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/*
 * Copyright (c) 2016 Uber Technologies, Inc. ([email protected])
 *
 * Licensed 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 com.uber.hoodie;

import com.uber.hoodie.common.model.HoodieKey;
import com.uber.hoodie.common.model.HoodieRecord;
import com.uber.hoodie.common.model.HoodieWriteStat;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;

/**
 * Status of a write operation.
 */
public class WriteStatus implements Serializable {

  private final HashMap errors = new HashMap<>();

  private final List writtenRecords = new ArrayList<>();

  private final List failedRecords = new ArrayList<>();

  private Throwable globalError = null;

  private String fileId = null;

  private String partitionPath = null;

  private HoodieWriteStat stat = null;

  private long totalRecords = 0;
  private long totalErrorRecords = 0;

  /**
   * Mark write as success, optionally using given parameters for the purpose of calculating some
   * aggregate metrics. This method is not meant to cache passed arguments, since WriteStatus
   * objects are collected in Spark Driver.
   *
   * @param record                 deflated {@code HoodieRecord} containing information that uniquely identifies
   *                               it.
   * @param optionalRecordMetadata optional metadata related to data contained in {@link
   *                               HoodieRecord} before deflation.
   */
  public void markSuccess(HoodieRecord record,
      Optional> optionalRecordMetadata) {
    writtenRecords.add(record);
    totalRecords++;
  }

  /**
   * Mark write as failed, optionally using given parameters for the purpose of calculating some
   * aggregate metrics. This method is not meant to cache passed arguments, since WriteStatus
   * objects are collected in Spark Driver.
   *
   * @param record                 deflated {@code HoodieRecord} containing information that uniquely identifies
   *                               it.
   * @param optionalRecordMetadata optional metadata related to data contained in {@link
   *                               HoodieRecord} before deflation.
   */
  public void markFailure(HoodieRecord record, Throwable t,
      Optional> optionalRecordMetadata) {
    failedRecords.add(record);
    errors.put(record.getKey(), t);
    totalRecords++;
    totalErrorRecords++;
  }

  public String getFileId() {
    return fileId;
  }

  public void setFileId(String fileId) {
    this.fileId = fileId;
  }

  public boolean hasErrors() {
    return totalErrorRecords > 0;
  }

  public boolean isErrored(HoodieKey key) {
    return errors.containsKey(key);
  }

  public HashMap getErrors() {
    return errors;
  }

  public boolean hasGlobalError() {
    return globalError != null;
  }

  public Throwable getGlobalError() {
    return this.globalError;
  }

  public void setGlobalError(Throwable t) {
    this.globalError = t;
  }

  public List getWrittenRecords() {
    return writtenRecords;
  }

  public List getFailedRecords() {
    return failedRecords;
  }

  public HoodieWriteStat getStat() {
    return stat;
  }

  public void setStat(HoodieWriteStat stat) {
    this.stat = stat;
  }

  public String getPartitionPath() {
    return partitionPath;
  }

  public void setPartitionPath(String partitionPath) {
    this.partitionPath = partitionPath;
  }

  public long getTotalRecords() {
    return totalRecords;
  }

  public long getTotalErrorRecords() {
    return totalErrorRecords;
  }

  @Override
  public String toString() {
    final StringBuilder sb = new StringBuilder("WriteStatus {");
    sb.append("fileId=").append(fileId);
    sb.append(", globalError='").append(globalError).append('\'');
    sb.append(", hasErrors='").append(hasErrors()).append('\'');
    sb.append(", errorCount='").append(totalErrorRecords).append('\'');
    sb.append(", errorPct='").append((100.0 * totalErrorRecords) / totalRecords).append('\'');
    sb.append('}');
    return sb.toString();
  }
}