@Override
public void init(ServletConfig servletConfig) throws ServletException {
super.init(servletConfig);
NcwmsConfig config;
/*
* Set the default dataset factory - will be used when a dataset factory
* name is not specified
*/
DatasetFactory.setDefaultDatasetFactoryClass(CdmGridDatasetFactory.class);
/*
* Load the XML config for ncWMS, or create it if it doesn't yet exist.
*/
Properties appProperties = new Properties();
String configDir = null;
String homeDir = System.getProperty("user.home").replace("\\", "\\\\");
try {
/*
* See if we have a properties file which defines a configDir,
* replacing $HOME with the actual home directory
*/
appProperties.load(getClass().getResourceAsStream("/config.properties"));
configDir = appProperties.getProperty("configDir");
if (configDir != null) {
configDir = configDir.replaceAll("\\$HOME", homeDir);
}
} catch (Exception e) {
configDir = null;
e.printStackTrace();
}
/*
* If we didn't define a config directory, use the user's home as a
* default
*/
if (configDir == null) {
configDir = homeDir + File.separator + ".ncWMS-edal";
}
/*
* If the config location doesn't exist, create it.
*/
File configDirFile = new File(configDir);
if (!configDirFile.exists()) {
configDirFile.mkdirs();
}
DatasetFactory.setWorkingDirectory(configDirFile);
/*
* If necessary, create a directory for logs.
*/
File logDirFile = new File(configDir + File.separator + "logs");
if (!logDirFile.exists()) {
logDirFile.mkdir();
}
/*
* Get the file appending logger and set the log location
*/
// Set up the log4j logging system
Properties logProps = new Properties();
InputStream log4jInputStream = getClass().getResourceAsStream("/log4j.properties");
try {
logProps.load(log4jInputStream);
logProps.put("log4j.appender.file.File", logDirFile.getPath() + File.separator + "ncwms.log");
PropertyConfigurator.configure(logProps);
} catch (IOException e) {
log.error("Problem setting logging properties", e);
/*
* This is a problem, but not a fatal one. Logging will go to its default location.
*/
}
/*
* Now either create or read the ncWMS config.xml
*/
File configFile = new File(configDir + File.separator, "config.xml");
try {
if (configFile.exists()) {
config = NcwmsConfig.readFromFile(configFile);
} else {
config = new NcwmsConfig(configFile);
}
} catch (JAXBException e) {
log.error("Config file is invalid - creating new one", e);
try {
config = new NcwmsConfig(configFile);
} catch (Exception e1) {
throw new ServletException("Old config is invalid, and a new one cannot be created", e1);
}
} catch (FileNotFoundException e) {
/*
* We shouldn't get here. It means that we've checked that a config
* file exists and then the FileReader has thrown a
* FileNotFoundException
*/
log.error(
"Cannot find config file - has it been deleted during startup? Creating new one", e);
try {
config = new NcwmsConfig(configFile);
} catch (Exception e1) {
throw new ServletException("Old config is missing, and a new one cannot be created", e1);
}
} catch (IOException e) {
log.error("Problem writing new config file", e);
throw new ServletException("Cannot create a new config file", e);
}
try {
catalogue = new NcwmsCatalogue(config);
} catch (IOException e) {
log.error("Problem loading datasets", e);
}
/*
* Store the config in the ServletContext, so that the other servlets
* can access it. All other servlets are loaded after this one.
*/
servletConfig.getServletContext().setAttribute("NcwmsCatalogue", catalogue);
/*
* Now create a VelocityEngine to load velocity templates, and make it
* available to other servlets in the same way
*/
Properties props = new Properties();
props.put("resource.loader", "class");
props.put(
"class.resource.loader.class",
"org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
velocityEngine = new VelocityEngine();
velocityEngine.setProperty(
RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS,
"org.apache.velocity.runtime.log.Log4JLogChute");
velocityEngine.setProperty("runtime.log.logsystem.log4j.logger", "velocity");
velocityEngine.init(props);
servletConfig.getServletContext().setAttribute("VelocityEngine", velocityEngine);
}
