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19 package org.apache.hadoop.hbase.regionserver;
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24 public class MetricsRegionServerSourceFactoryImpl implements MetricsRegionServerSourceFactory {
25 public static enum FactoryStorage {
26 INSTANCE;
27 private Object aggLock = new Object();
28 private MetricsRegionAggregateSourceImpl aggImpl;
29 }
30
31 private synchronized MetricsRegionAggregateSourceImpl getAggregate() {
32 synchronized (FactoryStorage.INSTANCE.aggLock) {
33 if (FactoryStorage.INSTANCE.aggImpl == null) {
34 FactoryStorage.INSTANCE.aggImpl = new MetricsRegionAggregateSourceImpl();
35 }
36 return FactoryStorage.INSTANCE.aggImpl;
37 }
38 }
39
40
41 @Override
42 public synchronized MetricsRegionServerSource createServer(MetricsRegionServerWrapper regionServerWrapper) {
43 return new MetricsRegionServerSourceImpl(regionServerWrapper);
44 }
45
46 @Override
47 public MetricsRegionSource createRegion(MetricsRegionWrapper wrapper) {
48 return new MetricsRegionSourceImpl(wrapper, getAggregate());
49 }
50 }