@Override
public boolean reduceLoad(ResourceNode node, int loadValue) throws MonitorException {
String nodeId = node.getNodeId();
if (this.loadMap.containsKey(nodeId)) {
int currLoad = loadMap.get(nodeId);
currLoad = Math.min(0, currLoad - loadValue);
this.loadMap.put(nodeId, currLoad);
} else {
this.loadMap.put(nodeId, 0);
}
return true;
}
@Override
public int getLoad(ResourceNode node) throws MonitorException {
Map<String, String> nodeProperties;
String nodeId = node.getNodeId();
nodeProperties = this.locateNode(nodeId);
if (nodeProperties == null) {
throw new MonitorException("GangliaMonitor: not tracking requested node: [" + nodeId + "]");
}
// calculate load
double calcLoad = this.loadCalculator.calculateLoad(nodeProperties);
System.out.println(calcLoad);
int load = Long.valueOf(Math.round(calcLoad)).intValue();
System.out.println("LOAD is: " + load);
return load;
}
@Override
public boolean assignLoad(ResourceNode node, int loadValue) throws MonitorException {
// technically this method should simply do nothing, since
// putting a job onto a node should cause Ganglia to detect
// for now we'll simply track what the current perceived load
// on a node is - we may want to factor this into the weighting
// in load calculator later
String nodeId = node.getNodeId();
if (loadMap.containsKey(nodeId)) {
int currLoad = loadMap.get(nodeId);
currLoad += loadValue;
loadMap.put(nodeId, currLoad);
} else {
loadMap.put(nodeId, loadValue);
}
return true;
}