gerrit.onap Code Review - cps.git/blob

   1 /*
   2  *  ============LICENSE_START=======================================================
   3  *  Copyright (C) 2024-2025 OpenInfra Foundation Europe. All rights reserved.
   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 java.util.regex.Matcher;
  24 import java.util.regex.Pattern;
  25 import lombok.RequiredArgsConstructor;
  26 import lombok.extern.slf4j.Slf4j;
  27 import org.onap.cps.policyexecutor.stub.api.OperationPermissionApi;
  28 import org.onap.cps.policyexecutor.stub.model.Operation;
  29 import org.onap.cps.policyexecutor.stub.model.PermissionRequest;
  30 import org.onap.cps.policyexecutor.stub.model.PermissionResponse;
  31 import org.springframework.http.HttpStatus;
  32 import org.springframework.http.HttpStatusCode;
  33 import org.springframework.http.ResponseEntity;
  34 import org.springframework.web.bind.annotation.RequestMapping;
  35 import org.springframework.web.bind.annotation.RestController;
  36
  37 @RestController
  38 @RequestMapping("/operation-permission/v1")
  39 @RequiredArgsConstructor
  40 @Slf4j
  41 public class PolicyExecutorStubController implements OperationPermissionApi {
  42
  43     private final Sleeper sleeper;
  44
  45     private static final Pattern PATTERN_SIMULATION = Pattern.compile("policySimulation=(\\w+_\\w+)");
  46     private static final Pattern PATTERN_HTTP_ERROR = Pattern.compile("httpError_(\\d{3})");
  47     private static final Pattern PATTERN_SLOW_RESPONSE = Pattern.compile("slowResponse_(\\d{1,3})");
  48     private static final Pattern PATTERN_POLICY_RESPONSE = Pattern.compile("policyResponse_(\\w+)");
  49
  50     private int decisionCounter = 0;
  51
  52     @Override
  53     public ResponseEntity<PermissionResponse> initiatePermissionRequest(final String contentType,
  54                                                                         final PermissionRequest permissionRequest,
  55                                                                         final String accept,
  56                                                                         final String authorization) {
  57         log.info("Stub Policy Executor Invoked");
  58         if (permissionRequest.getOperations().isEmpty()) {
  59             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  60         }
  61         final Operation firstOperation = permissionRequest.getOperations().iterator().next();
  62         log.info("1st Operation: {} for resource: {}", firstOperation.getOperation(),
  63                                                        firstOperation.getResourceIdentifier());
  64         if (!"delete".equals(firstOperation.getOperation()) && firstOperation.getChangeRequest() == null) {
  65             log.warn("Change Request is required for {} operations", firstOperation.getOperation());
  66             return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
  67         }
  68         return createPolicyExecutionResponse(firstOperation.getResourceIdentifier());
  69     }
  70
  71     private ResponseEntity<PermissionResponse> createPolicyExecutionResponse(final String resourceIdentifier) {
  72         final String id = String.valueOf(++decisionCounter);
  73         String permissionResult = "allow";
  74         String message = "all good";
  75         Matcher matcher = PATTERN_SIMULATION.matcher(resourceIdentifier);
  76         if (matcher.find()) {
  77             final String simulation = matcher.group(1);
  78             matcher = PATTERN_SLOW_RESPONSE.matcher(simulation);
  79             if (matcher.matches()) {
  80                 try {
  81                     final int slowResponseTimeInSeconds = Integer.parseInt(matcher.group(1));
  82                     sleeper.haveALittleRest(slowResponseTimeInSeconds);
  83                 } catch (final InterruptedException e) {
  84                     log.trace("Sleep interrupted, re-interrupting the thread");
  85                     Thread.currentThread().interrupt(); // Re-interrupt the thread
  86                 }
  87             }
  88             matcher = PATTERN_HTTP_ERROR.matcher(simulation);
  89             if (matcher.matches()) {
  90                 final int errorCode = Integer.parseInt(matcher.group(1));
  91                 log.warn("Stub is mocking an error response, code: {}", errorCode);
  92                 return new ResponseEntity<>(HttpStatusCode.valueOf(errorCode));
  93             }
  94             matcher = PATTERN_POLICY_RESPONSE.matcher(simulation);
  95             if (matcher.matches()) {
  96                 permissionResult = matcher.group(1);
  97                 message = "Stub is mocking a policy response: " + permissionResult;
  98             }
  99         }
 100         log.info("Decision: {} ({})", permissionResult, message);
 101         return ResponseEntity.ok(new PermissionResponse(id, permissionResult, message));
 102     }
 103
 104 }