SdkGenerator.java

/*
 * Copyright 2014-2016 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.control.service.sdk;

import org.kaaproject.kaa.common.dto.admin.SdkProfileDto;
import org.kaaproject.kaa.common.dto.file.FileData;
import org.kaaproject.kaa.server.common.zk.gen.BootstrapNodeInfo;
import org.kaaproject.kaa.server.control.service.sdk.event.EventFamilyMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;


public abstract class SdkGenerator {


  private static final Logger LOG = LoggerFactory.getLogger(SdkGenerator.class);

  /**
   * Read file.
   *
   * @param file the file
   * @return the string
   * @throws IOException Signals that an I/O exception has occurred.
   */
  static String readFile(File file) throws IOException {
    String result = null;
    try {
      StringBuffer fileData = new StringBuffer();
      FileInputStream input = new FileInputStream(file);
      BufferedReader reader = new BufferedReader(new InputStreamReader(input));
      char[] buf = new char[1024];
      int numRead = 0;
      while ((numRead = reader.read(buf)) != -1) {
        String readData = String.valueOf(buf, 0, numRead);
        fileData.append(readData);
      }
      reader.close();
      result = fileData.toString();
    } catch (IOException ex) {
      LOG.error("Unable to read from specified file '"
          + file + "'! Error: " + ex.getMessage(), ex);
      throw ex;
    }
    return result;
  }

  /**
   * Read resource.
   *
   * @param resource the resource
   * @return the string
   * @throws IOException Signals that an I/O exception has occurred.
   */
  public static String readResource(String resource) throws IOException {
    String result;
    try {
      StringBuffer fileData = new StringBuffer();
      InputStream input = Thread.currentThread()
          .getContextClassLoader().getResourceAsStream(resource);
      BufferedReader reader = new BufferedReader(new InputStreamReader(input));
      char[] buf = new char[1024];
      int numRead = 0;
      while ((numRead = reader.read(buf)) != -1) {
        String readData = String.valueOf(buf, 0, numRead);
        fileData.append(readData);
      }
      reader.close();
      result = fileData.toString();
    } catch (IOException ex) {
      LOG.error("Unable to read from specified resource '"
          + resource + "'! Error: " + ex.getMessage(), ex);
      throw ex;
    }
    return result;
  }

  /**
   * Generate sdk.
   *
   * @param buildVersion                    the build version
   * @param bootstrapNodes                  the bootstrap nodes
   * @param sdkProfile                      the sdk profile
   * @param profileSchemaBody               the profile schema body
   * @param notificationSchemaBody          the notification schema body
   * @param configurationProtocolSchemaBody the configuration protocol schema body
   * @param configurationBaseSchemaBody     the configuration base schema body
   * @param defaultConfigurationData        the default configuration data
   * @param eventFamilies                   the event families meta information
   * @param logSchemaBody                   the log schema body
   * @return the sdk
   * @throws Exception the exception
   */
  public abstract FileData generateSdk(String buildVersion,
                                       List<BootstrapNodeInfo> bootstrapNodes,
                                       SdkProfileDto sdkProfile,
                                       String profileSchemaBody,
                                       String notificationSchemaBody,
                                       String configurationProtocolSchemaBody,
                                       String configurationBaseSchemaBody,
                                       byte[] defaultConfigurationData,
                                       List<EventFamilyMetadata> eventFamilies,
                                       String logSchemaBody) throws Exception; //NOSONAR
}