package org.infinispan.loaders.jdbc.mixed;
import org.infinispan.Cache;
import org.infinispan.configuration.cache.CacheLoaderConfiguration;
import org.infinispan.configuration.cache.ConfigurationBuilder;
import org.infinispan.container.entries.InternalCacheEntry;
import org.infinispan.loaders.CacheLoaderException;
import org.infinispan.loaders.jdbc.binary.JdbcBinaryCacheStore;
import org.infinispan.loaders.jdbc.configuration.ConnectionFactoryConfiguration;
import org.infinispan.loaders.jdbc.configuration.JdbcBinaryCacheStoreConfiguration;
import org.infinispan.loaders.jdbc.configuration.JdbcBinaryCacheStoreConfigurationBuilder;
import org.infinispan.loaders.jdbc.configuration.JdbcMixedCacheStoreConfiguration;
import org.infinispan.loaders.jdbc.configuration.JdbcStringBasedCacheStoreConfiguration;
import org.infinispan.loaders.jdbc.configuration.JdbcStringBasedCacheStoreConfigurationBuilder;
import org.infinispan.loaders.jdbc.connectionfactory.ConnectionFactory;
import org.infinispan.loaders.jdbc.stringbased.JdbcStringBasedCacheStore;
import org.infinispan.loaders.spi.AbstractCacheStore;
import org.infinispan.loaders.spi.CacheStore;
import org.infinispan.commons.marshall.StreamingMarshaller;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Set;
/**
* Cache store that combines functionality of {@link JdbcBinaryCacheStore} and {@link JdbcStringBasedCacheStore}. It
* aggregates an instance of JdbcBinaryCacheStore and JdbcStringBasedCacheStore, delegating work to one of them
* (sometimes both, see below) based on the passed in key. In order to determine which store to use it will rely on the
* configured {@link org.infinispan.loaders.keymappers.Key2StringMapper} )(see configuration).
* <p/>
* The advantage it brings is the possibility of efficiently storing string(able) keyed {@link
* org.infinispan.container.entries.InternalCacheEntry}s, and at the same time being able to store any other keys, a la
* {@link org.infinispan.loaders.jdbc.binary.JdbcBinaryCacheStore}.
* <p/>
* There will only be a performance cost for the aggregate operations: loadAll, fromStream, toStream and clear. For
* these operations there will be two distinct database call, one for each JdbcStore implementation. Most of application
* are only using these operations at lifecycles changes (e.g. fromStream and toStream at cluster join time, loadAll at
* startup for warm caches), so performance drawback shouldn't be significant (again, most of the cases).
* <p/>
* Resource sharing - both aggregated cache loaders have locks and connection pools. The locking is not shared, each
* loader keeping its own {@link org.infinispan.util.concurrent.locks.StripedLock} instance. Also the tables (even though
* similar as definition) are different in order to avoid key collision. On the other hand, the connection pooling is a
* shared resource.
*
* @author Mircea.Markus@jboss.com
* @see org.infinispan.loaders.jdbc.binary.JdbcBinaryCacheStore
* @see org.infinispan.loaders.jdbc.stringbased.JdbcStringBasedCacheStore
*/
public class JdbcMixedCacheStore extends AbstractCacheStore {
private static final Log log = LogFactory.getLog(JdbcMixedCacheStore.class);
private JdbcMixedCacheStoreConfiguration configuration;
private JdbcBinaryCacheStore binaryCacheStore = new JdbcBinaryCacheStore();
private JdbcStringBasedCacheStore stringBasedCacheStore = new JdbcStringBasedCacheStore();
private ConnectionFactory sharedConnectionFactory;
@Override
public void init(CacheLoaderConfiguration configuration, Cache<?, ?> cache, StreamingMarshaller m) throws
CacheLoaderException {
this.configuration = validateConfigurationClass(configuration, JdbcMixedCacheStoreConfiguration.class);
super.init(configuration, cache, m);
binaryCacheStore.init(buildBinaryStoreConfiguration(this.configuration), cache, m);
stringBasedCacheStore.init(buildStringStoreConfiguration(this.configuration), cache, m);
}
@Override
public void start() throws CacheLoaderException {
super.start();
ConnectionFactoryConfiguration factoryConfig = configuration.connectionFactory();
sharedConnectionFactory = ConnectionFactory.getConnectionFactory(factoryConfig.connectionFactoryClass().getName(),
configuration.getClass().getClassLoader());
sharedConnectionFactory.start(factoryConfig, configuration.getClass().getClassLoader());
