136\u800c\uff0c\u4f5c\u4e3a\u4e00\u79cd\u6743\u8861\uff0c\u5b83\u4eec\u901a\u5e38\u4e0d\u5982\u4ee5\u592a\u574a\u5b89\u5168\u3002\u8fd9\u5c31\u662fL2\u5904\u7406\u65e5\u5e38\u7528\u6237\u6d3b\u52a8\uff0c\u540c\u65f6\u4ecd\u7136\u4f9d\u8d56\u4ee5\u592a\u574aL1\u4f5c\u4e3a\u5b89\u5168\u3001\u53bb\u4e2d\u5fc3\u5316\u7ed3\u7b97\u548c\u6570\u636e\u53ef\u7528\u6027\u5c42\u7684\u5e55\u540e\u57fa\u7840\u7684\u539f\u56e0\u3002 <\/p>\n
\u8fd9\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4ec5\u4ee5\u592a\u574a\u4e0a\u5c31\u6709\u8bb8\u591aL2\uff0c\u6bcf\u4e2aL2\u90fd\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u7f51\u7edc\uff0c\u6709\u81ea\u5df1\u7684\u7ec6\u5fae\u5dee\u522b\u548c\u4f53\u9a8c\u3002\u6784\u5efa\u548c\u4f7f\u7528\u5728\u8fd9\u4e9b\u7f51\u7edc\u548c\u4ee5\u592a\u574aL1\u4e4b\u95f4\u4e92\u64cd\u4f5c\u548c\u79fb\u52a8\u7684dApp\u53ef\u80fd\u662f\u4e4f\u5473\u548c\u56f0\u96be\u7684\uff0c\u800c\u4e14\u5bf9\u7528\u6237\u548c\u5f00\u53d1\u4eba\u5458\u6765\u8bf4\u4e5f\u662f\u7cdf\u7cd5\u7684\u4f53\u9a8c\u3002<\/p>\n
\u73b0\u5728\u9700\u8981\u7684\u662fWeb3\u6210\u4e3a\u4e00\u79cd\u591a\u94fe\u4f53\u9a8c\uff0c\u6d88\u8d39\u8005\u4e0d\u9700\u8981\u77e5\u9053\u4ed6\u4eec\u4f7f\u7528\u7684\u662f\u54ea\u6761\u533a\u5757\u94fe(\u5766\u7387\u5730\u8bf4\u4e0d\u5728\u4e4e)\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u4f9d\u8d56\u4efb\u4f55\u6700\u652f\u6301\u4ed6\u4eecdApp\u9700\u6c42\u7684\u7f51\u7edc\u3002\u901a\u8fc7\u8f6c\u79fb\u5230\u533a\u5757\u94fe\u7684\u591a\u94fe\u4e92\u8054\u7f51\uff0cWeb3\u4e3a\u6bcf\u4e2a\u53c2\u4e0e\u8005\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u4f53\u9a8c\u3002 <\/p>\n
\u4e0d\u5e78\u7684\u662f\uff0c\u5141\u8bb8dApp\u5728\u533a\u5757\u94fe\u4e4b\u95f4\u79fb\u52a8\u662f\u4e00\u9879\u8270\u5de8\u7684\u6280\u672f\u6311\u6218\u3002\u672c\u6587\u5c06\u7814\u7a76\u4e00\u79cd\u89e3\u51b3\u65b9\u6848\u2014\u2014\u4f7f\u7528Infura RPC\u7aef\u70b9\u548cTruffle Box\u8fdb\u884c\u6784\u5efa\uff0c\u5e76\u65e0\u7f1d\u5730\u6865\u63a5\u8fd9\u4e9b\u7f51\u7edc\u3002\u5177\u4f53\u6765\u8bf4\uff0c \u5c06\u4f7f\u7528Optimism Bridge\u7684Truffle Box\u5728\u4ee5\u592a\u574aGoerli\u6d4b\u8bd5\u7f51\u4e0a\u521b\u5efa\u4e00\u4e2a\u9879\u76ee\uff0c\u5e76\u8fde\u63a5\u5230Optimism Goerli\u3002 <\/p>\n
\u4f5c\u4e3a\u793a\u4f8b\u89e3\u51b3\u65b9\u6848\u7684\u6838\u5fc3\uff0c\u5c06\u4f9d\u8d56\u4e8e\u6765\u81eaConsenSys\u7684\u201c\u5feb\u6377\u201d\u6837\u677f\u6587\u4ef6(\u4f8b\u5982\u5408\u7ea6\u3001\u5e93\u3001\u6a21\u5757\uff0c\u751a\u81f3\u662f\u529f\u80fd\u9f50\u5168\u7684dApp)\uff0c\u4f01\u4e1a\u53ef\u4ee5\u4f7f\u7528\u5b83\u4eec\u6765\u6784\u5efa\u81ea\u5df1\u7684dApp\u3002\u5bf9\u4e8e\u591a\u94fe\u89e3\u51b3\u65b9\u6848\uff0c\u5b83\u4eec\u6784\u5efa\u5728\u8bb8\u591aL2\u7f51\u7edc\u7684Infura RPC\u8282\u70b9\u4e4b\u4e0a\u3002<\/p>\n
