de.gematik.ti.epa.vzd.gemClient.command.commandExecutions.ExecutionBase Maven / Gradle / Ivy

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/*
 * Copyright (c) 2020 gematik GmbH
 * 
 * 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 de.gematik.ti.epa.vzd.gemClient.command.commandExecutions;

import de.gematik.ti.epa.vzd.client.invoker.ApiException;
import de.gematik.ti.epa.vzd.client.invoker.ApiResponse;
import de.gematik.ti.epa.vzd.client.model.DirectoryEntry;
import de.gematik.ti.epa.vzd.client.model.UserCertificate;
import de.gematik.ti.epa.vzd.gemClient.CommandNamesEnum;
import de.gematik.ti.epa.vzd.gemClient.command.Transformer;
import de.gematik.ti.epa.vzd.gemClient.exceptions.CommandException;
import de.gematik.ti.epa.vzd.gemClient.exceptions.GemClientException;
import de.gematik.ti.epa.vzd.gemClient.invoker.GemApiClient;
import generated.CommandType;
import generated.DistinguishedNameType;
import generated.UserCertificateType;
import java.util.ArrayList;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Represents the base for every specific execution
 */
public abstract class ExecutionBase {

  private Logger LOG = LoggerFactory.getLogger(ExecutionBase.class);

  protected GemApiClient apiClient;
  protected CommandNamesEnum execCommand;
  protected List commands;

  public ExecutionBase(GemApiClient api, CommandNamesEnum cmd) {
    this.apiClient = api;
    this.execCommand = cmd;
    this.commands = new ArrayList<>();
  }

  public boolean canHandleCommand(CommandNamesEnum cmd) {
    return this.execCommand.equals(cmd);
  }

  /**
   * Checks the given command for validation and adds it to the queue of commands to execute
   *
   * @param command
   * @return
   */
  public boolean preCheck(CommandType command) {
    try {
      if (!checkValidation(command)) {
        throw new CommandException(
            "Command invalid. Please check " + command.getName() + " " + command
                .getUserCertificate());
      }
      commands.add(command);
      return true;
    } catch (Exception ex) {
      LOG.error(ex.getMessage());
      return false;
    }
  }

  /**
   * Every single executor validates their commands and log the missing or wrong values
   *
   * @param command
   * @return
   */
  public abstract boolean checkValidation(CommandType command);

  /**
   * Executes all commands in the queue
   *
   * @return
   */
  public abstract boolean executeCommands();

  /**
   * Checks if the execution was successful and logs the result
   *
   * @return
   */
  public boolean postCheck() {
    try {
      return true;
    } catch (Exception ex) {
      ex.printStackTrace();
    }

    return false;
  }

  /**
   * This function proceed a read command, to check if a entry without cert is already present
   *
   * @param command
   * @return
   */
  protected boolean isEntryPresent(CommandType command) {
    if (command.getDn() != null) {
      CommandType searchCommand = new CommandType();
      DistinguishedNameType dn = new DistinguishedNameType();
      dn.setUid(command.getDn().getUid());
      searchCommand.setDn(dn);
      try {
        ApiResponse> response = ExecutionCollection
            .getInstance().getReadDirEntryExecution().executeCommand(searchCommand);
        return response.getStatusCode() == 200 ? true : false;
      } catch (ApiException ex) {
        if (ex.getCode() == 0) {
          throw new GemClientException(
              "The server you address is probably not reachable at the moment");
        }
        return false;
      }
    } else {
      return serachByTelematikId(command);
    }
  }

  /**
   * This function proceed a read command, to check if a entry without cert is already present
   *
   * @param command
   * @return
   */
  private boolean serachByTelematikId(CommandType command) {
    UserCertificateType userCertificate = command.getUserCertificate();
    if (userCertificate != null) {
      try {
        CommandType searchCommand = new CommandType();
        searchCommand.setUserCertificate(new UserCertificateType());
        searchCommand.getUserCertificate().setTelematikID(userCertificate.getTelematikID());
        ApiResponse> response = ExecutionCollection
            .getInstance().getReadDirEntryCertExecution().executeCommand(searchCommand);
        return response.getStatusCode() == 200 ? true : false;
      } catch (ApiException ex) {
        LOG.error(ex.getMessage());
        return false;
      }
    }
    throw new GemClientException("No valid parameter found for present check" + Transformer
        .getBaseDirectoryEntryFromCommandType(command));
  }

}