webbeans-impl/src/main/java/org/apache/webbeans/config/OpenWebBeansConfiguration.java - openwebbeans - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements. See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership. The ASF licenses this file
  * to you 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 org.apache.webbeans.config;

 import java.io.IOException;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;

 import org.apache.webbeans.exception.WebBeansConfigurationException;
 import org.apache.webbeans.logger.WebBeansLoggerFacade;

 /**
  * Defines configuration for OpenWebBeans.
  *
  * The algorithm is easy:
  * <ul>
  * <li>Load all properties you can find with the name (META-INF/openwebbeans/openwebbeans.properties),</li>
  * <li>Sort the property files via their configuration.ordinal in ascending order,</li>
  * <li>Overload them in a loop,</li>
  * <li><Overload them via System.getProperties/li>
  * <li><Overload them via System.getenv/li>
  * <li>Use the final list of properties.</li>
  * </ul>
  */
 public class OpenWebBeansConfiguration
 {
     /**Logger instance*/
     private static final Logger logger = WebBeansLoggerFacade.getLogger(OpenWebBeansConfiguration.class);

     /**
      * Conversation periodic delay in ms. This is not used by OWB out of the box.
      * Some Containers might implement it though.
      */
     public static final String CONVERSATION_PERIODIC_DELAY = "org.apache.webbeans.conversation.Conversation.periodicDelay";

     /**Timeout interval in ms*/
     public static final String CONVERSATION_TIMEOUT_INTERVAL = "org.apache.webbeans.conversation.Conversation.timeoutInterval";

     /**
      * Environment property which comma separated list of classes which
      * should NOT fail with UnproxyableResolutionException
      */
     public static final String ALLOW_PROXYING_PARAM = "javax.enterprise.inject.allowProxying.classes";

     /**
      * Lifycycle methods like {@link javax.annotation.PostConstruct} and
      * {@link javax.annotation.PreDestroy} must not define a checked Exception
      * regarding to the spec. But this is often unnecessary restrictive so we
      * allow to disable this check application wide.
      */
     public static final String INTERCEPTOR_FORCE_NO_CHECKED_EXCEPTIONS = "org.apache.webbeans.forceNoCheckedExceptions";

     /**
      * Enable that calls to various methods get strictly validated.
      * Defaults to 'false' for more performance.
      */
     public static final String STRICT_DYNAMIC_VALIDATION = "org.apache.webbeans.strictDynamicValidation";

     /**If generics should be taken into account for the matching*/
     public static final String FAST_MATCHING = "org.apache.webbeans.container.InjectionResolver.fastMatching";

     /**Use EJB Discovery or not*/
     public static final String USE_EJB_DISCOVERY = "org.apache.webbeans.spi.deployer.useEjbMetaDataDiscoveryService";

     /**Container lifecycle*/
     public static final String CONTAINER_LIFECYCLE = "org.apache.webbeans.spi.ContainerLifecycle";

     /**JNDI Service SPI*/
     public static final String JNDI_SERVICE = "org.apache.webbeans.spi.JNDIService";

     /**Scanner Service*/
     public static final String SCANNER_SERVICE = "org.apache.webbeans.spi.ScannerService";

     /**Contexts Service*/
     public static final String CONTEXTS_SERVICE = "org.apache.webbeans.spi.ContextsService";

     /**Conversation Service*/
     public static final String CONVERSATION_SERVICE = "org.apache.webbeans.spi.ConversationService";

     /**Resource Injection Service*/
     public static final String RESOURCE_INJECTION_SERVICE = "org.apache.webbeans.spi.ResourceInjectionService";

     /**Security Service*/
     public static final String SECURITY_SERVICE = "org.apache.webbeans.spi.SecurityService";

     /**Validator Service*/
     public static final String VALIDATOR_SERVICE = "org.apache.webbeans.spi.ValidatorService";

     /**Transaction Service*/
     public static final String TRANSACTION_SERVICE = "org.apache.webbeans.spi.TransactionService";

     /**Application is core JSP*/
     public static final String APPLICATION_IS_JSP = "org.apache.webbeans.application.jsp";

     /**Supports conversations*/
     public static final String APPLICATION_SUPPORTS_CONVERSATION = "org.apache.webbeans.application.supportsConversation";