\u5982\u4e0a\u6240\u8ff0\uff0c\u7279\u522b\u4f9d\u8d56Optimism Bridge\u7684Truffle Box\u3002Truffle Box\u5305\u542bL1\u548cL2\u4e0eOptimism Bridge\u4ea4\u4e92\u6240\u9700\u7684\u6240\u6709\u5408\u7ea6\uff0c\u4ee5\u53ca\u4e00\u7ec4\u7528\u4e8e\u5728\u5c42\u4e4b\u95f4\u90e8\u7f72\u3001\u8c03\u7528\u51fd\u6570\u548c\u4f20\u9012\u6d88\u606f\/\u503c\u7684\u8fc1\u79fb\u3002\u5b83\u751a\u81f3\u6709\u4e00\u4e2a\u8f85\u52a9\u811a\u672c\uff0c\u53ef\u4ee5\u5b8c\u6210\u9700\u8981\u7684\u6240\u6709\u64cd\u4f5c\u3002\u53ea\u9700\u8981\u6253\u5f00Truffle Box\u5c31\u80fd\u5f97\u5230\u9700\u8981\u7684\u4e00\u5207! Truffle Box\u5305\u62ec\uff1a <\/p>\n
\u6ce8\uff1a\u6865\u63a5\uff08Bridge\uff09\u662f\u4e00\u79cd\u5de5\u5177\uff0c\u5141\u8bb8\u72ec\u7acb\u7684\u533a\u5757\u94fe\u5f7c\u6b64\u901a\u4fe1\uff0c\u5e76\u53d1\u9001\u4ee4\u724c\u3001NFT\u7b49\u3002<\/p>\n
\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u9700\u8981\u5177\u5907\u4ee5\u4e0b\u5148\u51b3\u6761\u4ef6\uff1a<\/p>\n
\u4f7f\u7528\u4ee5\u4e0b\u7ec8\u7aef\u547d\u4ee4\u9a8c\u8bc1\u5df2\u7ecf\u5b89\u88c5\u4e86Node.js: <\/p>\n
node<\/span> -<\/span>v<\/span> &&<\/span> npm<\/span> -<\/span>v<\/span><\/pre>\n\n- Infura\u5e10\u6237 <\/li>\n
- MetaMask\u8d26\u6237 <\/li>\n
- \u57fa\u672c\u4e86\u89e3JavaScript\u548cSolidity <\/li>\n<\/ul>\n
\u6b65\u9aa41\uff1a\u521b\u5efa\u7528\u4e8e\u8bbf\u95ee\u7f51\u7edc\u7684Infura\u5e10\u6237 <\/h3>\n
\u5728\u5b8c\u6210\u5148\u51b3\u6761\u4ef6\u540e\uff0c\u767b\u5f55Infura\u7f51\u7ad9\uff08\u6216\u6ce8\u518c\u65b0\u5e10\u6237\uff09\u3002<\/p>\n
\n
\n<\/p>\n
\u5728\u6210\u529f\u6ce8\u518c\u4e4b\u540e\uff0c\u9875\u9762\u91cd\u5b9a\u5411\u5230Infura\u4eea\u8868\u677f\uff0c\u5728\u90a3\u91cc\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684API\u5bc6\u94a5\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n
\n
\n<\/p>\n
\u70b9\u51fb\u201cCreate a New Key\u201d\u6309\u94ae\uff0c\u586b\u5199\u6240\u9700\u4fe1\u606f\u3002 <\/p>\n
\n
\n<\/p>\n
\u5728\u521b\u5efaAPI\u5bc6\u94a5\u540e\uff0c\u9879\u76eeID\u5c06\u663e\u793a\u5728\u4eea\u8868\u677f\u7684API key\u90e8\u5206\u4e0b\u9762\uff0c\u5982\u4e0b\u9762\u6240\u793a\u3002\u590d\u5236\u5e76\u4fdd\u5b58\u5728\u67d0\u4e2a\u5730\u65b9\uff0c\u5c06\u5728\u672c\u6559\u7a0b\u7684\u540e\u9762\u7528\u5230\u5b83\u3002<\/p>\n
\n
\n<\/p>\n
\u6b65\u9aa42\uff1a\u8bbe\u7f6e\u548c\u5b89\u88c5 <\/h3>\n
\u63a5\u4e0b\u6765\uff0c\u5c06\u8bbe\u7f6eTruffle Optimism Bridge Box\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5728\u9009\u62e9\u7684\u4efb\u4f55\u76ee\u5f55\u4e2d\u8fd0\u884cunbox\u547d\u4ee4\u3002<\/p>\n
