private static void populateMetricsAndOperations(
List<Class<?>> classes, Props props, boolean withNamePrefix) throws Exception {
props.setHasOperations(true);
props.setHasMetrics(true);
for (Class<?> clazz : classes) {
MBean mbean = clazz.getAnnotation(MBean.class);
String prefix = withNamePrefix ? mbean.objectName() + '.' : "";
CtClass ctClass = classPool.get(clazz.getName());
CtMethod[] ctMethods = ctClass.getMethods();
for (CtMethod ctMethod : ctMethods) {
ManagedAttribute managedAttr =
(ManagedAttribute) ctMethod.getAnnotation(ManagedAttribute.class);
ManagedOperation managedOp =
(ManagedOperation) ctMethod.getAnnotation(ManagedOperation.class);
Metric rhqMetric = (Metric) ctMethod.getAnnotation(Metric.class);
if (rhqMetric != null) {
debug("Metric annotation found " + rhqMetric);
// Property and description resolution are the reason why annotation scanning is done
// here.
// These two fields are calculated from either the method name or the Managed*
// annotations,
// and so, only the infinispan side knows about that.
String property = prefix + getPropertyFromBeanConvention(ctMethod);
if (!rhqMetric.property().isEmpty()) {
property = prefix + rhqMetric.property();
}
MetricProps metric = new MetricProps(property);
String displayName =
withNamePrefix
? "[" + mbean.objectName() + "] " + rhqMetric.displayName()
: rhqMetric.displayName();
metric.setDisplayName(displayName);
metric.setDisplayType(rhqMetric.displayType());
metric.setDataType(rhqMetric.dataType());
metric.setUnits(rhqMetric.units());
if (managedAttr != null) {
debug("Metric has ManagedAttribute annotation " + managedAttr);
metric.setDescription(managedAttr.description());
} else if (managedOp != null) {
debug("Metric has ManagedOperation annotation " + managedOp);
metric.setDescription(managedOp.description());
} else {
log.debug(
"Metric has no managed annotations, so take the description from the display name.");
metric.setDescription(rhqMetric.displayName());
}
props.getMetrics().add(metric);
}
Operation rhqOperation = (Operation) ctMethod.getAnnotation(Operation.class);
if (rhqOperation != null) {
debug("Operation annotation found " + rhqOperation);
String name;
if (!rhqOperation.name().isEmpty()) {
name = prefix + rhqOperation.name();
} else {
name = prefix + ctMethod.getName();
}
OperationProps operation = new OperationProps(name);
String displayName =
withNamePrefix
? "[" + mbean.objectName() + "] " + rhqOperation.displayName()
: rhqOperation.displayName();
operation.setDisplayName(displayName);
if (managedAttr != null) {
debug("Operation has ManagedAttribute annotation " + managedAttr);
operation.setDescription(managedAttr.description());
} else if (managedOp != null) {
debug("Operation has ManagedOperation annotation " + managedOp);
operation.setDescription(managedOp.description());
} else {
debug(
"Operation has no managed annotations, so take the description from the display name.");
operation.setDescription(rhqOperation.displayName());
}
Object[][] paramAnnotations = ctMethod.getParameterAnnotations();
int i = 0;
for (Object[] paramAnnotationsInEach : paramAnnotations) {
boolean hadParameter = false;
for (Object annot : paramAnnotationsInEach) {
debug("Parameter annotation " + annot);
if (annot instanceof Parameter) {
Parameter param = (Parameter) annot;
SimpleProperty prop = new SimpleProperty(param.name());
prop.setDescription(param.description());
operation.getParams().add(prop);
hadParameter = true;
}
}
if (!hadParameter) {
operation.getParams().add(new SimpleProperty("p" + i++));
}
}
CtClass returnType = ctMethod.getReturnType();
if (!returnType.equals(CtClass.voidType)) {
if (!returnType.equals(Void.TYPE)) {
SimpleProperty prop = new SimpleProperty("operationResult");
operation.setResult(prop);
}
}
props.getOperations().add(operation);
}
}
CtField[] ctFields = ctClass.getDeclaredFields();
for (CtField ctField : ctFields) {
debug("Inspecting field " + ctField);
Metric rhqMetric = (Metric) ctField.getAnnotation(Metric.class);
if (rhqMetric != null) {
debug("Field " + ctField + " contains Metric annotation " + rhqMetric);
String property;
if (!rhqMetric.property().isEmpty()) {
property = prefix + rhqMetric.property();
} else {
property = prefix + getPropertyFromBeanConvention(ctField);
}
MetricProps metric = new MetricProps(property);
String displayName =
withNamePrefix
? "[" + mbean.objectName() + "] " + rhqMetric.displayName()
: rhqMetric.displayName();
metric.setDisplayName(displayName);
metric.setDisplayType(rhqMetric.displayType());
metric.setDataType(rhqMetric.dataType());
metric.setUnits(rhqMetric.units());
ManagedAttribute managedAttr =
(ManagedAttribute) ctField.getAnnotation(ManagedAttribute.class);
if (managedAttr != null) {
debug("Metric has ManagedAttribute annotation " + managedAttr);
metric.setDescription(managedAttr.description());
} else {
log.debug(
"Metric has no managed annotations, so take the description from the display name.");
metric.setDescription(rhqMetric.displayName());
}
props.getMetrics().add(metric);
}
}
}
}