Hyperledger Fabric 1.0如何按名称获取 Channels-Java 学习之路

从java SDK创建通道

Channel newChannel = hfclient.
                 newChannel("foo", anOrderer, channelConfiguration, channelConfig);

在docker容器日志通道中成功创建

问题：

无法创建具有相同名称的 Channels - 获取400 BAD REQUEST Channels 是否存在？
我无法通过名称获取 Channels hfclient.getChannel（“”）= null
如何创建 Channels ？
如何从docker容器中查看现有 Channels 列表？

1 回答

您可以通过调用CSCC（Configuration System Chaincode）来查询可用的通道，它提供以下API：

// These are function names from Invoke first parameter
const (
    JoinChain      string = "JoinChain"
    GetConfigBlock string = "GetConfigBlock"
    GetChannels    string = "GetChannels"
)

要做到这一点的Java SDK代码如下所示：

final Channel channel = client.newChannel("");

    channel.addOrderer(client.newOrderer("orderer0", "grpc://localhost:7050"));
    channel.addPeer(client.newPeer("peer0", "grpc://localhost:7051"));

    channel.initialize();

    final TransactionProposalRequest proposalRequest = client.
                                                   newTransactionProposalRequest();

    final ChaincodeID chaincodeID = ChaincodeID.newBuilder()
            .setName("cscc")
            .setPath("github.com/C0rWin/pgdays/chaincode/personsV3")
            .build();

    proposalRequest.setChaincodeID(chaincodeID);
    proposalRequest.setFcn("GetChannels");
    proposalRequest.setProposalWaitTime(TimeUnit.SECONDS.toMillis(10));

    final Collection<ProposalResponse> responses = channel.
                                          sendTransactionProposal(proposalRequest);

回复于 2024-04-29T11:08:55+08:00

Hyperledger Fabric 1.0如何按名称获取 Channels

1 回答

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