Creating a AEM configuration or OSGi Config

Create an OSGi configuration for Adobe Experience Manager(AEM), that could be use to manage different configuration values, based on the runmode.

1. Create a Configuration class, ObjectClassDefinition.
   

   package com.adobe.aem.guides.wknd.core.config;
   
   import org.osgi.service.metatype.annotations.AttributeDefinition;
   import org.osgi.service.metatype.annotations.ObjectClassDefinition;
   
   @ObjectClassDefinition(
       name = "Cognito Forms API Configuration",
       description = "Configuration for the Cognito Forms API integration"
   )
   public @interface CognitoFormsApiConfiguration {
   
       @AttributeDefinition(
           name = "Endpoint",
           description = "Base endpoint URL for Cognito Forms API"
       )
       String endpoint() default "https://api.cognitoforms.com";
   
       @AttributeDefinition(
           name = "Client ID",
           description = "Client ID for the Cognito Forms API"
       )
       String clientId();
   
       @AttributeDefinition(
           name = "Client Secret",
           description = "Client Secret for the Cognito Forms API"
       )
       String clientSecret();
   }
   

2. Now, create an interface with getter methods.
   
   

   package com.adobe.aem.guides.wknd.core.services;
   
   public interface CognitoFormsApiService {
       String getEndpoint();
       String getClientId();
       String getClientSecret();
   }
   

3. Finally, create a class and implement the interface which we created in step 2.
   

   package com.adobe.aem.guides.wknd.core.services.impl;
   
   import org.osgi.service.component.annotations.Activate;
   import org.osgi.service.component.annotations.Component;
   import org.osgi.service.component.annotations.Modified;
   import org.osgi.service.metatype.annotations.Designate;
   
   import com.adobe.aem.guides.wknd.core.config.CognitoFormsApiConfiguration;
   import com.adobe.aem.guides.wknd.core.services.CognitoFormsApiService;
   
   @Component(immediate = true, service = CognitoFormsApiService.class)
   @Designate(ocd = CognitoFormsApiConfiguration.class)
   public class CognitoFormsApiServiceImpl implements CognitoFormsApiService {
   
       private volatile String endpoint;
       private volatile String clientId;
       private volatile String clientSecret;
   
       @Activate
       @Modified
       protected void activate(CognitoFormsApiConfiguration config) {
           this.endpoint = config.endpoint();
           this.clientId = config.clientId();
           this.clientSecret = config.clientSecret();
       }
   
       @Override
       public String getEndpoint() {
           return endpoint;
       }
   
       @Override
       public String getClientId() {
           return clientId;
       }
   
       @Override
       public String getClientSecret() {
           return clientSecret;
       }
   }