com.cognifide.aet.job.common.modifiers.header.HeaderModifier Maven / Gradle / Ivy

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Module containing all AET core jobs implementations: collectors, comparators, data filters and modifiers

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/**
 * AET
 *
 * Copyright (C) 2013 Cognifide Limited
 *
 * 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 com.cognifide.aet.job.common.modifiers.header;

import com.cognifide.aet.communication.api.metadata.CollectorStepResult;
import com.cognifide.aet.job.api.collector.CollectorJob;
import com.cognifide.aet.job.api.collector.WebCommunicationWrapper;
import com.cognifide.aet.job.api.exceptions.ParametersException;
import com.cognifide.aet.job.api.exceptions.ProcessingException;
import java.util.Map;

public class HeaderModifier implements CollectorJob {

  public static final String NAME = "header";

  private static final String PARAM_KEY = "key";

  private static final String PARAM_VALUE = "value";

  private final WebCommunicationWrapper webCommunicationWrapper;

  private String key;

  private String value;

  public HeaderModifier(WebCommunicationWrapper webCommunicationWrapper) {
    this.webCommunicationWrapper = webCommunicationWrapper;
  }


  @Override
  public CollectorStepResult collect() throws ProcessingException {
    if (!webCommunicationWrapper.isUseProxy()) {
      throw new ProcessingException("Cannot modify header without using proxy");
    }
    webCommunicationWrapper.getProxyServer().addHeader(key, value);
    webCommunicationWrapper.getHttpRequestExecutor().addHeader(key, value);
    return CollectorStepResult.newModifierResult();
  }

  @Override
  public void setParameters(Map params) throws ParametersException {
    if (params.containsKey(PARAM_KEY) && params.containsKey(PARAM_VALUE)) {
      key = params.get(PARAM_KEY);
      value = params.get(PARAM_VALUE);
    } else {
      throw new ParametersException("Missing Key or Value on Header Modifier");
    }
  }

}