opb-sdk-java

opb-sdk-java

opb-sdk-java

opb-sdk-java (open alliance chain SDK java)

引入 opb-sdk-java

从maven中央仓库引入 (load from central maven)

https://mvnrepository.com/artifact/io.github.bianjieai

<dependency>
    <groupId>io.github.bianjieai</groupId>
    <artifactId>opb-sdk</artifactId>
    <version>${version}</version>
</dependency>

手动下载引入 (manual load)

从 Asset 页面下载jar包，并手动将jar包上传到私服

Key Manger管理

0 新生成一个助记词(如果已有私钥/keystore/助记词忽略此步骤)

        KeyManager km=KeyManagerFactory.createDefault();
        String mnemonic=km.add();
        System.out.println("助记词："+mnemonic);
        System.out.println("地址："+km.getCurrentKeyInfo().getAddress());

1 恢复私钥 (recover privKey)

1.1 从助记词恢复(recover from mnemonic)

        String mnemonic="opera xxx ..."；
        KeyManager km=KeyManagerFactory.createDefault();
        km.recover(mnemonic);

1.2 从私钥(recover from privKey)

        BigInteger privKey=new BigInteger("3c49175daf981965679bf88d2690e22144424e16c84e9d397ddb58b63603eeec",16);
        KeyManager km=KeyManagerFactory.createKeyManger(AlgoEnum.SM2);
        km.recover(privKey);

1.3 从keystore恢复(recover from keystore)

        String keystore="-----BEGIN TENDERMINT PRIVATE KEY-----\n"+
        "salt: 183EF9B57DEF8EF8C3AD9D21DE672E1B\n"+
        "type: sm2\n"+
        "kdf: bcrypt\n"+
        "\n"+
        "cpreEPwi0X3yIdsAIf94fR6s8L1TnDAQd/r4ifID6GmQX5a+4ehMmnTp2JjDpUe5\n"+
        "kpgRI7CzF0DjKpPLvY9V9ZSXJFN42LHWscxqQ1E=\n"+
        "=nJvd\n"+
        "-----END TENDERMINT PRIVATE KEY-----";

        InputStream input=new ByteArrayInputStream(keystore.getBytes(StandardCharsets.UTF_8));
        KeyManager km=KeyManagerFactory.createDefault();
        km.recover(input,"123456");

2 导出(export)

        BigInteger privKey=new BigInteger("3c49175daf981965679bf88d2690e22144424e16c84e9d397ddb58b63603eeec",16);
        KeyManager km=KeyManagerFactory.createDefault();
        km.recover(privKey);

        String keystore=km.export("123456");
        System.out.println(keystore);

怎样使用opb-sdk-java(How to use opb-sdk-java)

1-1 初始化OpbClient (连接测试网 connect testnet)

        String mnemonic="opera vivid pride shallow brick crew found resist decade neck expect apple chalk belt sick author know try tank detail tree impact hand best";
        KeyManager km=KeyManagerFactory.createDefault();
        km.recover(mnemonic);

        // projectID: 填你的 projectID
        String nodeUri="http://testnet.bianjie.ai:26657";
        String grpcAddr="testnet.bianjie.ai:9090";
        String chainId="testing";
        ClientConfig clientConfig=new ClientConfig(nodeUri,grpcAddr,chainId);
        OpbConfig opbConfig=null;

        OpbClient client=new OpbClient(clientConfig,opbConfig,km);
        assertEquals("iaa1ytemz2xqq2s73ut3ys8mcd6zca2564a5lfhtm3",km.getCurrentKeyInfo().getAddress());

1-2 初始化OpbClient (连接开放联盟链 connect open alliance chain)

        String mnemonic="opera vivid pride shallow brick crew found resist decade neck expect apple chalk belt sick author know try tank detail tree impact hand best";
        KeyManager km=KeyManagerFactory.createDefault();
        km.recover(mnemonic);

