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