npx<\/span> truffle<\/span> unbox<\/span> optimism<\/span>-<\/span>bridge<\/span> <<\/span>DIRECTORY_NAME<\/span>><\/span><\/pre>\n\u7528\u9009\u62e9\u7684\u76ee\u5f55\u540d\u66ff\u6362<DIRECTORY_NAME>\u3002\u6216\u8005\uff0c\u53ef\u4ee5\u5168\u5c40\u5b89\u88c5Truffle\u5e76\u8fd0\u884cunbox\u547d\u4ee4\u3002<\/p>\n
npm<\/span> install<\/span> -<\/span>g<\/span> truffle<\/span>
truffle<\/span> unbox<\/span> optimism<\/span>-<\/span>bridge<\/span> <<\/span>DIRECTORY_NAME<\/span>><\/span><\/pre>\n\u8be5\u547d\u4ee4\u5e94\u8be5\u4e0b\u8f7d\u5e76\u8fd0\u884cnpminstall\u4f5c\u4e3aunbox\u8fc7\u7a0b\u7684\u4e00\u90e8\u5206\u3002<\/p>\n
\n
\n<\/p>\n
\u73b0\u5728\uff0c\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u5c06\u76ee\u5f55\u66f4\u6539\u4e3a\u521a\u521a\u521b\u5efa\u7684\u65b0\u76ee\u5f55\u3002<\/p>\n
cd<\/span> truffle<\/span>-<\/span>bridge<\/span>-<\/span>demo<\/span><\/pre>\n\u6ce8\uff1atruffle-bridge-demo\u662f\u521b\u5efa\u7684\u76ee\u5f55\u7684\u540d\u79f0\u3002 <\/p>\n
\n
\n<\/p>\n
\u5e94\u8be5\u5f97\u5230\u7c7b\u4f3c\u4e8e\u4e0b\u9762\u6240\u793a\u7684\u7ed3\u679c\u3002<\/p>\n
.dotenv npm\u5305\u5df2\u7ecf\u5b89\u88c5\uff0c\u4f46\u662f\u9700\u8981\u5728\u5f00\u7bb1\u540e\u521b\u5efa\u7684.env\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e00\u4e9b\u4fe1\u606f\u3002truulu -config.ovm.js\u6587\u4ef6\u671f\u671b\u5728.env\u6587\u4ef6\u4e2d\u5b58\u5728\u4e00\u4e2aGOERLI_MNEMONIC\u503c\uff0c\u7528\u4e8e\u5728\u4ee5\u592a\u574aGoerli\u548cOptimism Goerli\u6d4b\u8bd5\u7f51\u4e0a\u8fd0\u884c\u547d\u4ee4\uff0c\u5e76\u671f\u671bINFURA_KEY\u8fde\u63a5\u5230\u7f51\u7edc\u3002<\/p>\n
GOERLI_MNEMONIC<\/span>=<\/span>\"<your-wallet-mnemonic>\"<\/span>
INFURA_KEY<\/span>=<\/span>\"<your-infura-key>\"<\/span><\/pre>\n\u5c06<your-infura-key>\u66ff\u6362\u4e3a\u4e4b\u524d\u4eceInfura\u4eea\u8868\u677f\u4e2d\u83b7\u5f97\u7684\u4fe1\u606f\u3002\u3010\u6ce8\u610f\uff1a\u6c38\u8fdc\u4e0d\u8981\u4e0e\u4efb\u4f55\u4eba\u5206\u4eab\u79c1\u94a5(\u52a9\u8bb0\u7b26)\uff0c\u5e76\u59a5\u5584\u4fdd\u7ba1\u3011\u3002\u5c06<your-wallet-mnemonic>\u66ff\u6362\u4e3a\u52a9\u8bb0\u7b26\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\u8981\u4eceMetamask\u4e2d\u68c0\u7d22\u52a9\u8bb0\u7b26\uff0c\u5355\u51fbMetamask\u4e0a\u6240\u793a\u7684\u56fe\u6807\u3002<\/p>\n
\n
\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u5355\u51fbExport Private Key\u6309\u94ae\u590d\u5236\u52a9\u8bb0\u7b26\u3002<\/p>\n
\n
\n<\/p>\n
Git\u5ffd\u7565\u4e86\u8fd9\u4e2a\u9879\u76ee\u4e2d\u7684.env\u6587\u4ef6\uff0c\u4ee5\u5e2e\u52a9\u4fdd\u62a4\u79c1\u6709\u6570\u636e\u3002\u907f\u514d\u5c06\u79c1\u94a5\u6cc4\u9732\u7ed9GitHub\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u5b89\u5168\u5b9e\u8df5\u3002<\/p>\n
\u6b65\u9aa43\uff1a\u4f7f\u7528Truffle L2 Boxes\u6865\u63a5<\/h3>\n
