{"id":208081,"date":"2025-07-08T09:24:21","date_gmt":"2025-07-08T01:24:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208081\/"},"modified":"2025-07-08T09:24:21","modified_gmt":"2025-07-08T01:24:21","slug":"hyperledger-fabric-registerchaincodeevent-%e6%96%b9%e6%b3%95%e6%9c%aa%e4%bb%8e%e9%93%be%e7%a0%81%e8%8e%b7%e5%8f%96%e4%ba%8b%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208081\/","title":{"rendered":"Hyperledger Fabric registerChaincodeEvent() \u65b9\u6cd5\u672a\u4ece\u94fe\u7801\u83b7\u53d6\u4e8b\u4ef6"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> Hyperledger Fabric registerChaincodeEvent() \u65b9\u6cd5\u672a\u4ece\u94fe\u7801\u83b7\u53d6\u4e8b\u4ef6<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-28 20:15:33<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300aHyperledger Fabric registerChaincodeEvent() \u65b9\u6cd5\u672a\u4ece\u94fe\u7801\u83b7\u53d6\u4e8b\u4ef6\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6210\u529f\u90e8\u7f72\u6211\u7684\u94fe\u7801\u5e76\u80fd\u591f\u4ece\u5176\u6570\u636e\u4e2d\u6267\u884c\u4e00\u4e9b\u83b7\u53d6\uff08\u8fd4\u56de\u7684\u6240\u6709\u6570\u636e\u90fd\u662f\u6b63\u786e\u7684\uff09\u540e\uff0c\u6211\u65e0\u6cd5\u68c0\u67e5\u662f\u5426\u53d1\u51fa\u4e86\u4e8b\u4ef6\u3002 invoke()<\/code> \u5185\u90e8\u7684\u51fd\u6570\u662f queryallmachines()<\/code> \uff0c\u5982\u679c\u6211\u53ea\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570\uff0c\u5b83\u4f1a\u8fd4\u56de\u4e00\u7ec4\u673a\u5668\uff08\u8be5\u7ec4\u673a\u5668\u63d2\u5165\u65b9\u6cd5 initledger() \u4e2d\uff09<\/p>\n

\u6211\u9075\u5faa\u6587\u6863\uff0c\u6211\u7684\u94fe\u4ee3\u7801\uff08\u5728 go \u4e2d\uff09\u5e94\u8be5\u5728\u5176 queryallmachines()<\/code> \u51fd\u6570\u5185\u7684\u6b64\u4ee3\u7801\u884c\u4e2d\u53d1\u51fa\u4e00\u4e2a\u4e8b\u4ef6\uff1a<\/p>\n

func (s *testcontract) queryallmachines(apistub shim.chaincodestubinterface) sc.response {\n    fmt.println(\"inside queryallmachines\\n\")\n    ...\n    err = apistub.setevent(\"evtsender\", []byte(\"adadsads\"))\n    if err != nil {\n        return shim.error(\"event not set\")\n    }\n    fmt.printf(\"no errors\\n\")\n}<\/pre>\n
\u6b64\u4ee3\u7801\u59cb\u7ec8\u6253\u5370\u201c\u65e0\u9519\u8bef\u201d\uff0c\u56e0\u6b64\u6211\u8ba4\u4e3a\u4e8b\u4ef6\u5df2\u6b63\u786e\u53d1\u51fa\u3002<\/p>\n
\u7136\u540e\u5728\u6211\u7684 .js \u67e5\u8be2\u6587\u4ef6\u4e2d\u6211\u6709\u8bf7\u6c42\uff1a<\/p>\n
let request = {\n        chaincodeid: 'oraclize-test-integration',\n        fcn: 'queryallmachines',\n        args: [''],\n        txid: tx_object\n    };<\/pre>\n
\u7136\u540e\u8fd9\u662f\u6211\u7684 .js \u6587\u4ef6\u4e2d\u51fa\u73b0\u95ee\u9898\u7684\u90e8\u5206\uff0c\u6211\u60f3\u5728\u5176\u4e2d\u542f\u52a8 registerchaincodeevent()<\/code>\uff1a<\/p>\n
let event_monitor = new promise((resolve, reject) => {\n        let regid = null;\n        let handle = settimeout(() => {\n            if (regid) {\n                \/\/ might need to do the clean up this listener\n                channel_event_hub.unregisterchaincodeevent(regid);\n                console.log('timeout - failed to receive the chaincode event');\n            }\n            reject(new error('timed out waiting for chaincode event'));\n        }, 20000);\n\n        regid = channel_event_hub.registerchaincodeevent('oraclize-test-integration', 'evtsender',\n            (event, block_num, txnid, status) => {\n                \/\/ this callback will be called when there is a chaincode event name\n                \/\/ within a block that will match on the second parameter in the registration\n                \/\/ from the chaincode with the id of the first parameter.