[英]In lambda using node.js how can I parse the data from a kinesis stream
I have the following lambda function set up with kinesis as its event source. 我将以下lambda函数设置为kinesis作为其事件源。 The data is coming through as a stream, here I am parsing this to come through as a string eg
{id=2, sourceIp=220.220.1.220 }
. 数据以流形式传递,在这里我将其解析为字符串,例如
{id=2, sourceIp=220.220.1.220 }
。 I want to convert this to an object in node.js. 我想将它转换为node.js中的对象。 How can I do this?
我怎样才能做到这一点?
exports.handler = (event, context) => {
event.Records.forEach(function(record) {
var data = new Buffer(record.kinesis.data, 'base64').toString('ascii');
console.log('data: ', data)
});
};
我想你想要做的是:
var data = JSON.parse(new Buffer(record.kinesis.data, 'base64'));
I'm not familiar with the actual output of Kinesis but I'm a bit confused by the example you've given. 我不熟悉Kinesis的实际输出,但我对你给出的例子感到有些困惑。 The test example test even in lambda shows the Kinesis object looking like this
即使在lambda中测试示例测试也显示Kinesis对象看起来像这样
"kinesis": {
"partitionKey": "partitionKey-3",
"data": "SGVsbG8sIHRoaXMgaXMgYSB0ZXN0IDEyMy4=",
"kinesisSchemaVersion": "1.0",
"sequenceNumber": "49545115243490985018280067714973144582180062593244200961"
}
Which means the parsed string should look something like "id=2,sourceIp=220.220.1.220"
from your example. 这意味着解析后的字符串应该与您的示例中的
"id=2,sourceIp=220.220.1.220"
。 If that is the case you could do something convoluted like this to get the data into a proper object. 如果是这种情况,您可以像这样做一些令人费解的事情,以将数据转换为适当的对象。
var json = {};
data.split(',').map(function(each){
return each.split('=');
}).forEach(function(pair){
json[pair[0]] = pair[1];
});
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