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dynamodb-touch
Advanced tools
[](https://travis-ci.org/mapbox/dynamodb-touch)
Simulated DynamoDB Stream events based on the contents of a DynamoDB table.
Performs either a GetItem, Query, or Scan operation on a DynamoDB table, then
passes each resulting record into a Kinesis stream in a wrapper identical to
what would be provided by a DynamoDB stream INSERT
event.
You must provide your own configured Dyno and Kinesis clients. The Kinesis client must be pre-configured to provide the stream name with each request.
var touch = require('dynamodb-touch');
var AWS = require('aws-sdk');
var Dyno = require('dyno');
var clients = {
dyno: Dyno({
table: 'my-dynamodb-table',
region: 'us-east-1'
}),
kinesis: new AWS.Kinesis({
region: 'us-east-1',
params: { StreamName: 'my-kinesis-stream' }
})
};
// send one event for a dynamodb record with the provided key
touch.one({ id: 'some-record' }, clients, function(err) {
if (err) throw err;
});
// query dynmodb, sending events for each result
touch.some({
KeyConditions: {
id: {
ComparisonOperator: 'EQ',
AttributeValueList: ['some-record']
}
}
}, clients, function(err) {
if (err) throw err;
});
// scan every record in dynamodb, sending events for each result
touch.every(clients, function(err) {
if (err) throw err;
});
// send one event for a feature that has already been fetched
var item = { id: 'record-id', data: 'record-data' };
touch.thisOne(item, clients, function(err) {
if (err) throw err;
});
A Kinesis event will contain a Data
property. For dynamodb-touch events, this
will be a base64-encoded JSON string which mimics a DynamoDB Stream event.
kinesis.getRecords({ ShardIterator: 'xyz' }, function(err, data) {
var record = data.Records[0];
var dynamodbEvent = JSON.parse((new Buffer(record.Data, 'base64')).toString());
console.log(JSON.stringify(dynamodbEvent, null, 2));
});
... will console.log:
{
"eventId": "0",
"eventVersion": "1.0",
"awsRegion": "us-east-1",
"eventSourceARN": "arn:aws:dynamodb:us-east-1:000000000000:table/my-dynamodb-table/dynamodb-touch",
"eventSource": "dynamodb-touch",
"eventName": "INSERT",
"dynamodb": {
"Keys": {
"id": { "S": "my-record" }
},
"NewImage": {
"id": { "S": "my-record" },
"data": { "B": "aGVsbG8geW91" }
},
"StreamViewType": "NEW_IMAGE",
"SequenceNumber": "0",
"SizeBytes": 52
}
}
FAQs
[](https://travis-ci.org/mapbox/dynamodb-touch)
The npm package dynamodb-touch receives a total of 2 weekly downloads. As such, dynamodb-touch popularity was classified as not popular.
We found that dynamodb-touch demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 43 open source maintainers collaborating on the project.
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