com.sap.cloud.security.ams.factory.TestDcnPolicyDecisionPointFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of java-ams-test Show documentation
Testing Utilities for applications using SAP Authorization Management Service (AMS) and it's client libraries
The newest version!
/************************************************************************
 * © 2019-2024 SAP SE or an SAP affiliate company. All rights reserved. *
 ************************************************************************/
package com.sap.cloud.security.ams.factory;

import com.sap.cloud.security.ams.dcl.client.pdp.PolicyDecisionPoint;
import com.sap.cloud.security.ams.dcl.client.pdp.PolicyDecisionPointFactory;
import com.sap.cloud.security.ams.logging.PolicyEvaluationSlf4jLogger;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.ConcurrentHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This shall be called with {@code PolicyDecisionPoint.create(DEFAULT)} or {@code
 * PolicyDecisionPoint.create(TEST_SERVER)}. It has to be registered as service to {@code
 * META-INF.services/com.sap.cloud.security.ams.dcl.client.pdp.PolicyDecisionPointFactory}.
 */
public class TestDcnPolicyDecisionPointFactory extends PolicyDecisionPointFactory {
  public static final String DEFAULT = "default";
  public static final String TEST_SERVER = "test-server";
  public static final String SKIP_CACHE = "skip_cache";

  private static final Logger LOGGER =
      LoggerFactory.getLogger(TestDcnPolicyDecisionPointFactory.class);

  /**
   * The output location can be overwritten to support setups, where the compiled results are
   * located project specific. Also, other build infrastructures (e.g. gradle) can be integrated.
   */
  static final String DCL_DEFAULT_LOCATION_PROPERTY = "sap.security.authorization.dcl.test-sources";

  /** Default output location for maven builds. */
  static final String DCL_DEFAULT_LOCATION = "target" + File.separatorChar + "dcl_opa";

  private static final String DCL_RUNTIME_SERVER = "server:dcn-new";
  private static final int PRIORITY = 90;

  @Override
  protected PolicyDecisionPoint tryCreate(String kind, Object[] arguments) throws IOException {
    if (DEFAULT.equalsIgnoreCase(kind) || TEST_SERVER.equalsIgnoreCase(kind)) {
      Object[] extArguments = Arrays.copyOf(arguments, arguments.length + 2);
      extArguments[arguments.length] = "sources";
      extArguments[arguments.length + 1] = getDclSourcesLocation();
      return getOrCreate(DCL_RUNTIME_SERVER, extArguments);
    }
    return null; // can not handle this kind
  }

  @Override
  protected int getPriority() {
    return PRIORITY; // Overwrites the DEFAULT of AmsPolicyDecisionPointFactory by priority
  }

  PolicyDecisionPoint getOrCreate(String kind, Object[] arguments) {
    Object[] extArguments = Arrays.copyOf(arguments, arguments.length + 2);
    extArguments[arguments.length] = SKIP_CACHE;
    extArguments[arguments.length + 1] = true;
    PolicyDecisionPoint pdp = PolicyDecisionPoint.create(kind, extArguments);
    pdp.registerListener(PolicyEvaluationSlf4jLogger.getInstance());
    return pdp;
  }

  File getDclSourcesLocation() throws IOException {
    File file = new File(readDclLocationSystemProperty()).getCanonicalFile();

    if (!file.isDirectory()) {
      String message =
          "PolicyDecisionPoint instantiation failed due to erroneous dcl source folder '"
              + file
              + "'. Cannot start DCL runtime.";
      LOGGER.error(message);
      throw new IllegalStateException(message);
    }
    LOGGER.debug("PolicyDecisionPoint gets initialized with files from {}", file);
    return file;
  }

  String readDclLocationSystemProperty() {
    return System.getProperty(DCL_DEFAULT_LOCATION_PROPERTY, DCL_DEFAULT_LOCATION).trim();
  }
}