Samples: Storing events and subscribing.

samples/storeevent.js

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+var esClient = require('../src/client');      // When running in 'eventstore-node/samples' folder. 
+// var esClient = require('eventstore-node'); // Otherwise
+var uuid = require('uuid');
+
+var esConnection = esClient.createConnection({}, {"hostname": "localhost", "port": 1113});
+esConnection.connect();
+esConnection.once('connected', function (tcpEndPoint) {
+    console.log('Connected to eventstore at ' + tcpEndPoint.hostname + ":" + tcpEndPoint.port);
+    var userId = uuid.v4();
+    // This event could happen as a result of (e.g.) a 'CreateUser(id, username, password)' command.
+    var userCreatedEvent = {
+        id: userId,      
+        username: "user" + uuid.v4().substring(0,6),  // Hard-to-spell exotic username.
+        password: Math.random().toString()                      // Hard-to-guess password. 
+    };
+    var eventId = uuid.v4();
+    var event = esClient.createJsonEventData(eventId, userCreatedEvent, null, "UserCreated");
+    // Every user has her/his own stream of events:
+    var streamName = "user-" + userId;
+    console.log("Storing event. Look for it at http://localhost:2113/web/index.html#/streams/user-" + userId);
+    esConnection.appendToStream(streamName, esClient.expectedVersion.any, event)
+        .then(function(result) {
+            console.log("Event stored.");
+            process.exit(0);
+        })
+        .catch(function(err) {
+            console.log(err);
+            process.exit(-1);
+        });
+});
+
+esConnection.on('error', function (err) {
+  console.log('Error occurred on connection:', err);
+  process.exit(-1);  
+});
+
+esConnection.on('closed', function (reason) {
+  console.log('Connection closed, reason:', reason);
+  process.exit(-1);
+});

samples/subscribe.js

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+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");
+const resolveLinkTos = false;
+
+var esConnection = esClient.createConnection({}, {"hostname": "localhost", "port": 1113});
+esConnection.connect();
+esConnection.once('connected', function (tcpEndPoint) {
+    console.log('Connected to eventstore at ' + tcpEndPoint.hostname + ":" + tcpEndPoint.port);
+});
+
+function belongsToAUserAggregate(event) {
+    return event.originalEvent.eventStreamId.startsWith("user-")
+}
+
+function eventAppeared(subscription, event) {
+    // Ignore all events which aren't about users:
+    if(belongsToAUserAggregate(event)) {
+        var aggregateId = event.originalEvent.eventStreamId;
+        var eventId = event.originalEvent.eventId;
+        var eventType = event.originalEvent.eventType;
+        var eventCreated = event.originalEvent.created;
+        console.log(aggregateId, eventType, eventId, eventCreated);
+        console.log(event.originalEvent.data.toString() + "\n");
+    }
+}
+
+function subscriptionDropped(subscription, reason, error) {
+    if (error) return test.done(error);
+    console.log('Subscription dropped.');
+}
+
+esConnection.subscribeToAll(resolveLinkTos, eventAppeared, subscriptionDropped, credentialsForAllEventsStream)
+    .then(function(subscription) {
+    console.log("subscription.isSubscribedToAll: " + subscription.isSubscribedToAll);
+    })
+    .catch(console.log("Caught."));
+
+esConnection.on('error', function (err) {
+  console.log('Error occurred on connection:', err);
+});
+
+esConnection.on('closed', function (reason) {
+  console.log('Connection closed, reason:', reason);
+  process.exit(-1);
+});