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InMemoryStore.java
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InMemoryStore.java
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package howto.fido2;
import io.vertx.core.Future;
import io.vertx.ext.auth.webauthn.Authenticator;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
public class InMemoryStore {
/**
* This is a dummy database, just for demo purposes.
* In a real world scenario you should be using something like:
*
* <ul>
* <li>Postgres</li>
* <li>MySQL</li>
* <li>Mongo</li>
* <li>Redis</li>
* <li>...</li>
* </ul>
*/
private final List<Authenticator> database = new ArrayList<>();
public Future<List<Authenticator>> fetcher(Authenticator query) {
return Future.succeededFuture(
database.stream()
.filter(entry -> {
if (query.getUserName() != null) {
return query.getUserName().equals(entry.getUserName());
}
if (query.getCredID() != null) {
return query.getCredID().equals(entry.getCredID());
}
// This is a bad query! both username and credID are null
return false;
})
.collect(Collectors.toList())
);
}
public Future<Void> updater(Authenticator authenticator) {
long updated = database.stream()
.filter(entry -> authenticator.getCredID().equals(entry.getCredID()))
.peek(entry -> {
// update existing counter
entry.setCounter(authenticator.getCounter());
}).count();
if (updated > 0) {
return Future.succeededFuture();
} else {
database.add(authenticator);
return Future.succeededFuture();
}
}
}