Enable SSDG to be configured via spring-session.properties defined and resolvable in the application classpath.

Resolves gh-55.

spring-session-data-geode/src/main/java/org/springframework/session/data/gemfire/config/annotation/web/http/GemFireHttpSessionConfiguration.java

@@ -111,6 +111,7 @@ import org.springframework.util.StringUtils;
  * @see org.apache.geode.cache.client.ClientCache
  * @see org.apache.geode.cache.client.ClientRegionShortcut
  * @see org.apache.geode.cache.client.Pool
+ * @see org.apache.geode.cache.query.Index
  * @see org.apache.geode.pdx.PdxSerializer
  * @see org.springframework.beans.factory.config.BeanPostProcessor
  * @see org.springframework.context.annotation.Bean
@@ -118,7 +119,12 @@ import org.springframework.util.StringUtils;
  * @see org.springframework.context.annotation.DependsOn
  * @see org.springframework.context.annotation.Import
  * @see org.springframework.context.annotation.ImportAware
+ * @see org.springframework.context.annotation.Profile
  * @see org.springframework.core.annotation.AnnotationAttributes
+ * @see org.springframework.core.env.ConfigurableEnvironment
+ * @see org.springframework.core.env.Environment
+ * @see org.springframework.core.env.PropertiesPropertySource
+ * @see org.springframework.core.env.PropertySource
  * @see org.springframework.core.type.AnnotationMetadata
  * @see org.springframework.data.gemfire.CacheFactoryBean
  * @see org.springframework.data.gemfire.GemfireOperations
@@ -131,16 +137,22 @@ import org.springframework.util.StringUtils;
  * @see org.springframework.session.data.gemfire.GemFireOperationsSessionRepository
  * @see org.springframework.session.data.gemfire.config.annotation.web.http.AbstractGemFireHttpSessionConfiguration
  * @see org.springframework.session.data.gemfire.config.annotation.web.http.EnableGemFireHttpSession
- * @see org.springframework.session.data.gemfire.config.annotation.web.http.support.SessionCacheTypeAwareRegionFactoryBean
  * @see org.springframework.session.data.gemfire.config.annotation.web.http.support.SessionAttributesIndexFactoryBean
+ * @see org.springframework.session.data.gemfire.config.annotation.web.http.support.SessionCacheTypeAwareRegionFactoryBean
  * @see org.springframework.session.data.gemfire.config.annotation.web.http.support.SpringSessionGemFireConfigurer
  * @see org.springframework.session.data.gemfire.expiration.SessionExpirationPolicy
  * @see org.springframework.session.data.gemfire.expiration.config.SessionExpirationTimeoutAwareBeanPostProcessor
  * @see org.springframework.session.data.gemfire.expiration.support.SessionExpirationPolicyCustomExpiryAdapter
  * @see org.springframework.session.data.gemfire.serialization.SessionSerializer
+ * @see org.springframework.session.data.gemfire.serialization.data.provider.DataSerializableSessionSerializer
+ * @see org.springframework.session.data.gemfire.serialization.data.support.DataSerializerSessionSerializerAdapter
+ * @see org.springframework.session.data.gemfire.serialization.pdx.provider.PdxSerializableSessionSerializer
+ * @see org.springframework.session.data.gemfire.serialization.pdx.support.PdxSerializerSessionSerializerAdapter
  * @since 1.1.0
  */
 @Configuration
+@org.springframework.context.annotation.PropertySource(name = "SpringSessionProperties",
+	value = "classpath:${spring-session-properties-location:spring-session.properties}", ignoreResourceNotFound = true)
 @SuppressWarnings({ "rawtypes", "unused" })
 public class GemFireHttpSessionConfiguration extends AbstractGemFireHttpSessionConfiguration implements ImportAware {
 

