private List<String> createTreeForStatsProvider(TreeNode parentNode, Object statsProvider) {
/* construct monitoring tree at PluginPoint using subTreePath */
List<String> childNodeNames = new ArrayList();
/* retrieve ManagedAttribute attribute id (v2 compatible) and method names */
/* Check for custom reset method and store for later to be called instead of
standard reset methods on Statistic classes*/
for (Method m : statsProvider.getClass().getMethods()) {
ManagedAttribute ma = m.getAnnotation(ManagedAttribute.class);
Reset resetMeth = m.getAnnotation(Reset.class);
if (resetMeth != null) {
StatsProviderRegistryElement spre =
this.statsProviderRegistry.getStatsProviderRegistryElement(statsProvider);
spre.setResetMethod(m);
}
if (ma != null) {
String methodName = m.getName();
String id = ma.id();
if ((id == null) || id.isEmpty()) { // if id not specified, derive from method name
String methodNameLower = methodName.toLowerCase(Locale.ENGLISH);
if (methodNameLower.startsWith("get") && methodNameLower.length() > 3) {
id = methodNameLower.substring(3);
}
}
TreeNode attrNode = TreeNodeFactory.createMethodInvoker(id, statsProvider, id, m);
parentNode.addChild(attrNode);
childNodeNames.add(attrNode.getName());
}
}
return childNodeNames;
}
private void updateTreeNodes(StatsProviderRegistryElement spre, boolean enable) {
// Enable/Disable the child TreeNodes
String parentNodePath = spre.getParentTreeNodePath();
List<String> childNodeNames = spre.getChildTreeNodeNames();
TreeNode rootNode = mrdr.get(instanceName);
if (rootNode != null) {
// This has to return one node
List<TreeNode> nodeList = rootNode.getNodes(parentNodePath, false, true);
TreeNode parentNode = nodeList.get(0);
// For each child Node, enable it
Collection<TreeNode> childNodes = parentNode.getChildNodes();
boolean hasUpdatedNode = false;
for (TreeNode childNode : childNodes) {
if (childNodeNames.contains(childNode.getName())) {
// Enabling or Disabling the child node (based on enable flag)
if (childNode.isEnabled() != enable) {
childNode.setEnabled(enable);
hasUpdatedNode = true;
}
}
}
if (!hasUpdatedNode) return;
// Make sure the tree path is affected with the changes.
if (enable) {
enableTreeNode(parentNode);
} else {
disableTreeNode(parentNode);
}
}
}
public void unregister(Object statsProvider) {
// Unregisters the statsProvider
try {
StatsProviderRegistryElement spre =
statsProviderRegistry.getStatsProviderRegistryElement(statsProvider);
if (spre == null) {
logger.log(
Level.INFO, invalidStatsProvider, new Object[] {statsProvider.getClass().getName()});
return;
}
// get the Parent node and delete all children nodes (only that we know of)
String parentNodePath = spre.getParentTreeNodePath();
List<String> childNodeNames = spre.getChildTreeNodeNames();
TreeNode rootNode = mrdr.get(instanceName);
if ((rootNode != null) && (parentNodePath != null)) {
// This has to return one node
List<TreeNode> nodeList = rootNode.getNodes(parentNodePath, false, true);
if (nodeList.size() > 0) {
TreeNode parentNode = nodeList.get(0);
// Remove each of the child nodes
Collection<TreeNode> childNodes = parentNode.getChildNodes();
for (TreeNode childNode : childNodes) {
if (childNodeNames.contains(childNode.getName())) {
parentNode.removeChild(childNode);
}
}
if (!parentNode.hasChildNodes()) removeParentNode(parentNode);
}
}
// get the handles and unregister the listeners from Flashlight
Collection<ProbeClientMethodHandle> handles = spre.getHandles();
if (handles != null) {
for (ProbeClientMethodHandle handle : handles) {
// handle.remove????? Mahesh?
// TODO IMPLEMENTATION
// For now disable the handle => remove the client from invokerlist
handle.disable();
}
}
// unregister the statsProvider from Gmbal
if (spre.getManagedObjectManager() != null) unregisterGmbal(spre);
// Unregister from the MonitoringDataTreeRegistry and the map entries
statsProviderRegistry.unregisterStatsProvider(statsProvider);
} catch (Exception ex) {
String msg =
MessageFormat.format(errorUnregisteringStatsProvider, statsProvider.getClass().getName());
logger.log(Level.SEVERE, msg, ex);
}
}
private void resetChildNodeStatistics(
String parentNodePath, List<String> childNodeNames, String statsProviderName) {
TreeNode rootNode = mrdr.get(instanceName);
if (rootNode != null) {
List<TreeNode> nodeList = rootNode.getNodes(parentNodePath, false, true);
if (nodeList.size() > 0) {
TreeNode parentNode = nodeList.get(0);
Collection<TreeNode> childNodes = parentNode.getChildNodes();
for (TreeNode childNode : childNodes) {
if (childNodeNames.contains(childNode.getName())) {
invokeStatisticResetMethod(childNode.getValue());
}
}
} else {
logger.log(Level.WARNING, nodeNotFound, new Object[] {parentNodePath, statsProviderName});
}
}
}