        // projectID: 填你的 projectID
        String nodeUri="https://opbningxia.bsngate.com:18602/api/${projectID}/rpc";
        String grpcAddr="opbningxia.bsngate.com:18603";
        String chainId="wenchangchain";
        ClientConfig clientConfig=new ClientConfig(nodeUri,grpcAddr,chainId);
        OpbConfig opbConfig=new OpbConfig(${projectID},${projectKey},km.getCurrentKeyInfo().getAddress()); // 如果没有 projectKey 传null
        // 开启 TLS 连接
        opbConfig.setRequireTransportSecurity(true);

        OpbClient client=new OpbClient(clientConfig,opbConfig,km);
        assertEquals("iaa1ytemz2xqq2s73ut3ys8mcd6zca2564a5lfhtm3",km.getCurrentKeyInfo().getAddress());

    // tips: 连接大唐链需要修改bench32前缀
    km.setHrp("dtc");

2 构造 txBodyBz (construct txBodyBz)

        // 该 client 类型：opbClient
        BaseClient baseClient=client.getBaseClient();
                TxEngine txEngine=baseClient.getTxEngine();

                // 以 editNft 交易为例构造 txBody
                Tx.MsgEditNFT msg=Tx.MsgEditNFT
                .newBuilder()
                .setDenomId(denomID)
                .setId(id)
                .setName(name)
                .setUri(uri)
                .setData(data)
                .setSender(baseClient.getCurrentAddr())
                .build();
                List<GeneratedMessageV3> msgs=Collections.singletonList(msg);
        TxOuterClass.TxBody txBody=txEngine.buildTxBody(msgs);
        byte[]txBodyBz=txBody.toByteArray();

3 构造 authInfoBz (construct authInfoBz)

参见前一下小结，需要先构造 txBody (see previous of this content, construct txBody first)

        TxOuterClass.TxBody txBody=txEngine.buildTxBody(msgs);
        TxOuterClass.Tx tx=txEngine.signTx(txBody,baseTx,baseClient.queryAccount());
        TxOuterClass.AuthInfo authInfo=tx.getAuthInfo();
        byte[]authInfoBz=authInfo.toByteArray();

4 签名 / 其它发送交易的方法 (sign / user other method to send tx)

        // 使用 txEngine 签名交易
        TxOuterClass.Tx tx=txEngine.signTx(txBody,baseTx,baseClient.queryAccount());
                byte[]txBz=tx.toByteArray();
                // 使用 rpcClient 将签名好的 txBz 直接发送到区块链
                RpcClient rpcClient=baseClient.getRpcClient();
                ResultTx resultTx=rpcClient.broadcastTx(txBz,BroadcastMode.Commit);
                // ---
                // 当然也可以自己使用 httpClient 进行发送，将 txBz 进行 base64 编码，并使用 jsonRpc 发送， 代码如下
                JsonRpc jsonRpc=JsonRpc.WrapTxBytes(txBytes,"broadcast_tx_commit");
                String str=httpUtils.post(rpcUri,JSON.toJSONString(jsonRpc)); // rpcUri: 链uri，第二个参数post 的body

离线HASH (offline hash calculate)

        String txHash=client.getBaseClient().buildTxHash(msg,baseTx,account);

使用NFT模块(Use NftClient)

完整 Demo 示例详见: NftDemo.java

1. 新增一个denom(issue denom)

        //「创建NFT/MT类别」为 40 万能量值（等值人民币：0.1元）
        BaseTx baseTx=new BaseTx(400000,new Fee("400000","ugas"),BroadcastMode.Commit);
        String denomID="denomid"+new Random().nextInt(1000);
        String denomName="test_name"+new Random().nextInt(1000);
        String schema="no shcema";

        IssueDenomRequest req=new IssueDenomRequest()
        .setId(denomID)
        .setName(denomName)
        .setSchema(schema);
        ResultTx resultTx=nftClient.issueDenom(req,baseTx);

2. 发行一个nft(mint nft)

