Categories:
Audio (13)
Biotech (29)
Bytecode (36)
Database (77)
Framework (7)
Game (7)
General (507)
Graphics (53)
I/O (35)
IDE (2)
JAR Tools (101)
JavaBeans (21)
JDBC (121)
JDK (426)
JSP (20)
Logging (108)
Mail (58)
Messaging (8)
Network (84)
PDF (97)
Report (7)
Scripting (84)
Security (32)
Server (121)
Servlet (26)
SOAP (24)
Testing (54)
Web (15)
XML (309)
Collections:
Other Resources:
Source Code for Connector/J 8.0.31 - User Impl
Where to get the Java source code for Connector/J 8.0 User Impl module?
✍: FYIcenter.com
Java source code files for Connector/J 8.0 User Impl module are:
⏎ com/mysql/cj/xdevapi/ClientImpl.java
/* * Copyright (c) 2018, 2021, Oracle and/or its affiliates. * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License, version 2.0, as published by the * Free Software Foundation. * * This program is also distributed with certain software (including but not * limited to OpenSSL) that is licensed under separate terms, as designated in a * particular file or component or in included license documentation. The * authors of MySQL hereby grant you an additional permission to link the * program and your derivative works with the separately licensed software that * they have included with MySQL. * * Without limiting anything contained in the foregoing, this file, which is * part of MySQL Connector/J, is also subject to the Universal FOSS Exception, * version 1.0, a copy of which can be found at * http://oss.oracle.com/licenses/universal-foss-exception. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, * for more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ package com.mysql.cj.xdevapi; import java.io.IOException; import java.lang.ref.WeakReference; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Objects; import java.util.Properties; import java.util.Set; import java.util.concurrent.BlockingQueue; import java.util.concurrent.LinkedBlockingQueue; import java.util.concurrent.TimeUnit; import java.util.stream.Collectors; import java.util.stream.Stream; import com.mysql.cj.Messages; import com.mysql.cj.conf.BooleanPropertyDefinition; import com.mysql.cj.conf.ConnectionUrl; import com.mysql.cj.conf.DefaultPropertySet; import com.mysql.cj.conf.HostInfo; import com.mysql.cj.conf.IntegerPropertyDefinition; import com.mysql.cj.conf.PropertySet; import com.mysql.cj.exceptions.CJCommunicationsException; import com.mysql.cj.exceptions.CJException; import com.mysql.cj.exceptions.ExceptionFactory; import com.mysql.cj.exceptions.WrongArgumentException; import com.mysql.cj.protocol.Protocol.ProtocolEventListener; import com.mysql.cj.protocol.x.XProtocol; import com.mysql.cj.protocol.x.XProtocolError; import com.mysql.cj.util.StringUtils; public class ClientImpl implements Client, ProtocolEventListener { boolean isClosed = false; private ConnectionUrl connUrl = null; private boolean poolingEnabled = true; private int maxSize = 25; int maxIdleTime = 0; private int queueTimeout = 0; private int demotedTimeout = 120_000; Map<HostInfo, Long> demotedHosts = null; BlockingQueue<PooledXProtocol> idleProtocols = null; Set<WeakReference<PooledXProtocol>> activeProtocols = null; Set<WeakReference<Session>> nonPooledSessions = null; SessionFactory sessionFactory = new SessionFactory(); public ClientImpl(String url, String clientPropsJson) { Properties clientProps = StringUtils.isNullOrEmpty(clientPropsJson) ? new Properties() : clientPropsFromJson(clientPropsJson); init(url, clientProps); } public ClientImpl(String url, Properties clientProps) { init(url, clientProps != null ? clientProps : new Properties()); } private Properties clientPropsFromJson(String clientPropsJson) { Properties props = new Properties(); DbDoc clientPropsDoc = JsonParser.parseDoc(clientPropsJson); JsonValue pooling = clientPropsDoc.remove("pooling"); if (pooling != null) { if (!DbDoc.class.isAssignableFrom(pooling.getClass())) { throw new XDevAPIError(String.format("Client option 'pooling' does not support value '%s'.", pooling.toFormattedString())); } DbDoc poolingDoc = ((DbDoc) pooling); JsonValue jsonVal; jsonVal = poolingDoc.remove("enabled"); if (jsonVal != null) { if (JsonLiteral.class.isAssignableFrom(jsonVal.getClass())) { JsonLiteral pe = (JsonLiteral) jsonVal; if (pe != JsonLiteral.FALSE && pe != JsonLiteral.TRUE) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_ENABLED.getKeyName(), jsonVal.toFormattedString())); } props.setProperty(ClientProperty.POOLING_ENABLED.getKeyName(), pe.value); } else