/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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.
*/
package com.vaadin.server;
import java.util.Properties;
import java.util.logging.Logger;
import com.vaadin.shared.communication.PushMode;
/**
* The default implementation of {@link DeploymentConfiguration} based on a base
* class for resolving system properties and a set of init parameters.
*
* @author Vaadin Ltd
* @since 7.0.0
*/
public class DefaultDeploymentConfiguration
extends AbstractDeploymentConfiguration {
/**
* Default value for {@link #getResourceCacheTime()} = {@value} .
*/
public static final int DEFAULT_RESOURCE_CACHE_TIME = 3600;
/**
* Default value for {@link #getHeartbeatInterval()} = {@value} .
*/
public static final int DEFAULT_HEARTBEAT_INTERVAL = 300;
/**
* Default value for {@link #isCloseIdleSessions()} = {@value} .
*/
public static final boolean DEFAULT_CLOSE_IDLE_SESSIONS = false;
/**
* Default value for {@link #isSyncIdCheckEnabled()} = {@value} .
*
* @since 7.3
*/
public static final boolean DEFAULT_SYNC_ID_CHECK = true;
public static final boolean DEFAULT_SEND_URLS_AS_PARAMETERS = true;
private final Properties initParameters;
private boolean productionMode;
private boolean xsrfProtectionEnabled;
private int resourceCacheTime;
private int heartbeatInterval;
private boolean closeIdleSessions;
private PushMode pushMode;
private final Class<?> systemPropertyBaseClass;
private boolean syncIdCheck;
private boolean sendUrlsAsParameters;
/**
* Create a new deployment configuration instance.
*
* @param systemPropertyBaseClass
* the class that should be used as a basis when reading system
* properties
* @param initParameters
* the init parameters that should make up the foundation for
* this configuration
*/
public DefaultDeploymentConfiguration(Class<?> systemPropertyBaseClass,
Properties initParameters) {
this.initParameters = initParameters;
this.systemPropertyBaseClass = systemPropertyBaseClass;
checkProductionMode();
checkXsrfProtection();
checkResourceCacheTime();
checkHeartbeatInterval();
checkCloseIdleSessions();
checkPushMode();
checkSyncIdCheck();
checkSendUrlsAsParameters();
}
@Override
public String getApplicationOrSystemProperty(String propertyName,
String defaultValue) {
String val = null;
// Try system properties
val = getSystemProperty(propertyName);
if (val != null) {
return val;
}
// Try application properties
val = getApplicationProperty(propertyName);
if (val != null) {
return val;
}
return defaultValue;
}
/**
* Gets an system property value.
*
* @param parameterName
* the Name or the parameter.
* @return String value or null if not found
*/
protected String getSystemProperty(String parameterName) {
String val = null;
String pkgName;
final Package pkg = systemPropertyBaseClass.getPackage();
if (pkg != null) {
pkgName = pkg.getName();
} else {
final String className = systemPropertyBaseClass.getName();
int index = className.lastIndexOf('.');
if (index >= 0) {
pkgName = className.substring(0, index);
} else {
pkgName = null;
}
}
if (pkgName == null) {
pkgName = "";
} else {
pkgName += '.';
}
val = System.getProperty(pkgName + parameterName);
if (val != null) {
return val;
}
// Try lowercased system properties
val = System.getProperty(pkgName + parameterName.toLowerCase());
if (val != null) {
return val;
}
// version prefixed with just "vaadin."
val = System.getProperty("vaadin." + parameterName);
return val;
}
/**
* Gets an application property value.
*
* @param parameterName
* the Name or the parameter.
* @return String value or null if not found
*/
public String getApplicationProperty(String parameterName) {
String val = initParameters.getProperty(parameterName);
if (val != null) {
return val;
}
// Try lower case application properties for backward compatibility with
// 3.0.2 and earlier
val = initParameters.getProperty(parameterName.toLowerCase());
return val;
}
/**
* {@inheritDoc}
*
* The default is false.
*/
@Override
public boolean isProductionMode() {
return productionMode;
}
/**
* {@inheritDoc}
* <p>
* The default is true.
