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/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* 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. See accompanying
* LICENSE file.
*/
package com.pivotal.gemfirexd.callbacks;
import java.math.BigDecimal;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Formatter;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.gemstone.gemfire.internal.shared.ClientSharedUtils;
import com.pivotal.gemfirexd.internal.engine.distributed.utils.GemFireXDUtils;
import com.pivotal.gemfirexd.internal.engine.jdbc.GemFireXDRuntimeException;
import com.pivotal.gemfirexd.internal.iapi.reference.JDBC40Translation;
import com.pivotal.gemfirexd.internal.shared.common.reference.SQLState;
import com.pivotal.gemfirexd.internal.shared.common.sanity.SanityManager;
/**
* Some utility methods for {@link AsyncEventListener} and WAN. Note that since
* this is also used by the GemFireXD WAN layer, users should not change this
* class, rather should extend it and then modify for custom changes to
* {@link DBSynchronizer}.
*/
public class AsyncEventHelper {
/** the name of the {@link Logger} used by GemFireXD */
public static final String LOGGER_NAME = ClientSharedUtils.LOGGER_NAME;
/** prefix for SQLStates of integrity violations */
public static final String INTEGRITY_VIOLATION_PREFIX =
SQLState.INTEGRITY_VIOLATION_PREFIX;
/** prefix for SQLStates of connection exceptions */
public static final String CONNECTIVITY_PREFIX =
SQLState.CONNECTIVITY_PREFIX;
/** prefix for SQLStates of syntax and other errors during query prepare */
public static final String LSE_COMPILATION_PREFIX =
SQLState.LSE_COMPILATION_PREFIX;
/** the maximum size of BLOBs that will be kept in memory */
static final int MAX_MEM_BLOB_SIZE = 128 * 1024 * 1024;
/** the maximum size of CLOBs that will be kept in memory */
static final int MAX_MEM_CLOB_SIZE = (MAX_MEM_BLOB_SIZE >>> 1);
/**
* When an event fails, then this keeps the last time when a failure was
* logged. We don't want to swamp the logs in retries due to a syntax error,
* for example, but we don't want to remove it from the retry map either lest
* all subsequent dependent DMLs may start failing.
*/
private final ConcurrentHashMap failureLogInterval =
new ConcurrentHashMap(16, 0.75f, 2);
/**
* The maximum size of {@link #failureLogInterval} beyond which it will start
* logging all failure instances. Hopefully this should never happen in
* practise.
*/
protected static final int FAILURE_MAP_MAXSIZE = Integer.getInteger(
"gemfirexd.asyncevent.FAILURE_MAP_MAXSIZE", 1000000);
/**
* The maximum interval for logging failures of the same event in millis.
*/
protected static final int FAILURE_LOG_MAX_INTERVAL = Integer.getInteger(
"gemfirexd.asyncevent.FAILURE_LOG_MAX_INTERVAL", 300000);
public static final boolean POSTGRESQL_SYNTAX = Boolean.getBoolean(
"gemfirexd.asyncevent.POSTGRESQL_SYNTAX");
public static final String EVENT_ERROR_LOG_FILE = "dbsync_failed_dmls.xml";
public static final String EVENT_ERROR_LOG_ENTRIES_FILE = "dbsync_failed_dmls_entries.xml";
private EventErrorLogger evErrorLogger;
public static AsyncEventHelper newInstance() {
return new AsyncEventHelper();
}
/**
* Append the backtrace of given exception to provided {@link StringBuilder}.
*
* @param t
* the exception whose backtrace is required
* @param sb
* the {@link StringBuilder} to which the stack trace is to be
* appended
*/
public final void getStackTrace(Throwable t, StringBuilder sb) {
ClientSharedUtils.getStackTrace(t, sb, null);
}
/**
* Returns true if fine-level logging is enabled in this GemFireXD instance.
*/
public final boolean logFineEnabled() {
return SanityManager.isFineEnabled;
}
/**
* Returns true if minimal execution tracing is enabled in this GemFireXD
* instance.
*/
public final boolean traceExecute() {
return GemFireXDUtils.TraceExecute;
}
/**
* Returns true if "TraceDBSynchronizer" debug flag is enabled in this GemFireXD
* instance (via gemfirexd.debug.true=TraceDBSynchronizer).
