private void invokeRestCall(
HttpServletRequest request,
HttpServletResponse response,
WsOutbound clientStream,
WsOutbound provenanceStream)
throws IOException {
URL original = getURL(request);
String processed = request.getPathInfo();
processed = processed.substring(1);
final String modName = processed.substring(0, processed.indexOf('/'));
final String methodName = processed.substring(processed.indexOf('/') + 1);
log.debug("module name = " + modName);
log.debug("method name = " + methodName);
final Module module = ModuleManagerFactory.getInstance().getManager().getModuleByName(modName);
final ClientRequest logger =
new ClientRequest(
module.getClass().getName(),
request.getParameterMap(),
original,
clientStream,
provenanceStream,
ModuleManagerFactory.getInstance().getManager());
try {
Method m = getMethod(module, methodName);
logger.debug("Invoking " + methodName + " of " + modName);
final long start = System.currentTimeMillis();
String result = null;
if (m.isAnnotationPresent(QueryMethod.class)) {
result = (String) m.invoke(module, logger);
} else if (m.isAnnotationPresent(HierarchicalMethod.class)) {
result = invokeHierarchyMethod(response, logger, module, m);
} else {
response.sendError(HttpServletResponse.SC_FORBIDDEN, Messages.MODULE_INVALID);
return;
}
if (result == null) {
return;
}
log.debug("Response time: " + (System.currentTimeMillis() - start) + " ms");
logger.debug("Returning response to client");
PrintStream ps =
new PrintStream(
response.getOutputStream(), true, SemantEcoConfiguration.get().getEncoding());
ps.print(result);
ps.close();
} catch (SecurityException e) {
logger.error("Unable to execute specified method", e);
} catch (NoSuchMethodException e) {
response.sendError(HttpServletResponse.SC_FORBIDDEN, Messages.MODULE_INVALID);
logger.error("Invalid method", e);
} catch (IllegalArgumentException e) {
logger.error("Illegal argument", e);
} catch (IllegalAccessException e) {
logger.error("Illegal access", e);
} catch (InvocationTargetException e) {
logger.error("Invalid target for invocation", e);
}
}
private String invokeHierarchyMethod(
HttpServletResponse response, ClientRequest logger, Module module, Method m)
throws IOException, IllegalAccessException, InvocationTargetException {
Object mode = logger.getParam("mode");
if (!(mode instanceof String)) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, Messages.MODE_NOTVALID);
return null;
}
HierarchyVerb verb = null;
try {
verb = HierarchyVerb.valueOf((String) mode);
} catch (IllegalArgumentException e) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, Messages.MODE_NOTVALID);
return null;
}
@SuppressWarnings("unchecked")
Collection<HierarchyEntry> entries =
(Collection<HierarchyEntry>) m.invoke(module, logger, verb);
return serializeHierarchyEntries(entries);
}