content: /*
   * Copyright 1999-$toady.year Alibaba Group Holding Ltd.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.alibaba.nacos.maintainer.client.remote;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.common.http.HttpClientConfig;
  import com.alibaba.nacos.common.http.HttpRestResult;
  import com.alibaba.nacos.common.http.client.NacosRestTemplate;
  import com.alibaba.nacos.maintainer.client.address.DefaultServerListManager;
  import com.alibaba.nacos.maintainer.client.model.HttpRequest;
  import com.alibaba.nacos.maintainer.client.utils.ParamUtil;
  import com.alibaba.nacos.plugin.auth.api.RequestResource;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import java.lang.reflect.Field;
  import java.util.HashMap;
  import java.util.Properties;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.ArgumentMatchers.anyString;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  public class ClientHttpProxyTest {
      
      private static final RequestResource REQUEST_RESOURCE = new RequestResource();
      
      private ClientHttpProxy clientHttpProxy;
      
      private DefaultServerListManager mockServerListManager;
      
      private NacosRestTemplate mockNacosRestTemplate;
      
      private int cachedReadTimeout;
      
      @BeforeEach
      public void setUp() throws Exception {
          cachedReadTimeout = ParamUtil.getReadTimeout();
          mockServerListManager = mock(DefaultServerListManager.class);
          mockNacosRestTemplate = mock(NacosRestTemplate.class);
          
          HttpClientManager mockHttpClientManager = mock(HttpClientManager.class);
          when(mockHttpClientManager.getNacosRestTemplate()).thenReturn(mockNacosRestTemplate);
          
          Field instanceField = HttpClientManager.class.getDeclaredField("httpClientManager");
          instanceField.setAccessible(true);
          instanceField.set(null, mockHttpClientManager);
          
          Properties properties = new Properties();
          properties.setProperty("serverAddr", "localhost:8848");
          clientHttpProxy = new ClientHttpProxy(properties);
          
          Field serverListManagerField = ClientHttpProxy.class.getDeclaredField("serverListManager");
          serverListManagerField.setAccessible(true);
          serverListManagerField.set(clientHttpProxy, mockServerListManager);
      }
      
      @AfterEach
      void tearDown() throws NacosException {
          clientHttpProxy.shutdown();
          ParamUtil.setReadTimeout(cachedReadTimeout);
      }
      
      @Test
      void testExecuteSyncHttpRequestSuccess() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          
          HttpRestResult<Object> mockResult = new HttpRestResult<>();
          mockResult.setCode(200);
          mockResult.setData("Success");
          when(mockNacosRestTemplate.get(anyString(), any(), any(), any(), eq(String.class))).thenReturn(mockResult);
          
          HttpRequest request = new HttpRequest("GET", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
          
          verify(mockNacosRestTemplate, times(1)).get(anyString(), any(), any(), any(), eq(String.class));
      }
      
      @Test
      void testExecuteSyncHttpRequestRetryOnFailure() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          when(mockServerListManager.genNextServer()).thenReturn("localhost:8848");
          
          HttpRestResult<Object> mockFailureResult = new HttpRestResult<>();
          mockFailureResult.setCode(500);
          HttpRestResult<Object> mockSuccessResult = new HttpRestResult<>();
          mockSuccessResult.setCode(200);
          mockSuccessResult.setData("Success");
          
          when(mockNacosRestTemplate.get(anyString(), any(), any(), any(), eq(String.class))).thenReturn(
                  mockFailureResult).thenReturn(mockSuccessResult);
          
          HttpRequest request = new HttpRequest("GET", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
          
          verify(mockNacosRestTemplate, times(2)).get(anyString(), any(), any(), any(), eq(String.class));
      }
      
      @Test
      void testExecuteSyncHttpRequestRetryOnException() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          when(mockServerListManager.genNextServer()).thenReturn("localhost:8848");
          
          HttpRestResult<Object> mockSuccessResult = new HttpRestResult<>();
          mockSuccessResult.setCode(200);
          mockSuccessResult.setData("Success");
          
          when(mockNacosRestTemplate.get(anyString(), any(), any(), any(), eq(String.class))).thenThrow(
                  new RuntimeException("Mock")).thenReturn(mockSuccessResult);
          
          HttpRequest request = new HttpRequest("GET", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
          
          verify(mockNacosRestTemplate, times(2)).get(anyString(), any(), any(), any(), eq(String.class));
      }
      
      @Test
      void testExecuteSyncHttpRequestRetryOnExceptionExceeded() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          when(mockServerListManager.genNextServer()).thenReturn("localhost:8848");
          
          when(mockNacosRestTemplate.get(anyString(), any(), any(), any(), eq(String.class))).thenThrow(
                  new RuntimeException("Mock"));
          
          HttpRequest request = new HttpRequest("GET", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          
          assertThrows(NacosException.class, () -> clientHttpProxy.executeSyncHttpRequest(request),
                  "No available server after 3 retries, last tried server: localhost:8848");
          
          verify(mockNacosRestTemplate, times(4)).get(anyString(), any(), any(), any(), eq(String.class));
      }
      
      @Test
      void testExecuteSyncHttpRequestMaxRetryExceeded() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          when(mockServerListManager.genNextServer()).thenReturn("localhost:8848");
          
