KaaSinkKey.java

/*
 * Copyright 2014 CyberVision, Inc.
 *
 * 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 org.kaaproject.kaa.server.flume.sink.hdfs;

import org.apache.hadoop.fs.Path;

import java.util.Map;

public class KaaSinkKey implements EventConstants {

  private final String applicationToken;
  private final int schemaVersion;

  /**
   * Create a new instance of KaaSinkKey.
   *
   * @param applicationToken the application token
   * @param schemaVersion    the schema version
   */
  public KaaSinkKey(String applicationToken, int schemaVersion) {
    super();
    this.applicationToken = applicationToken;
    this.schemaVersion = schemaVersion;
  }

  public KaaSinkKey(Map<String, String> headers) {
    this.applicationToken = headers.get(APPLICATION_TOKEN_HEADER);
    this.schemaVersion = Integer.valueOf(headers.get(SCHEMA_VERSION_HEADER));
  }

  public String getApplicationToken() {
    return applicationToken;
  }

  public int getSchemaVersion() {
    return schemaVersion;
  }

  public void updateHeaders(Map<String, String> headers) {
    headers.put(APPLICATION_TOKEN_HEADER, applicationToken);
    headers.put(SCHEMA_VERSION_HEADER, "" + schemaVersion);
  }

  public String getPath() {
    return applicationToken + Path.SEPARATOR + schemaVersion;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime
        * result
        + ((applicationToken == null) ? 0 : applicationToken.hashCode());
    result = prime * result + schemaVersion;
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    KaaSinkKey other = (KaaSinkKey) obj;
    if (applicationToken == null) {
      if (other.applicationToken != null) {
        return false;
      }
    } else if (!applicationToken.equals(other.applicationToken)) {
      return false;
    }
    if (schemaVersion != other.schemaVersion) {
      return false;
    }
    return true;
  }


  @Override
  public String toString() {
    return "KaaSinkKey [applicationToken=" + applicationToken
        + ", schemaVersion=" + schemaVersion + "]";
  }

}