@AfterReturning(pointcut = "updateSingles()", returning = "retVal")
public Object cacheUpdateSingles(final JoinPoint jp, final Object retVal) throws Throwable {
try {
doUpdate(jp, retVal);
} catch (Throwable ex) {
if (LOG.isDebugEnabled()) {
LOG.warn("Caching on " + jp.toShortString() + " aborted due to an error.", ex);
} else {
LOG.warn(
"Caching on " + jp.toShortString() + " aborted due to an error: " + ex.getMessage());
}
}
return retVal;
}
private void doUpdate(final JoinPoint jp, final Object retVal) throws Throwable {
if (isCacheDisabled()) {
LOG.debug("Caching is disabled.");
return;
}
final MemcachedClientIF cache = getMemcachedClient();
final Method methodToCache = getMethodToCache(jp);
List<UpdateSingleCache> lAnnotations;
if (methodToCache.getAnnotation(UpdateSingleCache.class) != null) {
lAnnotations = Arrays.asList(methodToCache.getAnnotation(UpdateSingleCache.class));
} else {
lAnnotations = Arrays.asList(methodToCache.getAnnotation(UpdateSingleCaches.class).value());
}
for (int i = 0; i < lAnnotations.size(); i++) {
// This is injected caching. If anything goes wrong in the caching, LOG the crap outta it,
// but do not let it surface up past the AOP injection itself.
try {
final AnnotationInfo info =
getAnnotationInfo(lAnnotations.get(i), methodToCache.getName(), getJitterDefault());
final String baseKey =
CacheBase.getBaseKey(
info.getAsString(AType.KEY_TEMPLATE),
info.getAsInteger(AType.KEY_INDEX, null),
retVal,
jp.getArgs(),
methodToCache.toString(),
factory,
methodStore);
final String cacheKey =
buildCacheKey(
baseKey, info.getAsString(AType.NAMESPACE), info.getAsString(AType.KEY_PREFIX));
Object dataObject =
getIndexObject(
info.getAsInteger(AType.DATA_INDEX, null),
retVal,
jp.getArgs(),
methodToCache.toString());
dataObject =
UpdateSingleCacheAdvice.getMergedData(
dataObject,
info.getAsString(AType.DATA_TEMPLATE, null),
retVal,
jp.getArgs(),
factory);
final Class dataTemplateType =
(Class) info.getAsType(AType.DATA_TEMPLATE_TYPE, String.class);
final Object submission =
(dataObject == null)
? new PertinentNegativeNull()
: applyDataTemplateType(dataObject, dataTemplateType);
boolean cacheable = true;
if (submission instanceof CacheConditionally) {
cacheable = ((CacheConditionally) submission).isCacheable();
}
if (cacheable) {
cache.set(
cacheKey,
calculateJitteredExpiration(
info.getAsInteger(AType.EXPIRATION), info.getAsInteger(AType.JITTER)),
submission);
}
// Notify the observers that a cache interaction happened.
final List<UpdateSingleCacheListener> listeners =
getPertinentListeners(
UpdateSingleCacheListener.class, info.getAsString(AType.NAMESPACE));
if (listeners != null && !listeners.isEmpty()) {
for (final UpdateSingleCacheListener listener : listeners) {
try {
listener.triggeredUpdateSingleCache(
info.getAsString(AType.NAMESPACE),
info.getAsString(AType.KEY_PREFIX, null),
baseKey,
dataObject,
retVal,
jp.getArgs());
} catch (Exception ex) {
LOG.warn("Problem when triggering a listener.", ex);
}
}
}
} catch (Exception ex) {
if (LOG.isDebugEnabled()) {
LOG.warn("Caching on " + jp.toShortString() + " aborted due to an error.", ex);
} else {
LOG.warn(
"Caching on " + jp.toShortString() + " aborted due to an error: " + ex.getMessage());
}
}
}
}