wvlet.airframe.jdbc.ConnectionPool.scala Maven / Gradle / Ivy
/*
* 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 wvlet.airframe.jdbc
import java.sql.{Connection, PreparedStatement, ResultSet}
import wvlet.airframe._
import wvlet.log.io.IOUtil.withResource
import wvlet.log.{Guard, LogSupport}
import scala.util.{Failure, Success, Try}
trait ConnectionPool extends LogSupport {
def config: DbConfig
def withConnection[U](body: Connection => U): U
def stop: Unit
def executeQuery[U](sql: String)(handler: ResultSet => U): U = {
withConnection { conn =>
withResource(conn.createStatement()) { stmt =>
debug(s"execute query: ${sql}")
withResource(stmt.executeQuery(sql)) { rs =>
handler(rs)
}
}
}
}
def executeUpdate(sql: String): Unit = {
// TODO Add update retry
withConnection { conn =>
withResource(conn.createStatement()) { stmt =>
debug(s"execute update: ${sql}")
stmt.executeUpdate(sql)
}
}
}
def queryWith[U](preparedStatement: String)(body: PreparedStatement => Unit)(handler: ResultSet => U): U = {
withConnection { conn =>
withResource(conn.prepareStatement(preparedStatement)) { stmt =>
body(stmt)
debug(s"execute query: ${preparedStatement}")
withResource(stmt.executeQuery) { rs =>
handler(rs)
}
}
}
}
def updateWith(preparedStatement: String)(body: PreparedStatement => Unit): Unit = {
withConnection { conn =>
withResource(conn.prepareStatement(preparedStatement)) { stmt =>
body(stmt)
stmt.executeUpdate()
}
}
}
}
trait ConnectionPoolFactoryService {
val connectionPoolFactory = bind[ConnectionPoolFactory]
.onShutdown(_.close)
}
trait ConnectionPoolFactory extends Guard with AutoCloseable with LogSupport {
private var createdPools = List.empty[ConnectionPool]
/**
* Use this method to add a precisely configured connection pool
* @param pool
* @return
*/
def addConnectionPool(pool: ConnectionPool): ConnectionPool = {
guard {
// Register the generated pool to the list
createdPools = pool :: createdPools
}
pool
}
/**
*
* @param config
* @param pgConfig
* @return
*/
def newConnectionPool(config: DbConfig, pgConfig: PostgreSQLConfig = PostgreSQLConfig()): ConnectionPool = {
val pool: ConnectionPool = config.`type` match {
case "postgresql" => new PostgreSQLConnectionPool(config, pgConfig)
case "sqlite" => new SQLiteConnectionPool(config)
case other =>
throw new IllegalArgumentException(s"Unsupported database type ${other}")
}
addConnectionPool(pool)
}
override def close: Unit = {
guard {
createdPools.foreach { x =>
Try(x.stop) match {
case Success(u) => // OK
case Failure(e) => warn(e)
}
}
createdPools = List.empty
}
}
}