*/
public final boolean traceDBSynchronizer() {
return GemFireXDUtils.TraceDBSynchronizer;
}
/**
* Returns true if "TraceDBSynchronizerHA" debug flag is enabled in this GemFireXD
* instance (via gemfirexd.debug.true=TraceDBSynchronizerHA).
*/
public final boolean traceDBSynchronizerHA() {
return GemFireXDUtils.TraceDBSynchronizerHA;
}
/**
* Log the given message and exception to the provided logger.
*
* @param logger
* the {@link Logger} to log the message to
* @param level
* the {@link Level} to use for logging the message
* @param t
* the exception whose backtrace is to be logged; can be null in
* which case it is ignored
* @param message
* the message to be logged
*/
public final void log(Logger logger, Level level, Throwable t,
final String message) {
if (t != null) {
StringBuilder sb = new StringBuilder();
sb.append(message).append(": ");
getStackTrace(t, sb);
logger.log(level, sb.toString());
}
else {
logger.log(level, message);
}
}
/**
* Log the given formatted message and exception to the provided logger. The
* format expected is the same as supported by
* {@link String#format(String, Object...)}.
*
* @param logger
* the {@link Logger} to log the message to
* @param level
* the {@link Level} to use for logging the message
* @param t
* the exception whose backtrace is to be logged; can be null in
* which case it is ignored
* @param format
* the message format
* @param params
* the parameters to the message format
*
* @see String#format(String, Object...)
* @see Formatter#format(String, Object...)
*/
public final void logFormat(Logger logger, Level level, Throwable t,
String format, Object... params) {
StringBuilder sb = new StringBuilder();
Formatter fmt = new Formatter(sb);
fmt.format(format, params);
if (t != null) {
sb.append(": ");
getStackTrace(t, sb);
}
logger.log(level, sb.toString());
fmt.close();
}
/**
* Get a DML string that can be used to insert rows in given table. Any
* auto-increment columns are skipped from the insert statement assuming that
* they have to be re-generated by the backend database.
*
* @param tableName
* name of the table
* @param tableMetaData
* meta-data of the columns of the table
* @param hasAutoIncrementColumns
* should be true if table has any auto-increment columns and those
* are to be skipped in the insert string
*
* @throws SQLException
* in case of an error in getting column information from table
* meta-data
*/
public static final String getInsertString(String tableName,
TableMetaData tableMetaData, boolean hasAutoIncrementColumns)
throws SQLException {
// skip identity columns, if any
StringBuilder sbuff = new StringBuilder().append("insert into ");
// remove quotes from tableName
if (POSTGRESQL_SYNTAX) {
String unQuotedTableName = tableName.replace("\"", "");
sbuff.append(unQuotedTableName);
} else {
sbuff.append(tableName);
}
final int numColumns = tableMetaData.getColumnCount();
// need to specify only the non-autogen column names
sbuff.append('(');
for (int pos = 1; pos <= numColumns; pos++) {
if (!hasAutoIncrementColumns || !tableMetaData.isAutoIncrement(pos)) {
sbuff.append(tableMetaData.getColumnName(pos)).append(',');
}
}
sbuff.setCharAt(sbuff.length() - 1, ')');
sbuff.append(" values (");
for (int pos = 1; pos <= numColumns; pos++) {
if (!hasAutoIncrementColumns || !tableMetaData.isAutoIncrement(pos)) {
sbuff.append("?,");
}
}
sbuff.setCharAt(sbuff.length() - 1, ')');
return sbuff.toString();
}
/**
* Get a DML string that can be used to delete rows in given table. Caller
* needs to pass the primary-key column information as a
* {@link ResultSetMetaData} obtained from
* {@link Event#getPrimaryKeysAsResultSet()}.
