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/*
* Copyright (c) 2015, 2022, 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.protocol.x;
import static java.util.stream.Collectors.toMap;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.TreeMap;
import java.util.concurrent.CompletableFuture;
import java.util.function.Consumer;
import java.util.function.Supplier;
import com.google.protobuf.GeneratedMessageV3;
import com.mysql.cj.Constants;
import com.mysql.cj.Messages;
import com.mysql.cj.QueryResult;
import com.mysql.cj.Session;
import com.mysql.cj.TransactionEventHandler;
import com.mysql.cj.conf.HostInfo;
import com.mysql.cj.conf.PropertyDefinitions.Compression;
import com.mysql.cj.conf.PropertyDefinitions.SslMode;
import com.mysql.cj.conf.PropertyDefinitions.XdevapiSslMode;
import com.mysql.cj.conf.PropertyKey;
import com.mysql.cj.conf.PropertySet;
import com.mysql.cj.conf.RuntimeProperty;
import com.mysql.cj.exceptions.AssertionFailedException;
import com.mysql.cj.exceptions.CJCommunicationsException;
import com.mysql.cj.exceptions.CJConnectionFeatureNotAvailableException;
import com.mysql.cj.exceptions.CJOperationNotSupportedException;
import com.mysql.cj.exceptions.ConnectionIsClosedException;
import com.mysql.cj.exceptions.ExceptionFactory;
import com.mysql.cj.exceptions.ExceptionInterceptor;
import com.mysql.cj.exceptions.FeatureNotAvailableException;
import com.mysql.cj.exceptions.MysqlErrorNumbers;
import com.mysql.cj.exceptions.SSLParamsException;
import com.mysql.cj.exceptions.WrongArgumentException;
import com.mysql.cj.log.Log;
import com.mysql.cj.log.LogFactory;
import com.mysql.cj.protocol.AbstractProtocol;
import com.mysql.cj.protocol.ColumnDefinition;
import com.mysql.cj.protocol.ExportControlled;
import com.mysql.cj.protocol.FullReadInputStream;
import com.mysql.cj.protocol.Message;
import com.mysql.cj.protocol.MessageListener;
import com.mysql.cj.protocol.MessageReader;
import com.mysql.cj.protocol.MessageSender;
import com.mysql.cj.protocol.Protocol;
import com.mysql.cj.protocol.ProtocolEntity;
import com.mysql.cj.protocol.ProtocolEntityFactory;
import com.mysql.cj.protocol.ResultBuilder;
import com.mysql.cj.protocol.ResultStreamer;
import com.mysql.cj.protocol.Resultset;
import com.mysql.cj.protocol.ServerCapabilities;
import com.mysql.cj.protocol.ServerSession;
import com.mysql.cj.protocol.SocketConnection;
import com.mysql.cj.protocol.ValueEncoder;
import com.mysql.cj.protocol.a.NativeSocketConnection;
import com.mysql.cj.protocol.x.Notice.XSessionStateChanged;
import com.mysql.cj.result.DefaultColumnDefinition;
import com.mysql.cj.result.Field;
import com.mysql.cj.result.LongValueFactory;
import com.mysql.cj.util.SequentialIdLease;
import com.mysql.cj.util.StringUtils;
import com.mysql.cj.x.protobuf.Mysqlx.Error;
import com.mysql.cj.x.protobuf.Mysqlx.ServerMessages;
import com.mysql.cj.x.protobuf.MysqlxConnection.Capabilities;
import com.mysql.cj.x.protobuf.MysqlxConnection.Capability;
import com.mysql.cj.x.protobuf.MysqlxNotice.Frame;
import com.mysql.cj.x.protobuf.MysqlxResultset.ColumnMetaData;
import com.mysql.cj.x.protobuf.MysqlxResultset.FetchDone;
import com.mysql.cj.x.protobuf.MysqlxResultset.FetchDoneMoreResultsets;
import com.mysql.cj.x.protobuf.MysqlxResultset.Row;
import com.mysql.cj.x.protobuf.MysqlxSession.AuthenticateContinue;
import com.mysql.cj.x.protobuf.MysqlxSql.StmtExecuteOk;
import com.mysql.cj.xdevapi.PreparableStatement;
import com.mysql.cj.xdevapi.PreparableStatement.PreparableStatementFinalizer;
/**
* Low-level interface to communications with X Plugin.