     /** @Produces with interceptor/decorator support */
     public static final String PRODUCER_INTERCEPTION_SUPPORT = "org.apache.webbeans.application.supportsProducerInterception";

     /**EL Adaptor*/
     public static final String EL_ADAPTOR_SERVICE = "org.apache.webbeans.spi.adaptor.ELAdaptor";

     /**
      * prefix followed by the fully qualified scope name, for configuring NormalScopedBeanInterceptorHandler
      * for our proxies.
      *
      * The format is like the following:
      * 'org.apache.webbeans.proxy.mapping.' followed by the scope annotation = a subclass of a NormalScopedBeanInterceptorHandler
      *
      * Example:
      * <pre>
      * org.apache.webbeans.proxy.mapping.javax.enterprise.context.ApplicationScoped=org.apache.webbeans.intercept.ApplicationScopedBeanInterceptorHandler
      * org.apache.webbeans.proxy.mapping.javax.enterprise.context.RequestScoped=org.apache.webbeans.intercept.RequestScopedBeanInterceptorHandler
      * org.apache.webbeans.proxy.mapping.javax.enterprise.context.SessionScoped=org.apache.webbeans.intercept.SessionScopedBeanInterceptorHandler
      * </pre>
      *
      */
     public static final String PROXY_MAPPING_PREFIX = "org.apache.webbeans.proxy.mapping.";

     /**
      * Use BDABeansXmlScanner to determine if interceptors, decorators, and
      * alternatives are enabled in the beans.xml of a given BDA. For an
      * application containing jar1 and jar2, this implies that an interceptor
      * enabled in the beans.xml of jar1 is not automatically enabled in jar2
      * @deprecated as spec section 5 and 12 contradict each other and the BDA per jar handling is broken anyway
      **/
     public static final String USE_BDA_BEANSXML_SCANNER = "org.apache.webbeans.useBDABeansXMLScanner";

     /** A list of known JARs/paths which should not be scanned for beans */
     public static final String SCAN_EXCLUSION_PATHS = "org.apache.webbeans.scanExclusionPaths";

     /**
      * Flag which indicates that only jars with an explicit META-INF/beans.xml marker file shall get parsed.
      * Default is {@code false}.
      *
      * This might be switched on to improve boot time in cases where you always have beans.xml in
      * your jars or classpath entries.
      */
     public static final String SCAN_ONLY_BEANS_XML_JARS = "org.apache.webbeans.scanBeansXmlOnly";

     /**
      * a comma-separated list of fully qualified class names that should be ignored
      * when determining if a decorator matches its delegate.  These are typically added by
      * weaving or bytecode modification.
      */
     public static final String IGNORED_INTERFACES = "org.apache.webbeans.ignoredDecoratorInterfaces";

     /**
      * A comma-separated list of fully qualified class names of CDI Extensions that should be ignored.
      *
      *
      */
     public static final String IGNORED_EXTENSIONS = "org.apache.webbeans.ignoredExtensions";

     /**
      * By default we do _not_ force session creation in our WebBeansConfigurationListener. We only create the
      * Session if we really need the SessionContext. E.g. when we create a Contextual Instance in it.
      * Sometimes this creates a problem as the HttpSession can only be created BEFORE anything got written back
      * to the client.
      * With this configuration you can choose between 3 settings
      * <ul>
      *     <li>&quot;true&quot; the Session will <u>always</u> eagerly be created at the begin of a request</li>
      *     <li>&quot;false&quot; the Session will <u>never</u> eagerly be created but only lazily when the first &#064;SessionScoped bean gets used</li>
      *     <li>any other value will be interpreted as Java regular expression for request URIs which need eager Session initialization</li>
      * </ul>
      */
     public static final String EAGER_SESSION_INITIALISATION = "org.apache.webbeans.web.eagerSessionInitialisation";

     /**
      * The Java Version to use for the generated proxy classes.
      * If "auto" then we will pick the version of the current JVM.
      * The default is set to "1.6" as some tools in jetty/tomcat/etc still
      * cannot properly handle Java8 (mostly due to older Eclipse JDT versions).
      */
     public static final String GENERATOR_JAVA_VERSION = "org.apache.webbeans.generator.javaVersion";


