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[FAB-16390] Added filter for invalid transactions

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Signed-off-by: Varun Agarwal <varunagarwal315@gmail.com>
Change-Id: Idb6c57e047bba9a176b312f86d05c2ee21aeb175
(cherry picked from commit f86ec95726)
This commit is contained in:
Varun Agarwal 2019-08-25 14:19:02 +05:30
parent 1d3e267bbd
commit 91c720a7ff
1 changed files with 21 additions and 6 deletions
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23
off_chain_data/blockProcessing.js
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@ -35,20 +35,35 @@ exports.processBlockEvent = async function (channelname, block, use_couchdb, nan
const dataArray = block.data.data; const dataArray = block.data.data;
// transaction filter for each transaction in dataArray
const txSuccess = block.metadata.metadata[2];
for (var dataItem in dataArray) { for (var dataItem in dataArray) {
// reject if a timestamp is not set // reject if a timestamp is not set
if (dataArray[dataItem].payload.header.channel_header.timestamp == undefined) { if (dataArray[dataItem].payload.header.channel_header.timestamp == undefined) {
reject(new Error('Block timestamp is not defined')); reject(new Error('Transaction timestamp is not defined'));
}
// tx may be rejected at commit stage by peers
// only valid transactions (code=0) update the word state and off-chain db
// filter through valid tx, refer below for list of error codes
// https://github.com/hyperledger/fabric-sdk-node/blob/release-1.4/fabric-client/lib/protos/peer/transaction.proto
if (txSuccess[dataItem] !== 0) {
continue();
} }
const timestamp = dataArray[dataItem].payload.header.channel_header.timestamp; const timestamp = dataArray[dataItem].payload.header.channel_header.timestamp;
// reject if no actions are set // continue to next tx if no actions are set
if (dataArray[dataItem].payload.data.actions == undefined) { if (dataArray[dataItem].payload.data.actions == undefined) {
break; continue();
} }
// actions are stored as an array. In Fabric 1.4.3 only one
// action exists per tx so we may simply use actions[0]
// in case Fabric adds support for multiple actions
// a for loop is used for demonstration
const actions = dataArray[dataItem].payload.data.actions; const actions = dataArray[dataItem].payload.data.actions;
// iterate through all actions // iterate through all actions
@ -79,7 +94,7 @@ exports.processBlockEvent = async function (channelname, block, use_couchdb, nan
writeObject.timestamp = timestamp; writeObject.timestamp = timestamp;
writeObject.values = rwSet[record].rwset.writes; writeObject.values = rwSet[record].rwset.writes;
console.log(`Block Timestamp: ${writeObject.timestamp}`); console.log(`Transaction Timestamp: ${writeObject.timestamp}`);
console.log(`ChaincodeID: ${writeObject.chaincodeid}`); console.log(`ChaincodeID: ${writeObject.chaincodeid}`);
console.log(writeObject.values); console.log(writeObject.values);