*/
@Override
public boolean isXsrfProtectionEnabled() {
return xsrfProtectionEnabled;
}
/**
* {@inheritDoc}
* <p>
* The default interval is 3600 seconds (1 hour).
*/
@Override
public int getResourceCacheTime() {
return resourceCacheTime;
}
/**
* {@inheritDoc}
* <p>
* The default interval is 300 seconds (5 minutes).
*/
@Override
public int getHeartbeatInterval() {
return heartbeatInterval;
}
/**
* {@inheritDoc}
* <p>
* The default value is false.
*/
@Override
public boolean isCloseIdleSessions() {
return closeIdleSessions;
}
/**
* {@inheritDoc}
* <p>
* The default value is <code>true</code>.
*/
@Override
public boolean isSyncIdCheckEnabled() {
return syncIdCheck;
}
/**
* {@inheritDoc}
* <p>
* The default value is <code>true</code>.
*/
@Override
public boolean isSendUrlsAsParameters() {
return sendUrlsAsParameters;
}
/**
* {@inheritDoc}
* <p>
* The default mode is {@link PushMode#DISABLED}.
*/
@Override
public PushMode getPushMode() {
return pushMode;
}
@Override
public Properties getInitParameters() {
return initParameters;
}
/**
* Log a warning if Vaadin is not running in production mode.
*/
private void checkProductionMode() {
productionMode = getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_PRODUCTION_MODE, "false")
.equals("true");
if (!productionMode) {
getLogger().warning(Constants.NOT_PRODUCTION_MODE_INFO);
}
}
/**
* Log a warning if cross-site request forgery protection is disabled.
*/
private void checkXsrfProtection() {
xsrfProtectionEnabled = !getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_DISABLE_XSRF_PROTECTION, "false")
.equals("true");
if (!xsrfProtectionEnabled) {
getLogger().warning(Constants.WARNING_XSRF_PROTECTION_DISABLED);
}
}
/**
* Log a warning if resource cache time is set but is not an integer.
*/
private void checkResourceCacheTime() {
try {
resourceCacheTime = Integer.parseInt(getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_RESOURCE_CACHE_TIME,
Integer.toString(DEFAULT_RESOURCE_CACHE_TIME)));
} catch (NumberFormatException e) {
getLogger().warning(
Constants.WARNING_RESOURCE_CACHING_TIME_NOT_NUMERIC);
resourceCacheTime = DEFAULT_RESOURCE_CACHE_TIME;
}
}
private void checkHeartbeatInterval() {
try {
heartbeatInterval = Integer.parseInt(getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_HEARTBEAT_INTERVAL,
Integer.toString(DEFAULT_HEARTBEAT_INTERVAL)));
} catch (NumberFormatException e) {
getLogger()
.warning(Constants.WARNING_HEARTBEAT_INTERVAL_NOT_NUMERIC);
heartbeatInterval = DEFAULT_HEARTBEAT_INTERVAL;
}
}
private void checkCloseIdleSessions() {
closeIdleSessions = getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_CLOSE_IDLE_SESSIONS,
Boolean.toString(DEFAULT_CLOSE_IDLE_SESSIONS)).equals("true");
}
private void checkPushMode() {
String mode = getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_PUSH_MODE,
PushMode.DISABLED.toString());
try {
pushMode = Enum.valueOf(PushMode.class, mode.toUpperCase());
} catch (IllegalArgumentException e) {
getLogger().warning(Constants.WARNING_PUSH_MODE_NOT_RECOGNIZED);
pushMode = PushMode.DISABLED;
}
}
private void checkSyncIdCheck() {
syncIdCheck = getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_SYNC_ID_CHECK,
Boolean.toString(DEFAULT_SYNC_ID_CHECK)).equals("true");
}
private void checkSendUrlsAsParameters() {
sendUrlsAsParameters = getApplicationOrSystemProperty(
Constants.SERVLET_PARAMETER_SENDURLSASPARAMETERS,
Boolean.toString(DEFAULT_SEND_URLS_AS_PARAMETERS))
.equals("true");
}
private Logger getLogger() {
return Logger.getLogger(getClass().getName());
}
}