| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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 org.apache.geode.management.internal.web.http.support; |
| |
| import static org.apache.geode.internal.util.ProductVersionUtil.getDistributionVersion; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Properties; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.apache.commons.io.IOUtils; |
| import org.springframework.http.HttpEntity; |
| import org.springframework.http.HttpHeaders; |
| import org.springframework.http.HttpMethod; |
| import org.springframework.http.MediaType; |
| import org.springframework.http.ResponseEntity; |
| import org.springframework.http.client.ClientHttpRequest; |
| import org.springframework.http.client.ClientHttpResponse; |
| import org.springframework.http.client.SimpleClientHttpRequestFactory; |
| import org.springframework.http.converter.HttpMessageConverter; |
| import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; |
| import org.springframework.web.client.DefaultResponseErrorHandler; |
| import org.springframework.web.client.RestTemplate; |
| import org.springframework.web.util.UriComponentsBuilder; |
| |
| import org.apache.geode.internal.version.DistributionVersion; |
| import org.apache.geode.management.internal.web.http.converter.SerializableObjectHttpMessageConverter; |
| import org.apache.geode.security.AuthenticationFailedException; |
| import org.apache.geode.security.NotAuthorizedException; |
| |
| |
| /** |
| * The HttpRequester class is a Adapter/facade for the Spring RestTemplate class for abstracting |
| * HTTP requests and operations. |
| * <p> |
| * |
| * @see org.springframework.http.client.SimpleClientHttpRequestFactory |
| * @see org.springframework.web.client.RestTemplate |
| * @since GemFire 8.0 |
| */ |
| @SuppressWarnings("unused") |
| public class HttpRequester { |
| private final RestTemplate restTemplate; |
| private final Properties securityProperties; |
| |
| protected static final String USER_AGENT_HTTP_REQUEST_HEADER_VALUE; |
| |
| static { |
| final DistributionVersion distributionVersion = getDistributionVersion(); |
| USER_AGENT_HTTP_REQUEST_HEADER_VALUE = |
| "gfsh (pronounced " + distributionVersion.getName() + " shell)/v" |
| + distributionVersion.getVersion(); |
| } |
| |
| // a list of acceptable content/media types supported by Gfsh |
| private final List<MediaType> acceptableMediaTypes = Arrays.asList(MediaType.APPLICATION_JSON, |
| MediaType.TEXT_PLAIN, MediaType.APPLICATION_OCTET_STREAM); |
| |
| public HttpRequester() { |
| this(null, null); |
| } |
| |
| public HttpRequester(Properties securityProperties) { |
| this(securityProperties, null); |
| } |
| |
| HttpRequester(Properties securityProperties, RestTemplate restTemplate) { |
| final SimpleClientHttpRequestFactory clientHttpRequestFactory = |
| new SimpleClientHttpRequestFactory(); |
| this.securityProperties = securityProperties; |
| if (restTemplate == null) { |
| this.restTemplate = new RestTemplate(clientHttpRequestFactory); |
| } else { |
| this.restTemplate = restTemplate; |
| } |
| |
| // add our custom HttpMessageConverter for serializing DTO Objects into the HTTP request message |
| // body and de-serializing HTTP response message body content back into DTO Objects |
| List<HttpMessageConverter<?>> converters = this.restTemplate.getMessageConverters(); |
| // remove the MappingJacksonHttpConverter |
| for (int i = converters.size() - 1; i >= 0; i--) { |
| HttpMessageConverter converter = converters.get(i); |
| if (converter instanceof MappingJackson2HttpMessageConverter) { |
| converters.remove(converter); |
| } |
| } |
| converters.add(new SerializableObjectHttpMessageConverter()); |
| |
