/** This is the default constructor. */
public JEEMonitor() {
try {
InitialContext ctx = new InitialContext();
_acmManager = (ActiveCollectionManager) ctx.lookup(ACM_MANAGER);
_responseTimesProcessed =
(ActiveList) _acmManager.getActiveCollection(RESPONSE_TIMES_PROCESSED);
_responseTimesProcessed.addActiveChangeListener(this);
} catch (Exception e) {
LOG.log(Level.SEVERE, "Failed to initialize active collection manager", e);
}
}
/**
* This method handles queries.
*
* @param width The optional width
* @return The list of objects
* @throws Exception Failed to query
*/
@GET
@Path("/overview")
@Produces("image/svg+xml")
public String overview(@DefaultValue("0") @QueryParam("width") int width) throws Exception {
String ret = "";
// Obtain service definition collection
if (_acmManager != null && _servDefns == null) {
_servDefns = _acmManager.getActiveCollection("ServiceDefinitions");
}
if (_acmManager != null && _situations == null) {
_situations = _acmManager.getActiveCollection("Situations");
}
if (_servDefns == null) {
throw new Exception("Service definitions are not available");
}
if (_situations == null) {
throw new Exception("Situations are not available");
}
java.util.Set<ServiceDefinition> sds = new java.util.HashSet<ServiceDefinition>();
for (Object entry : _servDefns) {
if (entry instanceof ActiveMap.Entry
&& ((ActiveMap.Entry) entry).getValue() instanceof ServiceDefinition) {
sds.add((ServiceDefinition) ((ActiveMap.Entry) entry).getValue());
}
}
java.util.List<Situation> situations = new java.util.ArrayList<Situation>();
for (Object obj : _situations) {
if (obj instanceof Situation) {
situations.add((Situation) obj);
}
}
ServiceGraph graph = ServiceDependencyBuilder.buildGraph(sds, situations);
if (graph == null) {
throw new Exception("Failed to generate service dependency overview");
}
graph.setDescription("Generated: " + new java.util.Date());
ServiceGraphLayoutImpl layout = new ServiceGraphLayoutImpl();
layout.layout(graph);
// Check some of the dimensions
SVGServiceGraphGenerator generator = new SVGServiceGraphGenerator();
MVELColorSelector selector = new MVELColorSelector();
selector.setScriptLocation("ColorSelector.mvel");
try {
selector.init();
generator.setColorSelector(selector);
} catch (Exception e) {
LOG.log(
Level.SEVERE,
java.util.PropertyResourceBundle.getBundle("service-dependency-rests.Messages")
.getString("SERVICE-DEPENDENCY-RESTS-2"),
e);
}
java.io.ByteArrayOutputStream os = new java.io.ByteArrayOutputStream();
generator.generate(graph, width, os);
os.close();
ret = new String(os.toByteArray());
if (LOG.isLoggable(Level.FINEST)) {
LOG.finest("Overview=" + ret);
}
return (ret);
}