/**
* Initializes the TeaServlet. Creates the logger and loads the user's application.
*
* @param config the servlet config
*/
public void init(ServletConfig config) throws ServletException {
super.init(config);
mServletConfig = config;
config.getServletContext().log("Initializing TeaServlet...");
String ver = System.getProperty("java.version");
if (ver.startsWith("0.") || ver.startsWith("1.2") || ver.startsWith("1.3")) {
config.getServletContext().log("The TeaServlet requires Java 1.4 or higher to run properly");
}
mServletContext = setServletContext(config);
mServletName = setServletName(config);
mProperties = new PropertyMap();
mSubstitutions = SubstitutionFactory.getDefaults();
mResourceFactory = new TeaServletResourceFactory(config.getServletContext(), mSubstitutions);
Enumeration<?> e = config.getInitParameterNames();
while (e.hasMoreElements()) {
String key = (String) e.nextElement();
String value = SubstitutionFactory.substitute(config.getInitParameter(key));
if (key.equals("debug")) {
mDebugEnabled = Boolean.parseBoolean(value);
continue;
}
mProperties.put(key, value);
}
loadDefaults();
discoverProperties();
createListeners();
createLog(mServletContext);
mLog.applyProperties(mProperties.subMap("log"));
createMemoryLog(mLog);
mInstrumentationEnabled = mProperties.getBoolean("instrumentation.enabled", true);
Initializer initializer = new Initializer();
if (mProperties.getBoolean("startup.background", false)) {
mInitializer = Executors.newSingleThreadExecutor().submit(initializer);
} else {
initializer.call();
}
}
@SuppressWarnings("unchecked")
private void loadDefaults(PropertyMap properties, Set<String> files) throws Exception {
// update substitutions if provided
PropertyMap substitutions = properties.subMap("substitutions");
if (substitutions != null && substitutions.size() > 0) {
PropertyMap subs = SubstitutionFactory.getSubstitutions(substitutions, mResourceFactory);
if (subs != null) {
mSubstitutions.putAll(subs);
}
properties.remove("substitutions");
}
// Get file and perform substitution of env variables/system props
String fileName = properties.getString("properties.file");
if (mDebugEnabled) {
mServletContext.log("properties.file: " + fileName);
}
if (fileName != null) {
fileName = SubstitutionFactory.substitute(fileName, mSubstitutions);
}
// parse file if not yet parsed
if (fileName != null && !files.contains(fileName)) {
// Prevent properties file cycle.
files.add(fileName);
// load properties
PropertyMap props = mResourceFactory.getResourceAsProperties(fileName);
if (props != null) {
properties.putAll(props);
}
loadDefaults(properties, files);
} else {
PropertyMap factoryProps = properties.subMap("properties.factory");
if (factoryProps != null && factoryProps.size() > 0) {
PropertyMap map = loadProperties(factoryProps);
properties.putAll(map);
}
}
}