if (JsonString.class.isAssignableFrom(jsonVal.getClass())) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_ENABLED.getKeyName(), ((JsonString) jsonVal).getString())); } else { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_ENABLED.getKeyName(), jsonVal.toFormattedString())); } } jsonVal = poolingDoc.remove("maxSize"); if (jsonVal != null) { if (JsonNumber.class.isAssignableFrom(jsonVal.getClass())) { props.setProperty(ClientProperty.POOLING_MAX_SIZE.getKeyName(), ((JsonNumber) jsonVal).toString()); } else if (JsonString.class.isAssignableFrom(jsonVal.getClass())) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_MAX_SIZE.getKeyName(), ((JsonString) jsonVal).getString())); } else { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_MAX_SIZE.getKeyName(), jsonVal.toFormattedString())); } } jsonVal = poolingDoc.remove("maxIdleTime"); if (jsonVal != null) { if (JsonNumber.class.isAssignableFrom(jsonVal.getClass())) { props.setProperty(ClientProperty.POOLING_MAX_IDLE_TIME.getKeyName(), ((JsonNumber) jsonVal).toString()); } else if (JsonString.class.isAssignableFrom(jsonVal.getClass())) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_MAX_IDLE_TIME.getKeyName(), ((JsonString) jsonVal).getString())); } else { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_MAX_IDLE_TIME.getKeyName(), jsonVal.toFormattedString())); } } jsonVal = poolingDoc.remove("queueTimeout"); if (jsonVal != null) { if (JsonNumber.class.isAssignableFrom(jsonVal.getClass())) { props.setProperty(ClientProperty.POOLING_QUEUE_TIMEOUT.getKeyName(), ((JsonNumber) jsonVal).toString()); } else if (JsonString.class.isAssignableFrom(jsonVal.getClass())) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_QUEUE_TIMEOUT.getKeyName(), ((JsonString) jsonVal).getString())); } else { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", ClientProperty.POOLING_QUEUE_TIMEOUT.getKeyName(), jsonVal.toFormattedString())); } } if (poolingDoc.size() > 0) { String key = poolingDoc.keySet().stream().findFirst().get(); throw new XDevAPIError(String.format("Client option 'pooling.%s' is not recognized as valid.", key)); } } if (!clientPropsDoc.isEmpty()) { String key = clientPropsDoc.keySet().stream().findFirst().get(); throw new XDevAPIError(String.format("Client option '%s' is not recognized as valid.", key)); } return props; } private void validateAndInitializeClientProps(Properties clientProps) { String propKey = ""; String propValue = ""; propKey = ClientProperty.POOLING_ENABLED.getKeyName(); if (clientProps.containsKey(propKey)) { propValue = clientProps.getProperty(propKey); try { this.poolingEnabled = BooleanPropertyDefinition.booleanFrom(propKey, propValue, null); } catch (CJException e) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", propKey, propValue), e); } } propKey = ClientProperty.POOLING_MAX_SIZE.getKeyName(); if (clientProps.containsKey(propKey)) { propValue = clientProps.getProperty(propKey); try { this.maxSize = IntegerPropertyDefinition.integerFrom(propKey, propValue, 1, null); } catch (WrongArgumentException e) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", propKey, propValue), e); } if (this.maxSize <= 0) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", propKey, propValue)); } } propKey = ClientProperty.POOLING_MAX_IDLE_TIME.getKeyName(); if (clientProps.containsKey(propKey)) { propValue = clientProps.getProperty(propKey); try { this.maxIdleTime = IntegerPropertyDefinition.integerFrom(propKey, propValue, 1, null); } catch (WrongArgumentException e) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", propKey, propValue), e); } if (this.maxIdleTime < 0) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", propKey, propValue)); } } propKey = ClientProperty.POOLING_QUEUE_TIMEOUT.getKeyName(); if (clientProps.containsKey(propKey)) { propValue = clientProps.getProperty(propKey); try { this.queueTimeout = IntegerPropertyDefinition.integerFrom(propKey, propValue, 1, null); } catch (WrongArgumentException e) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", propKey, propValue), e); } if (this.queueTimeout < 0) { throw new XDevAPIError(String.format("Client option '%s' does not support value '%s'.", propKey, propValue)); } } List<String> clientPropsAsString = Stream.of(ClientProperty.values()).map(ClientProperty::getKeyName).collect(Collectors.toList()); propKey = (String) clientProps.keySet().stream().filter(k -> !clientPropsAsString.contains(k)).findFirst().orElse(null); if (propKey != null) { throw new XDevAPIError(String.format("Client option '%s' is not recognized as valid.", propKey)); } } private void init(String url, Properties clientProps) { this.connUrl = this.sessionFactory.parseUrl(url); validateAndInitializeClientProps(clientProps); if (this.poolingEnabled) { this.demotedHosts = new HashMap<>(); this.idleProtocols = new LinkedBlockingQueue<>(this.maxSize); this.activeProtocols = new HashSet<>(this.maxSize); } else { this.nonPooledSessions = new HashSet<>(); } } @Override public Session getSession() { if (this.isClosed) { throw new XDevAPIError("Client is closed."); } if (!this.poolingEnabled) { synchronized (this) { // Remove nulled and closed session references from the nonPooledSessions set. List<WeakReference<Session>> obsoletedSessions = new ArrayList<>(); for (WeakReference<Session> ws : this.nonPooledSessions) { if (ws != null) { Session s = ws.get(); if (s == null || !s.isOpen()) { obsoletedSessions.add(ws); } } } for (WeakReference<Session> ws : obsoletedSessions) { this.nonPooledSessions.remove(ws); } Session sess = this.sessionFactory.getSession(this.connUrl); this.nonPooledSessions.add(new WeakReference<>(sess)); return sess; } } PooledXProtocol prot = null; List<HostInfo> hostsList = this.connUrl.getHostsList(); synchronized (this) { // 0. Close and remove idle protocols connected to a host that is not usable anymore. List<PooledXProtocol> toCloseAndRemove = this.idleProtocols.stream().filter(p -> !p.isHostInfoValid(hostsList)).collect(Collectors.toList()); toCloseAndRemove.stream().peek(PooledXProtocol::realClose).peek(this.idleProtocols::remove).map(PooledXProtocol::getHostInfo).sequential() .forEach(this.demotedHosts::remove); } long start = System.currentTimeMillis(); while (prot == null && (this.queueTimeout == 0 || System.currentTimeMillis() < start + this.queueTimeout)) { // TODO how to avoid endless loop? synchronized (this.idleProtocols) { if (this.idleProtocols.peek() != null) { // 1. If there are idle Protocols then return one of them. PooledXProtocol tryProt = this.idleProtocols.poll(); if (tryProt.isOpen()) { // ignore closed Session, try next idle Session if (tryProt.isIdleTimeoutReached()) { tryProt.realClose(); // close expired Session, try next idle Session } else { try { tryProt.reset(); prot = tryProt; } catch (CJCommunicationsException | XProtocolError e) { // This session is useless, let's try another one. } } } } else if (this.idleProtocols.size() + this.activeProtocols.size() < this.maxSize) { // 2. No idle Protocols but the pool has free space. Adding new Protocol to pool. CJException latestException = null; List<HostInfo> hostsToRevisit = new ArrayList<>(); for (HostInfo hi : hostsList) { if (this.demotedHosts.containsKey(hi)) { if (start - this.demotedHosts.get(hi) > this.demotedTimeout) { this.demotedHosts.remove(hi); } else { hostsToRevisit.add(hi); continue; } } try { prot = newPooledXProtocol(hi); break; } catch (CJCommunicationsException e) { if (e.getCause() == null) { throw e; } latestException = e; this.demotedHosts.put(hi, System.currentTimeMillis()); } } if (prot == null) { // All non-demoted hosts have failed, let's try the ones that were previously demoted before calling it a failure. for (HostInfo hi : hostsToRevisit) { try { prot = newPooledXProtocol(hi); // This host is fine now so re-promote it. this.demotedHosts.remove(hi); break; } catch (CJCommunicationsException e) { if (e.getCause() == null) { throw e; } latestException = e; this.demotedHosts.put(hi, System.currentTimeMillis()); } } } if (prot == null && latestException != null) { throw ExceptionFactory.createException(CJCommunicationsException.class, Messages.getString("Session.Create.Failover.0"), latestException); } } else if (this.queueTimeout > 0) { // 3. No idle Protocols, no free space in the pool. Waiting queueTimeout milliseconds for idle Protocol. long currentTimeout = this.queueTimeout - (System.currentTimeMillis() - start); try { if (currentTimeout > 0) { prot = this.idleProtocols.poll(currentTimeout, TimeUnit.MILLISECONDS); } } catch (InterruptedException e) { throw new XDevAPIError("Session can not be obtained within " + this.queueTimeout + " milliseconds.", e); } } else { // 4. No idle Protocols, no free space in the pool. Waiting indefinitely