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Close C* cluster onStop to clean up file descriptor #39

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29 changes: 28 additions & 1 deletion ratpack-cassandra/src/main/java/smartthings/ratpack/cassandra/CassandraService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -121,14 +121,41 @@ public Promise<ResultSet> execute(Statement statement) {
});
}

public Promise<Void> closeSession() {
return Promise.async(downstream -> {
CloseFuture closeFuture = session.closeAsync();
downstream.accept(closeFuture);
});
}

public Promise<Void> closeCluster() {
return Promise.async(downstream -> {
CloseFuture closeFuture = cluster.closeAsync();
downstream.accept(closeFuture);
});
}

@Override
public void onStart(StartEvent event) throws Exception {
connect();
}

@Override
public void onStop(StopEvent event) throws Exception {
session.closeAsync();
closeSession()
.mapError(error -> {
logger.error("CassandraService error closing session", error);
return null;
})
.flatMap(ignore -> {
logger.info("CassandraService session closed");
return closeCluster();
})
.mapError(error -> {
logger.error("CassandraService error closing cluster", error);
return null;
})
.then(ignore -> logger.info("CassandraService cluster closed"));
}

public Session getSession() {
Expand Down