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.databind.ObjectMapper;
  24 import java.util.Locale;
  25 import java.util.regex.Matcher;
  26 import java.util.regex.Pattern;
  27 import lombok.RequiredArgsConstructor;
  28 import lombok.extern.slf4j.Slf4j;
  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.RestController;
  38
  39 @RestController
  40 @RequiredArgsConstructor
  41 @Slf4j
  42 public class PolicyExecutorStubController implements PolicyExecutorApi {
  43
  44     private final ObjectMapper objectMapper;
  45     private static final Pattern ERROR_CODE_PATTERN = Pattern.compile("(\\d{3})");
  46     private int decisionCounter = 0;
  47
  48     @Override
  49     public ResponseEntity<PolicyExecutionResponse> executePolicyAction(
  50                                                      final String action,
  51                                                      final PolicyExecutionRequest policyExecutionRequest,
  52                                                      final String authorization) {
  53         log.info("Stub Policy Executor Invoked (only supports 'delete' operations)");
  54         if (policyExecutionRequest.getRequests().isEmpty()) {
  55             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  56         }
  57         final Request firstRequest = policyExecutionRequest.getRequests().iterator().next();
  58         log.info("1st Request Schema:{}", firstRequest.getSchema());
  59         if (firstRequest.getSchema().contains("ncmp-delete-schema:1.0.0")) {
  60             return handleNcmpDeleteSchema(firstRequest);
  61         }
  62         log.warn("This stub only supports 'delete' operations");
  63         return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  64     }
  65
  66     private ResponseEntity<PolicyExecutionResponse> handleNcmpDeleteSchema(final Request request) {
  67         final NcmpDelete ncmpDelete = objectMapper.convertValue(request.getData(), NcmpDelete.class);
  68
  69         final String targetIdentifier = ncmpDelete.getTargetIdentifier();
  70
  71         if (targetIdentifier == null) {
  72             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  73         }
  74
  75         final Matcher matcher = ERROR_CODE_PATTERN.matcher(targetIdentifier);
  76         if (matcher.find()) {
  77             final int errorCode = Integer.parseInt(matcher.group(1));
  78             return new ResponseEntity<>(HttpStatusCode.valueOf(errorCode));
  79         }
  80
  81         return createPolicyExecutionResponse(targetIdentifier);
  82     }
  83
  84     private ResponseEntity<PolicyExecutionResponse> createPolicyExecutionResponse(final String targetIdentifier) {
  85         final String decisionId = String.valueOf(++decisionCounter);
  86         final String decision;
  87         final String message;
  88
  89         if (targetIdentifier.toLowerCase(Locale.getDefault()).contains("cps-is-great")) {
  90             decision = "allow";
  91             message = "All good";
  92         } else {
  93             decision = "deny";
  94             message = "Only FDNs containing 'cps-is-great' are allowed";
  95         }
  96         log.info("Decision: {} ({})", decision, message);
  97         final PolicyExecutionResponse policyExecutionResponse =
  98             new PolicyExecutionResponse(decisionId, decision, message);
  99
 100         return ResponseEntity.ok(policyExecutionResponse);
 101     }
 102
 103 }