/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.beam.runners.direct;
import org.apache.beam.sdk.runners.AppliedPTransform;
/**
* A callback for completing a bundle of input.
*/
interface CompletionCallback {
/**
* Handle a successful result, returning the committed outputs of the result.
*/
CommittedResult handleResult(
CommittedBundle<?> inputBundle, TransformResult<?> result);
/**
* Handle an input bundle that did not require processing.
*
* <p>This occurs when a Source has no splits that can currently produce outputs.
*/
void handleEmpty(AppliedPTransform<?, ?, ?> transform);
/**
* Handle a result that terminated abnormally due to the provided {@link Exception}.
*/
void handleException(CommittedBundle<?> inputBundle, Exception t);
/**
* Handle a result that terminated abnormally due to the provided {@link Error}. The pipeline
* should be shut down, and the Error propagated.
*/
void handleError(Error err);
}