\u5f53\u6253\u5f00\u9879\u76ee\u7684\u76d2\u5b50\u65f6\uff0c\u521b\u5efa\u4e86\u9879\u76ee\u7684\u6240\u6709\u5fc5\u8981\u5408\u540c\u548c\u811a\u672c\u3002\u5728\u4e0b\u4e00\u6b65\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5404\u4e2a\u5408\u7ea6\u548c\u8fc1\u79fb\uff0c\u4ee5\u7406\u89e3\u6865\u63a5\u548c\u4ea4\u4e92\u662f\u5982\u4f55\u5728\u7f51\u7edc\u4e4b\u95f4\u53d1\u751f\u7684\u3002<\/p>\n
\u5408\u7ea6contract\/ethereum\/GreeterL1.sol\u5c55\u793a\u4e86\u5982\u4f55\u901a\u8fc7Optimism bridge\u5c06\u6d88\u606f\u4eceL1\u53d1\u9001\u5230L2\u3002<\/p>\n
\/\/SPDX-License-Identifier: Unlicense<\/span>
\/\/ This contract runs on L1, and controls a Greeter on L2.<\/span>
pragma<\/span> solidity<\/span> ^<\/span>0.8<\/span>.0<\/span>;
import<\/span> { ICrossDomainMessenger<\/span> } from<\/span>
\"@eth-optimism\/contracts\/libraries\/bridge\/ICrossDomainMessenger.sol\"<\/span>;
contract<\/span> GreeterL1<\/span> {
address<\/span> crossDomainMessengerAddr<\/span> =<\/span> 0x5086d1eEF304eb5284A0f6720f79403b4e9bE294<\/span>;
address<\/span> greeterL2Addr<\/span> =<\/span> 0xC0836cCc8FBa87637e782Dde6e6572aD624fb984<\/span>;
function<\/span> setGreeting<\/span>(string<\/span> calldata<\/span> _greeting<\/span>) public<\/span> {
bytes<\/span> memory<\/span> message<\/span>;
message<\/span> =<\/span> abi<\/span>.encodeWithSignature<\/span>(\"setGreeting(string)\"<\/span>,
_greeting<\/span>);
ICrossDomainMessenger<\/span>(crossDomainMessengerAddr<\/span>).sendMessage<\/span>(
greeterL2Addr<\/span>,
message<\/span>,
1000000<\/span> \/\/ within the free gas limit amount<\/span>
);
} \/\/ function setGreeting<\/span>
} \/\/ contract GreeterL1<\/span><\/pre>\n\u8fc1\u79fbmigrations\/3_set_L2_greeting.js\u4f7f\u7528\u4e0a\u9762\u7684\u5408\u7ea6\u4ece\u4ee5\u592a\u574a\u53d1\u9001\u6d88\u606f\u7ed9optimistic\u3002<\/p>\n
var<\/span> Greeter<\/span> =<\/span> artifacts<\/span>.require<\/span>(\"GreeterL1\"<\/span>);
\/**<\/span>
* Set L2 Greeting<\/span>
* Run this migration on L1 to update the L1 greeting.<\/span>
*\/<\/span>
module<\/span>.exports<\/span> =<\/span> async<\/span> function<\/span> (deployer<\/span>) {
console<\/span>.log<\/span>(\"Updating the L2 Greetings contract from L1!\"<\/span>);
const<\/span> instance<\/span> =<\/span> await<\/span> Greeter<\/span>.deployed<\/span>();
const<\/span> tx<\/span> =<\/span> await<\/span> instance<\/span>.setGreeting<\/span>(\"Greetings from Truffle!\"<\/span>);
console<\/span>.log<\/span>(`Greeter txn confirmed on L1! ${<\/span>tx<\/span>.receipt<\/span>.transactionHash<\/span>}<\/span>`<\/span>);
console<\/span>.log<\/span>(`Bridging message to L2 Greeter contract...`<\/span>);
console<\/span>.log<\/span>(
