/** {@inheritDoc} */
@Override
public CacheStatistics getStatistics() {
final CacheStatistics stats = CacheStatistics.get();
for (Entry<String, PVCache> entry : cachedPVs.entrySet())
stats.addPVStats(entry.getKey(), entry.getValue().getStatistics());
return stats;
}
/**
* Computes the status code for a given set of cache statistics.
*
* @param statistics Cache statistics.
* @return {@link StatusCode#WARN} if eviction count is above threshold or if percent free space
* is below threshold, otherwise {@link StatusCode#OK}.
*/
protected StatusCode status(final CacheStatistics statistics) {
final StatusCode code;
if (statistics.getEvictions() > this.evictionThreshold) {
code = StatusCode.WARN;
} else if (statistics.getPercentFree() < this.warnFreeThreshold) {
code = StatusCode.WARN;
} else {
code = StatusCode.OK;
}
return code;
}
@Override
public void clear(String namespace, Collection<String> keys) {
long startTime = System.currentTimeMillis();
CacheStatistics stats = null;
LOG.trace("clear(%s, %s)", namespace, keys);
if (cacheStatistics != null) {
stats = cacheStatistics.getCacheStatistics(namespace);
stats.incrementClears(keys.size());
}
provider.clear(namespace, keys, stats);
recordElapsedTime(
stats, startTime, keys.size(), CacheOperation.CLEAR_KEYS, CacheOperation.CLEAR_OPERATIONS);
}
@Override
public void set(String namespace, Collection<CacheStore<byte[]>> stores) {
long startTime = System.currentTimeMillis();
CacheStatistics stats = null;
LOG.trace("set(%s, %s)", namespace, stores);
if (cacheStatistics != null) {
stats = cacheStatistics.getCacheStatistics(namespace);
stats.incrementStores(stores.size());
}
provider.set(namespace, stores, stats);
recordElapsedTime(
stats,
startTime,
stores.size(),
CacheOperation.STORE_KEYS,
CacheOperation.STORE_OPERATIONS);
}
@Override
public Map<String, byte[]> get(String namespace, Collection<String> keys) {
long startTime = System.currentTimeMillis();
CacheStatistics stats = null;
if (cacheStatistics != null) {
stats = cacheStatistics.getCacheStatistics(namespace);
stats.incrementFetches(keys.size());
}
Map<String, byte[]> result = provider.get(namespace, keys, stats);
if (stats != null) {
stats.incrementHits(result.size());
}
recordElapsedTime(
stats, startTime, keys.size(), CacheOperation.FETCH_KEYS, CacheOperation.FETCH_OPERATIONS);
LOG.trace("get(%s, %s) hit %d", namespace, keys, result.size());
return result;
}
private void recordElapsedTime(
CacheStatistics stats,
long startTime,
int keyCount,
CacheOperation keysOperation,
CacheOperation callsOperation) {
if (stats != null) {
long elapsed = System.currentTimeMillis() - startTime;
stats.recordElapsedTime(elapsed, keyCount, keysOperation, callsOperation);
}
}
/**
* Builds the description string for the retrieved statistics.
*
* @param desc the desc
* @param statistics the statistics
* @return the string
*/
private static String buildDescription(final String desc, final CacheStatistics... statistics) {
if (statistics == null || statistics.length == 0) {
return desc;
}
final StringBuilder sb = new StringBuilder();
if (desc != null) {
sb.append(desc);
if (!desc.endsWith(".")) {
sb.append('.');
}
sb.append(' ');
}
sb.append("Cache statistics: [");
int i = 0;
for (final CacheStatistics stats : statistics) {
if (i++ > 0) {
sb.append('|');
}
stats.toString(sb);
}
sb.append(']');
return sb.toString();
}
protected void setContent(String value) throws SAXException {
if (insideCacheConfiguration) {
if ("clearOnFlush".equalsIgnoreCase(inside)) cc.setClearOnFlush(toBooleanValue(value, true));
else if ("diskExpiryThreadIntervalSeconds".equalsIgnoreCase(inside))
cc.setDiskExpiryThreadIntervalSeconds(toInt(value, 0));
else if ("diskPersistent".equalsIgnoreCase(inside))
cc.setDiskPersistent(toBooleanValue(value, false));
else if ("diskSpoolBufferSizeMB".equalsIgnoreCase(inside))
cc.setDiskSpoolBufferSize(toInt(value, 0) * 1024L * 1024L);
else if ("eternal".equalsIgnoreCase(inside)) cc.setEternal(toBooleanValue(value, false));
else if ("maxElementsInMemory".equalsIgnoreCase(inside))
cc.setMaxElementsInMemory(toInt(value, 0));
else if ("maxElementsOnDisk".equalsIgnoreCase(inside))
cc.setMaxElementsOnDisk(toInt(value, 0));
else if ("name".equalsIgnoreCase(inside)) cc.setName(value);
else if ("overflowToDisk".equalsIgnoreCase(inside))
cc.setOverflowToDisk(toBooleanValue(value, true));
else if ("timeToIdleSeconds".equalsIgnoreCase(inside))
cc.setTimeToIdleSeconds(toInt(value, 0));
else if ("timeToLiveSeconds".equalsIgnoreCase(inside))
cc.setTimeToLiveSeconds(toInt(value, 0));
} else if (insideStatistics) {
if ("averageGetTime".equalsIgnoreCase(inside)) cs.setAverageGetTime(toDoubleValue(value, 0));
else if ("cacheHits".equalsIgnoreCase(inside)) cs.setCacheHits(toInt(value, 0));
else if ("diskStoreSize".equalsIgnoreCase(inside)) cs.setDiskStoreSize(toInt(value, 0));
else if ("evictionCount".equalsIgnoreCase(inside)) cs.setEvictionCount(toInt(value, 0));
else if ("inMemoryHits".equalsIgnoreCase(inside)) cs.setInMemoryHits(toInt(value, 0));
else if ("memoryStoreSize".equalsIgnoreCase(inside)) cs.setMemoryStoreSize(toInt(value, 0));
else if ("misses".equalsIgnoreCase(inside)) cs.setMisses(toInt(value, 0));
else if ("onDiskHits".equalsIgnoreCase(inside)) cs.setOnDiskHits(toInt(value, 0));
else if ("size".equalsIgnoreCase(inside)) cs.setSize(toInt(value, 0));
else if ("statisticsAccuracy".equalsIgnoreCase(inside)) cs.setStatisticsAccuracy(value);
} else {
// System.err.println(inside+":"+value);
}
}
/**
* Transfers cache removals or clears. This allows explicit cache cleanup to be propagated to the
* shared cache even in the event of rollback - useful if the cause of a problem is the shared
* cache value.
