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查询 Indexer 获取交易模块相关数据的示例代码。仅在与 Web3Gateway 交互时使用。

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使用 gRPC

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获取准备交易的响应

import { EvmChainId } from '@injectivelabs/ts-types'
import { Msgs } from '@injectivelabs/sdk-ts/core/modules'
import { getNetworkEndpoints, Network } from '@injectivelabs/networks'
import { IndexerGrpcTransactionApi } from '@injectivelabs/sdk-ts/client/indexer'

const endpoints = getNetworkEndpoints(Network.Testnet)
const indexerGrpcTransactionApi = new IndexerGrpcTransactionApi(endpoints.indexer)

const address = '0x...' // 以太坊地址
const chainId = EvmChainId.Sepolia
const message = { ... } as Msgs
const memo = '...'

const prepareTxResponse = await indexerGrpcTransactionApi.prepareTxRequest({
  address,
  chainId,
  message,
  memo
})

console.log(prepareTxResponse)

​
获取准备 Cosmos 交易的响应

import { getNetworkEndpoints, Network } from '@injectivelabs/networks'
import { IndexerGrpcTransactionApi } from '@injectivelabs/sdk-ts/client/indexer'

const endpoints = getNetworkEndpoints(Network.Testnet)
const indexerGrpcTransactionApi = new IndexerGrpcTransactionApi(endpoints.indexer)

const address = 'inj...'
const message = { ... }

const prepareCosmosTxResponse = await indexerGrpcTransactionApi.prepareCosmosTxRequest({
  address,
  message
})

console.log(prepareCosmosTxResponse)

​
获取使用 Web3Gateway 广播交易的响应

在 node/CLI 环境中使用 MsgBroadcasterWithPk 广播交易，可在 @injectivelabs/sdk-ts 中找到。 在浏览器环境中广播交易的更多详情，请使用 @injectivelabs/wallet-core 的 MsgBroadcaster 类。 
import { Msgs } from '@injectivelabs/sdk-ts/core/modules'
import { ChainId, EvmChainId } from '@injectivelabs/ts-types'
import { WalletStrategy } from '@injectivelabs/wallet-strategy'
import { getNetworkEndpoints, Network } from '@injectivelabs/networks'
import { IndexerGrpcTransactionApi } from '@injectivelabs/sdk-ts/client/indexer'

const endpoints = getNetworkEndpoints(Network.Testnet)
const indexerGrpcTransactionApi = new IndexerGrpcTransactionApi(endpoints.indexer)

const chainId = ChainId.Testnet // Injective 测试网 Chain ID
const evmChainId = EvmChainId.TestnetEvm // Injective Evm 测试网 Chain ID

export const evmRpcEndpoint = `https://eth-sepolia.g.alchemy.com/v2/${process.env.APP_EVM_RPC_KEY}`

const walletStrategy = new WalletStrategy({
  chainId,
  evmOptions: {
    evmChainId,
    rpcUrl: evmRpcEndpoint,
  },
})

const address = '0x...' // 以太坊地址
const message = { ... } as Msgs
const memo = '...'
const response = { ... } // prepareTxRequest 的响应
const signature = await walletStrategy.signEip712TypedData(
      response.getData(),
      address,
    ) /* 参见 @injectivelabs/wallet-strategy 的 WalletStrategy 实现。本质上，如果钱包支持签署以太坊交易，则使用钱包的 signEip712TypedData 方法 */

const broadcastTxResponse = await indexerGrpcTransactionApi.broadcastTxRequest({
  signature,
  chainId,
  message,
  txResponse: response
})

console.log(broadcastTxResponse)

​
获取广播 Cosmos 交易的响应

import { TxRaw } from '@injectivelabs/sdk-ts/types'
import { getNetworkEndpoints, Network } from '@injectivelabs/networks'
import { IndexerGrpcTransactionApi } from '@injectivelabs/sdk-ts/client/indexer'

const endpoints = getNetworkEndpoints(Network.Testnet)
const indexerGrpcTransactionApi = new IndexerGrpcTransactionApi(endpoints.indexer)

const address = 'inj...' // 以太坊地址
const signature = '...' // base64
const txRaw = { ... } as TxRaw
const pubKey = {
  type: string,
  value: string // base64
}

const broadcastCosmosTxResponse = await indexerGrpcTransactionApi.broadcastCosmosTxRequest({
  address,
  signature,
  txRaw,
  pubKey
})

console.log(broadcastCosmosTxResponse)

​
获取 Web3Gateway 费用支付者

import { getNetworkEndpoints, Network } from "@injectivelabs/networks";
import { IndexerGrpcTransactionApi } from "@injectivelabs/sdk-ts/client/indexer";

const endpoints = getNetworkEndpoints(Network.Testnet);
const indexerGrpcTransactionApi = new IndexerGrpcTransactionApi(
  endpoints.indexer
);

const feePayer = await indexerGrpcTransactionApi.fetchFeePayer();

console.log(feePayer);