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SagaInstanceFactory.java
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SagaInstanceFactory.java
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package io.eventuate.tram.sagas.orchestration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
public class SagaInstanceFactory {
private Logger logger = LoggerFactory.getLogger(this.getClass());
private ConcurrentMap<Saga<?>, SagaManager<?>> sagaManagers = new ConcurrentHashMap<>();
private SagaManagerFactory sagaManagerFactory;
public SagaInstanceFactory(SagaManagerFactory sagaManagerFactory) {
this.sagaManagerFactory = sagaManagerFactory;
}
public <SagaData> SagaInstance create(Saga<SagaData> saga, SagaData data) {
SagaManager<SagaData> sagaManager = (SagaManager<SagaData>)sagaManagers.computeIfAbsent(saga, this::makeSagaManager);
return sagaManager.create(data);
}
private <SagaData> SagaManager<SagaData> makeSagaManager(Saga<SagaData> saga) {
SagaManagerImpl<SagaData> sagaDataSagaManager = sagaManagerFactory.make(saga);
sagaDataSagaManager.subscribeToReplyChannel();
return sagaDataSagaManager;
}
}