Table load by server side and then updated by push data
Table load by server side and then updated by push data
I have a datatable loaded by server side data, everything is ok. Now, I want to update the data by listen notifications on AWS SQS, when I get a new row data, I try this:
// Initialize the Amazon Cognito credentials provider
AWS.config.region = 'us-west-2'; // Region
/**
* Gets the user's Identity
*/
$.getJSON("/cognito", function(data) {
if (data) {
IdentityId = data.IdentityId;
AWS.config.credentials = new AWS.CognitoIdentityCredentials({
IdentityPoolId: IdentityPoolId,
IdentityId: data.IdentityId,
Logins: {
"cognito-identity.amazonaws.com": data.Token
}
});
var queue = new AWS.SQS({params: {QueueUrl: QueueUrl, WaitTimeSeconds: 20}}); // using url to queue
getMessages(queue);
}
});
/**
* Gets the message from SQS
*/
function getMessages(queue) {
queue.receiveMessage(function (err, data) {
if (data) {
if (data.Messages.length == 0) return;
try {
// here add a row or rows, but it trigger a call to refresh data from server side instead.
if (data.Messages.length > 1)
table.rows.add(data.Messages.map(transformMessage)).draw();
else
table.row.add(transformMessage(data.Messages[0])).draw();
// now delete the messages
queue.deleteMessageBatch({
QueueUrl: QueueUrl,
Entries: data.Messages.map(function(Message) {
return {
Id: Message.MessageId,
ReceiptHandle: Message.ReceiptHandle
};
})
}, function(err, data) {
if (err) console.error(err);
});
getMessages(queue);
} catch (e) {
console.error(e);
}
}
});
}
But as the table was setup by server procesing, every time that I call draw the table call the ajax data instead to use the new row(s) added.
There is a way to "disable" ajax calls temporary? Because, I don't want disable all time, I want server side processing for pagination and search, only want to add my new row without call the server.