content: /*
   * 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. */
  @SuppressWarnings({
    "rawtypes" // TODO(https://github.com/apache/beam/issues/20447)
  })
  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);
  }
  