*/
public void afterRollback() {
TransactionData txnData = getTransactionData();
try {
if (txnData.isClearOn) {
// clear shared cache
final long startNanos = cacheStatsEnabled ? System.nanoTime() : 0;
sharedCache.clear();
final long endNanos = cacheStatsEnabled ? System.nanoTime() : 0;
if (cacheStatsEnabled) {
TransactionStats stats = txnData.stats;
stats.record(startNanos, endNanos, OpType.CLEAR);
}
if (isDebugEnabled) {
logger.debug("Clear notification recieved in rollback - clearing shared cache");
}
} else {
// transfer any removed items
for (Serializable key : txnData.removedItemsCache) {
final long startNanos = System.nanoTime();
sharedCache.remove(key);
final long endNanos = System.nanoTime();
TransactionStats stats = txnData.stats;
stats.record(startNanos, endNanos, OpType.REMOVE);
}
if (isDebugEnabled) {
logger.debug(
"Removed "
+ txnData.removedItemsCache.size()
+ " values from shared cache in rollback");
}
}
} catch (Throwable e) {
throw new AlfrescoRuntimeException("Failed to transfer updates to shared cache", e);
} finally {
removeCaches(txnData);
// Aggregate this transaction's stats with centralised cache stats.
if (cacheStatsEnabled) {
cacheStats.add(name, txnData.stats);
}
}
}
/** Merge the transactional caches into the shared cache */
public void afterCommit() {
if (isDebugEnabled) {
logger.debug("Processing after-commit");
}
TransactionData txnData = getTransactionData();
try {
if (txnData.isClearOn) {
// clear shared cache
final long startNanos = cacheStatsEnabled ? System.nanoTime() : 0;
sharedCache.clear();
final long endNanos = cacheStatsEnabled ? System.nanoTime() : 0;
if (cacheStatsEnabled) {
TransactionStats stats = txnData.stats;
stats.record(startNanos, endNanos, OpType.CLEAR);
}
if (isDebugEnabled) {
logger.debug("Clear notification recieved in commit - clearing shared cache");
}
} else {
// transfer any removed items
for (Serializable key : txnData.removedItemsCache) {
final long startNanos = System.nanoTime();
sharedCache.remove(key);
final long endNanos = System.nanoTime();
TransactionStats stats = txnData.stats;
stats.record(startNanos, endNanos, OpType.REMOVE);
}
if (isDebugEnabled) {
logger.debug(
"Removed "
+ txnData.removedItemsCache.size()
+ " values from shared cache in commit");
}
}
// transfer updates
Set<Serializable> keys = (Set<Serializable>) txnData.updatedItemsCache.keySet();
for (Map.Entry<Serializable, CacheBucket<V>> entry :
(Set<Map.Entry<Serializable, CacheBucket<V>>>) txnData.updatedItemsCache.entrySet()) {
Serializable key = entry.getKey();
CacheBucket<V> bucket = entry.getValue();
try {
bucket.doPostCommit(
sharedCache,
key,
this.isMutable,
this.allowEqualsChecks,
txnData.isReadOnly,
txnData.stats);
} catch (Exception e) {
// MNT-10486: NPE in NodeEntity during post-commit write through to shared cache
// This try-catch is diagnostic in nature. We need to know the names of the
// caches
// and details of the values involved.
// The causal exception will be rethrown.
throw new AlfrescoRuntimeException(
"CacheBucket postCommit transfer to shared cache failed: \n"
+ " Cache: "
+ sharedCache
+ "\n"
+ " Key: "
+ key
+ "\n"
+ " New Value: "
+ bucket.getValue()
+ "\n"
+ " Cache Value:"
+ sharedCache.get(key),
e);
}
}
if (isDebugEnabled) {
logger.debug("Post-commit called for " + keys.size() + " values.");
}
} catch (Throwable e) {
throw new AlfrescoRuntimeException("Failed to transfer updates to shared cache", e);
} finally {
removeCaches(txnData);
// Aggregate this transaction's stats with centralised cache stats.
if (cacheStatsEnabled) {
cacheStats.add(name, txnData.stats);
}
}
}