*/
public class XProtocol extends AbstractProtocol implements Protocol {
private static int RETRY_PREPARE_STATEMENT_COUNTDOWN = 100;
private MessageReader reader;
private MessageSender sender;
/** We take responsibility of the socket as the managed resource. We close it when we're done. */
private Closeable managedResource;
private ResultStreamer currentResultStreamer;
XServerSession serverSession = null;
Boolean useSessionResetKeepOpen = null;
public String defaultSchemaName;
private Map clientCapabilities = new HashMap<>();
/** Keeps track of whether this X Server session supports prepared statements. True by default until first failure of a statement prepare. */
private boolean supportsPreparedStatements = true;
private int retryPrepareStatementCountdown = 0;
private SequentialIdLease preparedStatementIds = new SequentialIdLease();
private ReferenceQueue> preparableStatementRefQueue = new ReferenceQueue<>();
private Map preparableStatementFinalizerReferences = new TreeMap<>();
private boolean compressionEnabled = false;
private CompressionAlgorithm compressionAlgorithm;
private Map, ProtocolEntityFactory> messageToProtocolEntityFactory = new HashMap<>();
public XProtocol(HostInfo hostInfo, PropertySet propertySet) {
String host = hostInfo.getHost();
if (host == null || StringUtils.isEmptyOrWhitespaceOnly(host)) {
host = "localhost";
}
int port = hostInfo.getPort();
if (port < 0) {
port = 33060;
}
this.defaultSchemaName = hostInfo.getDatabase();
// Override common connectTimeout with xdevapi.connect-timeout to provide unified logic in StandardSocketFactory
RuntimeProperty connectTimeout = propertySet.getIntegerProperty(PropertyKey.connectTimeout);
RuntimeProperty xdevapiConnectTimeout = propertySet.getIntegerProperty(PropertyKey.xdevapiConnectTimeout);
if (xdevapiConnectTimeout.isExplicitlySet() || !connectTimeout.isExplicitlySet()) {
connectTimeout.setValue(xdevapiConnectTimeout.getValue());
}
SocketConnection socketConn = new NativeSocketConnection();
socketConn.connect(host, port, propertySet, null, null, 0);
init(null, socketConn, propertySet, null);
}
@Override
public void init(Session sess, SocketConnection socketConn, PropertySet propSet, TransactionEventHandler trManager) {
super.init(sess, socketConn, propSet, trManager);
// Session is not kept, so we need to do this
this.log = LogFactory.getLogger(getPropertySet().getStringProperty(PropertyKey.logger).getStringValue(), Log.LOGGER_INSTANCE_NAME);
this.messageBuilder = new XMessageBuilder();
this.authProvider = new XAuthenticationProvider();
this.authProvider.init(this, propSet, null);
this.useSessionResetKeepOpen = null;
this.messageToProtocolEntityFactory.put(ColumnMetaData.class, new FieldFactory("latin1")); // TODO configure metadata character set from server session
this.messageToProtocolEntityFactory.put(Frame.class, new NoticeFactory());
this.messageToProtocolEntityFactory.put(Row.class, new XProtocolRowFactory());
this.messageToProtocolEntityFactory.put(FetchDoneMoreResultsets.class, new FetchDoneMoreResultsFactory());
this.messageToProtocolEntityFactory.put(FetchDone.class, new FetchDoneEntityFactory());
this.messageToProtocolEntityFactory.put(StmtExecuteOk.class, new StatementExecuteOkFactory());
this.messageToProtocolEntityFactory.put(com.mysql.cj.x.protobuf.Mysqlx.Ok.class, new OkFactory());
}
public ServerSession getServerSession() {
return this.serverSession;
}
/**
* Set client capabilities of current session. Must be done before authentication ({@link #changeUser(String, String, String)}).
*
* @param keyValuePair
* capabilities name/value map
*/
public void sendCapabilities(Map keyValuePair) {
keyValuePair.forEach((k, v) -> ((XServerCapabilities) getServerSession().getCapabilities()).setCapability(k, v));
this.sender.send(((XMessageBuilder) this.messageBuilder).buildCapabilitiesSet(keyValuePair));
readQueryResult(new OkBuilder());
}
public void negotiateSSLConnection() {
if (!ExportControlled.enabled()) {
throw new CJConnectionFeatureNotAvailableException();
}
if (!((XServerCapabilities) this.serverSession.getCapabilities()).hasCapability(XServerCapabilities.KEY_TLS)) {
throw new CJCommunicationsException("A secure connection is required but the server is not configured with SSL.");
}
// the message reader is async and is always "reading". we need to stop it to use the socket for the TLS handshake
this.reader.stopAfterNextMessage();
Map tlsCapabilities = new HashMap<>();
tlsCapabilities.put(XServerCapabilities.KEY_TLS, true);
sendCapabilities(tlsCapabilities);
try {
this.socketConnection.performTlsHandshake(null, this.log);
} catch (SSLParamsException | FeatureNotAvailableException | IOException e) {
throw new CJCommunicationsException(e);
}
try {
this.sender = new SyncMessageSender(this.socketConnection.getMysqlOutput());
this.reader = new SyncMessageReader(this.socketConnection.getMysqlInput(), this);
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
/**
* Negotiates compression capabilities with the server.
*/
public void negotiateCompression() {
Compression compression = this.propertySet.getEnumProperty(PropertyKey.xdevapiCompression.getKeyName()).getValue();
if (compression == Compression.DISABLED) {
return;
}
Map> compressionCapabilities = this.serverSession.serverCapabilities.getCompression();
if (compressionCapabilities.isEmpty() || !compressionCapabilities.containsKey(XServerCapabilities.SUBKEY_COMPRESSION_ALGORITHM)
|| compressionCapabilities.get(XServerCapabilities.SUBKEY_COMPRESSION_ALGORITHM).isEmpty()) {
if (compression == Compression.REQUIRED) {
throw ExceptionFactory.createException(WrongArgumentException.class, Messages.getString("Protocol.Compression.0"));
} // TODO Log "Compression negotiation failed. Connection will proceed uncompressed."
