2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2020 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.apache.commons.collections4.MapUtils;
35 import org.onap.policy.models.decisions.concepts.DecisionRequest;
36 import org.onap.policy.models.decisions.concepts.DecisionResponse;
37 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
38 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyConversionException;
39 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyTranslator;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
44 * This class implements one translator that interprets TOSCA policy and decision API request/response payload.
46 * @author Chenfei Gao (cgao@research.att.com)
49 public class NativePdpApplicationTranslator implements ToscaPolicyTranslator {
51 private static final Logger LOGGER = LoggerFactory.getLogger(NativePdpApplicationTranslator.class);
52 private static final String POLICY = "policy";
54 public NativePdpApplicationTranslator() {
59 public Object convertPolicy(ToscaPolicy toscaPolicy) throws ToscaPolicyConversionException {
61 // Extract the Base64 encoded policy xml string and decode it
63 String encodedXacmlPolicy = getNativeXacmlPolicy(toscaPolicy);
64 String decodedXacmlPolicy;
66 decodedXacmlPolicy = new String(Base64.getDecoder().decode(encodedXacmlPolicy), StandardCharsets.UTF_8);
67 } catch (IllegalArgumentException exc) {
68 throw new ToscaPolicyConversionException("error on Base64 decoding the native policy", exc);
70 LOGGER.debug("Decoded xacml policy {}", decodedXacmlPolicy);
72 // Scan the string and convert to xacml PolicyType
74 try (ByteArrayInputStream is = new ByteArrayInputStream(decodedXacmlPolicy.getBytes(StandardCharsets.UTF_8))) {
78 Object policy = XACMLPolicyScanner.readPolicy(is);
80 throw new ToscaPolicyConversionException("Invalid XACML Policy");
83 } catch (IOException exc) {
84 throw new ToscaPolicyConversionException("Failed to read policy", exc);
88 private String getNativeXacmlPolicy(ToscaPolicy toscaPolicy) throws ToscaPolicyConversionException {
90 Map<String, Object> propertyMap = toscaPolicy.getProperties();
91 if (MapUtils.isEmpty(propertyMap) || !propertyMap.containsKey(POLICY)) {
92 throw new ToscaPolicyConversionException("no xacml native policy found in the tosca policy");
95 String nativePolicyString = propertyMap.get(POLICY).toString();
96 LOGGER.debug("Base64 encoded native xacml policy {}", nativePolicyString);
97 return nativePolicyString;
101 public Request convertRequest(DecisionRequest request) throws ToscaPolicyConversionException {
102 throw new ToscaPolicyConversionException("Do not call native convertRequest");
106 public DecisionResponse convertResponse(Response xacmlResponse) {
108 // We do nothing to DecisionResponse for native xacml application