KOGITO-5921 Support For OracleDB Peristence

addons/common/persistence/jdbc/pom.xml

@@ -80,4 +80,4 @@
       </plugin>
     </plugins>
   </build>
-</project>
+</project>

addons/common/persistence/jdbc/src/main/java/org/kie/kogito/persistence/jdbc/FileLoader.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2021 Red Hat, Inc. and/or its affiliates.
+ *
+ * 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 org.kie.kogito.persistence.jdbc;
+
+import java.io.InputStream;
+import java.util.List;
+
+public class FileLoader {
+
+    static List<String> getQueryFromFile(final String dbType, final String scriptName) {
+        final String fileName = String.format("sql/%s_%s.sql", scriptName, dbType);
+        try (InputStream stream = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName)) {
+            if (stream == null) {
+                throw new IllegalStateException(String.format("Impossible to find %s", fileName);
+            }
+            byte[] buffer = new byte[stream.available()];
+            stream.read(buffer);
+            String[] statements = new String(buffer).split(";");
+            return Arrays.asList(statements);
+        } catch (Exception e) {
+            throw new RuntimeException(String.format("Error reading query script file %s", fileName), e);
+        }
+    }
+
+}

addons/common/persistence/jdbc/src/main/java/org/kie/kogito/persistence/jdbc/GenericRepository.java