     /**Default configuration files*/
     private static final String DEFAULT_CONFIG_PROPERTIES_NAME = "META-INF/openwebbeans/openwebbeans.properties";

     /**
      * A value which indicates an 'automatic' behaviour.
      */
     private static final String AUTO_CONFIG = "auto";

     /**Property of application*/
     private final Properties configProperties = new Properties();


     /**
      * @see #IGNORED_INTERFACES
      */
     private Set<String> ignoredInterfaces;

     /**
      * @see #IGNORED_EXTENSIONS
      */
     private Set<String> ignoredExtensions;

     /**
      * All configured lists per key.
      *
      * For a single key the following configuration sources will get parsed:
      * <ul>
      *     <li>all {@link #DEFAULT_CONFIG_PROPERTIES_NAME} files</li>
      *     <li>{@code System.getProperties()}</li>
      *     <li>{@code System.env()}</li>
      * </ul>
      *
      * All the found values will get split by comma (',') and all trimmed values
      * will get stored in a Set.
      *
      */
     private Map<String, Set<String>> configuredLists = new HashMap<>();


     /**
      * you can configure this externally as well.
      *
      * @param properties
      */
     public OpenWebBeansConfiguration(Properties properties)
     {
         this();

         // and override all settings with the given properties
         configProperties.putAll(properties);
     }

     /**
      * Parse configuration.
      */
     public OpenWebBeansConfiguration()
     {
         parseConfiguration();
     }


     /**
      * (re)read the configuration from the resources in the classpath.
      * @see #DEFAULT_CONFIG_PROPERTIES_NAME
      * @see #DEFAULT_CONFIG_PROPERTIES_NAME
      */
     public synchronized void parseConfiguration() throws WebBeansConfigurationException
     {
         Properties newConfigProperties = PropertyLoader.getProperties(DEFAULT_CONFIG_PROPERTIES_NAME);

         configProperties.clear();

         // set the new one as perfect fit.
         if(newConfigProperties != null)
         {
             overrideWithGlobalSettings(newConfigProperties);

             configProperties.putAll(newConfigProperties);
         }

     }

     /**
      * Take the given commaSeparatedVals and spit them by ',' and trim them.
      * @return all trimmed values or an empty list
      */
     public List<String> splitValues(String commaSeparatedVals)
     {
         ArrayList<String> values = new ArrayList<>();
         if (commaSeparatedVals != null)
         {
             for (String value : commaSeparatedVals.split(","))
             {
                 value = value.trim();
                 if (!value.isEmpty())
                 {
                     values.add(value);
                 }
             }
         }
         return values;
     }

     private void overrideWithGlobalSettings(Properties configProperties)
     {
         logger.fine("Overriding properties from System and Env properties");

         Properties systemProperties;
         if(System.getSecurityManager() != null)
         {
             systemProperties = doPrivilegedGetSystemProperties();
         }
         else
         {
             systemProperties = System.getProperties();
         }

         Map<String, String> systemEnvironment = System.getenv();

         for (Map.Entry property : configProperties.entrySet())
         {
             String key = (String) property.getKey();
             String value = (String) property.getValue();

             value = systemProperties.getProperty(key) != null ? systemProperties.getProperty(key) : value;

             String envKey = key.replace('.', '_');
             value = systemEnvironment.get(envKey) != null ? systemEnvironment.get(envKey) : value;

             if (value != null)
             {
                 configProperties.put(key, value);
             }
         }
     }

     private Properties doPrivilegedGetSystemProperties()
     {
         return AccessController.doPrivileged(
             new PrivilegedAction<Properties>()
             {
                 @Override
                 public Properties run()
                 {
                     return System.getProperties();
                 }

             }
         );
     }


     /**
      * Gets property.
      * @param key
      * @return String with the property value or <code>null</code>
      */
     public String getProperty(String key)
     {
         return configProperties.getProperty(key);
     }

     /**
      * Gets property value.
      * @param key
      * @param defaultValue
      * @return String with the property value or <code>null</code>
      */
     public String getProperty(String key,String defaultValue)
     {
         return configProperties.getProperty(key, defaultValue);
     }


     /**
      * Sets given property.
      * @param key property name
      * @param value property value
      */
     public synchronized void setProperty(String key, Object value)
     {
         configProperties.put(key, value);
     }


