Configuration data is read from an XML file, whose location is given by
- * the moa.id.configuration system property.
This class implements the Singleton pattern. The reload()
- * method can be used to update the configuration data. Therefore, it is not
- * guaranteed that consecutive calls to getInstance() will return
- * the same ProxyConfigurationProvider all the time. During the
- * processing of a web service request, the current
- * TransactionContext should be used to obtain the
- * ProxyConfigurationProvider local to that request.
null, if none has been created. */
- private static ProxyConfigurationProvider instance;
-
- /**
- * main configuration file directory name used to configure MOA-ID
- */
- private String rootConfigFileDir;
-
- //
- // configuration data
- //
- /**
- * connection parameters for connection to MOA ID Auth component
- */
- private ConnectionParameter authComponentConnectionParameter;
- /**
- * configuration parameters for online applications
- */
- private OAProxyParameter[] onlineApplicationProxyParameter;
-
- /**
- * Return the single instance of configuration data.
- *
- * @return ProxyConfigurationProvider The current configuration data.
- * @throws ConfigurationException
- */
- public static synchronized ProxyConfigurationProvider getInstance()
- throws ConfigurationException {
-
- if (instance == null) {
- reload();
- }
- return instance;
- }
-
- /**
- * Reload the configuration data and set it if successful.
- *
- * @return ProxyConfigurationProvider The loaded configuration data.
- * @throws ConfigurationException Failure to load the configuration data.
- */
- public static synchronized ProxyConfigurationProvider reload()
- throws ConfigurationException {
- String fileName = System.getProperty(CONFIG_PROPERTY_NAME);
- if (fileName == null) {
- throw new ConfigurationException("config.01", null);
- }
- Logger.info("Loading MOA-ID-PROXY configuration " + fileName);
-
- instance = new ProxyConfigurationProvider(fileName);
- return instance;
- }
-
- /**
- * Constructor for ProxyConfigurationProvider.
- */
- public ProxyConfigurationProvider(String fileName)
- throws ConfigurationException {
-
- load(fileName);
- }
-
- /**
- * Load the configuration data from XML file with the given name and build
- * the internal data structures representing the MOA configuration.
- *
- * @param fileName The name of the XML file to load.
- * @throws ConfigurationException The MOA configuration could not be
- * read/built.
- */
- private void load(String fileName) throws ConfigurationException {
- FileInputStream stream = null;
- Element configElem;
- ConfigurationBuilder builder;
-
- try {
- // load the main config file
- stream = new FileInputStream(fileName);
- configElem = DOMUtils.parseXmlValidating(stream);
- }
- catch (Throwable t) {
- throw new ConfigurationException("config.03", null, t);
- }
- finally {
- try {
- if (stream != null) {
- stream.close();
- }
- }
- catch (IOException e) {
- }
- }
- try {
- // determine the directory of the root config file
- rootConfigFileDir = new File(fileName).getParent();
- try {
- rootConfigFileDir = new File(rootConfigFileDir).toURL().toString();
- } catch (MalformedURLException t) {
- throw new ConfigurationException("config.03", null, t);
- }
-
- // build the internal datastructures
- builder = new ConfigurationBuilder(configElem, rootConfigFileDir);
- authComponentConnectionParameter = builder.buildAuthComponentConnectionParameter();
-
- onlineApplicationProxyParameter = builder.buildOnlineApplicationProxyParameters();
- for(int i = 0; i < onlineApplicationProxyParameter.length; i++) {
- onlineApplicationProxyParameter[i].setConfigFileURL(FileUtils.makeAbsoluteURL(onlineApplicationProxyParameter[i].getConfigFileURL(), rootConfigFileDir));
- }
-
- genericConfiguration = builder.buildGenericConfiguration();
- defaultChainingMode = builder.getDefaultChainingMode();
- chainingModes = builder.buildChainingModes();
- trustedCACertificates = builder.getTrustedCACertificates();
- trustedCACertificates = FileUtils.makeAbsoluteURL(trustedCACertificates, rootConfigFileDir);
-
- }
- catch (Throwable t) {
- throw new ConfigurationException("config.02", null, t);
- }
- }
-
- /**
- * Return a bean containing all information about the ProxyComponent
- * @return The ConnectionParameter for the Proxy Component
- */
- public ConnectionParameter getAuthComponentConnectionParameter() {
- return authComponentConnectionParameter;
- }
-
- /**
- * Build an array of OnlineApplication Parameter Beans containing all
- * information about the proxy component of the online application
- * @return An OAProxyParameter array containing beans
- * with all relevant information for the proxy component of the online
- * application
- */
- public OAProxyParameter[] getOnlineApplicationParameters() {
- return onlineApplicationProxyParameter;
- }
- /**
- * Provides configuration information regarding the online application behind
- * the given URL, relevant to the MOA-ID Proxy component.
- *
- * @param oaURL URL requested for an online application
- * @return an OAProxyParameter, or null
- * if none is applicable
- */
- public OAProxyParameter getOnlineApplicationParameter(String oaURL) {
- OAProxyParameter[] oaParams = getOnlineApplicationParameters();
- for (int i = 0; i < oaParams.length; i++) {
- OAProxyParameter oaParam = oaParams[i];
- if (oaURL.startsWith(oaParam.getPublicURLPrefix()))
- return oaParam;
- }
- return null;
- }
-
-}
\ No newline at end of file
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