| this.restTemplate.setErrorHandler(new DefaultResponseErrorHandler() { |
| @Override |
| public void handleError(final ClientHttpResponse response) throws IOException { |
| String body = IOUtils.toString(response.getBody(), StandardCharsets.UTF_8); |
| final String message = String.format("The HTTP request failed with: %1$d - %2$s.", |
| response.getRawStatusCode(), body); |
| |
| if (response.getRawStatusCode() == 401) { |
| throw new AuthenticationFailedException(message); |
| } else if (response.getRawStatusCode() == 403) { |
| throw new NotAuthorizedException(message); |
| } else { |
| throw new RuntimeException(message); |
| } |
| } |
| }); |
| } |
| |
| /** |
| * Gets an instance of the Spring RestTemplate to perform the HTTP operations. |
| * <p> |
| * |
| * @return an instance of the Spring RestTemplate for performing HTTP operations. |
| * @see org.springframework.web.client.RestTemplate |
| */ |
| public RestTemplate getRestTemplate() { |
| return restTemplate; |
| } |
| |
| public <T> T get(URI url, Class<T> responseType) { |
| return exchange(url, HttpMethod.GET, null, responseType); |
| } |
| |
| public <T> T post(URI url, Object content, Class<T> responseType) { |
| return exchange(url, HttpMethod.POST, content, responseType); |
| } |
| |
| <T> T exchange(URI url, HttpMethod method, Object content, |
| Class<T> responseType) { |
| HttpHeaders headers = new HttpHeaders(); |
| addHeaderValues(headers); |
| |
| HttpEntity<Object> httpEntity = new HttpEntity<>(content, headers); |
| |
| final ResponseEntity<T> response = restTemplate.exchange(url, method, httpEntity, responseType); |
| return response.getBody(); |
| } |
| |
| /** |
| * @return either a json representation of ResultModel or a Path |
| */ |
| public Object executeWithResponseExtractor(URI url) { |
| return restTemplate.execute(url, HttpMethod.POST, this::addHeaderValues, this::extractResponse); |
| } |
| |
| void addHeaderValues(ClientHttpRequest request) { |
| addHeaderValues(request.getHeaders()); |
| } |
| |
| /** |
| * @return either a json representation of ResultModel or a Path |
| */ |
| Object extractResponse(ClientHttpResponse response) throws IOException { |
| MediaType mediaType = response.getHeaders().getContentType(); |
| if (mediaType.equals(MediaType.APPLICATION_JSON)) { |
| return org.apache.commons.io.IOUtils.toString(response.getBody(), StandardCharsets.UTF_8); |
| } else { |
| Path tempFile = Files.createTempFile("fileDownload", ""); |
| if (tempFile.toFile().exists()) { |
| FileUtils.deleteQuietly(tempFile.toFile()); |
| } |
| Files.copy(response.getBody(), tempFile); |
| return tempFile; |
| } |
| } |
| |
| void addHeaderValues(HttpHeaders headers) { |
| // update the headers |
| headers.add(HttpHeaders.USER_AGENT, USER_AGENT_HTTP_REQUEST_HEADER_VALUE); |
| headers.setAccept(acceptableMediaTypes); |
| |
| if (securityProperties != null) { |
| for (String key : securityProperties.stringPropertyNames()) { |
| headers.add(key, securityProperties.getProperty(key)); |
| } |
| } |
| } |
| |
| /** |
| * build the url using the path and query params |
| * |
| * @param path : the part after the baseUrl |
| * @param queryParams this needs to be an even number of strings in the form of paramName, |
| * paramValue.... |
| */ |
| public static URI createURI(String baseUrl, String path, String... queryParams) { |
| UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(baseUrl).path(path); |
| |
| if (queryParams != null) { |
| if (queryParams.length % 2 != 0) { |
| throw new IllegalArgumentException("invalid queryParams count"); |
| } |
| for (int i = 0; i < queryParams.length; i += 2) { |
| builder.queryParam(queryParams[i], queryParams[i + 1]); |
| } |
| } |
| return builder.build().encode().toUri(); |
| } |
| } |