52 lines
2.2 KiB
JavaScript
52 lines
2.2 KiB
JavaScript
// Subscribe to all events on the $all stream. Catch up from the beginning, then listen for any new events as they occur.
|
|
// This can be used (e.g.) for subscribers which populate read models.
|
|
|
|
var esClient = require('../src/client'); // When running in 'eventstore-node/samples' folder.
|
|
// var esClient = require('eventstore-node'); // Otherwise
|
|
|
|
const credentialsForAllEventsStream = new esClient.UserCredentials("admin", "changeit");
|
|
|
|
var esConnection = esClient.createConnection({}, {"hostname": "localhost", "port": 1113});
|
|
esConnection.connect();
|
|
esConnection.once('connected', function (tcpEndPoint) {
|
|
console.log('Connected to eventstore at ' + tcpEndPoint.host + ":" + tcpEndPoint.port);
|
|
var subscription = esConnection.subscribeToAllFrom(null, true, eventAppeared, liveProcessingStarted, subscriptionDropped, credentialsForAllEventsStream);
|
|
console.log("subscription.isSubscribedToAll: " + subscription.isSubscribedToAll);
|
|
});
|
|
|
|
function eventAppeared(subscription, event) {
|
|
// This is where to filter out events which the subscriber isn't interested in.
|
|
// For an example, see 'subscribe-all-events.js'.
|
|
console.log(event.originalEvent.eventStreamId);
|
|
}
|
|
|
|
function subscriptionDropped(subscription, reason, error) {
|
|
if (error) {
|
|
console.log(error);
|
|
}
|
|
console.log('Subscription dropped.');
|
|
}
|
|
|
|
function liveProcessingStarted() {
|
|
console.log("Caught up with previously stored events. Listening for new events.");
|
|
console.log("(To generate a test event, try running 'node store-event.js' in a separate console.)")
|
|
}
|
|
|
|
function eventAppeared(stream, event) {
|
|
console.log(event.originalEvent.eventStreamId, event.originalEvent.eventId, event.originalEvent.eventType);
|
|
// Data:
|
|
// console.log(event.originalEvent.data.toString());
|
|
|
|
// Position in the event stream. Can be persisted and used to catch up with missed events when re-starting subscribers instead of re-reading
|
|
// all events from the beginning.
|
|
// console.log(event.originalPosition);
|
|
}
|
|
|
|
esConnection.on('error', function (err) {
|
|
console.log('Error occurred on connection:', err);
|
|
});
|
|
|
|
esConnection.on('closed', function (reason) {
|
|
console.log('Connection closed, reason:', reason);
|
|
});
|