| /* |
| * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0, which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the |
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, |
| * version 2 with the GNU Classpath Exception, which is available at |
| * https://www.gnu.org/software/classpath/license.html. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 |
| */ |
| |
| package com.sun.enterprise.resource.pool; |
| |
| import com.sun.appserv.connectors.internal.api.PoolingException; |
| import com.sun.enterprise.resource.ResourceHandle; |
| import com.sun.enterprise.resource.ResourceSpec; |
| import com.sun.enterprise.resource.ResourceState; |
| import com.sun.enterprise.resource.allocator.ResourceAllocator; |
| import org.glassfish.resourcebase.resources.api.PoolInfo; |
| |
| import jakarta.transaction.Transaction; |
| import java.util.Hashtable; |
| |
| /** |
| * This resource pool is created when connection pooling is switched off |
| * Hence no pooling happens in this resource pool |
| * |
| * @author Kshitiz Saxena |
| * @since 9.1 |
| */ |
| public class UnpooledResource extends ConnectionPool{ |
| |
| private int poolSize; |
| |
| /** Creates a new instance of UnpooledResourcePool */ |
| public UnpooledResource(PoolInfo poolInfo, Hashtable env) throws PoolingException { |
| super(poolInfo, env); |
| |
| //No pool is being maintained, hence no pool cleanup is needed |
| //in case of failure |
| failAllConnections = false; |
| } |
| |
| @Override |
| protected synchronized void initPool(ResourceAllocator allocator) |
| throws PoolingException{ |
| |
| if (poolInitialized) { |
| return; |
| } |
| |
| //nothing needs to be done as pooling is disabled |
| poolSize = 0; |
| |
| poolInitialized = true; |
| } |
| |
| @Override |
| protected ResourceHandle prefetch(ResourceSpec spec, ResourceAllocator alloc, |
| Transaction tran) { |
| return null; |
| } |
| |
| @Override |
| protected void reconfigureSteadyPoolSize(int oldSteadyPoolSize, |
| int newSteadyPoolSize) throws PoolingException { |
| //No-op as the steady pool size should not be reconfigured when connection |
| //pooling is switched off |
| } |
| |
| @Override |
| protected ResourceHandle getUnenlistedResource(ResourceSpec spec, ResourceAllocator alloc, |
| Transaction tran) throws PoolingException { |
| ResourceHandle handle = null; |
| |
| if(incrementPoolSize()){ |
| try{ |
| handle = createSingleResource(alloc); |
| }catch (PoolingException ex){ |
| decrementPoolSize(); |
| throw ex; |
| } |
| ResourceState state = new ResourceState(); |
| handle.setResourceState(state); |
| state.setEnlisted(false); |
| setResourceStateToBusy(handle); |
| return handle; |
| } |
| String msg = localStrings.getStringWithDefault( |
| "poolmgr.max.pool.size.reached", |
| "In-use connections equal max-pool-size therefore cannot allocate any more connections."); |
| throw new PoolingException(msg); |
| } |
| |
| @Override |
| public void resourceErrorOccurred(ResourceHandle resourceHandle) throws IllegalStateException { |
| freeResource(resourceHandle); |
| } |
| |
| @Override |
| protected void freeResource(ResourceHandle resourceHandle){ |
| decrementPoolSize(); |
| deleteResource(resourceHandle); |
| } |
| |
| private synchronized boolean incrementPoolSize(){ |
| if(poolSize >= maxPoolSize){ |
| _logger.info("Fail as poolSize : " + poolSize); |
| return false; |
| } |
| poolSize++; |
| return true; |
| } |
| |
| private synchronized void decrementPoolSize(){ |
| poolSize--; |
| } |
| } |