*
* @param tableName
* name of the table
* @param pkMetaData
* meta-data of the primary key columns of the table
*
* @throws SQLException
* in case of an error in getting column information from primary
* key meta-data
*/
public static final String getDeleteString(String tableName,
ResultSetMetaData pkMetaData) throws SQLException {
StringBuilder sbuff = new StringBuilder().append("delete from ");
// remove quotes from tableName
if (POSTGRESQL_SYNTAX) {
String unQuotedTableName = tableName.replace("\"", "");
sbuff.append(unQuotedTableName);
} else {
sbuff.append(tableName);
}
sbuff.append(" where ");
// use the primary key columns to fire the delete on backend DB;
// tables having no primary keys are received as BULK_DML statements
// and will not reach here
final int numCols = pkMetaData.getColumnCount();
for (int col = 1; col < numCols; col++) {
sbuff.append(pkMetaData.getColumnName(col));
sbuff.append("=? and ");
}
sbuff.append(pkMetaData.getColumnName(numCols));
sbuff.append("=?");
return sbuff.toString();
}
/**
* Get a DML string that can be used to update rows in given table. Caller
* needs to pass the primary-key column information as a
* {@link ResultSetMetaData} obtained from
* {@link Event#getPrimaryKeysAsResultSet()}, and the meta-data of updated
* columns as a {@link ResultSetMetaData} obtained from
* {@link Event#getNewRowsAsResultSet()}.
*
* @param tableName
* name of the table
* @param pkMetaData
* meta-data of the primary key columns of the table
* @param updateMetaData
* meta-data of the updated columns of the table
*
* @throws SQLException
* in case of an error in getting column information from primary
* key meta-data, or from meta-data of updated columns
*/
public static final String getUpdateString(String tableName,
ResultSetMetaData pkMetaData, ResultSetMetaData updateMetaData)
throws SQLException {
StringBuilder sbuff = new StringBuilder().append("update ");
// remove quotes from tableName
if (POSTGRESQL_SYNTAX) {
String unQuotedTableName = tableName.replace("\"", "");
sbuff.append(unQuotedTableName);
} else {
sbuff.append(tableName);
}
sbuff.append(" set ");
final int numPkCols = pkMetaData.getColumnCount();
for (int col = 1; col <= updateMetaData.getColumnCount(); col++) {
sbuff.append(updateMetaData.getColumnName(col));
sbuff.append("=?,");
}
sbuff.setCharAt(sbuff.length() - 1, ' ');
sbuff.append("where ");
for (int col = 1; col < numPkCols; col++) {
sbuff.append(pkMetaData.getColumnName(col));
sbuff.append("=? and ");
}
sbuff.append(pkMetaData.getColumnName(numPkCols));
sbuff.append("=?");
return sbuff.toString();
}
/**
* Set the parameters to the prepared statement for a
* {@link Event.Type#BULK_DML} or {@link Event.Type#BULK_INSERT} operation.
* The implementation creates a batch for {@link Event.Type#BULK_INSERT} and
* also tries to add as a batch for {@link Event.Type#BULK_DML} in case the
* previous prepared statement is same as this one.
*
* @param event
* the {@link Event} object
* @param evType
* the {@link Event.Type} of the event
* @param ps
* the prepared statement to be used for prepare
* @param prevPS
* the prepared statement used for the previous event; in case it is
* same as the current one the new update for a
* {@link Event.Type#BULK_DML} operation will be added as a batch
* @param sync
* the {@link DBSynchronizer} object, if any; it is used to store
* whether the current driver is JDBC4 compliant to enable performing
* BLOB/CLOB operations {@link PreparedStatement#setBinaryStream},
* {@link PreparedStatement#setCharacterStream}
*
* @return true if the event was {@link Event.Type#BULK_INSERT} and false
* otherwise
*
* @throws SQLException
* in case of an exception in getting meta-data or setting
* parameters
*/
public final boolean setParamsInBulkPreparedStatement(Event event,
Event.Type evType, PreparedStatement ps, PreparedStatement prevPS,
DBSynchronizer sync) throws SQLException {
if (evType.isBulkInsert()) {
// need to deserialize individual rows and execute as batch prepared
// statement
final ResultSetMetaData rsmd = event.getResultSetMetaData();
final int numColumns = rsmd.getColumnCount();
final ResultSet rows = event.getNewRowsAsResultSet();
// prepared statement will already be set correctly to skip auto-increment
// columns assuming getInsertString was used to get the SQL string
final boolean skipAutoGenCols = (event.tableHasAutogeneratedColumns()
&& (sync == null || sync.skipIdentityColumns()));
while (rows.next()) {
int paramIndex = 1;
for (int rowPos = 1; rowPos <= numColumns; rowPos++) {
if (!skipAutoGenCols || !rsmd.isAutoIncrement(rowPos)) {
setColumnInPrepStatement(rsmd.getColumnType(rowPos), ps, rows,
rowPos, paramIndex, sync);
paramIndex++;
}
}
ps.addBatch();
}
return true;
}
else {
if (prevPS == ps) {
// add a new batch of values
ps.addBatch();
}
final ResultSet params = event.getNewRowsAsResultSet();
final ResultSetMetaData rsmd;
final int columnCount;
if (params != null
&& (columnCount = (rsmd = params.getMetaData()).getColumnCount()) > 0) {
for (int paramIndex = 1; paramIndex <= columnCount; paramIndex++) {
setColumnInPrepStatement(rsmd.getColumnType(paramIndex), ps, params,
paramIndex, paramIndex, sync);
}
}
return false;
}
}
/**
* Set column value at given index in a prepared statement. The implementation
* tries using the matching underlying type to minimize any data type
* conversions, and avoid creating wrapper Java objects (e.g. {@link Integer}
* for primitive int).
