如何在 Javascript SDK 中解码来自 kinesis.getRecords 的数据?
How to decode data from kinesis.getRecords in Javascript SDK?
我正在尝试从 Kinesis 数据流获取数据:
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);
});
}
我看到的结果:
{"type":"Buffer","data":[123,34,73,110,112,117....,125]}
Form AWS CLI 我知道 data
应该是 base64 编码的,但这里有些不同。那么如何从我看到的 data
数组中获取信息呢?
请注意,它不是 NodeJS,而是浏览器中的 Javascript。
解决方案,如果能放在文档中就好了:
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);
}
});
}
我正在尝试从 Kinesis 数据流获取数据:
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);
});
}
我看到的结果:
{"type":"Buffer","data":[123,34,73,110,112,117....,125]}
Form AWS CLI 我知道 data
应该是 base64 编码的,但这里有些不同。那么如何从我看到的 data
数组中获取信息呢?
请注意,它不是 NodeJS,而是浏览器中的 Javascript。
解决方案,如果能放在文档中就好了:
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);
}
});
}