webapp-backend/src/test/java/org/oransc/ric/portal/dashboard/config/CaasIngressMockConfiguration.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2019 AT&T Intellectual Property
   6  * %%
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ========================LICENSE_END===================================
  19  */
  20 package org.oransc.ric.portal.dashboard.config;
  21
  22 import static org.mockito.ArgumentMatchers.any;
  23 import static org.mockito.Mockito.doAnswer;
  24 import static org.mockito.Mockito.mock;
  25 import static org.mockito.Mockito.when;
  26
  27 import java.io.IOException;
  28 import java.io.InputStream;
  29 import java.io.InputStreamReader;
  30 import java.lang.invoke.MethodHandles;
  31
  32 import org.oransc.ric.portal.dashboard.k8sapi.SimpleKubernetesClient;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35 import org.springframework.beans.factory.annotation.Autowired;
  36 import org.springframework.beans.factory.annotation.Value;
  37 import org.springframework.context.annotation.Bean;
  38 import org.springframework.context.annotation.Configuration;
  39 import org.springframework.context.annotation.Profile;
  40
  41 /**
  42  * Creates mock implementations of Kubernetes clients that answer requests with
  43  * sample data read from the filesystem.
  44  */
  45 @Configuration
  46 @Profile("test")
  47 public class CaasIngressMockConfiguration {
  48
  49         private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  50
  51         // Simulate remote method delay for UI testing
  52         private int delayMs;
  53
  54         @Autowired
  55         public CaasIngressMockConfiguration(@Value("${mock.config.delay:0}") int delayMs) {
  56                 logger.debug("ctor: configured with delay {}", delayMs);
  57                 this.delayMs = delayMs;
  58         }
  59
  60         private String readDataFromPath(String path) throws IOException {
  61                 InputStream is = MethodHandles.lookup().lookupClass().getClassLoader().getResourceAsStream(path);
  62                 if (is == null) {
  63                         String msg = "Failed to find resource on classpath: " + path;
  64                         logger.error(msg);
  65                         throw new RuntimeException(msg);
  66                 }
  67                 InputStreamReader reader = new InputStreamReader(is, "UTF-8");
  68                 StringBuilder sb = new StringBuilder();
  69                 char[] buf = new char[8192];
  70                 int i;
  71                 while ((i = reader.read(buf)) > 0)
  72                         sb.append(buf, 0, i);
  73                 reader.close();
  74                 is.close();
  75                 return sb.toString();
  76         }
  77
  78         private SimpleKubernetesClient simpleKubernetesClient(String instanceKey) throws IOException {
  79                 // File in src/test/resources
  80                 String pltPods;
  81                 if (RICInstanceMockConfiguration.INSTANCE_KEY_1.equals(instanceKey))
  82                         pltPods = readDataFromPath("caas-ingress-ricplt-pods-1.json");
  83                 else
  84                         pltPods = readDataFromPath("caas-ingress-ricplt-pods-2.json");
  85                 SimpleKubernetesClient mockClient = mock(SimpleKubernetesClient.class);
  86                 doAnswer(inv -> {
  87                         String ns = inv.<String>getArgument(0);
  88                         logger.debug("listPods for namespace {}", ns);
  89                         if (delayMs > 0) {
  90                                 logger.debug("listPods sleeping {}", delayMs);
  91                                 Thread.sleep(delayMs);
  92                         }
  93                         if ("ricplt".equals(ns))
  94                                 return pltPods;
  95                         else
  96                                 throw new IllegalArgumentException("Fake server failure");
  97                 }).when(mockClient).listPods(any(String.class));
  98                 return mockClient;
  99         }
 100
 101         @Bean
 102         // The bean (method) name must be globally unique
 103         public SimpleKubernetesClientBuilder simpleKubernetesClientBuilder() throws IOException {
 104                 final SimpleKubernetesClientBuilder mockBuilder = mock(SimpleKubernetesClientBuilder.class);
 105                 for (final String key : RICInstanceMockConfiguration.INSTANCE_KEYS) {
 106                         SimpleKubernetesClient client = simpleKubernetesClient(key);
 107                         when(mockBuilder.getSimpleKubernetesClient(key)).thenReturn(client);
 108                 }
 109                 return mockBuilder;
 110         }
 111
 112 }