Contents
The TIBCO StreamBase® Bi-Directional JSON Socket Reader and Writer adapters receive and send data over a socket connection in the JSON format. The sample shows how adapter pairs work together when linked. The adapter wraps the functionality of the JSONDataTransformer, which converts tuples into escaped JSON strings and delimits tuples with a separator character, before sending the data over a socket.
The server section and client section both have a set of linked adapters to input and output on the same socket. The client
and server continually exchange messages. At each exchange, the client increments an integer value (testint, initialized in the Defaults Map operator) until a finishing value is reached. When you run this sample, you can see values
for the ReadDataClient and ReadDataServer incrementing and alternating.
In StreamBase Studio, import this sample with the following steps:
-
From the top menu, select → .
-
Type
bidto narrow the list of options. -
Select Bi-Directional JSON Socket input/output adapter from the StreamBase Standard Adapters category.
-
Click .
StreamBase Studio creates a single project containing the sample files.
-
In the Project Explorer, open the sample you just loaded.
-
Open the
src/main/eventflowfolder. -
Open the package folder (most samples contain a single package folder. Open the top-level package folder if your sample contains more than one folder).
-
Open the
JSONHttp.sbappapplication file and click the
Run button. This opens the SB Test/Debug perspective and starts the application.
If you see red marks, wait a moment for the project in Studio to load its features.
If red marks do not resolve themselves in a moment, select the project and right-click → from the context menu.
-
For the example, in the Manual Input view select the
ControlClientStream, then enterCONNECTinto the command field, then click . -
In the Output Streams view, observe tuples emitted on the
Dataoutput stream. -
Select any tuple emitted from either stream and inspect tuple data fields in the Variables view below the output streams to analyze and understand their structure.
-
When done, press F9 or click the
Stop Running Application button.
-
In the Project Explorer, open the sample you just loaded.
-
Open the
src/main/eventflowfolder. -
Open the package folder (most samples contain a single package folder. Open the top-level package folder if your sample contains more than one folder).
-
Open the
JSONBiDirectionalSocket.sbappapplication file and click the Run button. This opens the SB Test/Debug perspective and starts the application.
If you see red marks, wait a moment for the project in Studio to load its features.
If red marks do not resolve themselves in a moment, select the project and right-click → from the context menu.
-
For the example, in the Manual Input view select the
ControlClientStream, then enterCONNECTinto the command field, then click . -
In the Output Streams view, observe tuples emitted on the
ReadDataServerandReadDataClientoutput streams. -
Select any tuple emitted from either stream and inspect tuple data fields in the Variables view below the output streams to analyze and understand their structure.
-
When done, press F9 or click the
Stop Running Application button.
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 permission problems. The default workspace location for this sample is:
studio-workspace/sample_adapter_embedded_bi-directional-json-socketSee Default Installation Directories for the default location of studio-workspace on your system.