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:86]; 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:86].

   Note: If JSONPROV is not showing, expand Local [localhost:86].

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 Enterprise Server Administration

• From the Server Explorer, right-click Local [localhost:86]; then select Open Administration Page. This starts Enterprise Server Administration.

  On the Home page, you should see the JSONPROV enterprise server region listed in the table of servers.

Start the JSONPROV enterprise server region

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

  As the region is starting, the Enterprise Server Administration Home page should show log information in the region's Status Log column. When the region is fully started, this is indicated in the region's Status column.

  Note: If this is the first time you have started the server, you see a sign-on dialog box. If Server is secured is checked, uncheck it; then click OK. Unchecking Server is secured prevents this dialog box from showing when you subsequently start the region. If Server is secured is not checked, simply click OK to clear the dialog box. Also, if prompted to disable password recovery, click No. If a Secure Storage prompt appears, click No.

Start ES Monitor and Control (ESMAC)

1. After JSONPROV has started, on the Administration Home page, click the Details button located in the Status column for the JSONPROV region.
2. On the Server > Control page, click ES Monitor & Control. This starts the ESMAC utility where you can edit the startup list.

Open the DEMOSTRT startup list

1. On the ESMAC menu, click the drop-down list located under Resources; then select by Group.
2. Click Startup. This invokes a list of CICS Startup Lists in the right pane.

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

3. Click the Details button that corresponds to DEMOSTRT. This takes you to the CICS STARTUP - DEMOSTRT page.

Add resource groups

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. Here you add these resource groups to the startup list.

In addition, you need to add a new resource group for the CICS provider resources named JSONPROV. At this point, the JSONPROV resource group is neither created nor defined. Those tasks are completed in the next few sections of this tutorial.

1. On the CICS STARTUP - DEMOSTRT page, scroll down to the end of the list and type DFHWEB into the empty field at the bottom; then click Apply. ESMAC adds the DFHWEB group, and adds another empty field at the end of the list.
2. In the new empty field, type DFHPIPE; then click Apply.
3. In the new empty field, type JSONPROV; then click Apply.

Create the JSONPROV resource group

1. On the ESMAC menu, click the Groups button located under Resources.
2. On the CICS Resource Groups page, click New.
3. In the Name field, type JSONPROV.
4. In the Description field, type CICS Web Services Provider Resources; then click Add. This invokes the CICS Group 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 CICS Group JSONPROV page, click TCPIPSv.
2. Complete these fields:

   Name	CWSTCPIP
   Description	My TCP/IP Service
   Port No	5482

3. Click Add. Enterprise Server returns Add successful.
4. Click Apply. Enterprise Server returns Update successful.
5. Click Group List to return to the CICS Group JSONPROV page.
6. Click Pipeline.
   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.
7. Complete these fields:

   Name	JSONPIPE
   Description	My CICS JSON Provider Pipeline
   Resp Wait	DEFT	This is the number of seconds that an application waits for a response from the service. DEFT indicates the default value, which 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
   WebSvc Dir	$IDE_LOADLIB\	The IDE_LOADLIB environment variable points to the loadlib project folder, which contains the WSBIND file.1
   1 To see a list of environment variables defined for JSONPROV, from the ESMAC menu, click Env.Vars..

8. Click Add. Enterprise Server returns Add successful.
9. Click Apply. Enterprise Server returns Update successful.
10. Click Home to return to the Administration Home page.

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

11. From the Server Explorer, 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 Enterprise Server Administration Home page, start ESMAC for the JSONPROV region, just as you did in the previous section.
2. On the ESMAC menu, select Active from the drop-down list located under Resources.
3. On the ESMAC menu, click the WebSvc button. You should see the ReverseJ Web service listed and marked as INSERVICE.
4. On the ESMAC menu, click Pipeline; then click the Details button that corresponds to JSONPIPE. The Pipeline resource sets the response wait period, identifies the JSON configuration file, and the Web Service directory.
5. On the ESMAC menu, click URIMap; then click the Details button that corresponds to PIPELINE and /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.

6. Close Enterprise Server Administration.