return;
}
RuntimeProperty compressionAlgorithmsProp = this.propertySet.getStringProperty(PropertyKey.xdevapiCompressionAlgorithms.getKeyName());
String compressionAlgorithmsList = compressionAlgorithmsProp.getValue();
compressionAlgorithmsList = compressionAlgorithmsList == null ? "" : compressionAlgorithmsList.trim();
String[] compressionAlgorithmsOrder;
String[] compressionAlgsOrder = compressionAlgorithmsList.split("\\s*,\\s*");
compressionAlgorithmsOrder = Arrays.stream(compressionAlgsOrder).sequential().filter(n -> n != null && n.length() > 0).map(String::toLowerCase)
.map(CompressionAlgorithm::getNormalizedAlgorithmName).toArray(String[]::new);
String compressionExtensions = this.propertySet.getStringProperty(PropertyKey.xdevapiCompressionExtensions.getKeyName()).getValue();
compressionExtensions = compressionExtensions == null ? "" : compressionExtensions.trim();
Map compressionAlgorithms = getCompressionExtensions(compressionExtensions);
Optional algorithmOpt = Arrays.stream(compressionAlgorithmsOrder).sequential()
.filter(compressionCapabilities.get(XServerCapabilities.SUBKEY_COMPRESSION_ALGORITHM)::contains).filter(compressionAlgorithms::containsKey)
.findFirst();
if (!algorithmOpt.isPresent()) {
if (compression == Compression.REQUIRED) {
throw ExceptionFactory.createException(WrongArgumentException.class, Messages.getString("Protocol.Compression.2"));
} // TODO Log "Compression negotiation failed. Connection will proceed uncompressed."
return;
}
String algorithm = algorithmOpt.get();
this.compressionAlgorithm = compressionAlgorithms.get(algorithm);
// Make sure the picked compression algorithm streams exist.
this.compressionAlgorithm.getInputStreamClass();
this.compressionAlgorithm.getOutputStreamClass();
Map compressionCap = new HashMap<>();
compressionCap.put(XServerCapabilities.SUBKEY_COMPRESSION_ALGORITHM, algorithm);
compressionCap.put(XServerCapabilities.SUBKEY_COMPRESSION_SERVER_COMBINE_MIXED_MESSAGES, true);
sendCapabilities(Collections.singletonMap(XServerCapabilities.KEY_COMPRESSION, compressionCap));
this.compressionEnabled = true;
}
public void beforeHandshake() {
this.serverSession = new XServerSession();
try {
this.sender = new SyncMessageSender(this.socketConnection.getMysqlOutput());
this.reader = new SyncMessageReader(this.socketConnection.getMysqlInput(), this);
this.managedResource = this.socketConnection.getMysqlSocket();
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
this.serverSession.setCapabilities(readServerCapabilities());
// connection attributes
String attributes = this.propertySet.getStringProperty(PropertyKey.xdevapiConnectionAttributes).getValue();
if (attributes == null || !attributes.equalsIgnoreCase("false")) {
Map attMap = getConnectionAttributesMap("true".equalsIgnoreCase(attributes) ? "" : attributes);
this.clientCapabilities.put(XServerCapabilities.KEY_SESSION_CONNECT_ATTRS, attMap);
}
// Override JDBC (global) SSL properties with X DevAPI ones to provide unified logic in ExportControlled via common SSL properties.
RuntimeProperty xdevapiSslMode = this.propertySet.getEnumProperty(PropertyKey.xdevapiSslMode);
RuntimeProperty jdbcSslMode = this.propertySet.getEnumProperty(PropertyKey.sslMode);
if (xdevapiSslMode.isExplicitlySet() || !jdbcSslMode.isExplicitlySet()) {
jdbcSslMode.setValue(SslMode.valueOf(xdevapiSslMode.getValue().toString()));
}
RuntimeProperty xdevapiSslKeyStoreUrl = this.propertySet.getStringProperty(PropertyKey.xdevapiSslKeyStoreUrl);
RuntimeProperty jdbcClientCertKeyStoreUrl = this.propertySet.getStringProperty(PropertyKey.clientCertificateKeyStoreUrl);
if (xdevapiSslKeyStoreUrl.isExplicitlySet() || !jdbcClientCertKeyStoreUrl.isExplicitlySet()) {
jdbcClientCertKeyStoreUrl.setValue(xdevapiSslKeyStoreUrl.getValue());
}
RuntimeProperty xdevapiSslKeyStoreType = this.propertySet.getStringProperty(PropertyKey.xdevapiSslKeyStoreType);
RuntimeProperty jdbcClientCertKeyStoreType = this.propertySet.getStringProperty(PropertyKey.clientCertificateKeyStoreType);
if (xdevapiSslKeyStoreType.isExplicitlySet() || !jdbcClientCertKeyStoreType.isExplicitlySet()) {
jdbcClientCertKeyStoreType.setValue(xdevapiSslKeyStoreType.getValue());
}
RuntimeProperty xdevapiSslKeyStorePassword = this.propertySet.getStringProperty(PropertyKey.xdevapiSslKeyStorePassword);
