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/*
* Copyright (c) 2016, 2020, 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.conf.url;
import static com.mysql.cj.util.StringUtils.isNullOrEmpty;
import static com.mysql.cj.util.StringUtils.safeTrim;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;
import java.util.stream.Collectors;
import com.mysql.cj.Messages;
import com.mysql.cj.conf.ConnectionUrl;
import com.mysql.cj.conf.ConnectionUrlParser;
import com.mysql.cj.conf.ConnectionUrlParser.Pair;
import com.mysql.cj.conf.HostInfo;
import com.mysql.cj.conf.HostsListView;
import com.mysql.cj.conf.PropertyKey;
import com.mysql.cj.exceptions.ExceptionFactory;
import com.mysql.cj.exceptions.WrongArgumentException;
public class XDevApiConnectionUrl extends ConnectionUrl {
private static final int DEFAULT_PORT = 33060;
private boolean prioritySorted = false;
private boolean hasDuplicatedPriorities = false;
/**
* Constructs an instance of {@link XDevApiConnectionUrl}, performing all the required initializations.
*
* @param connStrParser
* a {@link ConnectionUrlParser} instance containing the parsed version of the original connection string
* @param info
* the connection arguments map
*/
public XDevApiConnectionUrl(ConnectionUrlParser connStrParser, Properties info) {
super(connStrParser, info);
this.type = Type.XDEVAPI_SESSION;
/*
* Validate the hosts list:
* 1. Same user and password are required in all hosts.
* 2. If the host property 'priority' is set for one host, then in needs to be set on all others too.
* 3. 'Priority' value must be between 0 and 100.
*/
boolean first = true;
String user = null;
String password = null;
boolean hasPriority = false;
Set priorities = new HashSet<>();
for (HostInfo hi : this.hosts) {
if (first) {
first = false;
user = hi.getUser();
password = hi.getPassword();
hasPriority = hi.getHostProperties().containsKey(PropertyKey.PRIORITY.getKeyName());
} else {
if (!user.equals(hi.getUser()) || !password.equals(hi.getPassword())) {
throw ExceptionFactory.createException(WrongArgumentException.class,
Messages.getString("ConnectionString.14", new Object[] { Type.XDEVAPI_SESSION.getScheme() }));
}
if (hasPriority ^ hi.getHostProperties().containsKey(PropertyKey.PRIORITY.getKeyName())) {
throw ExceptionFactory.createException(WrongArgumentException.class,
Messages.getString("ConnectionString.15", new Object[] { Type.XDEVAPI_SESSION.getScheme() }));
}
}
if (hasPriority) {
try {
int priority = Integer.parseInt(hi.getProperty(PropertyKey.PRIORITY.getKeyName()));
if (priority < 0 || priority > 100) {
throw ExceptionFactory.createException(WrongArgumentException.class,
Messages.getString("ConnectionString.16", new Object[] { Type.XDEVAPI_SESSION.getScheme() }));
}
if (priorities.contains(priority)) {
this.hasDuplicatedPriorities = true;
} else {
priorities.add(priority);
}
} catch (NumberFormatException e) {
throw ExceptionFactory.createException(WrongArgumentException.class,
Messages.getString("ConnectionString.16", new Object[] { Type.XDEVAPI_SESSION.getScheme() }));
}
}
}
// Sort the hosts list according to their priority settings.
if (hasPriority) {
this.prioritySorted = true;
this.hosts.sort(
Comparator.comparing(hi -> Integer.parseInt(hi.getHostProperties().get(PropertyKey.PRIORITY.getKeyName()))).reversed());
}
}
@Override
protected void preprocessPerTypeHostProperties(Map hostProps) {
if (hostProps.containsKey(PropertyKey.ADDRESS.getKeyName())) {
String address = hostProps.get(PropertyKey.ADDRESS.getKeyName());
Pair hostPortPair = ConnectionUrlParser.parseHostPortPair(address);
String host = safeTrim(hostPortPair.left);
Integer port = hostPortPair.right;
if (!isNullOrEmpty(host) && !hostProps.containsKey(PropertyKey.HOST.getKeyName())) {
hostProps.put(PropertyKey.HOST.getKeyName(), host);
}
if (port != -1 && !hostProps.containsKey(PropertyKey.PORT.getKeyName())) {
hostProps.put(PropertyKey.PORT.getKeyName(), port.toString());
}
}
}
@Override
public int getDefaultPort() {
return DEFAULT_PORT;
}
@Override
protected void fixProtocolDependencies(Map hostProps) {
// Not needed. Abort this operation.
}
@Override
public List getHostsList(HostsListView view) {
if (this.prioritySorted) {
if (this.hasDuplicatedPriorities) { // Randomly sort hosts with same priority.
Map> hostsByPriority = this.hosts.stream()
.collect(Collectors.groupingBy(hi -> Integer.valueOf(hi.getHostProperties().get(PropertyKey.PRIORITY.getKeyName()))));
this.hosts = hostsByPriority.entrySet().stream()
.sorted(Comparator.>, Integer>comparing(Entry::getKey).reversed()).map(Entry::getValue)
.peek(Collections::shuffle).flatMap(List::stream).collect(Collectors.toList());
}
} else { // Random sorted.
Collections.shuffle(this.hosts);
}
return super.getHostsList(view);
}
}
