| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.druid.metadata; |
| |
| import com.fasterxml.jackson.annotation.JsonTypeInfo; |
| import com.google.common.base.Predicate; |
| import com.google.common.base.Strings; |
| import org.apache.commons.dbcp2.BasicDataSource; |
| import org.apache.druid.java.util.common.RetryUtils; |
| import org.apache.druid.server.initialization.JdbcAccessSecurityConfig; |
| import org.apache.druid.utils.ConnectionUriUtils; |
| import org.skife.jdbi.v2.DBI; |
| import org.skife.jdbi.v2.exceptions.DBIException; |
| import org.skife.jdbi.v2.exceptions.UnableToExecuteStatementException; |
| import org.skife.jdbi.v2.exceptions.UnableToObtainConnectionException; |
| import org.skife.jdbi.v2.tweak.HandleCallback; |
| |
| import java.sql.SQLException; |
| import java.sql.SQLRecoverableException; |
| import java.sql.SQLTransientException; |
| import java.util.Set; |
| |
| @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type") |
| public abstract class SQLFirehoseDatabaseConnector |
| { |
| static final int MAX_RETRIES = 10; |
| |
| public <T> T retryWithHandle( |
| HandleCallback<T> callback, |
| Predicate<Throwable> myShouldRetry |
| ) |
| { |
| try { |
| return RetryUtils.retry(() -> getDBI().withHandle(callback), myShouldRetry, MAX_RETRIES); |
| } |
| catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public final boolean isTransientException(Throwable e) |
| { |
| return e != null && (e instanceof RetryTransactionException |
| || e instanceof SQLTransientException |
| || e instanceof SQLRecoverableException |
| || e instanceof UnableToObtainConnectionException |
| || e instanceof UnableToExecuteStatementException |
| || (e instanceof SQLException && isTransientException(e.getCause())) |
| || (e instanceof DBIException && isTransientException(e.getCause()))); |
| } |
| |
| protected BasicDataSource getDatasource( |
| MetadataStorageConnectorConfig connectorConfig, |
| JdbcAccessSecurityConfig securityConfig |
| ) |
| { |
| // We validate only the connection URL here as all properties will be read from only the URL except |
| // users and password. If we want to allow another way to specify user properties such as using |
| // MetadataStorageConnectorConfig.getDbcpProperties(), those properties should be validated as well. |
| validateConfigs(connectorConfig.getConnectURI(), securityConfig); |
| BasicDataSource dataSource = new BasicDataSourceExt(connectorConfig); |
| dataSource.setUsername(connectorConfig.getUser()); |
| dataSource.setPassword(connectorConfig.getPassword()); |
| String uri = connectorConfig.getConnectURI(); |
| dataSource.setUrl(uri); |
| dataSource.setTestOnBorrow(true); |
| dataSource.setValidationQuery(getValidationQuery()); |
| |
| return dataSource; |
| } |
| |
| private void validateConfigs(String urlString, JdbcAccessSecurityConfig securityConfig) |
| { |
| if (Strings.isNullOrEmpty(urlString)) { |
| throw new IllegalArgumentException("connectURI cannot be null or empty"); |
| } |
| if (!securityConfig.isEnforceAllowedProperties()) { |
| // You don't want to do anything with properties. |
| return; |
| } |
| final Set<String> propertyKeyFromConnectURL = findPropertyKeysFromConnectURL(urlString, securityConfig.isAllowUnknownJdbcUrlFormat()); |
| ConnectionUriUtils.throwIfPropertiesAreNotAllowed( |
| propertyKeyFromConnectURL, |
| securityConfig.getSystemPropertyPrefixes(), |
| securityConfig.getAllowedProperties() |
| ); |
| } |
| |
| public String getValidationQuery() |
| { |
| return "SELECT 1"; |
| } |
| |
| public abstract DBI getDBI(); |
| |
| /** |
| * Extract property keys from the given JDBC URL. |
| */ |
| public abstract Set<String> findPropertyKeysFromConnectURL(String connectUri, boolean allowUnknown); |
| } |