/** Try to convert a string value into a numerical value. */
private static Number createNumberFromStringValue(String value) throws NumberFormatException {
final String suffix = value.substring(value.length() - 1);
if ("L".equalsIgnoreCase(suffix)) {
return Long.valueOf(value.substring(0, value.length() - 1));
}
if ("F".equalsIgnoreCase(suffix)) {
return Float.valueOf(value.substring(0, value.length() - 1));
}
if ("D".equalsIgnoreCase(suffix)) {
return Double.valueOf(value.substring(0, value.length() - 1));
}
try {
return Integer.valueOf(value);
} catch (NumberFormatException e) {
// OK: Ignore exception...
}
try {
return Long.valueOf(value);
} catch (NumberFormatException e1) {
// OK: Ignore exception...
}
try {
return Double.valueOf(value);
} catch (NumberFormatException e2) {
// OK: Ignore exception...
}
throw new NumberFormatException(
"Cannot convert string value '" + value + "' into a numerical value");
}
@Diagnostic(name = "Queue Size")
public DiagnosticsResult queueSizes() throws JMSException, MalformedURLException {
List<String> queueNameList = queueNamesList(diagnosticConfiguration.activeMqQueueNames());
if (!queueNameList.isEmpty() && activeMQDiagnosticsClientConnector == null) {
return new DiagnosticsResult(
"ActiveMQ Queue Sizes", "activeMQDiagnosticsClientConnector bean not defined", Warn);
}
if (queueNameList.isEmpty()) {
return new DiagnosticsResult(
"ActiveMQ Queue Sizes", "No activeMQ.queueNames specified.", Warn);
}
List<DiagnosticsResult> results = new ArrayList<>();
for (String queueName : queueNameList) {
try {
ObjectName objectNameRequest =
new ObjectName(
"org.apache.activemq:BrokerName=localhost,Type=Queue,Destination=" + queueName);
Long queueSize =
(Long)
activeMQDiagnosticsClientConnector
.getObject()
.getAttribute(objectNameRequest, "QueueSize");
if (queueSize == null) {
results.add(new DiagnosticsResult("Queue Size for " + queueName, "Not Found!", Fail));
} else {
results.add(
new DiagnosticsResult("Queue Size for " + queueName, queueSize.toString(), Success));
}
} catch (Exception e) {
return new DiagnosticsResult(queueName, "Error occurred while connecting", Fail);
}
}
return new DiagnosticsResult("ActiveMQ Queue Sizes", results);
}