     /**
      * Gets jsp property.
      * @return true if jsp
      */
     public boolean isJspApplication()
     {
         String value = getProperty(APPLICATION_IS_JSP);

         return Boolean.valueOf(value);
     }

     /**
      * Gets conversation supports property.
      * @return true if supports
      */
     public boolean supportsConversation()
     {
         String value = getProperty(APPLICATION_SUPPORTS_CONVERSATION);

         return Boolean.valueOf(value);
     }

     /**
      * Flag which indicates that only jars with an explicit META-INF/beans.xml marker file shall get paresed.
      * Default is {@code false}
      */
     public boolean scanOnlyBeansXmlJars()
     {
         String value = getProperty(SCAN_ONLY_BEANS_XML_JARS);
         return "true".equalsIgnoreCase(value);
     }

     /**
      * Flag which indicates that programmatic invocations to vaious BeanManager methods
      * should get strictly validated.
      * E.g. whether qualifier parameters are really qualifiers, etc.
      * Default is {@code false}
      */
     public boolean strictDynamicValidation()
     {
         String value = getProperty(STRICT_DYNAMIC_VALIDATION);
         return "true".equalsIgnoreCase(value);
     }

     public synchronized Set<String> getIgnoredInterfaces()
     {
         if (ignoredInterfaces == null)
         {
             ignoredInterfaces = getPropertyList(IGNORED_INTERFACES);
         }
         return ignoredInterfaces;
     }

     public synchronized Set<String> getIgnoredExtensions()
     {
         if (ignoredExtensions == null)
         {
             ignoredExtensions = getPropertyList(IGNORED_EXTENSIONS);
         }
         return ignoredExtensions;
     }

     private Set<String> getPropertyList(String configKey)
     {
         String configValue = getProperty(configKey);
         if (configValue != null)
         {
             return new HashSet<>(Arrays.asList(configValue.split("[,\\p{javaWhitespace}]")));
         }
         return Collections.emptySet();
     }

     /**
      * Scan all openwebbeans.properties files + system properties +
      * syste.env for the given key.
      * If the key is comma separated then use the separate tokens.
      * All the values get put into a big set.
      */
     public synchronized Set<String> getConfigListValues(String keyName)
     {
         Set<String> allValues = configuredLists.get(keyName);
         if (allValues != null)
         {
             return allValues;
         }

         allValues = new HashSet<>();
         try
         {
             List<Properties> properties = PropertyLoader.loadAllProperties(DEFAULT_CONFIG_PROPERTIES_NAME);
             if (properties != null)
             {
                 for (Properties property : properties)
                 {
                     String values = (String) property.get(keyName);
                     allValues.addAll(splitValues(values));
                 }
             }
         }
         catch (IOException e)
         {
             logger.log(Level.SEVERE, "Error while loading the propertyFile " + DEFAULT_CONFIG_PROPERTIES_NAME, e);
             return Collections.EMPTY_SET;
         }

         // search for the key in the properties
         String value = System.getProperty(keyName);
         allValues.addAll(splitValues(value));

         // search for the key in the environment
         String envKeyName = keyName.toUpperCase().replace(".", "_");
         value = System.getenv(envKeyName);
         allValues.addAll(splitValues(value));

         configuredLists.put(keyName, allValues);

         return allValues;
     }

     /**
      * Add a configuration value to the Set of configured values registered
      * under the keyName.
      *
      * Calling this method ensures that all the configured values are first
      * read from the environment and configuration properties.
      *
      * @see #getConfigListValues(String) get's called internally to insure the list is initialised
      */
     public synchronized void addConfigListValue(String keyName, String value)
     {
         Set<String> configListValues = getConfigListValues(keyName);
         configListValues.add(value);
     }

     public boolean supportsInterceptionOnProducers()
     {
         return Boolean.parseBoolean(getProperty(PRODUCER_INTERCEPTION_SUPPORT, "true"));
     }

     public String getGeneratorJavaVersion()
     {
         String generatorJavaVersion = getProperty(GENERATOR_JAVA_VERSION);
         if (generatorJavaVersion == null || AUTO_CONFIG.equals(generatorJavaVersion))
         {
             return System.getProperty("java.version");
         }

         return generatorJavaVersion;
     }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you 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 org.apache.webbeans.config;

	import java.io.IOException;
	import java.security.AccessController;
	import java.security.PrivilegedAction;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.HashSet;
	import java.util.List;
	import java.util.Map;
	import java.util.Properties;
	import java.util.Set;
	import java.util.logging.Level;
	import java.util.logging.Logger;

	import org.apache.webbeans.exception.WebBeansConfigurationException;
	import org.apache.webbeans.logger.WebBeansLoggerFacade;

