Package org.apache.sqoop.framework

Source Code of org.apache.sqoop.framework.FrameworkValidator

/**
* 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.sqoop.framework;

import org.apache.sqoop.framework.configuration.ConnectionConfiguration;
import org.apache.sqoop.framework.configuration.ExportJobConfiguration;
import org.apache.sqoop.framework.configuration.ImportJobConfiguration;
import org.apache.sqoop.framework.configuration.InputForm;
import org.apache.sqoop.framework.configuration.OutputForm;
import org.apache.sqoop.framework.configuration.ThrottlingForm;
import org.apache.sqoop.model.MJob;
import org.apache.sqoop.validation.Status;
import org.apache.sqoop.validation.Validation;
import org.apache.sqoop.validation.Validator;

/**
* Validate framework configuration objects
*/
public class FrameworkValidator extends Validator {

  @Override
  public Validation validateConnection(Object connectionConfiguration) {
    Validation validation = new Validation(ConnectionConfiguration.class);
    // No validation on connection object
    return validation;
  }


  @Override
  public Validation validateJob(MJob.Type type, Object jobConfiguration) {
    switch(type) {
      case IMPORT:
        return validateImportJob(jobConfiguration);
      case EXPORT:
        return validateExportJob(jobConfiguration);
      default:
        return super.validateJob(type, jobConfiguration);
    }
  }

  private Validation validateExportJob(Object jobConfiguration) {
    Validation validation = new Validation(ExportJobConfiguration.class);
    ExportJobConfiguration configuration = (ExportJobConfiguration)jobConfiguration;

    validateInputForm(validation, configuration.input);
    validateThrottingForm(validation, configuration.throttling);

    return validation;
  }

  private Validation validateImportJob(Object jobConfiguration) {
    Validation validation = new Validation(ImportJobConfiguration.class);
    ImportJobConfiguration configuration = (ImportJobConfiguration)jobConfiguration;

    validateOutputForm(validation, configuration.output);
    validateThrottingForm(validation, configuration.throttling);

    return validation;
  }

  private void validateInputForm(Validation validation, InputForm input) {
    if(input.inputDirectory == null || input.inputDirectory.isEmpty()) {
      validation.addMessage(Status.UNACCEPTABLE, "input", "inputDirectory", "Input directory is empty");
    }
  }

  private void validateOutputForm(Validation validation, OutputForm output) {
    if(output.outputDirectory == null || output.outputDirectory.isEmpty()) {
      validation.addMessage(Status.UNACCEPTABLE, "output", "outputDirectory", "Output directory is empty");
    }
  }

  private void validateThrottingForm(Validation validation, ThrottlingForm throttling) {
    if(throttling.extractors != null && throttling.extractors < 1) {
      validation.addMessage(Status.UNACCEPTABLE, "throttling", "extractors", "You need to specify more than one extractor");
    }

    if(throttling.loaders != null && throttling.loaders < 1) {
      validation.addMessage(Status.UNACCEPTABLE, "throttling", "loaders", "You need to specify more than one loader");
    }
  }
}
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