Added code for https://jstobigdata.com/spring/profiles-in-spring-to-register-beans-conditionally/

Author: Bikraji

spring-core-environment-abstraction/pom.xml

@@ -21,6 +21,24 @@
       <groupId>org.springframework</groupId>
       <artifactId>spring-context</artifactId>
     </dependency>
+
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.junit.platform</groupId>
+      <artifactId>junit-platform-runner</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-test</artifactId>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <dependencyManagement>

spring-core-environment-abstraction/src/main/java/com/jsbd/profiles/DataSource.java

@@ -0,0 +1,5 @@
+package com.jsbd.profiles;
+
+public interface DataSource {
+  public String getName();
+}

spring-core-environment-abstraction/src/main/java/com/jsbd/profiles/GraphQlDataSource.java

@@ -0,0 +1,13 @@
+package com.jsbd.profiles;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+@Component
+@Profile("graphQl")
+public class GraphQlDataSource implements DataSource {
+  @Override
+  public String getName() {
+    return "GraphQlDataSource";
+  }
+}

spring-core-environment-abstraction/src/main/java/com/jsbd/profiles/ProfilesApp.java

@@ -0,0 +1,15 @@
+package com.jsbd.profiles;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+public class ProfilesApp {
+  public static void main(String[] args) {
+    AnnotationConfigApplicationContext context
+        = new AnnotationConfigApplicationContext();
+    context.getEnvironment().setActiveProfiles("graphQl");
+    context.register(ProfilesConfig.class);
+    context.refresh();
+    DataSource  dataSource = context.getBean(DataSource.class);
+    System.out.println(dataSource.getClass());
+  }
+}

spring-core-environment-abstraction/src/main/java/com/jsbd/profiles/ProfilesConfig.java

@@ -0,0 +1,9 @@
+package com.jsbd.profiles;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.jsbd.profiles")
+public class ProfilesConfig {
+}

spring-core-environment-abstraction/src/main/java/com/jsbd/profiles/RestDataSource.java

@@ -0,0 +1,15 @@
+package com.jsbd.profiles;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+@Component
+@Profile({"rest", "default"})
+public class RestDataSource implements DataSource {
+
+  //Logic to fetch data from API
+  @Override
+  public String getName() {
+    return "RestDataSource";
+  }
+}

spring-core-environment-abstraction/src/test/java/com/jsbd/profiles/TestDefaultProfile.java

@@ -0,0 +1,18 @@
+package com.jsbd.profiles;
+
+import org.junit.Assert;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+@SpringJUnitConfig(ProfilesConfig.class)
+public class TestDefaultProfile {
+  @Autowired
+  private DataSource dataSource;
+
+  @Test
+  public void testDefaultProfile() {
+    Assert.assertNotNull(dataSource);
+    Assert.assertEquals(dataSource.getClass(), RestDataSource.class);
+  }
+}

spring-core-environment-abstraction/src/test/java/com/jsbd/profiles/TestGraphQlProfile.java

@@ -0,0 +1,22 @@
+package com.jsbd.profiles;
+
+import org.junit.Assert;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+@SpringJUnitConfig(ProfilesConfig.class)
+@ActiveProfiles("graphQl")
+public class TestGraphQlProfile {
+
+  @Autowired
+  private DataSource dataSource;
+
+  @Test
+  public void testGraphQlProfile() {
+    System.out.println(dataSource);
+    Assert.assertNotNull(dataSource);
+    Assert.assertEquals(dataSource.getClass(), GraphQlDataSource.class);
+  }
+}

spring-core-environment-abstraction/src/test/java/com/jsbd/profiles/TestRestProfile.java

@@ -0,0 +1,22 @@
+package com.jsbd.profiles;
+
+import org.junit.Assert;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+@SpringJUnitConfig(ProfilesConfig.class)
+@ActiveProfiles("rest")
+public class TestRestProfile {
+
+  @Autowired
+  private DataSource dataSource;
+
+  @Test
+  public void testDataSource(){
+    Assert.assertNotNull(dataSource);
+    Assert.assertEquals(dataSource.getClass(), RestDataSource.class);
+    System.out.println(dataSource.getClass());
+  }
+}