\n                console.log('successfully got a chaincode event with transid:' + txnid + ' with status:' + status);\n\n                \/\/ might be good to store the block number to be able to resume if offline\n                storeblocknumforlater(block_num);\n\n                \/\/ to see the event payload, the channel_event_hub must be connected(true)\n                let event_payload = event.payload.tostring('utf8');\n                if (event_payload.indexof('chaincode') > -1) {\n                    cleartimeout(handle);\n                    \/\/ chaincode event listeners are meant to run continuously\n                    \/\/ therefore the default to automatically unregister is false\n                    \/\/ so in this case we want to shutdown the event listener once\n                    \/\/ we see the event with the correct payload\n                    channel_event_hub.unregisterchaincodeevent(regid);\n                    console.log('successfully received the chaincode event on block number ' + block_num);\n                    resolve('received');\n                } else {\n                    console.log('successfully got chaincode event ... just not the one we are looking for on block number ' + block_num);\n                }\n            }, (error) => {\n                cleartimeout(handle);\n                console.log('failed to receive the chaincode event ::' + error);\n                reject(error);\n            }\n            \/\/ no options specified\n            \/\/ startblock will default to latest\n            \/\/ endblock will default to max\n            \/\/ unregister will default to false\n            \/\/ disconnect will default to false\n        );\n    });\n\n    \/\/ build the promise to send the proposals to the orderer\n    let send_trans = channel.sendtransaction({\n        proposalresponses: query_responses[0],\n        proposal: query_responses[1]\n    });\n\n    \/\/ now that we have two promises all set to go... execute them\n    return promise.all([event_monitor, send_trans]);<\/pre>\n
\u51fa\u73b0\u7684\u9519\u8bef\u662f\uff1a<\/p>\n
 \u8d85\u65f6 – \u65e0\u6cd5\u63a5\u6536\u94fe\u7801\u4e8b\u4ef6\uff08\u8282\u70b9\uff1a9180\uff09 unhandledpromiserejectionwarning\uff1a\u672a\u5904\u7406\u7684\u627f\u8bfa\u62d2\u7edd \uff08\u62d2\u7edd id\uff1a3\uff09\uff1a\u9519\u8bef\uff1a\u7b49\u5f85\u94fe\u7801\u4e8b\u4ef6\u8d85\u65f6 \uff08\u8282\u70b9\uff1a9180\uff09[dep0018] deprecationwarning\uff1a\u672a\u5904\u7406\u7684\u627f\u8bfa\u62d2\u7edd \u5df2\u5f03\u7528\u3002\u4ee5\u540e\u627f\u8bfa\u62d2\u7edd\u4e0d\u5904\u7406\u7684 \u5c06\u4f7f\u7528\u975e\u96f6\u9000\u51fa\u4ee3\u7801\u7ec8\u6b62 node.js \u8fdb\u7a0b\u3002 <\/p>\n
\u56e0\u6b64\uff0c\u5373\u4f7f\u6211\u542f\u52a8\u53e6\u4e00\u4e2a\u6210\u529f\u6267\u884c\u5bf9 queryallmachines()<\/code> \u51fd\u6570\u7684\u8c03\u7528\u7684\u53e6\u4e00\u4e2a .js \u6587\u4ef6\uff0c\u51fd\u6570\u4e5f\u4f1a\u5728\u8fd9\u90e8\u5206\u4ee3\u7801\u4e2d\u8d85\u65f6\uff1a<\/p>\n
let handle = setTimeout(() => {\n            if (regid) {\n                \/\/ might need to do the clean up this listener\n                channel_event_hub.unregisterChaincodeEvent(regid);\n                console.log('Timeout - Failed to receive the chaincode event');\n            }\n            reject(new Error('Timed out waiting for chaincode event'));\n        }, 20000);<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u6700\u65b0\u7684\u9ad8\u7ea7 api \u8ba9\u4e00\u5207\u53d8\u5f97\u7b80\u5355\uff0c<\/p>\n
const listener = await contract.addContractListener('asset creation-listener', 'saveAsset123456789', (err, event, blockNumber, transactionId, status) => {\n            if (err) {\n                console.error(err);\n                return;\n            }\n            console.log(`The event payload is :${event.payload}`)\n            console.log(`Block Number: ${blockNumber} Transaction ID: ${transactionId} Status: ${status}`);\n        })<\/pre>\n
\u67e5\u770b \u6587\u6863\u4ee5\u83b7\u53d6\u66f4\u591a\u4fe1\u606f<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300aHyperledger Fabric registerChaincodeEvent() \u65b9\u6cd5\u672a\u4ece\u94fe\u7801\u83b7\u53d6\u4e8b\u4ef6\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-208081","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=208081"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208081\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}