package im.xiaoyao.presto.ethereum; import com.facebook.presto.spi.type.Type; import com.facebook.presto.spi.type.TypeManager; import com.fasterxml.jackson.databind.DeserializationContext; import com.fasterxml.jackson.databind.deser.std.FromStringDeserializer; import com.google.inject.Binder; import com.google.inject.Module; import com.google.inject.Scopes; import javax.inject.Inject; import static com.facebook.presto.spi.type.TypeSignature.parseTypeSignature; import static com.google.common.base.Preconditions.checkArgument; import static io.airlift.configuration.ConfigBinder.configBinder; import static io.airlift.json.JsonBinder.jsonBinder; import static java.util.Objects.requireNonNull; public class EthereumConnectorModule implements Module { @Override public void configure(Binder binder) { binder.bind(EthereumConnector.class).in(Scopes.SINGLETON); binder.bind(EthereumMetadata.class).in(Scopes.SINGLETON); binder.bind(EthereumWeb3jProvider.class).in(Scopes.SINGLETON); binder.bind(EthereumSplitManager.class).in(Scopes.SINGLETON); binder.bind(EthereumRecordSetProvider.class).in(Scopes.SINGLETON); configBinder(binder).bindConfig(EthereumConnectorConfig.class); jsonBinder(binder).addDeserializerBinding(Type.class).to(TypeDeserializer.class); } public static final class TypeDeserializer extends FromStringDeserializer<Type> { private static final long serialVersionUID = 1L; private final TypeManager typeManager; @Inject public TypeDeserializer(TypeManager typeManager) { super(Type.class); this.typeManager = requireNonNull(typeManager, "typeManager is null"); } @Override protected Type _deserialize(String value, DeserializationContext context) { Type type = typeManager.getType(parseTypeSignature(value)); checkArgument(type != null, "Unknown type %s", value); return type; } } }