Set Up the JSONPROV Enterprise Server Region

Start the Server Explorer

Create an enterprise server region

Here you use Enterprise Server to create an enterprise server region on which to run the Web service.

1. On the Server Explorer, right-click Local [localhost:10086]; then select New > Enterprise Server.
2. In the Name field, type JSONPROV. This is the name for the new enterprise server region.
3. Click the Browse button that corresponds to the Template field, and navigate to the CICSWebServicesTemplate.xml file located in the ReverseJSON project folder.
4. Double-click CICSWebServicesTemplate.xml. This populates the Template field.
5. On the list next to Associate with projects, check ReverseJSON.
6. Click Finish.

   The Server Explorer should now show the JSONPROV enterprise server region listed under Local [localhost:10086].

   Note: If JSONPROV is not showing, expand Local [localhost:10086].

Configure JSONPROV resources

All enterprise server regions require access to certain resources, depending on the types of applications they run. Resources that are defined on a region's startup list are loaded during the startup routine, making them available for as long as the region is running.

JSON CICS Web services use the underlying resources provided by the standard Enterprise Server CICS Web interface (CWI) and CICS Web Services (CWS) support. However, the resource definition file supplied with the project does not include these resources; therefore, you need to add them manually. The CWI resources reside in a predefined resource group named DFHWEB. The CWS resources are in the predefined DFHPIPE group.

In addition, you need to create and define a resource group, JSONPROV, to contain the resources required by the REVERSEJ program.

Start the JSONPROV enterprise server region

• In the Server Explorer, right-click JSONPROV; then select Start.

Start Enterprise Server Common Web Administration (ESCWA)

• On the Server Explorer, right-click Default [127.0.0.1:86] and then click Open Administration Page.

  ESCWA starts in your default browser.

Access the CICS resource settings for the server

1. After JSONPROV has started, select it from the default Directory Servers list in ESCWA.
2. At the top of the right pane, click CICS > Resources.

Update the DFHWEB group

The DFHWEB resource group is available to your enterprise server region, but requires one update.

1. On the Resources page, click the Groups node.
2. In the right pane, hover over the the DFHWEB resource group, and click Edit .
3. On the list of resources, hover over SNFT, and click Edit

Create the JSONPROV resource group

1. On the Resources page, click the Groups node.
2. Click New in the Groups pane.
3. In the Name field, type JSONPROV.
4. In the Description field, type CICS Web Services Provider Resources; then click Save. This invokes the JSONPROV page where you can create and define resources for the group.

Define JSONPROV resources

The REVERSEJ program requires a resource for TCP/IP service, and a resource to support a pipeline.

1. On the JSONPROV page, click New and then click TCPIPSv from the drop-down list.
2. Complete these fields:

   Name	JSNTCPIP
   Description	My TCP/IP Service
   Port	5482

3. Click Save.
4. Click Back to return to the JSONPROV page.
5. On the JSONPROV page, click New and then click Pipeline from the list.
   Important: If the Pipeline button is not present, check to be sure that you have properly installed the CCSID tables specified in the Tutorials: CICS Web Services topic.
6. Complete these fields:

   Name	JSONPIPE
   Description	My CICS JSON Provider Pipeline
   Response Wait Time	Check System Default	This is the number of seconds that an application waits for a response from the service. The default value is 10 seconds for HTTP and 60 seconds for MQ.
   Config file	$IDE_XML_LOC/JSONConfig.xml	The IDE_XML_LOC environment variable in JSONPROV points to the xml project folder.1
   Web Directory	$IDE_LOADLIB/	The IDE_LOADLIB environment variable points to the loadlib project folder, which contains the WSBIND file.2
   1 To see a list of environment variables defined for JSONPROV, from the list of Directory Servers, click the (Edit) button that corresponds to the JSONPROV region. Click the downward arrow next to Monitor at the top of the page, then click Environment Variables. 2The IDE_LOADLIB environment variable is set automatically when you start the enterprise server region from the Server Explorer in Eclipse.

7. Click Save.
8. Click Back to return to the JSONPROV page.

Open the DEMOSTRT startup list

1. Expand Startup Lists to see the list of CICS startup lists.

   The JSONPROV region uses the default startup list, named DEMOSTRT.

2. Click DEMOSTRT.

   This opens the DEMOSTRT page in the right pane.

Add resource groups to the startup list

CICS Web Services are built on top of the CICS Web Interface (CWI) support, so you need to ensure that all CWS and CWI resources are available. These reside in the DFHPIPE and DFHWEB resource groups respectively, which are already defined, but not included in the startup list. In addition, you need to add the new JSONPROV resource group.

1. On the DEMOSTRT page under Groups, click Add.
2. On the Available Groups list, check the DFHPIPE, DFHWEB, and JSONPROV groups.
3. Click Select.

   This adds the all groups to the end of the list.

4. Cllick Apply.

Install resources

You can install new and changed resources by stopping and starting the region.

• From the Server Explorer in Eclipse, right-click JSONPROV; then select Restart. This stops and then starts the JSONPROV enterprise server region, automatically installing and loading the newly added resources on the startup list.

Verify Resources

After JSONPROV is started, you can verify that the resources you have defined are installed and active.

1. From the ESCWA UI, click the JSONPROV server in default list.
2. From the CICS drop-down list in the right pane, select Resources.
3. Set the first field to the right of RESOURCES to Active.
4. On the resulting list of active resources, click WebSvc. You should see the REVERSEJ Web service listed and marked as INSERVICE.
5. On the list, click Pipeline > JSONPIPE. You should see that the JSONPIPE pipeline is enabled.
6. On the list, click URIMap > £map-ref, where map-ref is an alphanumeric string generated by Enterprise Server. You should see the path specified as /cics/services/json/reverse.

   Enterprise Server generates URIMAPs to provide CICS with the information it needs to process requests. The name of each generated URIMAP begins with a pounds sterling symbol (£).

   To run your provider CICS Web service, you send a JSON request to an endpoint URL that routes the request to your enterprise server region. The endpoint URL contains a URI value. The incoming request reads the installed URIMAPs to identify the map whose Path value matches the URI value of the endpoint URL. When the correct URIMAP is identified, CICS uses the data defined in the URIMAP, such as the name of the Web Service and its associated Pipeline, to process the request.

7. Close ESCWA.