gerrit.onap Code Review - cps.git/blob

   1 /*
   2  *  ============LICENSE_START=======================================================
   3  *  Copyright (C) 2024 Nordix Foundation
   4  *  ================================================================================
   5  *  Licensed under the Apache License, Version 2.0 (the "License");
   6  *  you may not use this file except in compliance with the License.
   7  *  You may obtain a copy of the License at
   8  *
   9  *        http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  *  Unless required by applicable law or agreed to in writing, software
  12  *  distributed under the License is distributed on an "AS IS" BASIS,
  13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  *  See the License for the specific language governing permissions and
  15  *  limitations under the License.
  16  *
  17  *  SPDX-License-Identifier: Apache-2.0
  18  *  ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.cps.policyexecutor.stub.controller;
  22
  23 import com.fasterxml.jackson.core.JsonProcessingException;
  24 import com.fasterxml.jackson.databind.ObjectMapper;
  25 import java.util.Locale;
  26 import java.util.regex.Matcher;
  27 import java.util.regex.Pattern;
  28 import lombok.RequiredArgsConstructor;
  29 import org.onap.cps.policyexecutor.stub.api.PolicyExecutorApi;
  30 import org.onap.cps.policyexecutor.stub.model.NcmpDelete;
  31 import org.onap.cps.policyexecutor.stub.model.PolicyExecutionRequest;
  32 import org.onap.cps.policyexecutor.stub.model.PolicyExecutionResponse;
  33 import org.onap.cps.policyexecutor.stub.model.Request;
  34 import org.springframework.http.HttpStatus;
  35 import org.springframework.http.HttpStatusCode;
  36 import org.springframework.http.ResponseEntity;
  37 import org.springframework.web.bind.annotation.RequestMapping;
  38 import org.springframework.web.bind.annotation.RestController;
  39
  40 @RestController
  41 @RequestMapping("${rest.api.policy-executor-base-path}")
  42 @RequiredArgsConstructor
  43 public class PolicyExecutorStubController implements PolicyExecutorApi {
  44
  45     private final ObjectMapper objectMapper;
  46
  47     private static final Pattern ERROR_CODE_PATTERN = Pattern.compile("(\\d{3})");
  48
  49     private int decisionCounter = 0;
  50
  51     @Override
  52     public ResponseEntity<PolicyExecutionResponse> executePolicyAction(
  53                                                      final String action,
  54                                                      final PolicyExecutionRequest policyExecutionRequest,
  55                                                      final String authorization) {
  56         if (policyExecutionRequest.getRequests().isEmpty()) {
  57             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  58         }
  59         final Request firstRequest = policyExecutionRequest.getRequests().iterator().next();
  60         if ("ncmp-delete-schema:1.0.0".equals(firstRequest.getSchema())) {
  61             return handleNcmpDeleteSchema(firstRequest);
  62         }
  63         return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  64     }
  65
  66     private ResponseEntity<PolicyExecutionResponse> handleNcmpDeleteSchema(final Request request) {
  67         final NcmpDelete ncmpDelete;
  68         try {
  69             ncmpDelete = objectMapper.readValue((String) request.getData(), NcmpDelete.class);
  70         } catch (final JsonProcessingException e) {
  71             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  72         }
  73
  74         final String targetIdentifier = ncmpDelete.getTargetIdentifier();
  75         if (targetIdentifier == null) {
  76             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  77         }
  78
  79         final Matcher matcher = ERROR_CODE_PATTERN.matcher(targetIdentifier);
  80         if (matcher.find()) {
  81             final int errorCode = Integer.parseInt(matcher.group(1));
  82             return new ResponseEntity<>(HttpStatusCode.valueOf(errorCode));
  83         }
  84
  85         return createPolicyExecutionResponse(targetIdentifier);
  86     }
  87
  88     private ResponseEntity<PolicyExecutionResponse> createPolicyExecutionResponse(final String targetIdentifier) {
  89         final String decisionId = String.valueOf(++decisionCounter);
  90         final String decision;
  91         final String message;
  92
  93         if (targetIdentifier.toLowerCase(Locale.getDefault()).contains("cps-is-great")) {
  94             decision = "allow";
  95             message = "All good";
  96         } else {
  97             decision = "deny";
  98             message = "Only FDNs containing 'cps-is-great' are allowed";
  99         }
 100
 101         final PolicyExecutionResponse policyExecutionResponse =
 102             new PolicyExecutionResponse(decisionId, decision, message);
 103
 104         return ResponseEntity.ok(policyExecutionResponse);
 105     }
 106
 107 }