2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2020-2021 AT&T Intellectual Property. All rights reserved.
6 * Modifications Copyright (C) 2020 Nordix Foundation.
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
20 * SPDX-License-Identifier: Apache-2.0
21 * ============LICENSE_END=========================================================
24 package org.onap.policy.xacml.pdp.application.nativ;
26 import com.att.research.xacml.api.Request;
27 import com.att.research.xacml.api.Response;
28 import com.att.research.xacml.util.XACMLPolicyScanner;
29 import java.io.ByteArrayInputStream;
30 import java.io.IOException;
31 import java.nio.charset.StandardCharsets;
32 import java.util.Base64;
34 import org.onap.policy.common.parameters.annotations.NotBlank;
35 import org.onap.policy.common.parameters.annotations.NotNull;
36 import org.onap.policy.models.decisions.concepts.DecisionRequest;
37 import org.onap.policy.models.decisions.concepts.DecisionResponse;
38 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
39 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyConversionException;
40 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyTranslator;
41 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyTranslatorUtils;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
46 * This class implements one translator that interprets TOSCA policy and decision API request/response payload.
48 * @author Chenfei Gao (cgao@research.att.com)
51 public class NativePdpApplicationTranslator implements ToscaPolicyTranslator {
53 private static final Logger LOGGER = LoggerFactory.getLogger(NativePdpApplicationTranslator.class);
55 public NativePdpApplicationTranslator() {
60 public Object convertPolicy(ToscaPolicy toscaPolicy) throws ToscaPolicyConversionException {
62 // Extract the Base64 encoded policy xml string and decode it
64 String encodedXacmlPolicy = getNativeXacmlPolicy(toscaPolicy);
65 String decodedXacmlPolicy;
67 decodedXacmlPolicy = new String(Base64.getDecoder().decode(encodedXacmlPolicy), StandardCharsets.UTF_8);
68 } catch (IllegalArgumentException exc) {
69 throw new ToscaPolicyConversionException("error on Base64 decoding the native policy", exc);
71 LOGGER.debug("Decoded xacml policy {}", decodedXacmlPolicy);
73 // Scan the string and convert to xacml PolicyType
75 try (var is = new ByteArrayInputStream(decodedXacmlPolicy.getBytes(StandardCharsets.UTF_8))) {
79 Object policy = XACMLPolicyScanner.readPolicy(is);
81 throw new ToscaPolicyConversionException("Invalid XACML Policy");
84 } catch (IOException exc) {
85 throw new ToscaPolicyConversionException("Failed to read policy", exc);
89 private String getNativeXacmlPolicy(ToscaPolicy toscaPolicy) throws ToscaPolicyConversionException {
91 var nativeDefinition = ToscaPolicyTranslatorUtils.decodeProperties(toscaPolicy.getProperties(),
92 NativeDefinition.class);
94 LOGGER.debug("Base64 encoded native xacml policy {}", nativeDefinition.getPolicy());
95 return nativeDefinition.getPolicy();
99 public Request convertRequest(DecisionRequest request) throws ToscaPolicyConversionException {
100 throw new ToscaPolicyConversionException("Do not call native convertRequest");
104 public DecisionResponse convertResponse(Response xacmlResponse) {
106 // We do nothing to DecisionResponse for native xacml application
112 public static class NativeDefinition {
115 private String policy;