RuntimeProperty jdbcClientCertKeyStorePassword = this.propertySet.getStringProperty(PropertyKey.clientCertificateKeyStorePassword);
if (xdevapiSslKeyStorePassword.isExplicitlySet() || !jdbcClientCertKeyStorePassword.isExplicitlySet()) {
jdbcClientCertKeyStorePassword.setValue(xdevapiSslKeyStorePassword.getValue());
}
RuntimeProperty xdevapiFallbackToSystemKeyStore = this.propertySet.getBooleanProperty(PropertyKey.xdevapiFallbackToSystemKeyStore);
RuntimeProperty jdbcFallbackToSystemKeyStore = this.propertySet.getBooleanProperty(PropertyKey.fallbackToSystemKeyStore);
if (xdevapiFallbackToSystemKeyStore.isExplicitlySet() || !jdbcFallbackToSystemKeyStore.isExplicitlySet()) {
jdbcFallbackToSystemKeyStore.setValue(xdevapiFallbackToSystemKeyStore.getValue());
}
RuntimeProperty xdevapiSslTrustStoreUrl = this.propertySet.getStringProperty(PropertyKey.xdevapiSslTrustStoreUrl);
RuntimeProperty jdbcTrustCertKeyStoreUrl = this.propertySet.getStringProperty(PropertyKey.trustCertificateKeyStoreUrl);
if (xdevapiSslTrustStoreUrl.isExplicitlySet() || !jdbcTrustCertKeyStoreUrl.isExplicitlySet()) {
jdbcTrustCertKeyStoreUrl.setValue(xdevapiSslTrustStoreUrl.getValue());
}
RuntimeProperty xdevapiSslTrustStoreType = this.propertySet.getStringProperty(PropertyKey.xdevapiSslTrustStoreType);
RuntimeProperty jdbcTrustCertKeyStoreType = this.propertySet.getStringProperty(PropertyKey.trustCertificateKeyStoreType);
if (xdevapiSslTrustStoreType.isExplicitlySet() || !jdbcTrustCertKeyStoreType.isExplicitlySet()) {
jdbcTrustCertKeyStoreType.setValue(xdevapiSslTrustStoreType.getValue());
}
RuntimeProperty xdevapiSslTrustStorePassword = this.propertySet.getStringProperty(PropertyKey.xdevapiSslTrustStorePassword);
RuntimeProperty jdbcTrustCertKeyStorePassword = this.propertySet.getStringProperty(PropertyKey.trustCertificateKeyStorePassword);
if (xdevapiSslTrustStorePassword.isExplicitlySet() || !jdbcTrustCertKeyStorePassword.isExplicitlySet()) {
jdbcTrustCertKeyStorePassword.setValue(xdevapiSslTrustStorePassword.getValue());
}
RuntimeProperty xdevapiFallbackToSystemTrustStore = this.propertySet.getBooleanProperty(PropertyKey.xdevapiFallbackToSystemTrustStore);
RuntimeProperty jdbcFallbackToSystemTrustStore = this.propertySet.getBooleanProperty(PropertyKey.fallbackToSystemTrustStore);
if (xdevapiFallbackToSystemTrustStore.isExplicitlySet() || !jdbcFallbackToSystemTrustStore.isExplicitlySet()) {
jdbcFallbackToSystemTrustStore.setValue(xdevapiFallbackToSystemTrustStore.getValue());
}
RuntimeProperty sslMode = jdbcSslMode; // JDBC (global) sslMode is used from now on.
if (sslMode.getValue() == SslMode.PREFERRED) { // PREFERRED mode is not applicable for X Protocol.
sslMode.setValue(SslMode.REQUIRED);
}
if (sslMode.getValue() != SslMode.DISABLED) {
RuntimeProperty xdevapiTlsVersions = this.propertySet.getStringProperty(PropertyKey.xdevapiTlsVersions);
RuntimeProperty jdbcEnabledTlsProtocols = this.propertySet.getStringProperty(PropertyKey.tlsVersions);
if (xdevapiTlsVersions.isExplicitlySet()) {
String[] tlsVersions = xdevapiTlsVersions.getValue().split("\\s*,\\s*");
List tryProtocols = Arrays.asList(tlsVersions);
ExportControlled.checkValidProtocols(tryProtocols);
jdbcEnabledTlsProtocols.setValue(xdevapiTlsVersions.getValue());
}
RuntimeProperty xdevapiTlsCiphersuites = this.propertySet.getStringProperty(PropertyKey.xdevapiTlsCiphersuites);
RuntimeProperty jdbcEnabledSslCipherSuites = this.propertySet.getStringProperty(PropertyKey.tlsCiphersuites);
if (xdevapiTlsCiphersuites.isExplicitlySet()) {
jdbcEnabledSslCipherSuites.setValue(xdevapiTlsCiphersuites.getValue());
}
}
if (this.clientCapabilities.size() > 0) {
try {
sendCapabilities(this.clientCapabilities);
} catch (XProtocolError e) {
// XProtocolError: ERROR 5002 (HY000) Capability 'session_connect_attrs' doesn't exist
// happens when connecting to xplugin which doesn't support this feature. Just ignore this error.
if (e.getErrorCode() != MysqlErrorNumbers.ER_X_CAPABILITY_NOT_FOUND
&& !e.getMessage().contains(XServerCapabilities.KEY_SESSION_CONNECT_ATTRS)) {
throw e;
}
this.clientCapabilities.remove(XServerCapabilities.KEY_SESSION_CONNECT_ATTRS);
}
}
if (jdbcSslMode.getValue() != SslMode.DISABLED) {
negotiateSSLConnection();
}
// Configure compression.
