如果是私人数据，则在超分类帐结构中使用ENDORSEMENT_POLICY_FAILURE

Question

我们正在进行一个项目，在该项目中我们使用了最新的私有数据收集。我们在kubernetes设置中运行对等机。我们有一个如下所述的集合配置，

{
"name": "Org1_PDC2",
"policy": "OR ('Org1.member')",
"requiredPeerCount": 0,
"maxPeerCount": 2,
"memberOnlyRead": true,
"memberOnlyWrite": true,
"blockToLive": 0,
"endorsementPolicy": {
"signaturePolicy": "OR('Org1.member')"
}
}

我们在渠道中有2个组织，每个组织有2个同行。由于我们已经提到了"；Org1_ PDC2"；只需要Org1的签名。但是我们看到交易也被发送到Org2的peer1。但是它在org2中失败，因为它不能访问"；Org1_PDC2"；。我们还观察到，从nodejs应用程序中，当我们提交事务时，它会给我们一个endorsementPolicy Failure，我可以在Org1的peer1日志中看到链代码执行成功，但在Org1日志的peer2日志中，我看到错误为

2020-11-02 13:18:24.249 UTC [gossip.privdata] fetchPrivateData -> DEBU 566a286 Total members that fit some digest: []
2020-11-02 13:18:24.249 UTC [gossip.privdata] fetchPrivateData -> WARN 566a287 Do not know any peer in the channel( mychannel ) that matches the policies , aborting
2020-11-02 13:18:24.249 UTC [gossip.privdata] populateFromRemotePeers -> WARN 566a288 Failed fetching private data from remote peers for dig2src:

2020-11-02 13:18:25.249 UTC [gossip.privdata] RetrievePvtdata -> DEBU 566a28b Could not fetch all missing collection private write sets from remote peers for block [291588] channel=mychannel
2020-11-02 13:18:25.249 UTC [gossip.privdata] prepareBlockPvtdata -> WARN 566a28c Could not fetch all missing eligible collection private write sets for block [291588]. Will commit block with missing private write sets:[txID: 6d14a881ecc6b437f553fc5df7f8fd29d10d92f22f752a2488fc382d535b62e8, seq: 0, namespace: mycc, collection: Org1_PDC2, hash: b8317508d3b677563bb5119626eabfc866ad561358e2d1a7116749d86c952ebe
] channel=mychannel

我们在nodejs应用程序中使用发现选项，选项为

await gateway.connect(connectionProfile, {discovery: { enabled: true, asLocalhost: false}});
const network = await gateway.getNetwork('mychannel');
const contract = await network.getContract(contractName);

在org1客户端的连接配置文件中，我们只保留了来自org1和orderer的对等方的信息。当我们从客户端调用任何事务时，我们得到的错误消息是

[TransactionEventHandler]: strategyFail: commit failure for transaction "e7080f63ff9be02002d2723b7431b1e9f236c8119c7c37e7dd21bf924a8a5b7a": TransactionError: Commit of transaction e7080f63ff9be02002d2723b7431b1e9f236c8119c7c37e7dd21bf924a8a5b7a failed on peer peer1.org1.svc.cluster.local with status ENDORSEMENT_POLICY_FAILURE

Answer 1

在使用该Contract调用事务之前，您可能需要让客户端SDK了解链代码使用contract.addDiscoveryInterest()访问的集合，如本教程页面所述：

https://hyperledger.github.io/fabric-sdk-node/release-2.2/tutorial-discovery-fabric-network.html

如果不成功，那么您可以明确设置用于transaction.setEndorsingOrganizations():背书的组织

https://hyperledger.github.io/fabric-sdk-node/release-2.2/module-fabric-network.Transaction.html#setEndorsingOrganizations