*
* @param javaSqlType
* the SQL type of the column as specified by JDBC {@link Types}
* class
* @param ps
* the prepared statement where the column value has to be set
* @param row
* the source row as a {@link ResultSet} from where the value has to
* be extracted
* @param rowPosition
* the 1-based position of the column in the provided
* row
* @param paramIndex
* the 1-based position of the column in the target prepared
* statement (provided ps argument)
* @param sync
* the {@link DBSynchronizer} object, if any; it is used to store
* whether the current driver is JDBC4 compliant to enable performing
* BLOB/CLOB operations {@link PreparedStatement#setBinaryStream},
* {@link PreparedStatement#setCharacterStream}
*
* @throws SQLException
* in case of an exception in setting parameters
*/
public final void setColumnInPrepStatement(int javaSqlType,
PreparedStatement ps, ResultSet row, int rowPosition, int paramIndex,
final DBSynchronizer sync) throws SQLException {
if (traceDBSynchronizer()) {
final Logger logger = sync != null ? sync.logger : Logger
.getLogger(LOGGER_NAME);
logger.info("AsyncEventHelper::setColumnInPrepStatement: setting column "
+ "type=" + javaSqlType + " index=" + paramIndex + " value="
+ row.getObject(rowPosition) + ", for " + ps);
}
switch (javaSqlType) {
case Types.ARRAY:
case Types.DATALINK:
case Types.DISTINCT:
case Types.NCHAR:
case Types.NCLOB:
case Types.NULL:
case Types.NVARCHAR:
case Types.OTHER:
case Types.REF:
case Types.ROWID:
case Types.STRUCT:
throw new UnsupportedOperationException("java.sql.Type = "
+ javaSqlType + " not supported");
case Types.BIGINT:
final long longVal = row.getLong(rowPosition);
if (!row.wasNull()) {
ps.setLong(paramIndex, longVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.BIT:
case Types.BOOLEAN:
final boolean boolVal = row.getBoolean(rowPosition);
if (!row.wasNull()) {
ps.setBoolean(paramIndex, boolVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.BLOB:
final Blob blob = row.getBlob(rowPosition);
final long blen;
if (blob != null) {
if (sync == null) {
ps.setBlob(paramIndex, blob);
break;
}
else if ((blen = blob.length()) > MAX_MEM_BLOB_SIZE) {
final byte isJDBC4Driver = sync.isJDBC4Driver();
if (isJDBC4Driver == DBSynchronizer.JDBC4DRIVER_TRUE) {
// The Oracle driver does not work with ps.setBlob
// where it expects an Oracle Blob type
ps.setBinaryStream(paramIndex, blob.getBinaryStream());
break;
}
else if (isJDBC4Driver == DBSynchronizer.JDBC4DRIVER_UNKNOWN) {
try {
ps.setBinaryStream(paramIndex, blob.getBinaryStream(), blen);
sync.setJDBC4Driver(DBSynchronizer.JDBC4DRIVER_TRUE);
break;
} catch (java.sql.SQLFeatureNotSupportedException e) {
} catch (java.lang.AbstractMethodError e) {
}
sync.setJDBC4Driver(DBSynchronizer.JDBC4DRIVER_FALSE);
}
}
// For small/medium Blobs and drivers which do not support
// ps.setBinaryStream
final byte[] bytes = blob.getBytes(1, (int)blen);
ps.setBytes(paramIndex, bytes);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.CLOB:
final Object clobVal = row.getObject(rowPosition);
if (clobVal != null) {
if (clobVal instanceof String) {
// Ideally this should not be of type String
ps.setString(paramIndex, (String)clobVal);
}
else {
final Clob clob = (Clob)clobVal;
final long len;
if (sync == null) {
ps.setClob(paramIndex, clob);
break;
}