	/**
	* Defines configuration for OpenWebBeans.
	*
	* The algorithm is easy:
	* <ul>
	* <li>Load all properties you can find with the name (META-INF/openwebbeans/openwebbeans.properties),</li>
	* <li>Sort the property files via their configuration.ordinal in ascending order,</li>
	* <li>Overload them in a loop,</li>
	* <li><Overload them via System.getProperties/li>
	* <li><Overload them via System.getenv/li>
	* <li>Use the final list of properties.</li>
	* </ul>
	*/
	public class OpenWebBeansConfiguration
	{
	/*Logger instance/
	private static final Logger logger = WebBeansLoggerFacade.getLogger(OpenWebBeansConfiguration.class);

	/**
	* Conversation periodic delay in ms. This is not used by OWB out of the box.
	* Some Containers might implement it though.
	*/
	public static final String CONVERSATION_PERIODIC_DELAY = "org.apache.webbeans.conversation.Conversation.periodicDelay";

	/*Timeout interval in ms/
	public static final String CONVERSATION_TIMEOUT_INTERVAL = "org.apache.webbeans.conversation.Conversation.timeoutInterval";

	/**
	* Environment property which comma separated list of classes which
	* should NOT fail with UnproxyableResolutionException
	*/
	public static final String ALLOW_PROXYING_PARAM = "javax.enterprise.inject.allowProxying.classes";

	/**
	* Lifycycle methods like {@link javax.annotation.PostConstruct} and
	* {@link javax.annotation.PreDestroy} must not define a checked Exception
	* regarding to the spec. But this is often unnecessary restrictive so we
	* allow to disable this check application wide.
	*/
	public static final String INTERCEPTOR_FORCE_NO_CHECKED_EXCEPTIONS = "org.apache.webbeans.forceNoCheckedExceptions";

	/**
	* Enable that calls to various methods get strictly validated.
	* Defaults to 'false' for more performance.
	*/
	public static final String STRICT_DYNAMIC_VALIDATION = "org.apache.webbeans.strictDynamicValidation";

	/*If generics should be taken into account for the matching/
	public static final String FAST_MATCHING = "org.apache.webbeans.container.InjectionResolver.fastMatching";

	/*Use EJB Discovery or not/
	public static final String USE_EJB_DISCOVERY = "org.apache.webbeans.spi.deployer.useEjbMetaDataDiscoveryService";

	/*Container lifecycle/
	public static final String CONTAINER_LIFECYCLE = "org.apache.webbeans.spi.ContainerLifecycle";

	/*JNDI Service SPI/
	public static final String JNDI_SERVICE = "org.apache.webbeans.spi.JNDIService";

	/*Scanner Service/
	public static final String SCANNER_SERVICE = "org.apache.webbeans.spi.ScannerService";

	/*Contexts Service/
	public static final String CONTEXTS_SERVICE = "org.apache.webbeans.spi.ContextsService";

	/*Conversation Service/
	public static final String CONVERSATION_SERVICE = "org.apache.webbeans.spi.ConversationService";

	/*Resource Injection Service/
	public static final String RESOURCE_INJECTION_SERVICE = "org.apache.webbeans.spi.ResourceInjectionService";

	/*Security Service/
	public static final String SECURITY_SERVICE = "org.apache.webbeans.spi.SecurityService";

	/*Validator Service/
	public static final String VALIDATOR_SERVICE = "org.apache.webbeans.spi.ValidatorService";

	/*Transaction Service/
	public static final String TRANSACTION_SERVICE = "org.apache.webbeans.spi.TransactionService";

	/*Application is core JSP/
	public static final String APPLICATION_IS_JSP = "org.apache.webbeans.application.jsp";

	/*Supports conversations/
	public static final String APPLICATION_SUPPORTS_CONVERSATION = "org.apache.webbeans.application.supportsConversation";

