/**************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package com.espertech.esperio.db;
import com.espertech.esper.client.ConfigurationException;
import com.espertech.esper.client.EPServiceProviderManager;
import com.espertech.esper.client.EventPropertyGetter;
import com.espertech.esper.client.EventType;
import com.espertech.esper.core.EPServiceProviderSPI;
import com.espertech.esper.epl.db.DatabaseConfigServiceImpl;
import com.espertech.esper.epl.db.DatabaseConnectionFactory;
import com.espertech.esper.util.SQLTypeMapUtil;
import com.espertech.esperio.db.config.*;
import com.espertech.esperio.db.core.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
public class EsperIODBAdapter
{
private static Log log = LogFactory.getLog(EsperIODBAdapter.class);
private final ConfigurationDBAdapter config;
private final String engineURI;
private DatabaseConfigServiceImpl databaseConfigSvc;
private ExecutorServices executorFactory;
/**
* Quickstart constructor.
* @param config configuration
*/
public EsperIODBAdapter(ConfigurationDBAdapter config, String engineURI)
{
this.config = config;
this.engineURI = engineURI;
}
/**
* Re-initialize DDS endpoint.
*/
public void initialize()
{
}
/**
* Start the DDS endpoint.
*/
public synchronized void start()
{
if (log.isInfoEnabled())
{
log.info("Starting EsperIO DB Adapter for engine URI '" + engineURI + "'");
}
EPServiceProviderSPI engineSPI = (EPServiceProviderSPI) EPServiceProviderManager.getProvider(engineURI);
databaseConfigSvc = new DatabaseConfigServiceImpl(config.getJdbcConnections(), null, null);
executorFactory = new ExecutorServices(engineSPI, config.getExecutors());
// Handle Upserts
for (UpsertQuery upsert : config.getUpsertQueries()) {
RunnableUpsertFactory upsertFactory = getUpsertFactory(engineSPI, upsert, databaseConfigSvc);
try {
EsperIODBBaseSubscription subs = new EsperIODBBaseSubscription(upsertFactory, executorFactory.getConfiguredExecutor(upsert.getExecutorName()));
subs.seteventTypeName(upsert.getStream());
subs.setSubscriptionName(upsertFactory.getContext().getName());
subs.registerAdapter(engineSPI);
}
catch (Throwable t) {
log.error("Error starting Upsert query '" + upsertFactory.getContext().getName() + "'" + t.getMessage(), t);
}
}
// Handle DML
for (DMLQuery dml : config.getDmlQueries()) {
RunnableDMLFactory dmlFactory = getDMLFactory(engineSPI, dml, databaseConfigSvc);
try {
EsperIODBBaseSubscription subs = new EsperIODBBaseSubscription(dmlFactory, executorFactory.getConfiguredExecutor(dml.getExecutorName()));
subs.seteventTypeName(dml.getStream());
subs.setSubscriptionName(dmlFactory.getContext().getName());
subs.registerAdapter(engineSPI);
}
catch (Throwable t) {
log.error("Error starting DML query '" + dmlFactory.getContext().getName() + "'" + t.getMessage(), t);
}
}
if (log.isInfoEnabled())
{
log.info("Completed starting EsperIO DB Adapter for engine URI '" + engineURI + "'.");
}
}
private RunnableUpsertFactory getUpsertFactory(EPServiceProviderSPI engineSPI, UpsertQuery upsert, DatabaseConfigServiceImpl databaseConfigSvc)
{
String upsertName = upsert.getName();
if (upsertName == null) {
upsertName = "Upsert against table '" + upsert.getTableName() + "'";
}
final String finalUpsertName = upsertName;
EventType eventType = engineSPI.getEventAdapterService().getExistsTypeByName(upsert.getStream());
if (eventType == null) {
throw new ConfigurationException("Event type by name '" + upsert.getStream() + "' not found");
}
try {
DatabaseConnectionFactory connectionFactory = databaseConfigSvc.getConnectionFactory(upsert.getConnection());