negotiateCompression();
}
private Map getConnectionAttributesMap(String attStr) {
Map attMap = new HashMap<>();
if (attStr != null) {
if (attStr.startsWith("[") && attStr.endsWith("]")) {
attStr = attStr.substring(1, attStr.length() - 1);
}
if (!StringUtils.isNullOrEmpty(attStr)) {
String[] pairs = attStr.split(",");
for (String pair : pairs) {
String[] kv = pair.split("=");
String key = kv[0].trim();
String value = kv.length > 1 ? kv[1].trim() : "";
if (key.startsWith("_")) {
throw ExceptionFactory.createException(WrongArgumentException.class, Messages.getString("Protocol.WrongAttributeName"));
} else if (attMap.put(key, value) != null) {
throw ExceptionFactory.createException(WrongArgumentException.class,
Messages.getString("Protocol.DuplicateAttribute", new Object[] { key }));
}
}
}
}
attMap.put("_platform", Constants.OS_ARCH);
attMap.put("_os", Constants.OS_NAME + "-" + Constants.OS_VERSION);
attMap.put("_client_name", Constants.CJ_NAME);
attMap.put("_client_version", Constants.CJ_VERSION);
attMap.put("_client_license", Constants.CJ_LICENSE);
attMap.put("_runtime_version", Constants.JVM_VERSION);
attMap.put("_runtime_vendor", Constants.JVM_VENDOR);
return attMap;
}
/**
* Parses and validates the value given for the connection option 'xdevapi.compression-extensions'. With the information obtained, creates a map of
* supported compression algorithms.
*
* @param compressionExtensions
* the value of the option 'xdevapi.compression-algorithm' containing a comma separated list of triplets with the format
* "algorithm-name:inflater-InputStream-class-name:deflater-OutputStream-class-name".
* @return
* a map with all the supported compression algorithms, both natively supported and user configured.
*/
private Map getCompressionExtensions(String compressionExtensions) {
Map compressionExtensionsMap = CompressionAlgorithm.getDefaultInstances();
if (compressionExtensions.length() == 0) {
return compressionExtensionsMap;
}
String[] compressionExtAlgs = compressionExtensions.split(",");
for (String compressionExtAlg : compressionExtAlgs) {
String[] compressionExtAlgParts = compressionExtAlg.split(":");
if (compressionExtAlgParts.length != 3) {
throw ExceptionFactory.createException(WrongArgumentException.class, Messages.getString("Protocol.Compression.1"));
}
String algorithmName = compressionExtAlgParts[0].toLowerCase();
String inputStreamClassName = compressionExtAlgParts[1];
String outputStreamClassName = compressionExtAlgParts[2];
CompressionAlgorithm compressionAlg = new CompressionAlgorithm(algorithmName, inputStreamClassName, outputStreamClassName);
compressionExtensionsMap.put(compressionAlg.getAlgorithmIdentifier(), compressionAlg);
}
return compressionExtensionsMap;
}
private String currUser = null, currPassword = null, currDatabase = null; // TODO remove these variables after implementing mysql_reset_connection() in reset() method
@Override
public void connect(String user, String password, String database) {
this.currUser = user;
this.currPassword = password;
this.currDatabase = database;
beforeHandshake();
this.authProvider.connect(user, password, database);
}
public void changeUser(String user, String password, String database) {
this.currUser = user;
this.currPassword = password;
this.currDatabase = database;
this.authProvider.changeUser(user, password, database);
}
public void afterHandshake() {
// setup all required server session states
if (this.compressionEnabled) {
try {
this.reader = new SyncMessageReader(new FullReadInputStream(
new CompressionSplittedInputStream(this.socketConnection.getMysqlInput(), new CompressorStreamsFactory(this.compressionAlgorithm))),
this);
} catch (IOException e) {
ExceptionFactory.createException(Messages.getString("Protocol.Compression.6"), e);
}
try {
this.sender = new SyncMessageSender(
new CompressionSplittedOutputStream(this.socketConnection.getMysqlOutput(), new CompressorStreamsFactory(this.compressionAlgorithm)));
} catch (IOException e) {
ExceptionFactory.createException(Messages.getString("Protocol.Compression.7"), e);
}
}
initServerSession();
}
@Override
public void configureTimeZone() {
// no-op
}
@Override
public void initServerSession() {
configureTimeZone();
send(this.messageBuilder.buildSqlStatement("select @@mysqlx_max_allowed_packet"), 0);
// TODO: can use a simple default for this as we don't need metadata. need to prevent against exceptions though
ColumnDefinition metadata = readMetadata();
long count = new XProtocolRowInputStream(metadata, this, null).next().getValue(0, new LongValueFactory(this.propertySet));
readQueryResult(new StatementExecuteOkBuilder());
setMaxAllowedPacket((int) count);
}
public void readAuthenticateOk() {
try {
XMessage mess = this.reader.readMessage(null, ServerMessages.Type.SESS_AUTHENTICATE_OK_VALUE);
if (mess != null && mess.getNotices() != null) {
for (Notice notice : mess.getNotices()) {
if (notice instanceof XSessionStateChanged) {
switch (((XSessionStateChanged) notice).getParamType()) {
case Notice.SessionStateChanged_CLIENT_ID_ASSIGNED:
this.getServerSession().getCapabilities().setThreadId(((XSessionStateChanged) notice).getValue().getVUnsignedInt());
break;
case Notice.SessionStateChanged_ACCOUNT_EXPIRED:
// TODO
break;
default:
break;
}
}
}
}
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
public byte[] readAuthenticateContinue() {
try {
AuthenticateContinue msg = (AuthenticateContinue) this.reader.readMessage(null, ServerMessages.Type.SESS_AUTHENTICATE_CONTINUE_VALUE).getMessage();
