29West LBM Adapter Sample

Contents

Importing This Sample into StreamBase Studio
Sample Location
Running This Sample in StreamBase Studio
Running This Sample in Terminal Windows

This sample demonstrates the use of the StreamBase 29West LBM adapter.

Importing This Sample into StreamBase Studio

In StreamBase Studio, import this sample with the following steps:

  • From the top menu, click File → Load StreamBase Sample.

  • Select this sample from the Embedded Input Adapters list.

  • Click OK.

StreamBase Studio creates a project for this sample.

Sample Location

By default, the sample files are installed in:

On Windows

C:\Program Files\StreamBase Systems\StreamBase.n.m\sample\adapter\embedded\29west-lbm\

On UNIX

/opt/streambase/sample/adapter/embedded/29west-lbm/

When you load the sample into StreamBase Studio, Studio copies the sample project's files to your Studio workspace. StreamBase Systems recommends that you use the workspace copy of the sample, especially on UNIX, where you may not have write access to /opt/streambase. In the default installation, the path to this sample in your Studio workspace is: 

UNIX:       
   ~/streambase-studio-n.m-workspace/sample_adapter_embedded_29west-lbm
Windows XP:
   C:\Documents and Settings\username\My Documents\
      StreamBase Studio n.m Workspace\sample_embedded_29west-lbm
Windows 7 and Windows Vista:
   C:\Users\username\Documents\StreamBase Studio n.m Workspace\
      sample_embedded_29west-lbm

Running This Sample in StreamBase Studio

  1. In the Package Explorer, double-click 29west-lbm.sbapp.

  2. Click the Run button. This opens the SB Test/Debug perspective and starts the application.

  3. In the Test/Debug Perspective, open the Application Output view. Observe a "Source Notification" tuple on the SubscribeStatus stream indicating the LBM publish adapter is ready to publish to the default topic, my.default.topic.

  4. In the Manual Input view, click Send Data. Two additional tuples appear in the Application Output view from the SubscribeStatus and MessagesReceived streams indicating:

    • The transport session for the default topic has begun.

    • An LBM message from the default topic was received.

  5. When done, press F9 or click the Stop Running Application button.

Running This Sample in Terminal Windows

This section describes how to run the sample in UNIX terminal windows or Windows command prompt windows. On Windows, be sure to use the StreamBase Command Prompt from the Start menu as described in the Test/Debug Guide, not the default command prompt.

  1. Open three terminal windows on UNIX, or three StreamBase Command Prompts on Windows. In each window, navigate to your workspace copy of the sample, as described above.

  2. In window 1, type:

    sbd 29west-lbm.sbapp

  3. In window 2, type:

    sbc dequeue -v

    This window will display the tuples dequeued from the application's output ports.

  4. In window 3, start the simulated NYSE feed:

    echo 1.23 | sbc enqueue PublishInSimple

  5. Observe in windows 2 that tuples appear from the SubscribeStatus and MessagesReceived streams.

  6. In window 3, type the following command to terminate the server and dequeuer:

    sbadmin shutdown