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.carbon.flink;
  
  import org.apache.flink.core.fs.Path;
  import org.apache.flink.core.fs.RecoverableFsDataOutputStream;
  import org.apache.flink.core.fs.RecoverableWriter;
  import org.apache.flink.core.io.SimpleVersionedSerializer;
  
  public final class ProxyRecoverableWriter implements RecoverableWriter {
  
    @SuppressWarnings("unchecked")
    @Override
    public SimpleVersionedSerializer<CommitRecoverable> getCommitRecoverableSerializer() {
      final SimpleVersionedSerializer<? extends CommitRecoverable> serializer =
          ProxyRecoverableSerializer.INSTANCE;
      return (SimpleVersionedSerializer<CommitRecoverable>) serializer;
    }
  
    @SuppressWarnings("unchecked")
    @Override
    public SimpleVersionedSerializer<ResumeRecoverable> getResumeRecoverableSerializer() {
      final SimpleVersionedSerializer<? extends ResumeRecoverable> serializer =
          ProxyRecoverableSerializer.INSTANCE;
      return (SimpleVersionedSerializer<ResumeRecoverable>) serializer;
    }
  
    @Override
    public ProxyRecoverableOutputStream open(final Path path) {
      return new ProxyRecoverableOutputStream();
    }
  
    @Override
    public RecoverableFsDataOutputStream recover(final ResumeRecoverable resumeRecoverable) {
      throw new UnsupportedOperationException();
    }
  
    @Override
    public boolean requiresCleanupOfRecoverableState() {
      return false;
    }
  
    @Override
    public boolean cleanupRecoverableState(final ResumeRecoverable resumeRecoverable) {
      throw new UnsupportedOperationException();
    }
  
    @Override
    public ProxyRecoverableOutputStream.Committer recoverForCommit(
          final CommitRecoverable commitRecoverable
    ) {
      if (!(commitRecoverable instanceof ProxyRecoverable)) {
        throw new IllegalArgumentException(
            "ProxyFileSystem can not recover recoverable for other file system. " + commitRecoverable
        );
      }
      return new ProxyRecoverableOutputStream.Committer((ProxyRecoverable) commitRecoverable);
    }
  
    @Override
    public boolean supportsResume() {
      return false;
    }
  
  }
  