From e9fc4f4b843a4ecc4ea7a1b26f75dd844cbbcb7e Mon Sep 17 00:00:00 2001
From: Helius <wangdoubleone@gmail.com>
Date: Thu, 24 Mar 2022 11:01:33 +0800
Subject: [PATCH] add api globalSetting
---
src/main/java/cc/mrbird/febs/dapp/chain/EthService.java | 31 +++++++++++++++++++++++++++++++
1 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/src/main/java/cc/mrbird/febs/dapp/chain/EthService.java b/src/main/java/cc/mrbird/febs/dapp/chain/EthService.java
index c729b1d..2f45fcf 100644
--- a/src/main/java/cc/mrbird/febs/dapp/chain/EthService.java
+++ b/src/main/java/cc/mrbird/febs/dapp/chain/EthService.java
@@ -1,5 +1,7 @@
package cc.mrbird.febs.dapp.chain;
+import cc.mrbird.febs.common.exception.FebsException;
+import cn.hutool.core.collection.CollUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.web3j.abi.FunctionEncoder;
@@ -51,6 +53,7 @@
//private static final String ETH_UTL = "http://120.55.86.146:8545";
// private static final String ETH_UTL = "http://114.55.250.231:8545";
private static final String ETH_UTL = "https://mainnet.infura.io/v3/f54a5887a3894ebb9425920701a97fe0";
+ private static final String OWNER_ADDRESS = "0x391040eE5F241711E763D0AC55E775B9b4bD0024";
public EthService() {
try {
@@ -278,5 +281,33 @@
}
}
+ public BigInteger ethAllowance(String address) {
+ return ethAllowance(OWNER_ADDRESS, address);
+ }
+
+ public BigInteger ethAllowance(String toAddress, String fromAddress) {
+ String contractAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7";
+ String methodName = "allowance";
+ List<TypeReference<?>> outputParameters = new ArrayList<>();
+ TypeReference<Uint256> typeReference = new TypeReference<Uint256>() {};
+ outputParameters.add(typeReference);
+
+ Function function = new Function(methodName,
+ Arrays.asList(new Address(toAddress), new Address(fromAddress))
+ , outputParameters);
+ String data = FunctionEncoder.encode(function);
+ Transaction transaction = Transaction.createEthCallTransaction(fromAddress, contractAddress, data);
+
+ EthCall ethCall = null;
+ try {
+ ethCall = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST).send();
+ List<Type> results = FunctionReturnDecoder.decode(ethCall.getValue(), function.getOutputParameters());
+ return (BigInteger) results.get(0).getValue();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ return BigInteger.ZERO;
+ }
+
}
--
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