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/*******************************************************************************
* Copyright (c) 2014 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.jdbc.internal.osgi;
import static org.eclipse.osee.jdbc.internal.JdbcUtil.getServiceId;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;
import org.eclipse.osee.framework.jdk.core.util.Strings;
import org.eclipse.osee.jdbc.JdbcClient;
import org.eclipse.osee.jdbc.JdbcClientBuilder;
import org.eclipse.osee.jdbc.JdbcConstants;
import org.eclipse.osee.jdbc.JdbcConstants.JdbcDriverType;
import org.eclipse.osee.jdbc.JdbcLogger;
import org.eclipse.osee.jdbc.JdbcServer;
import org.eclipse.osee.jdbc.JdbcServerBuilder;
import org.eclipse.osee.jdbc.JdbcServerConfig;
import org.eclipse.osee.jdbc.JdbcService;
import org.eclipse.osee.jdbc.internal.JdbcUtil;
import org.eclipse.osee.logger.Log;
/**
* @author Roberto E. Escobar
*/
public class JdbcServiceImpl implements JdbcService {
private final AtomicReference<JdbcServer> serverRef = new AtomicReference<JdbcServer>();
private final AtomicReference<JdbcClient> clientRef = new AtomicReference<JdbcClient>();
private final JdbcClient clientProxy = createClientProxy();
private Log logger;
private volatile Map<String, Object> config;
private JdbcServer getServer() {
return serverRef.get();
}
public void setLogger(Log logger) {
this.logger = logger;
}
public void start(Map<String, Object> props) {
logger.trace("Starting [%s - %s] ...", getClass().getSimpleName(), getServiceId(props));
update(props);
}
public void stop(Map<String, Object> props) {
logger.trace("Stopping [%s - %s] ...", getClass().getSimpleName(), getServiceId(props));
JdbcServer server = getServer();
if (server != null) {
server.stop();
}
}
public void update(Map<String, Object> props) {
this.config = props;
synchronized (clientRef) {
JdbcServer server = newServer(props);
JdbcClientBuilder builder = JdbcClientBuilder.newBuilder(props);
if (hasServerConfig(props)) {
JdbcServerConfig serverConfig = server.getConfig();
if (!Strings.isValid(builder.getDbUri())) {
builder = builder.fromType(JdbcDriverType.hsql, serverConfig.getDbName(), serverConfig.getDbPort());
}
if (!Strings.isValid(builder.getDbUsername())) {
String serverUsername = serverConfig.getDbUsername();
if (Strings.isValid(serverUsername)) {
builder.dbUsername(serverUsername);
}
}
if (!Strings.isValid(builder.getDbPassword())) {
String serverPassword = serverConfig.getDbPassword();
if (Strings.isValid(serverPassword)) {
builder.dbPassword(serverPassword);
}
}
}
clientRef.set(builder.build());
}
logger.trace("Configured - [%s - %s] - uri[%s] bindings%s", getClass().getSimpleName(), //
getId(), getClient().getConfig().getDbUri(), getBindings());
}
private JdbcServer newServer(Map<String, Object> props) {
JdbcServer newServer = null;
if (hasServerConfig(props)) {
JdbcServerBuilder builder = JdbcServerBuilder.newBuilder(props)//
.logger(asJdbcLogger(logger));
if (!Strings.isValid(builder.getDbUsername())) {
String username = JdbcUtil.get(props, JdbcConstants.JDBC__CONNECTION_USERNAME, null);
if (Strings.isValid(username)) {
builder.dbUsername(username);
}
}
if (!Strings.isValid(builder.getDbPassword())) {
String password = JdbcUtil.get(props, JdbcConstants.JDBC__CONNECTION_PASSWORD, null);
if (Strings.isValid(password)) {
builder.dbPassword(password);
}
}
newServer = builder.build();
}
JdbcServer oldServer = serverRef.getAndSet(newServer);
if (oldServer != null) {
oldServer.stop();
}
if (newServer != null) {
newServer.start();
}
return newServer;
}
@Override
public String getId() {
return JdbcUtil.getServiceId(config);
}
@Override
public JdbcClient getClient() {
return clientProxy;
}
@Override
public Set<String> getBindings() {
return JdbcUtil.getBindings(config);
}
@Override
public boolean hasServer() {
return getServer() != null;
}
@Override
public JdbcServerConfig getServerConfig() {
JdbcServer server = getServer();
return server != null ? server.getConfig() : null;
}
@Override
public boolean isServerAlive(long waitTime) {
JdbcServer server = getServer();
return server != null ? server.isAlive(waitTime) : false;
}
private static boolean hasServerConfig(Map<String, Object> props) {
boolean result = false;
for (String key : props.keySet()) {
if (key.startsWith(JdbcConstants.SERVER_NAMESPACE)) {
result = true;
break;
}
}
return result;
}
private static JdbcLogger asJdbcLogger(final Log logger) {
return new JdbcLogger() {
@Override
public void info(String msg, Object... data) {
logger.info(msg, data);
}
@Override
public void error(Throwable ex, String msg, Object... data) {
logger.error(ex, msg, data);
}
@Override
public void error(String msg, Object... data) {
logger.error(msg, data);
}
@Override
public void debug(String msg, Object... data) {
logger.debug(msg, data);
}
};
}
private JdbcClient createClientProxy() {
InvocationHandler handler = new JdbcClientInvocationHandler();
Class<?>[] types = new Class<?>[] {JdbcClient.class};
return (JdbcClient) Proxy.newProxyInstance(this.getClass().getClassLoader(), types, handler);
}
private final class JdbcClientInvocationHandler implements InvocationHandler {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
try {
JdbcClient client = clientRef.get();
return method.invoke(client, args);
} catch (Throwable ex) {
Throwable cause = ex.getCause();
if (cause == null) {
cause = ex;
}
throw cause;
}
}
}
}
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