String[] keys = new String[upsert.getKeys().size()];
int[] keyTypes = new int[upsert.getKeys().size()];
EventPropertyGetter[] keyGetters = new EventPropertyGetter[upsert.getKeys().size()];
int index = 0;
for (Column key : upsert.getKeys()) {
keys[index] = key.getColumn();
keyTypes[index] = SQLTypeMapUtil.getSQLTypeByName(key.getType());
keyGetters[index] = eventType.getGetter(key.getProperty());
if (keyGetters[index] == null) {
throw new ConfigurationException("Property name '" + key.getProperty() + "' not found for type '" + eventType + "'");
}
index++;
}
String[] values = new String[upsert.getValues().size()];
int[] valueTypes = new int[upsert.getValues().size()];
EventPropertyGetter[] valueGetters = new EventPropertyGetter[upsert.getValues().size()];
index = 0;
for (Column value : upsert.getValues()) {
values[index] = value.getColumn();
valueTypes[index] = SQLTypeMapUtil.getSQLTypeByName(value.getType());
valueGetters[index] = eventType.getGetter(value.getProperty());
if (valueGetters[index] == null) {
throw new ConfigurationException("Property name '" + value.getProperty() + "' not found for type '" + eventType + "'");
}
index++;
}
StoreExceptionHandler handler = new StoreExceptionHandler() {
public void handle(String message, SQLException ex)
{
log.error("Error executing '" + finalUpsertName + "'");
}
};
MultiKeyMultiValueTable table = new MultiKeyMultiValueTable(upsert.getTableName(), keys, keyTypes,
values, valueTypes, handler);
RunnableUpsertContext context = new RunnableUpsertContext(upsertName, connectionFactory, table, keyGetters, valueGetters, upsert.getRetry(), upsert.getRetryIntervalSec());
return new RunnableUpsertFactory(context);
}
catch (ConfigurationException ex) {
throw ex;
}
catch (Throwable t) {
throw new ConfigurationException("Error configuring " + upsertName + " :" + t.getMessage());
}
}
private RunnableDMLFactory getDMLFactory(EPServiceProviderSPI engineSPI, DMLQuery dmlQuery, DatabaseConfigServiceImpl databaseConfigSvc)
{
String dmlName = dmlQuery.getName();
if (dmlName == null) {
dmlName = "DML '" + dmlQuery.getSql();
}
final String finalDmlName = dmlName;
EventType eventType = engineSPI.getEventAdapterService().getExistsTypeByName(dmlQuery.getStream());
if (eventType == null) {
throw new ConfigurationException("Event type by name '" + dmlQuery.getStream() + "' not found");
}
try {
DatabaseConnectionFactory connectionFactory = databaseConfigSvc.getConnectionFactory(dmlQuery.getConnection());
Map<Integer, BindingEntry> bindings = new HashMap<Integer, BindingEntry>();
for (BindingParameter params : dmlQuery.getBindings()) {
EventPropertyGetter valueGetter = eventType.getGetter(params.getPropertyName());
bindings.put(params.getPosition(), new BindingEntry(valueGetter));
}
StoreExceptionHandler handler = new StoreExceptionHandler() {
public void handle(String message, SQLException ex)
{
log.error("Error executing '" + finalDmlName + "'");
}
};
DMLStatement dmlStmt = new DMLStatement(handler, dmlQuery.getSql(), bindings);
RunnableDMLContext context = new RunnableDMLContext(dmlName, connectionFactory, dmlStmt, dmlQuery.getRetry(), dmlQuery.getRetryIntervalSec());
return new RunnableDMLFactory(context);
}
catch (ConfigurationException ex) {
throw ex;
}
catch (Throwable t) {
throw new ConfigurationException("Error configuring " + dmlName + " :" + t.getMessage());
}
}
/**
* Destroy the adapter.
*/
public synchronized void destroy()
{
if (log.isDebugEnabled())
{
log.debug("Destroying Esper DB Adapter");
}
executorFactory.destroy();
}
}