`In about 1 minute, check the Greeter contract \"read\" function: https:\/\/goerli-optimism.etherscan.io\/address\/0xC0836cCc8FBa87637e782Dde6e6572aD624fb984#readContract`<\/span>
);
};<\/pre>\n\u63a5\u4e0b\u6765\uff0ccontracts\/optimism\/GreeterL2.sol\u5408\u7ea6\u901a\u8fc7Optimism bridge\u5411\u53e6\u4e00\u4e2a\u65b9\u5411\uff08L2->L1\uff09\u53d1\u9001\u6d88\u606f\u3002<\/p>\n
\/SPDX-License-Identifier: Unlicense<\/span>
\/\/ This contract runs on L2, and controls a Greeter on L1.<\/span>
pragma<\/span> solidity<\/span> ^<\/span>0.8<\/span>.0<\/span>;
import<\/span> { ICrossDomainMessenger<\/span> } from<\/span>
\"@eth-optimism\/contracts\/libraries\/bridge\/ICrossDomainMessenger.sol\"<\/span>;
contract<\/span> GreeterL2<\/span> {
address<\/span> crossDomainMessengerAddr<\/span> =<\/span> 0x4200000000000000000000000000000000000007<\/span>;
address<\/span> greeterL1Addr<\/span> =<\/span> 0x7fA4D972bB15B71358da2D937E4A830A9084cf2e<\/span>;
function<\/span> setGreeting<\/span>(string<\/span> calldata<\/span> _greeting<\/span>) public<\/span> {
bytes<\/span> memory<\/span> message<\/span>;
message<\/span> =<\/span> abi<\/span>.encodeWithSignature<\/span>(\"setGreeting(string)\"<\/span>,
_greeting<\/span>);
ICrossDomainMessenger<\/span>(crossDomainMessengerAddr<\/span>).sendMessage<\/span>(
greeterL1Addr<\/span>,
message<\/span>,
1000000<\/span> \/\/ irrelevant here<\/span>
);
} \/\/ function setGreeting<\/span>
} \/\/ contract GreeterL2<\/span><\/pre>\n\u8fc1\u79fbmigrations\/4_set_L1_greeting.js\u4f7f\u7528\u4e0a\u8ff0\u5408\u7ea6\u5c06\u6d88\u606f\u4eceOptimism\u53d1\u9001\u5230\u4ee5\u592a\u574a\u3002<\/p>\n
require<\/span>(\"dotenv\"<\/span>).config<\/span>();
const<\/span> sdk<\/span> =<\/span> require<\/span>(\"@eth-optimism\/sdk\"<\/span>);
const<\/span> ethers<\/span> =<\/span> require<\/span>(\"ethers\"<\/span>);
const<\/span> Greeter<\/span> =<\/span> artifacts<\/span>.require<\/span>(\"GreeterL2\"<\/span>);
const<\/span> goerliMnemonic<\/span> =<\/span> process<\/span>.env<\/span>[\"GOERLI_MNEMONIC\"<\/span>];
const<\/span> infuraKey<\/span> =<\/span> process<\/span>.env<\/span>[\"INFURA_KEY\"<\/span>];
const<\/span> sleep<\/span> =<\/span> (milliseconds<\/span>) =><\/span> {
return<\/span> new<\/span> Promise<\/span>((resolve<\/span>) =><\/span> setTimeout<\/span>(resolve<\/span>, milliseconds<\/span>));
};
\/**<\/span>
* Set L1 Greeting<\/span>
* Run this migration on L1 to update the L1 greeting.<\/span>
*\/<\/span>
module<\/span>.exports<\/span> =<\/span> async<\/span> function<\/span> (deployer<\/span>) {
const<\/span> newGreeting<\/span> =<\/span> \"Greetings from Truffle!\"<\/span>; \/\/<---- CHANGE THIS VALUE TO YOUR NAME!!!<\/span>
const<\/span> instance<\/span> =<\/span>