else if ((len = clob.length()) > MAX_MEM_CLOB_SIZE) {
final byte isJDBC4Driver = sync.isJDBC4Driver();
if (isJDBC4Driver == DBSynchronizer.JDBC4DRIVER_TRUE) {
// The Oracle driver does not work with ps.setClob
// where it expects an Oracle Clob type
ps.setCharacterStream(paramIndex, clob.getCharacterStream());
break;
}
else if (isJDBC4Driver == DBSynchronizer.JDBC4DRIVER_UNKNOWN) {
try {
ps.setCharacterStream(paramIndex, clob.getCharacterStream(),
len);
sync.setJDBC4Driver(DBSynchronizer.JDBC4DRIVER_TRUE);
break;
} catch (java.sql.SQLFeatureNotSupportedException e) {
} catch (java.lang.AbstractMethodError e) {
}
sync.setJDBC4Driver(DBSynchronizer.JDBC4DRIVER_FALSE);
}
}
// For small/medium Clobs and drivers which do not support
// ps.setCharacterStream
final String str = clob.getSubString(1, (int)len);
ps.setString(paramIndex, str);
}
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.DATE:
final java.sql.Date dateVal = row.getDate(rowPosition);
if (dateVal != null) {
ps.setDate(paramIndex, dateVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.DECIMAL:
case Types.NUMERIC:
final BigDecimal decimalVal = row.getBigDecimal(rowPosition);
if (decimalVal != null) {
ps.setBigDecimal(paramIndex, decimalVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.DOUBLE:
final double doubleVal = row.getDouble(rowPosition);
if (!row.wasNull()) {
ps.setDouble(paramIndex, doubleVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.FLOAT:
case Types.REAL:
final float floatVal = row.getFloat(rowPosition);
if (!row.wasNull()) {
ps.setFloat(paramIndex, floatVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.INTEGER:
case Types.SMALLINT:
case Types.TINYINT:
final int intVal = row.getInt(rowPosition);
if (!row.wasNull()) {
ps.setInt(paramIndex, intVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.LONGNVARCHAR:
case Types.LONGVARCHAR:
case Types.VARCHAR:
case Types.CHAR:
case Types.SQLXML:
final String strVal = row.getString(rowPosition);
if (strVal != null) {
ps.setString(paramIndex, strVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case JDBC40Translation.JSON:
final String strVal2 = row.getString(rowPosition);
ps.setString(paramIndex, strVal2);
break;
case Types.BINARY:
case Types.LONGVARBINARY:
case Types.VARBINARY:
final byte[] bytesVal = row.getBytes(rowPosition);
if (bytesVal != null) {
ps.setBytes(paramIndex, bytesVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.TIME:
final java.sql.Time timeVal = row.getTime(rowPosition);
if (timeVal != null) {
ps.setTime(paramIndex, timeVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.TIMESTAMP:
final java.sql.Timestamp timestampVal = row.getTimestamp(rowPosition);
if (timestampVal != null) {
ps.setTimestamp(paramIndex, timestampVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
case Types.JAVA_OBJECT:
final Object objVal = row.getObject(rowPosition);
if (objVal != null) {
ps.setObject(paramIndex, objVal);
}
else {
ps.setNull(paramIndex, javaSqlType);
}
break;
default:
throw new UnsupportedOperationException("java.sql.Type = "
+ javaSqlType + " not supported");
}
}
/**
* Check if logging for the same event repeatedly has to be skipped. This
* keeps a map of failed event against the last logged time and doubles the
* time interval to wait before next logging on every subsequent call for the
* same event.
