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.sidecar.common.request;
  
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Objects;
  
  import io.netty.handler.codec.http.HttpMethod;
  import org.apache.cassandra.sidecar.common.ApiEndpointsV1;
  import org.apache.cassandra.sidecar.common.request.data.Digest;
  
  /**
   * Represents a request to upload an SSTable component
   */
  public class UploadSSTableRequest extends Request implements UploadableRequest
  {
      private final Digest digest;
      private final String filename;
  
      /**
       * Constructs a request with the provided {@code requestURI}
       *
       * @param keyspace  the keyspace in Cassandra
       * @param table     the table name in Cassandra
       * @param uploadId  an identifier for the upload
       * @param component SSTable component being uploaded
       * @param digest    digest value to check integrity of SSTable component uploaded
       * @param filename  the path to the file to be uploaded
       */
      public UploadSSTableRequest(String keyspace, String table, String uploadId, String component,
                                  Digest digest, String filename)
      {
          super(requestURI(keyspace, table, uploadId, component));
          this.digest = digest;
          this.filename = Objects.requireNonNull(filename, "the filename is must be non-null");
  
          if (!Files.exists(Paths.get(filename)))
          {
              throw new IllegalArgumentException("File '" + filename + "' does not exist");
          }
      }
  
      @Override
      public String filename()
      {
          return filename;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public Map<String, String> headers()
      {
          if (digest == null)
          {
              return super.headers();
          }
          Map<String, String> headers = new HashMap<>(super.headers());
          headers.putAll(digest.headers());
          return Collections.unmodifiableMap(headers);
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public HttpMethod method()
      {
          return HttpMethod.PUT;
      }
  
      static String requestURI(String keyspace, String tableName, String uploadId, String component)
      {
          return ApiEndpointsV1.SSTABLE_UPLOAD_ROUTE
                 .replaceAll(ApiEndpointsV1.UPLOAD_ID_PATH_PARAM, uploadId)
                 .replaceAll(ApiEndpointsV1.KEYSPACE_PATH_PARAM, keyspace)
                 .replaceAll(ApiEndpointsV1.TABLE_PATH_PARAM, tableName)
                 .replaceAll(ApiEndpointsV1.COMPONENT_PATH_PARAM, component);
      }
  }
  