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19 package org.apache.hadoop.hbase.regionserver;
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24 public class MetricsRegionServerSourceFactoryImpl implements MetricsRegionServerSourceFactory {
25 private static enum FactoryStorage {
26 INSTANCE;
27 private MetricsRegionServerSource serverSource;
28 private MetricsRegionAggregateSourceImpl aggImpl;
29 }
30
31 private synchronized MetricsRegionAggregateSourceImpl getAggregate() {
32 if (FactoryStorage.INSTANCE.aggImpl == null) {
33 FactoryStorage.INSTANCE.aggImpl = new MetricsRegionAggregateSourceImpl();
34 }
35 return FactoryStorage.INSTANCE.aggImpl;
36 }
37
38
39 @Override
40 public synchronized MetricsRegionServerSource createServer(MetricsRegionServerWrapper regionServerWrapper) {
41 if (FactoryStorage.INSTANCE.serverSource == null) {
42 FactoryStorage.INSTANCE.serverSource = new MetricsRegionServerSourceImpl(
43 regionServerWrapper);
44 }
45 return FactoryStorage.INSTANCE.serverSource;
46 }
47
48 @Override
49 public MetricsRegionSource createRegion(MetricsRegionWrapper wrapper) {
50 return new MetricsRegionSourceImpl(wrapper, getAggregate());
51 }
52 }