          HttpRestResult<Object> mockFailureResult = new HttpRestResult<>();
          mockFailureResult.setCode(500);
          when(mockNacosRestTemplate.get(anyString(), any(), any(), any(), eq(String.class))).thenReturn(
                  mockFailureResult);
          
          HttpRequest request = new HttpRequest("GET", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          
          Exception exception = assertThrows(NacosException.class, () -> {
              clientHttpProxy.executeSyncHttpRequest(request);
          });
          
          assertTrue(exception.getMessage().contains("No available server after"));
          
          verify(mockNacosRestTemplate, times(4)).get(anyString(), any(), any(), any(), eq(String.class));
      }
      
      @Test
      void testExecuteSyncHttpRequestTimeout() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          when(mockServerListManager.genNextServer()).thenReturn("localhost:8848");
          ParamUtil.setReadTimeout(10);
          
          HttpRestResult<Object> mockFailureResult = new HttpRestResult<>();
          mockFailureResult.setCode(500);
          when(mockNacosRestTemplate.get(anyString(), any(), any(), any(), eq(String.class))).thenReturn(
                  mockFailureResult);
          
          HttpRequest request = new HttpRequest("GET", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          
          Exception exception = assertThrows(NacosException.class, () -> {
              clientHttpProxy.executeSyncHttpRequest(request);
          });
          
          assertTrue(exception.getMessage().contains("No available server after"));
          
          verify(mockNacosRestTemplate, times(1)).get(anyString(), any(), any(), any(), eq(String.class));
      }
      
      @Test
      void testExecuteSyncHttpRequestRetryOnNoRight() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          when(mockServerListManager.genNextServer()).thenReturn("localhost:8848");
          
          HttpRestResult<Object> mockFailureResult = new HttpRestResult<>();
          mockFailureResult.setCode(403);
          HttpRestResult<Object> mockSuccessResult = new HttpRestResult<>();
          mockSuccessResult.setCode(200);
          mockSuccessResult.setData("Success");
          
          when(mockNacosRestTemplate.get(anyString(), any(), any(), any(), eq(String.class))).thenReturn(
                  mockFailureResult).thenReturn(mockSuccessResult);
          
          HttpRequest request = new HttpRequest("GET", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
          
          verify(mockNacosRestTemplate, times(2)).get(anyString(), any(), any(), any(), eq(String.class));
      }
      
      @Test
      void testExecutePostBody() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          HttpRestResult<Object> mockSuccessResult = new HttpRestResult<>();
          mockSuccessResult.setCode(200);
          mockSuccessResult.setData("Success");
          when(mockNacosRestTemplate.postJson(anyString(), any(), any(), any(), eq(String.class))).thenReturn(
                  mockSuccessResult);
          HttpRequest request = new HttpRequest("POST", "/test", new HashMap<>(), new HashMap<>(), "{\"key\":\"test\"}",
                  REQUEST_RESOURCE);
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
      }
      
      @Test
      void testExecutePostForm() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          HttpRestResult<Object> mockSuccessResult = new HttpRestResult<>();
          mockSuccessResult.setCode(200);
          mockSuccessResult.setData("Success");
          when(mockNacosRestTemplate.postForm(anyString(), any(HttpClientConfig.class), any(), any(),
                  eq(String.class))).thenReturn(mockSuccessResult);
          HttpRequest request = new HttpRequest("POST", "/test", new HashMap<>(), new HashMap<>(), null,
                  REQUEST_RESOURCE);
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
      }
      
      @Test
      void testExecutePut() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          HttpRestResult<Object> mockSuccessResult = new HttpRestResult<>();
          mockSuccessResult.setCode(200);
          mockSuccessResult.setData("Success");
          when(mockNacosRestTemplate.putForm(anyString(), any(HttpClientConfig.class), any(), any(),
                  eq(String.class))).thenReturn(mockSuccessResult);
          HttpRequest request = new HttpRequest("PUT", "/test", new HashMap<>(), new HashMap<>(), null, REQUEST_RESOURCE);
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
      }
      
      @Test
      void testExecuteDelete() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          HttpRestResult<Object> mockSuccessResult = new HttpRestResult<>();
          mockSuccessResult.setCode(200);
          mockSuccessResult.setData("Success");
          when(mockNacosRestTemplate.delete(anyString(), any(HttpClientConfig.class), any(), any(),
                  eq(String.class))).thenReturn(mockSuccessResult);
          HttpRequest request = new HttpRequest("DELETE", "/test", new HashMap<>(), new HashMap<>(), null,
                  REQUEST_RESOURCE);
          HttpRestResult<String> result = clientHttpProxy.executeSyncHttpRequest(request);
          assertNotNull(result);
          assertEquals(200, result.getCode());
          assertEquals("Success", result.getData());
      }
      
      @Test
      void testOtherHttpMethod() throws Exception {
          when(mockServerListManager.getCurrentServer()).thenReturn("http://127.0.0.1:8848");
          HttpRequest request = new HttpRequest("PATCH", "/test", new HashMap<>(), new HashMap<>(), null,
                  REQUEST_RESOURCE);
          assertThrows(NacosException.class, () -> clientHttpProxy.executeSyncHttpRequest(request));
          
      }
  }
  
  
  