Question

我正在尝试从Kinesis数据流中获取数据：

callback(null, coingecko.data["loki-network"]);

我看到的结果：

function getRecord(shard_iterator) {

    var getRecParams = {
        ShardIterator: shard_iterator
    };

    kinesis.getRecords(getRecParams, function(err, result) {
            // Loop through all the packages
            for (var record in result.Records) {
                console.log(JSON.stringify(result.Records[record].Data));
                break; // just to see the first one
            }
            //if (result.NextShardIterator) getRecord(result.NextShardIterator);
    });
}

我知道{"type":"Buffer","data":[123,34,73,110,112,117....,125]}的Form AWS CLI应该是base64编码的，但是这里有所不同。那么如何从看到的data数组中获取信息？

请注意，这不是NodeJS，而是浏览器中的Javascript。

Answer 1

解决方案，很高兴将其包含在文档中：

var decoder = new TextDecoder("utf-8");
function getRecord(shard_iterator) {

    var getRecParams = {
        ShardIterator: shard_iterator
    };

    kinesis.getRecords(getRecParams, function(err, result) {
        if (err) {
            console.log("Error in getRecords() from the Kinesis stream.");
            console.log(err);
        } else {
            try {
                // Loop through all the packages
                for (var record in result.Records) {
                    data = result.Records[record].Data
                    decoded = JSON.parse(decoder.decode(data));
                    console.log(decoded);
                }
            } catch(err) {
                console.log("Error parsing the package.");
                console.log(err);
            }
            if (result.NextShardIterator) getRecord(result.NextShardIterator);
        }
    });
}

如何在Javascript SDK中从kinesis.getRecords解码数据？

1 个答案: