Test the Business Rules API from SAP API Business Hub

1. Log on to SAP API Business Hub

   

2. In the search bar, search for Business rules. From the search results, select the API package for SAP Business Rules Service.

   

3. Choose the Rule Execution API for Cloud Foundry tile of Version v2.

   

4. Choose Try out to execute the APIs.

   

To try out the APIs, you need to configure your trial environment on SAP API Business Hub. The communication between a REST client (SAP API Business Hub in this case) and the service is achieved via a service instance. You can use the service keys to generate credentials to communicate with a service instance. Since Business Rules APIs are based on OAuth 2.0 authentication, you need to configure the environment using the service key parameters or the client credentials.

1. Log on to SAP BTP Cockpit.

2. Choose Enter your trial account.

   

3. Choose the trial subaccount where you have the Workflow Management service subscription.

   

4. From the navigation menu, choose Instances and Subscriptions. Under Instances, choose the Credentials to open the service key of the wm_business-rules service instance.

   

5. From the service key, note the following parameters required for configuring the environment:

   • clientid
   • clientsecret
   • url

   

Configure the environment using the service key parameters or the client credentials determined in step 2.

1. Go to SAP API Business Hub and then choose Add New Environment.

   

2. In the Configure New Environment window, provide the following details:

   Under Basic Information section:

   Field Name	Value
   Display Name	Trial
   Runtimeurl	bpmruleruntime.cfapps.eu10.hana.ondemand.com

   

   Under Authentication section:

   Field Name	Value
   Client ID	clientid
   Client Secret	clientsecret
   Token URL	url

   Enter the token URL without https://. For example, if the token URL in the service key is https://<trial ID>.authentication.eu10.hana.ondemand.com, then enter <trial ID>.authentication.eu10.hana.ondemand.com.

   Then, choose Configure.

   

1. Fetch the ID of the DetermineEquipmentRuleservice rule service from Manage Rule Projects application. This is a required parameter in the body JSON payload of the API.

   In the Rule services tab, choose Settings icon.

   

   Select ID and choose OK.

   

   Copy the ID of the DetermineEquipmentRuleservice rule service.

   

2. In SAP API Business Hub, select Invoke a Rule Service API and then choose /v2/workingset-rule-services. Paste the rule service ID in place of <rule-service-ID> in the following JSON payload and copy it to the Body of the API:

   JSON Copy

       {
     "RuleServiceId": "<rule-service-ID>",
     "Vocabulary": [
       {
         "Employee": {
           "IsFullTimeEmployee": true,
           "countryofCompany": "USA",
           "jobTitle": "Engineer II",
            "company": "ACE_USA"
          }
       }
     ]
   }

   Then choose Run.

   

3. Observe the API response in the response body of the API. You can view the equipment assigned to the employee.

   

4. Similarly, fetch the ID of EquipmentApprovalRuleservice from Manage Rule Projects application like in Step 3.1.

5. Paste the rule service ID in place of <rule-service-ID> in the following JSON payload and copy it to the Body of the same API:

   JSON Copy

       {
     "RuleServiceId": "<rule-service-ID>",
     "Vocabulary": [
       {
         "Equipment": {
           "TotalAmount": 780
          }
       }
     ]
   }

6. Observe the API response in the response body of the API.

   

   You also try changing the rule logic or the JSON payload values to see different results.