byte[] data = msg.getAuthData().toByteArray();
if (data.length != 20) {
throw AssertionFailedException.shouldNotHappen("Salt length should be 20, but is " + data.length);
}
return data;
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
public boolean hasMoreResults() {
try {
if (((SyncMessageReader) this.reader).getNextNonNoticeMessageType() == ServerMessages.Type.RESULTSET_FETCH_DONE_MORE_RESULTSETS_VALUE) {
this.reader.readMessage(null, ServerMessages.Type.RESULTSET_FETCH_DONE_MORE_RESULTSETS_VALUE);
if (((SyncMessageReader) this.reader).getNextNonNoticeMessageType() == ServerMessages.Type.RESULTSET_FETCH_DONE_VALUE) {
// possibly bug in xplugin sending FetchDone immediately following FetchDoneMoreResultsets
return false;
}
return true;
}
return false;
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
public T readQueryResult(ResultBuilder resultBuilder) {
try {
List notices;
boolean done = false;
while (!done) {
XMessageHeader header = this.reader.readHeader();
XMessage mess = this.reader.readMessage(null, header);
@SuppressWarnings("unchecked")
Class msgClass = (Class) mess.getMessage().getClass();
if (Error.class.equals(msgClass)) {
throw new XProtocolError(Error.class.cast(mess.getMessage()));
} else if (!this.messageToProtocolEntityFactory.containsKey(msgClass)) {
throw new WrongArgumentException("Unhandled msg class (" + msgClass + ") + msg=" + mess.getMessage());
}
if ((notices = mess.getNotices()) != null) {
notices.stream().forEach(resultBuilder::addProtocolEntity);
}
done = resultBuilder.addProtocolEntity(this.messageToProtocolEntityFactory.get(msgClass).createFromMessage(mess));
}
return resultBuilder.build();
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
/**
* Used only in tests
*
* @return true if there are result rows
*/
public boolean hasResults() {
try {
return ((SyncMessageReader) this.reader).getNextNonNoticeMessageType() == ServerMessages.Type.RESULTSET_COLUMN_META_DATA_VALUE;
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
/**
* Used only in tests
*/
public void drainRows() {
try {
while (((SyncMessageReader) this.reader).getNextNonNoticeMessageType() == ServerMessages.Type.RESULTSET_ROW_VALUE) {
this.reader.readMessage(null, ServerMessages.Type.RESULTSET_ROW_VALUE);
}
} catch (XProtocolError e) {
this.currentResultStreamer = null;
throw e;
} catch (IOException e) {
this.currentResultStreamer = null;
throw new XProtocolError(e.getMessage(), e);
}
}
public ColumnDefinition readMetadata() {
return readMetadata(null);
}
public ColumnDefinition readMetadata(Consumer noticeConsumer) {
try {
List notices;
List fromServer = new LinkedList<>();
do { // use this construct to read at least one
XMessage mess = this.reader.readMessage(null, ServerMessages.Type.RESULTSET_COLUMN_META_DATA_VALUE);
if (noticeConsumer != null && (notices = mess.getNotices()) != null) {
notices.stream().forEach(noticeConsumer::accept);
}
fromServer.add((ColumnMetaData) mess.getMessage());
} while (((SyncMessageReader) this.reader).getNextNonNoticeMessageType() == ServerMessages.Type.RESULTSET_COLUMN_META_DATA_VALUE);
ArrayList metadata = new ArrayList<>(fromServer.size());
@SuppressWarnings("unchecked")
ProtocolEntityFactory fieldFactory = (ProtocolEntityFactory) this.messageToProtocolEntityFactory
.get(ColumnMetaData.class);
fromServer.forEach(col -> metadata.add(fieldFactory.createFromMessage(new XMessage(col))));
return new DefaultColumnDefinition(metadata.toArray(new Field[] {}));
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
public ColumnDefinition readMetadata(Field f, Consumer noticeConsumer) {
try {
List notices;
List fromServer = new LinkedList<>();
while (((SyncMessageReader) this.reader).getNextNonNoticeMessageType() == ServerMessages.Type.RESULTSET_COLUMN_META_DATA_VALUE) { // use this construct to read at least one
XMessage mess = this.reader.readMessage(null, ServerMessages.Type.RESULTSET_COLUMN_META_DATA_VALUE);
if (noticeConsumer != null && (notices = mess.getNotices()) != null) {
notices.stream().forEach(noticeConsumer::accept);
}
fromServer.add((ColumnMetaData) mess.getMessage());
}
ArrayList metadata = new ArrayList<>(fromServer.size());
metadata.add(f);
@SuppressWarnings("unchecked")
ProtocolEntityFactory fieldFactory = (ProtocolEntityFactory) this.messageToProtocolEntityFactory
.get(ColumnMetaData.class);
fromServer.forEach(col -> metadata.add(fieldFactory.createFromMessage(new XMessage(col))));
return new DefaultColumnDefinition(metadata.toArray(new Field[] {}));
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
public XProtocolRow readRowOrNull(ColumnDefinition metadata, Consumer noticeConsumer) {
try {
List notices;
if (((SyncMessageReader) this.reader).getNextNonNoticeMessageType() == ServerMessages.Type.RESULTSET_ROW_VALUE) {
XMessage mess = this.reader.readMessage(null, ServerMessages.Type.RESULTSET_ROW_VALUE);
if (noticeConsumer != null && (notices = mess.getNotices()) != null) {
notices.stream().forEach(noticeConsumer::accept);
}
XProtocolRow res = new XProtocolRow((Row) mess.getMessage());
res.setMetadata(metadata);
return res;
}
return null;
} catch (XProtocolError e) {
this.currentResultStreamer = null;
throw e;
} catch (IOException e) {
this.currentResultStreamer = null;
throw new XProtocolError(e.getMessage(), e);
}
}
/**
* Checks if the MySQL server currently connected supports prepared statements.
