отделили реализацию mongodb в отлдельный модуль

mirror-mongo/build.gradle

@@ -0,0 +1,7 @@
+apply plugin: 'java-library'
+
+dependencies {
+    implementation(project(':mirror-core'))
+
+    api("org.mongodb:mongodb-driver-sync:${mongoDriver}")
+}

mirror-mongo/src/main/java/ru/di9/mirror/mongo/entity/MongoArtifactEntity.java

@@ -0,0 +1,6 @@
+package ru.di9.mirror.mongo.entity;
+
+import ru.di9.mirror.core.entity.ArtifactEntity;
+
+public class MongoArtifactEntity extends ArtifactEntity {
+}

mirror-mongo/src/main/java/ru/di9/mirror/mongo/repository/MongoArtifactRepository.java

@@ -0,0 +1,29 @@
+package ru.di9.mirror.mongo.repository;
+
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.result.InsertOneResult;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.bson.Document;
+import org.bson.types.ObjectId;
+import ru.di9.mirror.core.entity.ArtifactEntity;
+import ru.di9.mirror.core.repository.ArtifactRepository;
+
+@Slf4j
+@RequiredArgsConstructor
+public class MongoArtifactRepository implements ArtifactRepository {
+    private final MongoCollection<Document> collection;
+
+    @Override
+    public ArtifactEntity save(ArtifactEntity artifactEntity) {
+        InsertOneResult insertOneResult = collection.insertOne(new Document()
+            .append("_id", new ObjectId())
+            .append("group", artifactEntity.getGroup())
+            .append("artifactId", artifactEntity.getArtifactId())
+            .append("version", artifactEntity.getVersion())
+            .append("is_snapshot", artifactEntity.isSnapshot()));
+
+        log.info("InsertedId: {}", insertOneResult.getInsertedId());
+        return artifactEntity;
+    }
+}