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configuration option to switch cache implementations

This commit is contained in:
xvrl 2012-12-10 17:10:20 -08:00
parent 0105233fc3
commit 81bc2890dc
2 changed files with 43 additions and 8 deletions
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11
client/src/main/java/com/metamx/druid/client/cache/CacheConfig.java vendored Normal file
View File

@ -0,0 +1,11 @@
package com.metamx.druid.client.cache;
import org.skife.config.Config;
import org.skife.config.Default;
public abstract class CacheConfig
{
@Config("druid.bard.cache.type")
@Default("local")
public abstract String getType();
}

40
client/src/main/java/com/metamx/druid/http/BrokerNode.java
View File

@ -35,9 +35,12 @@ import com.metamx.druid.client.CachingClusteredClient;
import com.metamx.druid.client.ClientConfig;
import com.metamx.druid.client.ClientInventoryManager;
import com.metamx.druid.client.cache.CacheBroker;
import com.metamx.druid.client.cache.CacheConfig;
import com.metamx.druid.client.cache.CacheMonitor;
import com.metamx.druid.client.cache.MapCacheBroker;
import com.metamx.druid.client.cache.MapCacheBrokerConfig;
import com.metamx.druid.client.cache.MemcachedCacheBroker;
import com.metamx.druid.client.cache.MemcachedCacheBrokerConfig;
import com.metamx.druid.initialization.Initialization;
import com.metamx.druid.initialization.ServiceDiscoveryConfig;
import com.metamx.druid.jackson.DefaultObjectMapper;
@ -66,6 +69,10 @@ public class BrokerNode extends QueryableNode<BrokerNode>
{
private static final Logger log = new Logger(BrokerNode.class);
public static final String CACHE_TYPE_LOCAL = "local";
public static final String CACHE_TYPE_MEMCACHED = "memcached";
public static final String CACHE_PROPERTY_PREFIX = "druid.bard.cache";
private final List<Module> extraModules = Lists.newArrayList();
private final List<String> pathsForGuiceFilter = Lists.newArrayList();
@ -233,14 +240,31 @@ public class BrokerNode extends QueryableNode<BrokerNode>
private void initializeCacheBroker()
{
if (cacheBroker == null) {
setCacheBroker(
MapCacheBroker.create(
getConfigFactory().buildWithReplacements(
MapCacheBrokerConfig.class,
ImmutableMap.of("prefix", "druid.bard.cache")
)
)
);
String cacheType = getConfigFactory()
.build(CacheConfig.class)
.getType();
if (cacheType.equals(CACHE_TYPE_LOCAL)) {
setCacheBroker(
MapCacheBroker.create(
getConfigFactory().buildWithReplacements(
MapCacheBrokerConfig.class,
ImmutableMap.of("prefix", CACHE_PROPERTY_PREFIX)
)
)
);
} else if (cacheType.equals(CACHE_TYPE_MEMCACHED)) {
setCacheBroker(
MemcachedCacheBroker.create(
getConfigFactory().buildWithReplacements(
MemcachedCacheBrokerConfig.class,
ImmutableMap.of("prefix", CACHE_PROPERTY_PREFIX)
)
)
);
} else {
throw new ISE("Unknown cache type [%s]", cacheType);
}
}
}