*
* @return
* {@code true} if the MySQL server currently connected supports prepared statements.
*/
public boolean supportsPreparedStatements() {
return this.supportsPreparedStatements;
}
/**
* Checks if enough statements have been executed in this MySQL server so that another prepare statement attempt should be done.
*
* @return
* {@code true} if enough executions have been done since last time a prepared statement failed to prepare
*/
public boolean readyForPreparingStatements() {
if (this.retryPrepareStatementCountdown == 0) {
return true;
}
this.retryPrepareStatementCountdown--;
return false;
}
/**
* Returns an id to be used as a client-managed prepared statement id. The method {@link #freePreparedStatementId(int)} must be called when the prepared
* statement is deallocated so that the same id can be re-used.
*
* @param preparableStatement
* {@link PreparableStatement}
*
* @return a new identifier to be used as prepared statement id
*/
public int getNewPreparedStatementId(PreparableStatement preparableStatement) {
if (!this.supportsPreparedStatements) {
throw new XProtocolError("The connected MySQL server does not support prepared statements.");
}
int preparedStatementId = this.preparedStatementIds.allocateSequentialId();
this.preparableStatementFinalizerReferences.put(preparedStatementId,
new PreparableStatementFinalizer(preparableStatement, this.preparableStatementRefQueue, preparedStatementId));
return preparedStatementId;
}
/**
* Frees a prepared statement id so that it can be reused. Note that freeing an id from an active prepared statement will result in a statement prepare
* conflict next time one gets prepared with the same released id.
*
* @param preparedStatementId
* the prepared statement id to release
*/
public void freePreparedStatementId(int preparedStatementId) {
if (!this.supportsPreparedStatements) {
throw new XProtocolError("The connected MySQL server does not support prepared statements.");
}
this.preparedStatementIds.releaseSequentialId(preparedStatementId);
this.preparableStatementFinalizerReferences.remove(preparedStatementId);
}
/**
* Informs this protocol instance that preparing a statement on the connected server failed.
*
* @param preparedStatementId
* the id of the prepared statement that failed to prepare
* @param e
* {@link XProtocolError}
* @return
* {@code true} if the exception was properly handled
*/
public boolean failedPreparingStatement(int preparedStatementId, XProtocolError e) {
freePreparedStatementId(preparedStatementId);
if (e.getErrorCode() == MysqlErrorNumbers.ER_MAX_PREPARED_STMT_COUNT_REACHED) {
this.retryPrepareStatementCountdown = RETRY_PREPARE_STATEMENT_COUNTDOWN;
return true;
}
if (e.getErrorCode() == MysqlErrorNumbers.ER_UNKNOWN_COM_ERROR && this.preparableStatementFinalizerReferences.isEmpty()) {
// The server doesn't recognize the protocol message, so it doesn't support prepared statements.
this.supportsPreparedStatements = false;
this.retryPrepareStatementCountdown = 0;
this.preparedStatementIds = null;
this.preparableStatementRefQueue = null;
this.preparableStatementFinalizerReferences = null;
return true;
}
return false;
}
/**
* Signal the intent to start processing a new command. A session supports processing a single command at a time. Results are read lazily from the
* wire. It is necessary to flush any pending result before starting a new command. This method performs the flush if necessary.
*/
protected void newCommand() {
if (this.currentResultStreamer != null) {
try {
this.currentResultStreamer.finishStreaming();
} finally {
// so we don't call finishStreaming() again if there's an exception
this.currentResultStreamer = null;
}
}
// Before continuing clean up any abandoned prepared statements that were not properly deallocated.
if (this.supportsPreparedStatements) {
Reference> ref;
while ((ref = this.preparableStatementRefQueue.poll()) != null) {
PreparableStatementFinalizer psf = (PreparableStatementFinalizer) ref;
psf.clear();
try {
this.sender.send(((XMessageBuilder) this.messageBuilder).buildPrepareDeallocate(psf.getPreparedStatementId()));
readQueryResult(new OkBuilder());
} catch (XProtocolError e) {
if (e.getErrorCode() != MysqlErrorNumbers.ER_X_BAD_STATEMENT_ID) {
throw e;
} // Else ignore exception, the Statement may have been deallocated elsewhere.