	/** @Produces with interceptor/decorator support */
	public static final String PRODUCER_INTERCEPTION_SUPPORT = "org.apache.webbeans.application.supportsProducerInterception";

	/*EL Adaptor/
	public static final String EL_ADAPTOR_SERVICE = "org.apache.webbeans.spi.adaptor.ELAdaptor";

	/**
	* prefix followed by the fully qualified scope name, for configuring NormalScopedBeanInterceptorHandler
	* for our proxies.
	*
	* The format is like the following:
	* 'org.apache.webbeans.proxy.mapping.' followed by the scope annotation = a subclass of a NormalScopedBeanInterceptorHandler
	*
	* Example:
	* <pre>
	* org.apache.webbeans.proxy.mapping.javax.enterprise.context.ApplicationScoped=org.apache.webbeans.intercept.ApplicationScopedBeanInterceptorHandler
	* org.apache.webbeans.proxy.mapping.javax.enterprise.context.RequestScoped=org.apache.webbeans.intercept.RequestScopedBeanInterceptorHandler
	* org.apache.webbeans.proxy.mapping.javax.enterprise.context.SessionScoped=org.apache.webbeans.intercept.SessionScopedBeanInterceptorHandler
	* </pre>
	*
	*/
	public static final String PROXY_MAPPING_PREFIX = "org.apache.webbeans.proxy.mapping.";

	/**
	* Use BDABeansXmlScanner to determine if interceptors, decorators, and
	* alternatives are enabled in the beans.xml of a given BDA. For an
	* application containing jar1 and jar2, this implies that an interceptor
	* enabled in the beans.xml of jar1 is not automatically enabled in jar2
	* @deprecated as spec section 5 and 12 contradict each other and the BDA per jar handling is broken anyway
	**/
	public static final String USE_BDA_BEANSXML_SCANNER = "org.apache.webbeans.useBDABeansXMLScanner";

	/** A list of known JARs/paths which should not be scanned for beans */
	public static final String SCAN_EXCLUSION_PATHS = "org.apache.webbeans.scanExclusionPaths";

	/**
	* Flag which indicates that only jars with an explicit META-INF/beans.xml marker file shall get parsed.
	* Default is {@code false}.
	*
	* This might be switched on to improve boot time in cases where you always have beans.xml in
	* your jars or classpath entries.
	*/
	public static final String SCAN_ONLY_BEANS_XML_JARS = "org.apache.webbeans.scanBeansXmlOnly";

	/**
	* a comma-separated list of fully qualified class names that should be ignored
	* when determining if a decorator matches its delegate. These are typically added by
	* weaving or bytecode modification.
	*/
	public static final String IGNORED_INTERFACES = "org.apache.webbeans.ignoredDecoratorInterfaces";

	/**
	* A comma-separated list of fully qualified class names of CDI Extensions that should be ignored.
	*
	*
	*/
	public static final String IGNORED_EXTENSIONS = "org.apache.webbeans.ignoredExtensions";

	/**
	* By default we do _not_ force session creation in our WebBeansConfigurationListener. We only create the
	* Session if we really need the SessionContext. E.g. when we create a Contextual Instance in it.
	* Sometimes this creates a problem as the HttpSession can only be created BEFORE anything got written back
	* to the client.
	* With this configuration you can choose between 3 settings
	* <ul>
	* <li>"true" the Session will <u>always</u> eagerly be created at the begin of a request</li>
	* <li>"false" the Session will <u>never</u> eagerly be created but only lazily when the first @SessionScoped bean gets used</li>
	* <li>any other value will be interpreted as Java regular expression for request URIs which need eager Session initialization</li>
	* </ul>
	*/
	public static final String EAGER_SESSION_INITIALISATION = "org.apache.webbeans.web.eagerSessionInitialisation";

	/**
	* The Java Version to use for the generated proxy classes.
	* If "auto" then we will pick the version of the current JVM.
	* The default is set to "1.6" as some tools in jetty/tomcat/etc still
	* cannot properly handle Java8 (mostly due to older Eclipse JDT versions).
	*/
	public static final String GENERATOR_JAVA_VERSION = "org.apache.webbeans.generator.javaVersion";


