Streaming API Developer Guide

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Getting Started with Streaming API
Code Examples
Client Connection Considerations
PushTopic Events (Legacy)
Generic Events (Legacy)
Replay Generic Streaming Events with Durable Generic Streaming
Generic Streaming Quick Start
Create a Streaming Channel
Run a Java Client with Username and Password Login
Run a Java Client with OAuth Bearer Token Login
Generate Events Using REST
Generic Streaming Allocations
Reference: StreamingChannel
Reference: Streaming Channel Push REST API
Monitoring Event Usage
PDF

Run a Java Client with Username and Password Login

Run a Java client that uses EMP Connector to subscribe to the channel with username and password authentication.
  1. Get the EMP Connector project from GitHub. See Download and Build the Project.
  2. In the /src/main/java/com/salesforce/emp/connector/example folder, open the LoginExample.java source file.
  3. Run the LoginExample class and provide arguments.
    Argument Value
    username Username of the logged-in user.
    password Password for the username (or logged-in user).
    channel /u/notifications/ExampleUserChannel
    Optionally, to receive different events, you can include a replay ID as the last argument. Valid values are:
    • –1 — Get all new events sent after subscription. This option is the default.
    • –2 — Get all new events sent after subscription and all past events within the retention window. Use -2 sparingly. If a large volume of event messages is stored, retrieving all event messages can slow performance.
    • Specific number — Get all events that occurred after the event with the specified replay ID.
  4. When you run this client app and generate notifications using the REST resource, the output will look something like: 
    Subscribed: Subscription [/u/notifications/ExampleUserChannel:-1]
Received:
{payload=Broadcast message to all subscribers, event={createdDate=2016-12-13T00:57:36.020Z, replayId=1}}
Received:
{payload=Another message, event={createdDate=2016-12-13T00:58:16.591Z, replayId=2}}
Generally, don’t handle usernames and passwords of others when running code in production. In a production environment, delegate the login to OAuth. The next step connects to Streaming API with OAuth.