Hyperledger Fabric chaincode function that returns the set of results from the GetHistoryForKey stub function.

GetHistoryForKey.js

  async GetHistoryForKey(ctx, key) {
    console.log(`Get history for key ${key}`);
    let iterator = await ctx.stub.getHistoryForKey(key);
    let allResults = [];
    let res = await iterator.next();
    while (!res.done) {
      if (res.value && res.value.value.toString()) {
        let jsonRes = {};
        console.log(res.value.value.toString("utf8"));
        jsonRes.txId = res.value.tx_id;
        jsonRes.timestamp = res.value.timestamp;
        jsonRes.isDelete = res.value.isDelete;
        try {
          jsonRes.value = JSON.parse(res.value.value.toString("utf8"));
        } catch (err) {
          console.log(err);
          jsonRes.value = res.value.value.toString("utf8");
        }
        allResults.push(jsonRes);
      }
      res = await iterator.next();
    }
    iterator.close();
    return JSON.stringify(allResults);
  }
}