package org.erlide.tracing.core.mvc.controller;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.erlide.backend.BackendCore;
import org.erlide.backend.api.IBackend;
import org.erlide.backend.api.IBackendManager;
import org.erlide.tracing.core.TraceBackend;
/**
* Helper class containing methods for dealing with traced nodes.
*
* @author Piotr Dorobisz
*
*/
public class NodeHelper {
private NodeHelper() {
}
/**
* Checks if node with given name was started from erlide or was started
* outside it (in this case it is considered as <i>external</i>).
*
* @param nodeName
* node name
* @return <code>true</code> if node was started outside erlide,
* <code>false</code> otherwise
*/
public static boolean isExternal(final String nodeName) {
for (final IBackend backend : getBackends(false)) {
if (backend.getName().equals(nodeName)) {
return false;
}
}
return true;
}
/**
* Returns backends managed by erlide. Depending on argument nodes
* irrelevant from user's point of view (tracing and ide backends) can be
* omitted in resulting list.
*
* @param ignore
* if nodes should be omitted
* @return list of backends
*/
public static Collection<? extends IBackend> getBackends(final boolean ignore) {
if (!ignore) {
return BackendCore.getBackendManager().getAllBackends();
}
final List<IBackend> backends = new ArrayList<IBackend>();
final IBackendManager backendManager = BackendCore.getBackendManager();
final Set<IBackend> ignored = new HashSet<IBackend>();
IBackend backend;
if ((backend = backendManager.getIdeBackend()) != null) {
ignored.add(backend);
}
if ((backend = TraceBackend.getInstance().getBackend(false)) != null) {
ignored.add(backend);
}
for (final IBackend erlideBackend : BackendCore.getBackendManager()
.getAllBackends()) {
if (!ignored.contains(erlideBackend)) {
backends.add(erlideBackend);
}
}
return backends;
}
}