Added code sample for centralized config

java/jdbc-centralized-config/.gitignore

@@ -0,0 +1,38 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

java/jdbc-centralized-config/example/connect.json

@@ -0,0 +1,29 @@
+{
+ "example": {
+ "connect_descriptor": "<connect_descriptor>",
+ "user": "admin",
+ "password": {
+ "type": "ocivault",
+ "value": "ocid1.vaultsecret.oc1.phx.<ocivaultocid>"
+ },
+ "jdbc": {
+ "oracle.jdbc.ReadTimeout": 1000,
+ "defaultRowPrefetch": 20,
+ "autoCommit": "false"
+ }
+ },
+
+ "test": {
+ "connect_descriptor": "<connect_descriptor>",
+ "user": "testuser",
+ "password": {
+ "type": "ocivault",
+ "value": "ocid1.vaultsecret.oc1.phx.<ocivaultocid>"
+ },
+ "jdbc": {
+ "oracle.jdbc.ReadTimeout": 1000,
+ "defaultRowPrefetch": 20,
+ "autoCommit": "false"
+ }
+ }
+}

java/jdbc-centralized-config/pom.xml

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>org.oracle</groupId>
+ <artifactId>jdbc-centralized-config</artifactId>
+ <version>1.0-SNAPSHOT</version>
+
+ <properties>
+ <maven.compiler.source>17</maven.compiler.source>
+ <maven.compiler.target>17</maven.compiler.target>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ <slf4j.version>2.0.13.</slf4j.version>
+ </properties>
+
+ <dependencies>
+ <dependency>
+ <groupId>com.oracle.database.jdbc</groupId>
+ <artifactId>ojdbc11</artifactId>
+ <version>23.4.0.24.05</version>
+ </dependency>
+ <dependency>
+ <groupId>com.oracle.database.jdbc</groupId>
+ <artifactId>ucp11</artifactId>
+ <version>23.4.0.24.05</version>
+ </dependency>
+ <dependency>
+ <groupId>com.oracle.database.security</groupId>
+ <artifactId>oraclepki</artifactId>
+ <version>23.4.0.24.05</version>
+ </dependency>
+ <!-- For centralized config with OCI -->
+ <dependency>
+ <groupId>com.oracle.database.jdbc</groupId>
+ <artifactId>ojdbc-provider-oci</artifactId>
+ <version>1.0.1</version>
+ </dependency>
+ <!-- For centralized config with Azure -->
+ <dependency>
+ <groupId>com.oracle.database.jdbc</groupId>
+ <artifactId>ojdbc-provider-azure</artifactId>
+ <version>1.0.1</version>
+ </dependency>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-api</artifactId>
+ <version>1.7.36</version>
+ </dependency>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-simple</artifactId>
+ <version>1.7.36</version>
+ </dependency>
+
+ </dependencies>
+</project>

java/jdbc-centralized-config/src/main/java/Main.java

@@ -0,0 +1,47 @@
+import database.DatabaseConfig;
+import database.DatabasePoolConfig;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+public class Main {
+
+ static DatabaseConfig dbConfig;
+
+ static class Provider {
+ static final String OCI_OBJECT_STORE_CONFIG = "jdbc:oracle:thin:@config-ociobject://<url-path>";
+ static final String BUILT_IN_FILE_CONFIG = "jdbc:oracle:thin:@config-file://<path-to-json-file>";
+ static final String AZURE_APP_CONFIG = "jdbc:oracle:thin:@config-azure://<appconfig-name>";
+ static final String OCI_VAULT_CONFIG = "jdbc:oracle:thin:@config-ocivault://<vault-secret-ocid>";
+ static final String NORMAL_CONFIG = "jdbc:oracle:thin:@<connect-string>";
+ }
+
+ public static void main(String[] args) {
+ System.setProperty("ORACLE_URL", Provider.BUILT_IN_FILE_CONFIG);
+ dbConfig = DatabaseConfig.get();
+ runConnectionTest();
+
+ }
+
+ // Test method
+ private static void runConnectionTest() {
+
+
+
+ boolean success = false;
+ try (Connection c = dbConfig.getConnection();
+ PreparedStatement stmt = c.prepareStatement("select 'true' from dual");
+ ResultSet rs = stmt.executeQuery()){
+
+ // Boolean Datatype is a 23ai feature
+ if (rs.next()) success = rs.getBoolean(1);
+
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+
+ System.out.println("Success: " + success);
+ }
+}

java/jdbc-centralized-config/src/main/java/database/DatabaseConfig.java

@@ -0,0 +1,45 @@
+package database;
+
+
+import oracle.jdbc.pool.OracleDataSource;
+import oracle.ucp.jdbc.PoolDataSource;
+import oracle.ucp.jdbc.PoolDataSourceFactory;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+
+
+public class DatabaseConfig {
+
+ final OracleDataSource ods;
+
+ private static DatabaseConfig config;
+
+ DatabaseConfig() {
+
+ try {
+ ods = new OracleDataSource();
+ } catch (SQLException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public static synchronized DatabaseConfig get() {
+ if (config == null ) {
+ String URL = System.getProperty("ORACLE_URL");
+ config = new DatabaseConfig()
+ .configure(URL);
+ }
+ return config;
+ }
+
+ private DatabaseConfig configure(String URL) {
+ ods.setURL(URL);
+ return this;
+ }
+
+ public Connection getConnection() throws SQLException {
+ return ods.getConnection();
+ }
+
+}

java/jdbc-centralized-config/src/main/java/database/DatabasePoolConfig.java

@@ -0,0 +1,50 @@
+package database;
+
+
+import oracle.ucp.jdbc.PoolDataSource;
+import oracle.ucp.jdbc.PoolDataSourceFactory;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+
+
+public class DatabasePoolConfig {
+
+ final String factoryClassName = "oracle.jdbc.pool.OracleDataSource";
+ final String poolDataSourceName = "JDBC_UCP_POOL";
+ final PoolDataSource pool;
+
+ private static DatabasePoolConfig config;
+
+ DatabasePoolConfig() {
+ pool = PoolDataSourceFactory.getPoolDataSource();
+ }
+
+ public static synchronized DatabasePoolConfig get() {
+ if (config == null ) {
+ String URL = System.getProperty("ORACLE_URL");
+ config = new DatabasePoolConfig()
+ .configure(URL);
+ }
+ return config;
+ }
+
+ private DatabasePoolConfig configure(String URL) {
+ System.out.println("Configuring with " + URL);
+ try {
+ pool.setURL(URL);
+ pool.setConnectionPoolName(poolDataSourceName);
+ pool.setConnectionFactoryClassName(factoryClassName);
+ pool.setInitialPoolSize(100);
+ } catch (SQLException e) {
+ System.out.println("Error setting up oracle.jdbc.pool.OracleDataSource");
+ throw new RuntimeException(e);
+ }
+ return this;
+ }
+
+ public Connection getConnection() throws SQLException {
+ return pool.getConnection();
+ }
+
+}

java/jdbc-centralized-config/src/main/resources/simplelogger.properties

@@ -0,0 +1 @@
+org.slf4j.simpleLogger.defaultLogLevel=error