for idle Protocol. prot = this.idleProtocols.poll(); // TODO endless lock ? } } } if (prot == null) { throw new XDevAPIError("Session can not be obtained within " + this.queueTimeout + " milliseconds."); } synchronized (this) { this.activeProtocols.add(new WeakReference<>(prot)); } SessionImpl sess = new SessionImpl(prot); return sess; } private PooledXProtocol newPooledXProtocol(HostInfo hi) { PooledXProtocol tryProt; PropertySet pset = new DefaultPropertySet(); pset.initializeProperties(hi.exposeAsProperties()); tryProt = new PooledXProtocol(hi, pset); tryProt.addListener(this); tryProt.connect(hi.getUser(), hi.getPassword(), hi.getDatabase()); return tryProt; } @Override public void close() { synchronized (this) { if (this.poolingEnabled) { if (!this.isClosed) { this.isClosed = true; this.idleProtocols.forEach(s -> s.realClose()); this.idleProtocols.clear(); this.activeProtocols.stream().map(WeakReference::get).filter(Objects::nonNull).forEach(s -> s.realClose()); this.activeProtocols.clear(); } } else { this.nonPooledSessions.stream().map(WeakReference::get).filter(Objects::nonNull).filter(Session::isOpen).forEach(s -> s.close()); } } } void idleProtocol(PooledXProtocol prot) { synchronized (this) { if (!this.isClosed) { List<WeakReference<PooledXProtocol>> removeThem = new ArrayList<>(); for (WeakReference<PooledXProtocol> wps : this.activeProtocols) { if (wps != null) { PooledXProtocol as = wps.get(); if (as == null) { removeThem.add(wps); } else if (as == prot) { removeThem.add(wps); this.idleProtocols.add(as); } } } for (WeakReference<PooledXProtocol> wr : removeThem) { this.activeProtocols.remove(wr); } } } } public class PooledXProtocol extends XProtocol { long idleSince = -1; HostInfo hostInfo = null; public PooledXProtocol(HostInfo hostInfo, PropertySet propertySet) { super(hostInfo, propertySet); this.hostInfo = hostInfo; } @Override public void close() { reset(); this.idleSince = System.currentTimeMillis(); idleProtocol(this); } public HostInfo getHostInfo() { return this.hostInfo; } boolean isIdleTimeoutReached() { return ClientImpl.this.maxIdleTime > 0 && this.idleSince > 0 && System.currentTimeMillis() > this.idleSince + ClientImpl.this.maxIdleTime; } boolean isHostInfoValid(List<HostInfo> hostsList) { return hostsList.stream().filter(h -> h.equalHostPortPair(this.hostInfo)).findFirst().isPresent(); } void realClose() { try { super.close(); } catch (IOException e) { // TODO is it really no-op? } } } @Override public void handleEvent(EventType type, Object info, Throwable reason) { switch (type) { case SERVER_SHUTDOWN: HostInfo hi = ((PooledXProtocol) info).getHostInfo(); synchronized (this) { // Close and remove idle protocols connected to a host that is not usable anymore. List<PooledXProtocol> toCloseAndRemove = this.idleProtocols.stream().filter(p -> p.getHostInfo().equalHostPortPair(hi)) .collect(Collectors.toList()); toCloseAndRemove.stream().peek(PooledXProtocol::realClose).peek(this.idleProtocols::remove).map(PooledXProtocol::getHostInfo).sequential() .forEach(this.demotedHosts::remove); removeActivePooledXProtocol((PooledXProtocol) info); } break; case SERVER_CLOSED_SESSION: synchronized (this) { removeActivePooledXProtocol((PooledXProtocol) info); } break; default: break; } } private void removeActivePooledXProtocol(PooledXProtocol prot) { WeakReference<PooledXProtocol> wprot = null; for (WeakReference<PooledXProtocol> wps : this.activeProtocols) { if (wps != null) { PooledXProtocol as = wps.get(); if (as == prot) { wprot = wps; break; } } } this.activeProtocols.remove(wprot); prot.realClose(); } }
⏎ com/mysql/cj/xdevapi/ClientImpl.java
Or download all of them as a single archive file:
File name: mysql-connector-java-user-impl-8.0.31.zip File size: 429580 bytes Release date: 2022-09-03 Download
⇒ Downloading mysql-connector-java-5.1.40.zip
⇐ Source Code for Connector/J 8.0.31 - User API
2023-05-09, 7705👍, 0💬
Popular Posts:
How to read XML document from socket connections with the socket\DelayedInput.java provided in the A...
itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java libr...
JSP(tm) Standard Tag Library 1.1 implementation - Jakarta Taglibs hosts the Standard Taglib 1.1, an ...
HttpComponents Core Source Code Files are provided in the source package file, httpcomponents-core-5...
JSP(tm) Standard Tag Library 1.0 implementation - Jakarta Taglibs hosts the Standard Taglib 1.0, an ...