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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.http.server.internal;
import org.eclipse.jetty.security.ConstraintMapping;
import org.eclipse.jetty.security.ConstraintSecurityHandler;
import org.eclipse.jetty.security.HashLoginService;
import org.eclipse.jetty.security.authentication.BasicAuthenticator;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.util.security.Constraint;
import org.eclipse.jetty.util.security.Credential;
import org.onap.policy.drools.http.server.HttpServletServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.annotation.JsonIgnore;
/**
* Http Server implementation using Embedded Jetty
*/
public abstract class JettyServletServer implements HttpServletServer, Runnable {
/**
* Logger
*/
private static Logger logger = LoggerFactory.getLogger(JettyServletServer.class);
/**
* server name
*/
protected final String name;
/**
* server host address
*/
protected final String host;
/**
* server port to bind
*/
protected final int port;
/**
* server auth user name
*/
protected String user;
/**
* server auth password name
*/
protected String password;
/**
* server base context path
*/
protected final String contextPath;
/**
* embedded jetty server
*/
protected final Server jettyServer;
/**
* servlet context
*/
protected final ServletContextHandler context;
/**
* jetty connector
*/
protected final ServerConnector connector;
/**
* jetty thread
*/
protected volatile Thread jettyThread;
/**
* start condition
*/
protected Object startCondition = new Object();
/**
* constructor
*
* @param name server name
* @param host server host
* @param port server port
* @param contextPath context path
*
* @throws IllegalArgumentException if invalid parameters are passed in
*/
public JettyServletServer(String name, String host, int port, String contextPath) {
if (name == null || name.isEmpty())
name = "http-" + port;
if (port <= 0 && port >= 65535)
throw new IllegalArgumentException("Invalid Port provided: " + port);
if (host == null || host.isEmpty())
host = "localhost";
if (contextPath == null || contextPath.isEmpty())
contextPath = "/";
this.name = name;
this.host = host;
this.port = port;
this.contextPath = contextPath;
this.context = new ServletContextHandler(ServletContextHandler.SESSIONS);
this.context.setContextPath(contextPath);
this.jettyServer = new Server();
this.connector = new ServerConnector(this.jettyServer);
this.connector.setName(name);
this.connector.setReuseAddress(true);
this.connector.setPort(port);
this.connector.setHost(host);
this.jettyServer.addConnector(this.connector);
this.jettyServer.setHandler(context);
}
@Override
public void setBasicAuthentication(String user, String password, String servletPath) {
if (user == null || user.isEmpty() || password == null || password.isEmpty())
throw new IllegalArgumentException("Missing user and/or password");
if (servletPath == null || servletPath.isEmpty())
servletPath = "/*";
HashLoginService hashLoginService = new HashLoginService();
hashLoginService.putUser(user,
Credential.getCredential(password),
new String[] {"user"});
hashLoginService.setName(this.connector.getName() + "-login-service");
Constraint constraint = new Constraint();
constraint.setName(Constraint.__BASIC_AUTH);
constraint.setRoles(new String[]{"user"});
constraint.setAuthenticate(true);
ConstraintMapping constraintMapping = new ConstraintMapping();
constraintMapping.setConstraint(constraint);
constraintMapping.setPathSpec(servletPath);
ConstraintSecurityHandler securityHandler = new ConstraintSecurityHandler();
securityHandler.setAuthenticator(new BasicAuthenticator());
securityHandler.setRealmName(this.connector.getName() + "-realm");
securityHandler.addConstraintMapping(constraintMapping);
securityHandler.setLoginService(hashLoginService);
this.context.setSecurityHandler(securityHandler);
this.user = user;
this.password = password;
}
/**
* jetty server execution
*/
@Override
public void run() {
try {
logger.info("{}: STARTING", this);
this.jettyServer.start();
if (logger.isInfoEnabled())
logger.info("{}: STARTED: {}", this, this.jettyServer.dump());
synchronized(this.startCondition) {
this.startCondition.notifyAll();
}
this.jettyServer.join();
} catch (Exception e) {
logger.error("{}: error found while bringing up server", this, e);
}
}
@Override
public boolean waitedStart(long maxWaitTime) throws InterruptedException {
logger.info("{}: WAITED-START", this);
if (maxWaitTime < 0)
throw new IllegalArgumentException("max-wait-time cannot be negative");
long pendingWaitTime = maxWaitTime;
if (!this.start())
return false;
synchronized (this.startCondition) {
while (!this.jettyServer.isRunning()) {
try {
long startTs = System.currentTimeMillis();
this.startCondition.wait(pendingWaitTime);
if (maxWaitTime == 0)
/* spurious notification */
continue;
long endTs = System.currentTimeMillis();
pendingWaitTime = pendingWaitTime - (endTs - startTs);
logger.info("{}: pending time is {} ms.", this, pendingWaitTime);
if (pendingWaitTime <= 0)
return false;
} catch (InterruptedException e) {
logger.warn("{}: waited-start has been interrupted", this);
throw e;
}
}
return (this.jettyServer.isRunning());
}
}
@Override
public boolean start() {
logger.info("{}: STARTING", this);
synchronized(this) {
if (jettyThread == null ||
!this.jettyThread.isAlive()) {
this.jettyThread = new Thread(this);
this.jettyThread.setName(this.name + "-" + this.port);
this.jettyThread.start();
}
}
return true;
}
@Override
public boolean stop() {
logger.info("{}: STOPPING", this);
synchronized(this) {
if (jettyThread == null) {
return true;
}
if (!jettyThread.isAlive()) {
this.jettyThread = null;
}
try {
this.connector.stop();
} catch (Exception e) {
logger.error("{}: error while stopping management server", this, e);
}
try {
this.jettyServer.stop();
} catch (Exception e) {
logger.error("{}: error while stopping management server", this, e);
return false;
}
Thread.yield();
}
return true;
}
@Override
public void shutdown() {
logger.info("{}: SHUTTING DOWN", this);
this.stop();
if (this.jettyThread == null)
return;
Thread jettyThreadCopy = this.jettyThread;
if (jettyThreadCopy.isAlive()) {
try {
jettyThreadCopy.join(2000L);
} catch (InterruptedException e) {
logger.warn("{}: error while shutting down management server", this);
Thread.currentThread().interrupt();
}
if (!jettyThreadCopy.isInterrupted()) {
try {
jettyThreadCopy.interrupt();
} catch(Exception e) {
// do nothing
logger.warn("{}: exception while shutting down (OK)", this, e);
}
}
}
this.jettyServer.destroy();
}
@Override
public boolean isAlive() {
if (this.jettyThread != null)
return this.jettyThread.isAlive();
return false;
}
@Override
public int getPort() {
return this.port;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @return the host
*/
public String getHost() {
return host;
}
/**
* @return the user
*/
public String getUser() {
return user;
}
/**
* @return the password
*/
@JsonIgnore
public String getPassword() {
return password;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("JettyServer [name=").append(name).append(", host=").append(host).append(", port=").append(port)
.append(", user=").append(user).append(", password=").append((password != null)).append(", contextPath=")
.append(contextPath).append(", jettyServer=").append(jettyServer).append(", context=").append(this.context)
.append(", connector=").append(connector).append(", jettyThread=").append(jettyThread)
.append("]");
return builder.toString();
}
}
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