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.cassandra.service.snapshot;
  
  import java.io.*;
  import java.time.Instant;
  import java.util.List;
  import java.util.Objects;
  
  import com.fasterxml.jackson.annotation.JsonAutoDetect;
  import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import org.apache.cassandra.config.DurationSpec;
  import org.apache.cassandra.io.util.File;
  import org.apache.cassandra.utils.JsonUtils;
  
  // Only serialize fields
  @JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.ANY,
                  getterVisibility = JsonAutoDetect.Visibility.NONE,
                  setterVisibility = JsonAutoDetect.Visibility.NONE)
  @JsonIgnoreProperties(ignoreUnknown = true)
  public class SnapshotManifest
  {
      @JsonProperty("files")
      public final List<String> files;
  
      @JsonProperty("created_at")
      public final Instant createdAt;
  
      @JsonProperty("expires_at")
      public final Instant expiresAt;
  
      @JsonProperty("ephemeral")
      public final boolean ephemeral;
  
      /** needed for jackson serialization */
      @SuppressWarnings("unused")
      private SnapshotManifest()
      {
          this.files = null;
          this.createdAt = null;
          this.expiresAt = null;
          this.ephemeral = false;
      }
  
      public SnapshotManifest(List<String> files, DurationSpec.IntSecondsBound ttl, Instant creationTime, boolean ephemeral)
      {
          this.files = files;
          this.createdAt = creationTime;
          this.expiresAt = computeExpiration(ttl, creationTime);
          this.ephemeral = ephemeral;
      }
  
      public List<String> getFiles()
      {
          return files;
      }
  
      public Instant getCreatedAt()
      {
          return createdAt;
      }
  
      public Instant getExpiresAt()
      {
          return expiresAt;
      }
  
      public boolean isEphemeral()
      {
          return ephemeral;
      }
  
      public void serializeToJsonFile(File outputFile) throws IOException
      {
          JsonUtils.serializeToJsonFile(this, outputFile);
      }
  
      public static SnapshotManifest deserializeFromJsonFile(File file) throws IOException
      {
          return JsonUtils.deserializeFromJsonFile(SnapshotManifest.class, file);
      }
  
      public static Instant computeExpiration(DurationSpec.IntSecondsBound ttl, Instant createdAt)
      {
          return ttl == null ? null : createdAt.plusSeconds(ttl.toSeconds());
      }
  
      @Override
      public boolean equals(Object o)
      {
          if (this == o) return true;
          if (o == null || getClass() != o.getClass()) return false;
          SnapshotManifest manifest = (SnapshotManifest) o;
          return Objects.equals(files, manifest.files)
                 && Objects.equals(createdAt, manifest.createdAt)
                 && Objects.equals(expiresAt, manifest.expiresAt)
                 && Objects.equals(ephemeral, manifest.ephemeral);
      }
  
      @Override
      public int hashCode()
      {
          return Objects.hash(files, createdAt, expiresAt, ephemeral);
      }
  }
  