Contents
This sample uses the TIBCO StreamBase® SBD-to-SBD Input Adapter in a downstream application to read tuples from an upstream application.
-
In the Package Explorer, double-click to open the
downstream.sbappapplication. Make sure the application is the currently active tab in the EventFlow Editor. -
Click the
Run button. This opens the SB Test/Debug perspective and starts the application.
-
Open two terminal windows on UNIX, or two StreamBase Command Prompts on Windows. In each window, navigate to the directory where the sample is installed, or to your workspace copy of the sample, as described above.
-
In window 1, start the upstream application using the port number of the configured adapter. For example:
sbd -p 10001 upstream.sbapp
-
In window 2, enqueue a tuple to the input stream of the upstream application. For example:
sbc -p 10001 enqueue InputStream 123,abc
-
In the Application Output view, observe that the tuples enqueued to the upstream application are emitted by the downstream application.
-
In window 2, stop the enqueuer by typing Ctrl+C.
-
In window 2, stop the upstream application by typing:
sbadmin -p 10001 shutdown
-
When done, press F9 or click the
Stop Running Application button.
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.
-
Open four terminal windows on UNIX, or four StreamBase Command Prompts on Windows. In each window, navigate to the directory where the sample is installed, or to your workspace copy of the sample, as described above.
-
In window 1, type:
sbd downstream.sbapp
The window shows that the downstream application is listening on port 10000. It also shows that the initial attempt of the StreamBase to StreamBase adapter fails because the upstream application is not yet running.
-
In window 2, type:
sbc dequeue OutputStream
This window will display the tuples dequeued from the downstream application.
-
In window 3, type:
sbd -p 10001 upstream.sbapp
The window shows that the upstream application is listening on port 10001.
-
In window 4, type:
sbc -p 10001 enqueue InputStream 123,abc
The tuples enqueued to the upstream application in this window appear in window 2.
-
In window 4, type: Ctrl+Z (Windows) or Ctrl+D (UNIX) to exit the sbc session.
-
In window 4, type the following commands to terminate the servers and dequeuer:
sbadmin shutdown sbadmin -p 10001 shutdown
In StreamBase Studio, import this sample with the following steps:
-
From the top menu, click → .
-
Select this sample from the Embedded Adapters list.
-
Click OK.
StreamBase Studio creates a single project containing the sample files.
When you load the sample into StreamBase Studio, Studio copies the sample project's files to your Studio workspace, which is normally part of your home directory, with full access rights.
Important
Load this sample in StreamBase Studio, and thereafter use the Studio workspace copy of the sample to run and test it, even when running from the command prompt.
Using the workspace copy of the sample avoids the permission problems that can occur when trying to work with the initially installed location of the sample. The default workspace location for this sample is:
studio-workspace/sample_adapter_embedded_sbd2sbdinputSee Default Installation Directories for the location of studio-workspace on your system.
In the default TIBCO StreamBase installation, this sample's files are initially installed in:
streambase-install-dir/sample/adapter/embedded/sbd2sbdinputSee Default Installation Directories for the default location of studio-workspace on your system.