Add sample for reusable repository extensions.

Closes #690

mongodb/util/src/main/java/example/springdata/mongodb/util/AtlasContainer.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2024 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 example.springdata.mongodb.util;
+
+import java.util.List;
+
+import org.springframework.util.StringUtils;
+import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.utility.DockerImageName;
+
+/**
+ * @author Christoph Strobl
+ */
+public class AtlasContainer extends GenericContainer<AtlasContainer> {
+
+    private static final DockerImageName DEFAULT_IMAGE_NAME = DockerImageName.parse("mongodb/mongodb-atlas-local");
+    private static final String DEFAULT_TAG = "latest";
+    private static final String MONGODB_DATABASE_NAME_DEFAULT = "test";
+
+    public AtlasContainer() {
+        this(DEFAULT_IMAGE_NAME.withTag(DEFAULT_TAG));
+    }
+
+    public AtlasContainer(String dockerImageName) {
+        this(DockerImageName.parse(dockerImageName));
+    }
+
+    public AtlasContainer(DockerImageName dockerImageName) {
+        super(dockerImageName);
+        dockerImageName.assertCompatibleWith(DEFAULT_IMAGE_NAME);
+        setExposedPorts(List.of(27017));
+    }
+
+    public String getConnectionString() {
+        return getConnectionString(MONGODB_DATABASE_NAME_DEFAULT);
+    }
+
+    /**
+     * Gets a connection string url.
+     *
+     * @return a connection url pointing to a mongodb instance
+     */
+    public String getConnectionString(String database) {
+        return String.format("mongodb://%s:%d/%s?directConnection=true", getHost(), getMappedPort(27017), StringUtils.hasText(database) ? database : MONGODB_DATABASE_NAME_DEFAULT);
+    }
+}

mongodb/util/src/main/java/example/springdata/mongodb/util/MongoContainers.java

@@ -22,14 +22,22 @@ import org.testcontainers.utility.DockerImageName;
  * Utility methods to create a {@link MongoDBContainer}.
  *
  * @author Mark Paluch
+ * @author Christoph Strobl
  */
 public class MongoContainers {
 
-	private static final String IMAGE_NAME = "mongo:8.0";
-	private static final String IMAGE_NAME_PROPERTY = "mongo.default.image.name";
+    private static final String IMAGE_NAME = "mongo:8.0";
+    private static final String IMAGE_NAME_PROPERTY = "mongo.default.image.name";
 
-	public static MongoDBContainer getDefaultContainer() {
-		return new MongoDBContainer(DockerImageName.parse(System.getProperty(IMAGE_NAME_PROPERTY, IMAGE_NAME)))
-				.withReuse(true);
-	}
+    private static final String ATLAS_IMAGE_NAME = "mongodb/mongodb-atlas-local:latest";
+    private static final String ATLAS_IMAGE_NAME_PROPERTY = "mongo.atlas.image.name";
+
+    public static MongoDBContainer getDefaultContainer() {
+        return new MongoDBContainer(DockerImageName.parse(System.getProperty(IMAGE_NAME_PROPERTY, IMAGE_NAME)))
+            .withReuse(true);
+    }
+
+    public static AtlasContainer getAtlasContainer() {
+        return new AtlasContainer(System.getProperty(ATLAS_IMAGE_NAME_PROPERTY, ATLAS_IMAGE_NAME)).withReuse(true);
+    }
 }