        //「发行NFT/MT」为 40 万能量值（等值人民币：0.1元）
        BaseTx baseTx=new BaseTx(400000,new Fee("400000","ugas"),BroadcastMode.Commit);
        MintNFTRequest mintReq=new MintNFTRequest()
        .setDenom(denomID)
        .setId(nftID)
        .setName(nftName)
        .setUri(uri)
        .setData(data)
        .setRecipient(km.getAddr());
        ResultTx resultTx=nftClient.mintNft(mintReq,baseTx);

3. 编辑/修改存在的nft(edit nft)

        //「编辑修改NFT/MT」20 万能量值（等值人民币：0.05元）
        BaseTx baseTx=new BaseTx(200000,new Fee("200000","ugas"),BroadcastMode.Commit);
        String newName="new_name";
        String newUri="http://xx.com";
        String newData="new_data";
        EditNFTRequest editReq=new EditNFTRequest()
        .setDenom(denomID)
        .setName(newName)
        .setId(nftID)
        .setUri(newUri)
        .setData(newData);
        ResultTx resultTx=nftClient.editNft(editReq,baseTx);

4. 销毁nft(burn nft)

        //「销毁NFT/MT」20 万能量值（等值人民币：0.05元）
        BaseTx baseTx=new BaseTx(200000,new Fee("200000","ugas"),BroadcastMode.Commit);
        BurnNFTRequest burnNFTReq=new BurnNFTRequest()
        .setDenom(denomID)
        .setId(nftID);
        Result resultTx=nftClient.burnNft(burnNFTReq,baseTx);

5. 查询denom (query denom)

        QueryDenomResp denom=nftClient.queryDenom(denomID);

        // next is findAll
        List<QueryDenomResp> denoms=nftClient.queryDenoms(null);

6. 通过owner查询 (query by owner)

        QueryOwnerResp owner=nftClient.queryOwner(denomID,km.getAddr());

使用TIBC模块(Use TibcClient)

1. 发起NFT跨链交易(tibc-nft-transfer transfer)

        BaseTx baseTx=new BaseTx(200000,new Fee("300000","stake"),BroadcastMode.Commit);
        String class_="denom01";
        String id="nft26";
        String destChainName="iris-test1";
        String relayerChainName="";
        String receiver="iaa14u80vaseg99lxej9cvlmfz96xe8mvv6p6g469p";
        ResultTx resultTx=tibcClient.nftTransfer(class_,id,receiver,destChainName,relayerChainName,baseTx);

2. 查询NFT跨链交易的commitment(tibc packet packet-commitment)

        BaseTx baseTx=new BaseTx(200000,new Fee("300000","stake"),BroadcastMode.Commit);
        String destChain="iris-test1";
        String sourceChain="iris-test2";
        long sequence=2;
        QueryOuterClass.QueryPacketCommitmentResponse commitment=tibcClient.packetCommitment(destChain,sourceChain,sequence);

使用授权模块 (Use PermClient)

1. 授予某个地址权限 (Assign role to specify address)

        Perm.Role role=Perm.Role.BLACKLIST_ADMIN;
        ResultTx resultTx=permClient.assignRoles(acc,Collections.singletonList(role),baseTx);
        assertNotNull(resultTx.getResult().getHash());

2. 查询地址的当前权限 (Current role of input address)

        List<Perm.Role>roles=permClient.queryRoles(acc);

3. 删除某个地址权限 (Assign role to specify address)

        permClient.unAssignRoles(acc,Collections.singletonList(role),baseTx);

4. perm模块的其他查询和交易 (other query and tx in this module)

查看 permClient 下的方法 (see method in perClient.java)

FeeGrant(代付)模块使用

1. 设置代付的账号

        BaseTx baseTx=new BaseTx(200000,new Fee("300000","ugas"),BroadcastMode.Commit);
        baseTx.setFeeGranter("FeeGranter 地址");

2. FeeGrant的方法说明

GrantAllowance(String granter, String grantee, BaseTx baseTx)：授予全部额度
GrantAllowance(String granter, String grantee, String denom, String amount, Timestamp timestamp, BaseTx baseTx) ：授予指定额度
RevokeAllowance(String granter, String grantee, BaseTx baseTx) ：撤销授权