private boolean isGroupAvailable(final WmiAgentState agentState, final Wpm wpm) {
LOG.debug(
"Checking availability of group {} via object {} of class {} in namespace {}",
wpm.getName(),
wpm.getKeyvalue(),
wpm.getWmiClass(),
wpm.getWmiNamespace());
WmiManager manager = null;
/*
* We provide a bogus comparison value and use an operator of "NOOP"
* to ensure that, regardless of results, we receive a result and perform
* no logic. We're only validating that the agent is reachable and gathering
* the result objects.
*/
try {
// Get and initialize the WmiManager
manager = agentState.getManager();
manager.setNamespace(wpm.getWmiNamespace());
manager.init();
final WmiParams params =
new WmiParams(
WmiParams.WMI_OPERATION_INSTANCEOF,
"not-applicable",
"NOOP",
wpm.getWmiClass(),
wpm.getKeyvalue());
final WmiResult result = manager.performOp(params);
final boolean isAvailable = (result.getResultCode() == WmiResult.RES_STATE_OK);
agentState.setGroupIsAvailable(wpm.getName(), isAvailable);
LOG.debug("Group {} is {}{}.", wpm.getName(), (isAvailable ? "" : "not "), "available");
} catch (final WmiException e) {
// Log a warning signifying that this group is unavailable.
LOG.warn("Error checking group ({}) availability.", wpm.getName(), e);
// Set the group as unavailable.
agentState.setGroupIsAvailable(wpm.getName(), false);
// And then continue on to check the next wpm entry.
return false;
} finally {
if (manager != null) {
try {
manager.close();
} catch (WmiException e) {
LOG.warn("An error occurred closing the WMI Manager", e);
}
}
}
return true;
}
/**
* performInstanceOf
*
* @param params a {@link org.opennms.protocols.wmi.WmiParams} object.
* @return a {@link org.opennms.protocols.wmi.WmiResult} object.
* @throws org.opennms.protocols.wmi.WmiException if any.
*/
public WmiResult performInstanceOf(final WmiParams params) throws WmiException {
final ArrayList<Object> wmiObjects = new ArrayList<Object>();
final OnmsWbemObjectSet wos = m_WmiClient.performInstanceOf(params.getWmiClass());
for (int i = 0; i < wos.count(); i++) {
wmiObjects.add(wos.get(i).getWmiProperties().getByName(params.getWmiObject()).getWmiValue());
}
final WmiResult result = new WmiResult(wmiObjects);
if (params.getCompareOperation().equals("NOOP")) {
result.setResultCode(WmiResult.RES_STATE_OK);
} else if (params.getCompareOperation().equals("EQ")
|| params.getCompareOperation().equals("NEQ")
|| params.getCompareOperation().equals("GT")
|| params.getCompareOperation().equals("LT")) {
performResultCheck(result, params);
} else {
result.setResultCode(WmiResult.RES_STATE_UNKNOWN);
}
return result;
}
private void performResultCheck(final WmiResult wmiResult, final WmiParams params)
throws WmiException {
final ArrayList<Object> wmiObjects = wmiResult.getResponse();
int matches = 0;
final int total = wmiObjects.size();
for (int i = 0; i < total; i++) {
final Object wmiObj = wmiObjects.get(i);
final WmiMgrOperation op = WmiMgrOperation.valueOf(params.getCompareOperation());
if (op.compareString(wmiObj, (String) params.getCompareValue())) {
matches++;
}
}
/*
* Check that we meet the match requirements:
* - all: all objects must match, one or more.
* - none: no objects must match
* - one: only one object must match
* - some: one or more objects but not all objects must match.
*/
if (m_MatchType.equals("all") && matches == total && matches > 0) {
wmiResult.setResultCode(WmiResult.RES_STATE_OK);
} else if (m_MatchType.equals("none") && matches == 0) {
wmiResult.setResultCode(WmiResult.RES_STATE_OK);
} else if (m_MatchType.equals("one") && matches == 1) {
wmiResult.setResultCode(WmiResult.RES_STATE_OK);
} else if (m_MatchType.equals("some") && matches >= 1) {
// we want to match more than one but not all.
if (matches != total) {
wmiResult.setResultCode(WmiResult.RES_STATE_OK);
} else {
wmiResult.setResultCode(WmiResult.RES_STATE_CRIT);
}
} else {
wmiResult.setResultCode(WmiResult.RES_STATE_CRIT);
}
}