	/*Default configuration files/
	private static final String DEFAULT_CONFIG_PROPERTIES_NAME = "META-INF/openwebbeans/openwebbeans.properties";

	/**
	* A value which indicates an 'automatic' behaviour.
	*/
	private static final String AUTO_CONFIG = "auto";

	/*Property of application/
	private final Properties configProperties = new Properties();


	/**
	* @see #IGNORED_INTERFACES
	*/
	private Set<String> ignoredInterfaces;

	/**
	* @see #IGNORED_EXTENSIONS
	*/
	private Set<String> ignoredExtensions;

	/**
	* All configured lists per key.
	*
	* For a single key the following configuration sources will get parsed:
	* <ul>
	* <li>all {@link #DEFAULT_CONFIG_PROPERTIES_NAME} files</li>
	* <li>{@code System.getProperties()}</li>
	* <li>{@code System.env()}</li>
	* </ul>
	*
	* All the found values will get split by comma (',') and all trimmed values
	* will get stored in a Set.
	*
	*/
	private Map<String, Set<String>> configuredLists = new HashMap<>();


	/**
	* you can configure this externally as well.
	*
	* @param properties
	*/
	public OpenWebBeansConfiguration(Properties properties)
	{
	this();

	// and override all settings with the given properties
	configProperties.putAll(properties);
	}

	/**
	* Parse configuration.
	*/
	public OpenWebBeansConfiguration()
	{
	parseConfiguration();
	}



	/**
	* (re)read the configuration from the resources in the classpath.
	* @see #DEFAULT_CONFIG_PROPERTIES_NAME
	* @see #DEFAULT_CONFIG_PROPERTIES_NAME
	*/
	public synchronized void parseConfiguration() throws WebBeansConfigurationException
	{
	Properties newConfigProperties = PropertyLoader.getProperties(DEFAULT_CONFIG_PROPERTIES_NAME);

	configProperties.clear();

	// set the new one as perfect fit.
	if(newConfigProperties != null)
	{
	overrideWithGlobalSettings(newConfigProperties);

	configProperties.putAll(newConfigProperties);
	}

	}

	/**
	* Take the given commaSeparatedVals and spit them by ',' and trim them.
	* @return all trimmed values or an empty list
	*/
	public List<String> splitValues(String commaSeparatedVals)
	{
	ArrayList<String> values = new ArrayList<>();
	if (commaSeparatedVals != null)
	{
	for (String value : commaSeparatedVals.split(","))
	{
	value = value.trim();
	if (!value.isEmpty())
	{
	values.add(value);
	}
	}
	}
	return values;
	}

	private void overrideWithGlobalSettings(Properties configProperties)
	{
	logger.fine("Overriding properties from System and Env properties");

	Properties systemProperties;
	if(System.getSecurityManager() != null)
	{
	systemProperties = doPrivilegedGetSystemProperties();
	}
	else
	{
	systemProperties = System.getProperties();
	}

	Map<String, String> systemEnvironment = System.getenv();

	for (Map.Entry property : configProperties.entrySet())
	{
	String key = (String) property.getKey();
	String value = (String) property.getValue();

	value = systemProperties.getProperty(key) != null ? systemProperties.getProperty(key) : value;

	String envKey = key.replace('.', '_');
	value = systemEnvironment.get(envKey) != null ? systemEnvironment.get(envKey) : value;

	if (value != null)
	{
	configProperties.put(key, value);
	}
	}
	}

	private Properties doPrivilegedGetSystemProperties()
	{
	return AccessController.doPrivileged(
	new PrivilegedAction<Properties>()
	{
	@Override
	public Properties run()
	{
	return System.getProperties();
	}

	}
	);
	}


	/**
	* Gets property.
	* @param key
	* @return String with the property value or <code>null</code>
	*/
	public String getProperty(String key)
	{
	return configProperties.getProperty(key);
	}

	/**
	* Gets property value.
	* @param key
	* @param defaultValue
	* @return String with the property value or <code>null</code>
	*/
	public String getProperty(String key,String defaultValue)
	{
	return configProperties.getProperty(key, defaultValue);
	}


	/**
	* Sets given property.
	* @param key property name
	* @param value property value
	*/
	public synchronized void setProperty(String key, Object value)
	{
	configProperties.put(key, value);
	}