@@ -0,0 +1,220 @@
+/*
+ * Copyright 2021 Red Hat, Inc. and/or its affiliates.
+ *
+ * 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 org.kie.kogito.persistence.jdbc;
+
+import java.sql.Connection;
+import java.sql.DatabaseMetaData;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.UUID;
+
+import javax.sql.DataSource;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.kie.kogito.persistence.jdbc.JDBCProcessInstances.PAYLOAD;
+import static org.kie.kogito.persistence.jdbc.JDBCProcessInstances.VERSION;
+
+public class GenericRepository extends Repository {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(GenericRepository.class);
+
+    private enum DatabaseType {
+        POSTGRES("PostgreSQL", "process_instances"),
+        ORACLE("Oracle", "PROCESS_INSTANCES");
+
+        private final String dbIdentifier;
+        private final String tableNamePattern;
+
+        DatabaseType(final String dbIdentifier, final String tableNamePattern) {
+            this.dbIdentifier = dbIdentifier;
+            this.tableNamePattern = tableNamePattern;
+        }
+
+        String getDbIdentifier() {
+            return this.dbIdentifier;
+        }
+
+        public static DatabaseType create(final String dbIdentifier) {
+            if (ORACLE.getDbIdentifier().equals(dbIdentifier)) {
+                return ORACLE;
+            } else if (POSTGRES.getDbIdentifier().equals(dbIdentifier)) {
+                return POSTGRES;
+            } else {
+                var msg = String.format("Unrecognized DB (%s), defaulting to postgres", dbIdentifier);
+                LOGGER.warn(msg);
+                return POSTGRES;
+            }
+        }
+    }
+
+    private DatabaseType getDataBaseType(Connection connection) throws SQLException {
+        final DatabaseMetaData metaData = connection.getMetaData();
+        final String dbProductName = metaData.getDatabaseProductName();
+        return DatabaseType.create(dbProductName);
+    }
+
+    @Override
+    boolean tableExists(DataSource dataSource) {
+        try (Connection connection = dataSource.getConnection()) {
+            DatabaseType databaseType = getDataBaseType(connection);
+            final DatabaseMetaData metaData = connection.getMetaData();
+            final String[] types = { "TABLE" };
+            ResultSet tables = metaData.getTables(null, null, databaseType.tableNamePattern, types);
+            while (tables.next()) {
+                LOGGER.debug("Found process_instance table");
+                return true;
+            }
+            return false;
+        } catch (SQLException e) {
+            var msg = "Failed to read table metadata";
+            throw new RuntimeException(msg);
+        }
+    }
+
+    @Override
+    void createTable(DataSource dataSource) {
+        try (Connection connection = dataSource.getConnection()) {
+            DatabaseType databaseType = getDataBaseType(connection);
+            final List<String> statements = FileLoader.getQueryFromFile(databaseType.dbIdentifier, "create_tables");
+            for (String s : statements) {
+                try (PreparedStatement prepareStatement = connection.prepareStatement(s.trim())) {
+                    prepareStatement.execute();
+                }
+            }
+            LOGGER.info("DDL successfully done for ProcessInstance");
+        } catch (SQLException e) {
+            var msg = "Error creating process_instances table, the database should be configured properly before starting the application";
+            throw new RuntimeException(msg);
+        }
+    }
+
+    @Override
+    void insertInternal(DataSource dataSource, String processId, UUID id, byte[] payload) {
+        try (Connection connection = dataSource.getConnection();
+                PreparedStatement statement = connection.prepareStatement(INSERT)) {
+            statement.setString(1, id.toString());
+            statement.setBytes(2, payload);
+            statement.setString(3, processId);
+            statement.setLong(4, 1L);
+            statement.executeUpdate();
+        } catch (Exception e) {
+            throw uncheckedException(e, "Error inserting process instance %s", id);
+        }
+    }
+
+    @Override
+    void updateInternal(DataSource dataSource, UUID id, byte[] payload) {
+        try (Connection connection = dataSource.getConnection();
+                PreparedStatement statement = connection.prepareStatement(UPDATE)) {
+            statement.setBytes(1, payload);
+            statement.setString(2, id.toString());
+            statement.executeUpdate();
+        } catch (Exception e) {
+            throw uncheckedException(e, "Error updating process instance %s", id);
+        }
+    }
+
+    @Override
+    boolean updateWithLock(DataSource dataSource, UUID id, byte[] payload, long version) {
+        try (Connection connection = dataSource.getConnection();
+                PreparedStatement statement = connection.prepareStatement(UPDATE_WITH_LOCK)) {
+            statement.setBytes(1, payload);
+            statement.setLong(2, version + 1);
+            statement.setString(3, id.toString());
+            statement.setLong(4, version);
+            int count = statement.executeUpdate();
+            return count == 1;
+        } catch (Exception e) {
+            throw uncheckedException(e, "Error updating with lock process instance %s", id);
+        }
+    }
+
+    @Override
+    boolean deleteInternal(DataSource dataSource, UUID id) {
+        try (Connection connection = dataSource.getConnection();
+                PreparedStatement statement = connection.prepareStatement(DELETE)) {
+            statement.setString(1, id.toString());
+            int count = statement.executeUpdate();
+            return count == 1;
+        } catch (Exception e) {
+            throw uncheckedException(e, "Error deleting process instance %s", id);
+        }
+    }
+
+    @Override
+    Map<String, Object> findByIdInternal(DataSource dataSource, UUID id) {
+        Map<String, Object> result = new HashMap<>();
+        try (Connection connection = dataSource.getConnection();
+                PreparedStatement statement = connection.prepareStatement(FIND_BY_ID)) {
+            statement.setString(1, id.toString());
+            try (ResultSet resultSet = statement.executeQuery()) {
+                if (resultSet.next()) {
+                    Optional<byte[]> b = Optional.ofNullable(resultSet.getBytes(PAYLOAD));
+                    if (b.isPresent()) {
+                        result.put(PAYLOAD, b.get());
+                    }
+                    result.put(VERSION, resultSet.getLong(VERSION));
+                    return result;
+                }
+            }
+        } catch (Exception e) {
+            throw uncheckedException(e, "Error finding process instance %s", id);
+        }
+        return result;
+    }
+
+    @Override
+    List<byte[]> findAllInternal(DataSource dataSource, String processId) {
+        List<byte[]> result = new ArrayList<>();
+        try (Connection connection = dataSource.getConnection();
+                PreparedStatement statement = connection.prepareStatement(FIND_ALL)) {
+            statement.setString(1, processId);
+            try (ResultSet resultSet = statement.executeQuery()) {
+                while (resultSet.next()) {
+                    result.add(resultSet.getBytes(PAYLOAD));
+                }
+            }
+            return result;
+        } catch (Exception e) {
+            throw uncheckedException(e, "Error finding all process instances, for processId %s", processId);
+        }
+    }
+
+    @Override
+    Long countInternal(DataSource dataSource, String processId) {
+        try (Connection connection = dataSource.getConnection();
+                PreparedStatement statement = connection.prepareStatement(COUNT)) {
+            statement.setString(1, processId);
+            try (ResultSet resultSet = statement.executeQuery()) {
+                if (resultSet.next()) {
+                    return resultSet.getLong("count");
+                }
+            }
+        } catch (Exception e) {
+            throw uncheckedException(e, "Error counting process instances, for processId %s", processId);
+        }
+        return 0l;
+    }
+
+}