OSGi compatibility (#270)

### Summary

RDS-1092

### Description

- Added dependencies
- Added bundle activator class
- Added headers for OSGi compatibility

### Additional Reviewers

<!-- Any additional reviewers -->

Author: alecc-bq

settings.gradle.kts

@@ -34,6 +34,7 @@ pluginManagement {
         fun String.v() = extra["$this.version"].toString()
         fun PluginDependenciesSpec.idv(id: String, key: String = id) = id(id) version key.v()
 
+        id("biz.aQute.bnd.builder") version "6.3.1"
         id("com.github.spotbugs") version "5.0.+"
         id("com.diffplug.spotless") version "6.11.+"
         id("com.github.vlsi.gradle-extensions") version "1.+"

wrapper/build.gradle.kts

@@ -18,6 +18,7 @@ plugins {
     checkstyle
     java
     jacoco
+    id("biz.aQute.bnd.builder")
     id("com.diffplug.spotless")
     id("com.github.spotbugs")
     id("com.github.vlsi.gradle-extensions")
@@ -30,6 +31,7 @@ dependencies {
     compileOnly("com.zaxxer:HikariCP:4.0.3") // Version 4.+ is compatible with Java 8
     compileOnly("software.amazon.awssdk:secretsmanager:2.17.285")
     compileOnly("com.fasterxml.jackson.core:jackson-databind:2.13.4")
+    compileOnly("org.osgi:org.osgi.core:4.3.0")
 
     testImplementation("org.junit.platform:junit-platform-commons:1.9.0")
     testImplementation("org.junit.platform:junit-platform-engine:1.9.0")
@@ -174,6 +176,24 @@ tasks.jar {
         into("META-INF/services/")
     }
 
+    bundle {
+        bnd(
+            """
+            -exportcontents: software.*
+            -removeheaders: Created-By
+            Bundle-Description: Amazon Web Services (AWS) Advanced JDBC Wrapper Driver
+            Bundle-DocURL: https://github.com/awslabs/aws-advanced-jdbc-wrapper
+            Bundle-Vendor: Amazon Web Services (AWS)
+            Import-Package: javax.sql, javax.transaction.xa, javax.naming, javax.security.sasl;resolution:=optional, *;resolution:=optional
+            Bundle-Activator: software.amazon.jdbc.osgi.WrapperBundleActivator
+            Bundle-SymbolicName: software.aws.rds
+            Bundle-Name: Amazon Web Services (AWS) Advanced JDBC Wrapper Driver
+            Bundle-Copyright: Copyright Amazon.com Inc. or affiliates.
+            Require-Capability: osgi.ee;filter:="(&(|(osgi.ee=J2SE)(osgi.ee=JavaSE))(version>=1.8))"
+            """
+        )
+    }
+
     doFirst {
         mkdir("${buildDir}/META-INF/services/")
         val driverFile = File("${buildDir}/META-INF/services/java.sql.Driver")

wrapper/src/main/java/software/amazon/jdbc/osgi/WrapperBundleActivator.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * 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
+ *
+ * http://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 software.amazon.jdbc.osgi;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+
+public class WrapperBundleActivator implements BundleActivator {
+
+  public void start(BundleContext context) throws Exception {
+    if (!software.amazon.jdbc.Driver.isRegistered()) {
+      software.amazon.jdbc.Driver.register();
+    }
+  }
+
+  public void stop(BundleContext context) throws Exception {
+    if (software.amazon.jdbc.Driver.isRegistered()) {
+      software.amazon.jdbc.Driver.deregister();
+    }
+  }
+}