*/
public final boolean skipFailureLogging(Event event) {
boolean skipLogging = false;
// if map has become large then give up on new events but we don't expect
// it to become too large in practise
if (this.failureLogInterval.size() < FAILURE_MAP_MAXSIZE) {
// first long in logInterval gives the last time when the log was done,
// and the second tracks the current log interval to be used which
// increases exponentially
// multiple currentTimeMillis calls below may hinder performance
// but not much to worry about since failures are expected to
// be an infrequent occurance (and if frequent then we have to skip
// logging for quite a while in any case)
long[] logInterval = this.failureLogInterval.get(event);
if (logInterval == null) {
logInterval = this.failureLogInterval.putIfAbsent(event,
new long[] { System.currentTimeMillis(), 1000 });
}
if (logInterval != null) {
long currentTime = System.currentTimeMillis();
if ((currentTime - logInterval[0]) < logInterval[1]) {
skipLogging = true;
}
else {
logInterval[0] = currentTime;
// don't increase logInterval to beyond a limit (5 mins by default)
if (logInterval[1] <= (FAILURE_LOG_MAX_INTERVAL / 4)) {
logInterval[1] *= 4;
}
// TODO: should the retries be throttled by some sleep here?
}
}
}
return skipLogging;
}
/**
* After a successful event execution remove from failure map if present (i.e.
* if the event had failed on a previous try).
*/
public final boolean removeEventFromFailureMap(Event event) {
return this.failureLogInterval.remove(event) != null;
}
/**
* Return true if failure map has entries.
*/
public final boolean hasFailures() {
return this.failureLogInterval.size() > 0;
}
/**
* Encrypt the password of a given user for storage in file or memory.
*
* @param user
* the name of user
* @param password
* the password to be encrypted
* @param transformation
* the algorithm to use for encryption e.g. AES/ECB/PKCS5Padding or
* Blowfish (e.g. see Sun Providers for the available names in Oracle's Sun JDK}
* @param keySize
* the size of the private key of the given "transformation" to use
*/
public static final String encryptPassword(String user, String password,
String transformation, int keySize) throws Exception {
return GemFireXDUtils.encrypt(password, transformation, GemFireXDUtils
.getUserPasswordCipherKeyBytes(user, transformation, keySize));
}
/**
* Decrypt the password of a given user encrypted using
* {@link #encryptPassword(String, String, String, int)}.
*
* @param user
* the name of user
* @param encPassword
* the encrypted password to be decrypted
* @param transformation
* the algorithm to use for encryption e.g. AES/ECB/PKCS5Padding or
* Blowfish (e.g. see Sun Providers for the available names in Oracle's Sun JDK}
* @param keySize
* the size of the private key of the given "transformation" to use
*/
public static final String decryptPassword(String user, String encPassword,
String transformation, int keySize) throws Exception {
return GemFireXDUtils.decrypt(encPassword, transformation, GemFireXDUtils
.getUserPasswordCipherKeyBytes(user, transformation, keySize));
}
/**
* Any cleanup required when closing.
*/
public void close() {
this.failureLogInterval.clear();
}
/**
* Return a new GemFireXD runtime exception to wrap an underlying exception with
* optional message detail. When an external exception is received in a
* callback, using this method to wrap it is recommended for GemFireXD engine to
* deal with it cleanly.
*
* @param message
* the detail message of the exception
* @param t
* the underlying exception to be wrapped
*/
public RuntimeException newRuntimeException(String message, Throwable t) {
return GemFireXDRuntimeException.newRuntimeException(message, t);
}
public void createEventErrorLogger(String errorFileName) {
// Use the default if not provided
if (errorFileName == null) {
errorFileName = EVENT_ERROR_LOG_FILE;
}
evErrorLogger = new EventErrorLogger(errorFileName);
}
public void logEventError(Event ev, Exception e) throws Exception {
if (evErrorLogger == null) {
throw new Exception("Event Error Logger not created");
}
evErrorLogger.logError(ev, e);
}
}