spring-session-data-geode/src/test/java/org/springframework/session/data/gemfire/config/annotation/web/http/GemFireHttpSessionConfigurationWithSpringSessionPropertiesUnitTests.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.session.data.gemfire.config.annotation.web.http;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.apache.geode.cache.RegionShortcut;
+import org.apache.geode.cache.client.ClientRegionShortcut;
+import org.apache.geode.cache.client.Pool;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.data.gemfire.config.annotation.ClientCacheApplication;
+import org.springframework.data.gemfire.tests.mock.annotation.EnableGemFireMockObjects;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+
+/**
+ * Unit Tests testing the configuration of Spring Session for Apache Geode (SSDG)
+ * using {@literal spring-session.properties}.
+ *
+ * @author John Blum
+ * @see org.junit.Test
+ * @see org.mockito.Mockito
+ * @see org.springframework.context.annotation.Bean
+ * @see org.springframework.data.gemfire.config.annotation.ClientCacheApplication
+ * @see org.springframework.data.gemfire.tests.mock.annotation.EnableGemFireMockObjects
+ * @see org.springframework.test.context.ContextConfiguration
+ * @see org.springframework.test.context.junit4.SpringRunner
+ * @since 2.6.0
+ */
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = GemFireHttpSessionConfigurationWithSpringSessionPropertiesUnitTests.TestConfiguration.class)
+public class GemFireHttpSessionConfigurationWithSpringSessionPropertiesUnitTests {
+
+	@BeforeClass
+	public static void setSpringSessionPropertiesLocation() {
+		System.setProperty("spring-session-properties-location", "test-spring-session.properties");
+	}
+
+	@AfterClass
+	public static void clearSpringSessionPropertiesLocation() {
+		System.clearProperty("spring-session-properties-location");
+	}
+
+	@Autowired
+	private GemFireHttpSessionConfiguration sessionConfiguration;
+
+	@Before
+	public void setup() {
+		assertThat(this.sessionConfiguration).isNotNull();
+	}
+
+	@Test
+	public void springSessionConfigurationIsCorrect() {
+
+		assertThat(this.sessionConfiguration.getClientRegionShortcut()).isEqualTo(ClientRegionShortcut.CACHING_PROXY);
+		assertThat(this.sessionConfiguration.getIndexableSessionAttributes()).containsExactly("username", "userId");
+		assertThat(this.sessionConfiguration.getMaxInactiveIntervalInSeconds()).isEqualTo(300);
+		assertThat(this.sessionConfiguration.getPoolName()).isEqualTo("CarPool");
+		assertThat(this.sessionConfiguration.getServerRegionShortcut()).isEqualTo(RegionShortcut.REPLICATE);
+		assertThat(this.sessionConfiguration.getSessionExpirationPolicyBeanName().orElse(null)).isEqualTo("TestSessionExpirationPolicyBean");
+		assertThat(this.sessionConfiguration.getSessionRegionName()).isEqualTo("TestSessions");
+		assertThat(this.sessionConfiguration.getSessionSerializerBeanName()).isEqualTo(GemFireHttpSessionConfiguration.SESSION_DATA_SERIALIZER_BEAN_NAME);
+	}
+
+	@ClientCacheApplication
+	@EnableGemFireHttpSession
+	@EnableGemFireMockObjects
+	static class TestConfiguration {
+
+		@Bean("CarPool")
+		Pool mockPool() {
+			return mock(Pool.class);
+		}
+	}
+}

spring-session-data-geode/src/test/resources/test-spring-session.properties

@@ -0,0 +1,10 @@
+# Test spring-session.properties
+
+spring.session.data.gemfire.cache.client.pool.name=CarPool
+spring.session.data.gemfire.cache.client.region.shortcut=CACHING_PROXY
+spring.session.data.gemfire.cache.server.region.shortcut=REPLICATE
+spring.session.data.gemfire.session.attributes.indexed=username,userId
+spring.session.data.gemfire.session.expiration.bean-name=TestSessionExpirationPolicyBean
+spring.session.data.gemfire.session.expiration.max-inactive-interval-seconds=300
+spring.session.data.gemfire.session.region.name=TestSessions
+spring.session.data.gemfire.session.serializer.bean-name=SessionDataSerializer