	/**
	* Gets jsp property.
	* @return true if jsp
	*/
	public boolean isJspApplication()
	{
	String value = getProperty(APPLICATION_IS_JSP);

	return Boolean.valueOf(value);
	}

	/**
	* Gets conversation supports property.
	* @return true if supports
	*/
	public boolean supportsConversation()
	{
	String value = getProperty(APPLICATION_SUPPORTS_CONVERSATION);

	return Boolean.valueOf(value);
	}

	/**
	* Flag which indicates that only jars with an explicit META-INF/beans.xml marker file shall get paresed.
	* Default is {@code false}
	*/
	public boolean scanOnlyBeansXmlJars()
	{
	String value = getProperty(SCAN_ONLY_BEANS_XML_JARS);
	return "true".equalsIgnoreCase(value);
	}

	/**
	* Flag which indicates that programmatic invocations to vaious BeanManager methods
	* should get strictly validated.
	* E.g. whether qualifier parameters are really qualifiers, etc.
	* Default is {@code false}
	*/
	public boolean strictDynamicValidation()
	{
	String value = getProperty(STRICT_DYNAMIC_VALIDATION);
	return "true".equalsIgnoreCase(value);
	}

	public synchronized Set<String> getIgnoredInterfaces()
	{
	if (ignoredInterfaces == null)
	{
	ignoredInterfaces = getPropertyList(IGNORED_INTERFACES);
	}
	return ignoredInterfaces;
	}

	public synchronized Set<String> getIgnoredExtensions()
	{
	if (ignoredExtensions == null)
	{
	ignoredExtensions = getPropertyList(IGNORED_EXTENSIONS);
	}
	return ignoredExtensions;
	}

	private Set<String> getPropertyList(String configKey)
	{
	String configValue = getProperty(configKey);
	if (configValue != null)
	{
	return new HashSet<>(Arrays.asList(configValue.split("[,\\p{javaWhitespace}]")));
	}
	return Collections.emptySet();
	}

	/**
	* Scan all openwebbeans.properties files + system properties +
	* syste.env for the given key.
	* If the key is comma separated then use the separate tokens.
	* All the values get put into a big set.
	*/
	public synchronized Set<String> getConfigListValues(String keyName)
	{
	Set<String> allValues = configuredLists.get(keyName);
	if (allValues != null)
	{
	return allValues;
	}

	allValues = new HashSet<>();
	try
	{
	List<Properties> properties = PropertyLoader.loadAllProperties(DEFAULT_CONFIG_PROPERTIES_NAME);
	if (properties != null)
	{
	for (Properties property : properties)
	{
	String values = (String) property.get(keyName);
	allValues.addAll(splitValues(values));
	}
	}
	}
	catch (IOException e)
	{
	logger.log(Level.SEVERE, "Error while loading the propertyFile " + DEFAULT_CONFIG_PROPERTIES_NAME, e);
	return Collections.EMPTY_SET;
	}

	// search for the key in the properties
	String value = System.getProperty(keyName);
	allValues.addAll(splitValues(value));

	// search for the key in the environment
	String envKeyName = keyName.toUpperCase().replace(".", "_");
	value = System.getenv(envKeyName);
	allValues.addAll(splitValues(value));

	configuredLists.put(keyName, allValues);

	return allValues;
	}

	/**
	* Add a configuration value to the Set of configured values registered
	* under the keyName.
	*
	* Calling this method ensures that all the configured values are first
	* read from the environment and configuration properties.
	*
	* @see #getConfigListValues(String) get's called internally to insure the list is initialised
	*/
	public synchronized void addConfigListValue(String keyName, String value)
	{
	Set<String> configListValues = getConfigListValues(keyName);
	configListValues.add(value);
	}

	public boolean supportsInterceptionOnProducers()
	{
	return Boolean.parseBoolean(getProperty(PRODUCER_INTERCEPTION_SUPPORT, "true"));
	}

	public String getGeneratorJavaVersion()
	{
	String generatorJavaVersion = getProperty(GENERATOR_JAVA_VERSION);
	if (generatorJavaVersion == null \|\| AUTO_CONFIG.equals(generatorJavaVersion))
	{
	return System.getProperty("java.version");
	}

	return generatorJavaVersion;
	}
	}