binaryCacheStore.doConnectionFactoryInitialization(sharedConnectionFactory);
binaryCacheStore.start();
stringBasedCacheStore.doConnectionFactoryInitialization(sharedConnectionFactory);
stringBasedCacheStore.start();
}
@Override
public void stop() throws CacheLoaderException {
super.stop();
Throwable cause = null;
try {
binaryCacheStore.stop();
} catch (Throwable t) {
if (cause == null) cause = t;
log.debug("Exception while stopping", t);
}
try {
stringBasedCacheStore.stop();
} catch (Throwable t) {
if (cause == null) cause = t;
log.debug("Exception while stopping", t);
}
try {
sharedConnectionFactory.stop();
} catch (Throwable t) {
if (cause == null) cause = t;
log.debug("Exception while stopping", t);
}
if (cause != null) {
throw new CacheLoaderException("Exceptions occurred while stopping store", cause);
}
}
@Override
protected void purgeInternal() throws CacheLoaderException {
binaryCacheStore.purgeInternal();
stringBasedCacheStore.purgeInternal();
}
@Override
public InternalCacheEntry load(Object key) throws CacheLoaderException {
return getCacheStore(key).load(key);
}
@Override
public Set<InternalCacheEntry> loadAll() throws CacheLoaderException {
Set<InternalCacheEntry> fromBuckets = binaryCacheStore.loadAll();
Set<InternalCacheEntry> fromStrings = stringBasedCacheStore.loadAll();
if (log.isTraceEnabled()) {
log.tracef("Loaded from bucket: %s", fromBuckets);
log.tracef("Loaded from string: %s", fromStrings);
}
fromBuckets.addAll(fromStrings);
return fromBuckets;
}
@Override
public Set<InternalCacheEntry> load(int numEntries) throws CacheLoaderException {
if (numEntries < 0) return loadAll();
Set<InternalCacheEntry> set = stringBasedCacheStore.load(numEntries);
if (set.size() < numEntries) {
Set<InternalCacheEntry> otherSet = binaryCacheStore.load(numEntries - set.size());
set.addAll(otherSet);
}
return set;
}
@Override
public Set<Object> loadAllKeys(Set<Object> keysToExclude) throws CacheLoaderException {
Set<Object> fromBuckets = binaryCacheStore.loadAllKeys(keysToExclude);
Set<Object> fromStrings = stringBasedCacheStore.loadAllKeys(keysToExclude);
fromBuckets.addAll(fromStrings);
return fromBuckets;
}
@Override
public void store(InternalCacheEntry ed) throws CacheLoaderException {
getCacheStore(ed.getKey()).store(ed);
}
@Override
public void fromStream(ObjectInput inputStream) throws CacheLoaderException {
binaryCacheStore.fromStream(inputStream);
stringBasedCacheStore.fromStream(inputStream);
}
@Override
public void toStream(ObjectOutput outputStream) throws CacheLoaderException {
binaryCacheStore.toStream(outputStream);
stringBasedCacheStore.toStream(outputStream);
}
@Override
public boolean remove(Object key) throws CacheLoaderException {
return getCacheStore(key).remove(key);
}
@Override
public void clear() throws CacheLoaderException {
binaryCacheStore.clear();
stringBasedCacheStore.clear();
}
private CacheStore getCacheStore(Object key) {
return stringBasedCacheStore.supportsKey(key.getClass()) ? stringBasedCacheStore : binaryCacheStore;
}
public ConnectionFactory getConnectionFactory() {
return sharedConnectionFactory;
}
public JdbcBinaryCacheStore getBinaryCacheStore() {
return binaryCacheStore;
}
public JdbcStringBasedCacheStore getStringBasedCacheStore() {
return stringBasedCacheStore;
}
// Methods to build the String and Binary Configurations.
private JdbcStringBasedCacheStoreConfiguration buildStringStoreConfiguration(JdbcMixedCacheStoreConfiguration configuration){
ConfigurationBuilder builder = new ConfigurationBuilder();
JdbcStringBasedCacheStoreConfigurationBuilder stringBuilder = builder.loaders().addLoader
(JdbcStringBasedCacheStoreConfigurationBuilder.class).manageConnectionFactory(false);
stringBuilder.
key2StringMapper(configuration.key2StringMapper()).
table().read(configuration.stringTable());
return stringBuilder.create();
}
private JdbcBinaryCacheStoreConfiguration buildBinaryStoreConfiguration(JdbcMixedCacheStoreConfiguration configuration) {
ConfigurationBuilder builder = new ConfigurationBuilder();
JdbcBinaryCacheStoreConfigurationBuilder binaryBuilder = builder.loaders().addLoader
(JdbcBinaryCacheStoreConfigurationBuilder.class).manageConnectionFactory(false);
binaryBuilder.table().read(configuration.binaryTable());
return binaryBuilder.create();
}
}