/**
* Returns a copy of this ThresholdEntity object.
*
* <p>NOTE: The m_lowThreshold and m_highThreshold member variables are not actually cloned...the
* returned ThresholdEntity object will simply contain references to the same castor Threshold
* objects as the original ThresholdEntity object.
*
* <p>All state will be lost, particularly instances, so it's not a true clone by any stretch of
* the imagination
*
* @return a {@link org.opennms.netmgt.threshd.ThresholdEntity} object.
*/
public ThresholdEntity clone() {
ThresholdEntity clone = new ThresholdEntity();
for (ThresholdEvaluatorState thresholdItem : getThresholdEvaluatorStates(null)) {
clone.addThreshold(thresholdItem.getThresholdConfig());
}
return clone;
}
/**
* {@inheritDoc}
*
* <p>Responsible for performing all necessary initialization for the specified interface in
* preparation for thresholding.
*/
public void initialize(ThresholdNetworkInterface iface, Map<?, ?> parameters) {
// Get interface address from NetworkInterface
//
if (iface.getType() != NetworkInterface.TYPE_INET)
throw new RuntimeException("Unsupported interface type, only TYPE_INET currently supported");
InetAddress ipAddr = (InetAddress) iface.getAddress();
String groupName = ParameterMap.getKeyedString(parameters, "thresholding-group", "default");
// Get the threshold group's RRD repository path
//
String repository = null;
try {
repository = ThresholdingConfigFactory.getInstance().getRrdRepository(groupName);
} catch (IllegalArgumentException e) {
throw new RuntimeException("Thresholding group '" + groupName + "' does not exist.");
}
// Add RRD repository as an attribute of the interface for retrieval
// by the check() method.
//
iface.setAttribute(RRD_REPOSITORY_KEY, repository);
// Get database connection in order to retrieve the nodeid and
// ifIndex from the database for this interface.
//
java.sql.Connection dbConn = null;
final DBUtils d = new DBUtils(getClass());
try {
dbConn = DataSourceFactory.getInstance().getConnection();
d.watch(dbConn);
} catch (SQLException sqlE) {
if (log().isEnabledFor(ThreadCategory.Level.ERROR))
log().error("initialize: Failed getting connection to the database.", sqlE);
throw new UndeclaredThrowableException(sqlE);
}
// Use IP address to lookup the node id
//
// NOTE: All database calls wrapped in try/finally block so we make
// certain that the connection will be closed when we are
// finished.
//
int nodeId = -1;
final String hostAddress = InetAddressUtils.str(ipAddr);
try {
// Prepare & execute the SQL statement to get the 'nodeid',
// 'ifIndex' and 'isSnmpPrimary' fields from the ipInterface table.
//
PreparedStatement stmt = null;
try {
stmt = dbConn.prepareStatement(SQL_GET_NODEID);
d.watch(stmt);
stmt.setString(1, hostAddress); // interface address
ResultSet rs = stmt.executeQuery();
d.watch(rs);
if (rs.next()) {
nodeId = rs.getInt(1);
if (rs.wasNull()) nodeId = -1;
}
} catch (SQLException sqle) {
if (log().isDebugEnabled()) log().debug("initialize: SQL exception!!", sqle);
throw new RuntimeException(
"SQL exception while attempting to retrieve node id for interface " + hostAddress);
}
if (log().isDebugEnabled())
log()
.debug(
"initialize: db retrieval info: nodeid = " + nodeId + ", address = " + hostAddress);
if (nodeId == -1)
throw new RuntimeException("Unable to retrieve node id for interface " + hostAddress);
} finally {
d.cleanUp();
}
// Add nodeId as an attribute of the interface for retrieval
// by the check() method.
//
iface.setAttribute(NODE_ID_KEY, new Integer(nodeId));
// Retrieve the collection of Threshold objects associated with
// the defined thresholding group and build maps of
// ThresholdEntity objects keyed by datasource name. The
// datasource type of the threshold determines which
// map the threshold entity is added to.
//
// Each ThresholdEntity can wrap one high Threshold and one low
// Threshold castor-generated object for a single datasource.
// If more than one high or more than one low threshold is defined
// for a single datasource a warning messages is generated. Only
// the first threshold in such a scenario will be used for thresholding.
//
// Create empty map for storing threshold entities
Map<String, ThresholdEntity> thresholdMap = new HashMap<String, ThresholdEntity>();
try {
for (Basethresholddef thresh :
ThresholdingConfigFactory.getInstance().getThresholds(groupName)) {
// See if map entry already exists for this datasource
// If not, create a new one.
boolean newEntity = false;
ThresholdEntity thresholdEntity = null;
// All latency thresholds are per interface so confirm that
// the datasource type is set to "if"
//
if (!thresh.getDsType().equals("if") && !thresh.getDsType().equals("expr")) {
log()
.warn(
"initialize: invalid datasource type, latency thresholder only supports interface level datasources.");
continue; // continue with the next threshold...
}
try {
BaseThresholdDefConfigWrapper wrapper =
BaseThresholdDefConfigWrapper.getConfigWrapper(thresh);
// First attempt to lookup the entry in the map
thresholdEntity = thresholdMap.get(wrapper.getDatasourceExpression());
// Found entry?
if (thresholdEntity == null) {
// Nope, create a new one
newEntity = true;
thresholdEntity = new ThresholdEntity();
}
try {
thresholdEntity.addThreshold(wrapper);
} catch (IllegalStateException e) {
log()
.warn(
"Encountered duplicate "
+ thresh.getType()
+ " for datasource "
+ wrapper.getDatasourceExpression()
+ ": "
+ e,
e);
}
// Add new entity to the map
if (newEntity) {
thresholdMap.put(wrapper.getDatasourceExpression(), thresholdEntity);
}
} catch (ThresholdExpressionException e) {
log().warn("Could not parse threshold expression: " + e.getMessage(), e);
}
}
} catch (IllegalArgumentException e) {
throw new RuntimeException("Thresholding group '" + groupName + "' does not exist.");
}
// Add threshold maps as attributes for retrieval by the check() method.
//
iface.setAttribute(THRESHOLD_MAP_KEY, thresholdMap);
// Debug
//
if (log().isDebugEnabled()) {
log()
.debug(
"initialize: dumping interface thresholds defined for "
+ hostAddress
+ "/"
+ groupName
+ ":");
Iterator<ThresholdEntity> iter = thresholdMap.values().iterator();
while (iter.hasNext()) log().debug(iter.next().toString());
}
if (log().isDebugEnabled())
log().debug("initialize: initialization completed for " + hostAddress);
return;
}