} finally {
freePreparedStatementId(psf.getPreparedStatementId());
}
}
}
}
public R query(M message, ResultBuilder resultBuilder) {
send(message, 0);
R res = readQueryResult(resultBuilder);
if (ResultStreamer.class.isAssignableFrom(res.getClass())) {
this.currentResultStreamer = (ResultStreamer) res;
}
return res;
}
public CompletableFuture queryAsync(M message, ResultBuilder resultBuilder) {
newCommand();
CompletableFuture f = new CompletableFuture<>();
MessageListener l = new ResultMessageListener<>(this.messageToProtocolEntityFactory, resultBuilder, f);
this.sender.send((XMessage) message, f, () -> this.reader.pushMessageListener(l));
return f;
}
public boolean isOpen() {
return this.managedResource != null;
}
public void close() throws IOException {
try {
send(this.messageBuilder.buildClose(), 0);
readQueryResult(new OkBuilder());
} catch (Exception e) {
// ignore exceptions
} finally {
try {
if (this.managedResource == null) {
throw new ConnectionIsClosedException();
}
this.managedResource.close();
this.managedResource = null;
} catch (IOException ex) {
throw new CJCommunicationsException(ex);
}
}
}
public boolean isSqlResultPending() {
try {
switch (((SyncMessageReader) this.reader).getNextNonNoticeMessageType()) {
case ServerMessages.Type.RESULTSET_COLUMN_META_DATA_VALUE:
return true;
case ServerMessages.Type.RESULTSET_FETCH_DONE_MORE_RESULTSETS_VALUE:
this.reader.readMessage(null, ServerMessages.Type.RESULTSET_FETCH_DONE_MORE_RESULTSETS_VALUE);
break;
default:
break;
}
return false;
} catch (IOException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
public void setMaxAllowedPacket(int maxAllowedPacket) {
this.sender.setMaxAllowedPacket(maxAllowedPacket);
}
@Override
public void send(Message message, int packetLen) {
newCommand();
this.sender.send((XMessage) message);
}
/**
* Get the capabilities from the server.
*
* NOTE: This must be called before authentication.
*
* @return capabilities mapped by name
*/
public ServerCapabilities readServerCapabilities() {
try {
this.sender.send(((XMessageBuilder) this.messageBuilder).buildCapabilitiesGet());
return new XServerCapabilities(((Capabilities) this.reader.readMessage(null, ServerMessages.Type.CONN_CAPABILITIES_VALUE).getMessage())
.getCapabilitiesList().stream().collect(toMap(Capability::getName, Capability::getValue)));
} catch (IOException | AssertionFailedException e) {
throw new XProtocolError(e.getMessage(), e);
}
}
@Override
public void reset() {
newCommand();
this.propertySet.reset();
if (this.useSessionResetKeepOpen == null) {
try {
send(((XMessageBuilder) this.messageBuilder).buildExpectOpen(), 0);
readQueryResult(new OkBuilder());
this.useSessionResetKeepOpen = true;
} catch (XProtocolError e) {
if (e.getErrorCode() != MysqlErrorNumbers.ER_X_EXPECT_FIELD_EXISTS_FAILED
&& /* for MySQL 5.7 */ e.getErrorCode() != MysqlErrorNumbers.ER_X_EXPECT_BAD_CONDITION) {
throw e;
}
this.useSessionResetKeepOpen = false;
}
}
if (this.useSessionResetKeepOpen) {
send(((XMessageBuilder) this.messageBuilder).buildSessionResetKeepOpen(), 0);
readQueryResult(new OkBuilder());
} else {
send(((XMessageBuilder) this.messageBuilder).buildSessionResetAndClose(), 0);
readQueryResult(new OkBuilder());
if (this.clientCapabilities.containsKey(XServerCapabilities.KEY_SESSION_CONNECT_ATTRS)) {
// this code may never work because xplugin connection attributes were introduced later than new session reset
Map reducedClientCapabilities = new HashMap<>();
reducedClientCapabilities.put(XServerCapabilities.KEY_SESSION_CONNECT_ATTRS,
this.clientCapabilities.get(XServerCapabilities.KEY_SESSION_CONNECT_ATTRS));
if (reducedClientCapabilities.size() > 0) {
sendCapabilities(reducedClientCapabilities);
}
}
this.authProvider.changeUser(this.currUser, this.currPassword, this.currDatabase);
}
// No prepared statements survived to Mysqlx.Session.Reset. Reset all related control structures.
if (this.supportsPreparedStatements) {
this.retryPrepareStatementCountdown = 0;
this.preparedStatementIds = new SequentialIdLease();
this.preparableStatementRefQueue = new ReferenceQueue<>();
this.preparableStatementFinalizerReferences = new TreeMap<>();
}
}
@Override
public ExceptionInterceptor getExceptionInterceptor() {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
public void changeDatabase(String database) {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
// TODO: Figure out how this is relevant for X Protocol client Session
}
public boolean versionMeetsMinimum(int major, int minor, int subminor) {
//TODO: expose this via ServerVersion so calls look like x.getServerVersion().meetsMinimum(major, minor, subminor)
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public XMessage readMessage(XMessage reuse) {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public XMessage checkErrorMessage() {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public XMessage sendCommand(Message queryPacket, boolean skipCheck, int timeoutMillis) {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public T read(Class requiredClass, ProtocolEntityFactory protocolEntityFactory) throws IOException {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public T read(Class requiredClass, int maxRows, boolean streamResults, XMessage resultPacket, boolean isBinaryEncoded,
ColumnDefinition metadata, ProtocolEntityFactory protocolEntityFactory) throws IOException {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public void setLocalInfileInputStream(InputStream stream) {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public InputStream getLocalInfileInputStream() {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public String getQueryComment() {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public void setQueryComment(String comment) {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
@Override
public Supplier getValueEncoderSupplier(Object obj) {
throw ExceptionFactory.createException(CJOperationNotSupportedException.class, "Not supported");
}
}
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