Java tutorial
/* * 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.rest.internal.web; import org.apache.http.HttpHost; import org.apache.http.HttpResponse; import org.apache.http.auth.AuthScope; import org.apache.http.auth.UsernamePasswordCredentials; import org.apache.http.client.CredentialsProvider; import org.apache.http.client.methods.HttpDelete; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpHead; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.methods.HttpPut; import org.apache.http.client.methods.HttpRequestBase; import org.apache.http.client.protocol.HttpClientContext; import org.apache.http.conn.ssl.NoopHostnameVerifier; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.BasicCredentialsProvider; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.impl.client.HttpClients; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import org.json.JSONTokener; import java.io.IOException; import java.io.InputStreamReader; import java.nio.charset.StandardCharsets; import java.security.KeyStore; import java.security.SecureRandom; import java.security.cert.CertificateException; import java.security.cert.X509Certificate; import javax.net.ssl.KeyManager; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; public class GeodeRestClient { public final static String CONTEXT = "/geode/v1"; private int restPort = 0; private String bindAddress = null; private String protocol = "http"; private boolean useHttps = false; private KeyStore keyStore; public GeodeRestClient(String bindAddress, int restPort) { this.bindAddress = bindAddress; this.restPort = restPort; } public GeodeRestClient(String bindAddress, int restPort, boolean useHttps) { if (useHttps) { this.protocol = "https"; this.useHttps = true; } else { this.protocol = "http"; this.useHttps = false; } this.bindAddress = bindAddress; this.restPort = restPort; } public static String getContentType(HttpResponse response) { return response.getEntity().getContentType().getValue(); } /** * Retrieve the status code of the HttpResponse * * @param response The HttpResponse message received from the server * @return a numeric value */ public static int getCode(HttpResponse response) { return response.getStatusLine().getStatusCode(); } public static JSONObject getJsonObject(HttpResponse response) throws IOException, JSONException { JSONTokener tokener = new JSONTokener(new InputStreamReader(response.getEntity().getContent())); return new JSONObject(tokener); } public static JSONArray getJsonArray(HttpResponse response) throws IOException, JSONException { JSONTokener tokener = new JSONTokener(new InputStreamReader(response.getEntity().getContent())); return new JSONArray(tokener); } public HttpResponse doHEAD(String query, String username, String password) throws Exception { HttpHead httpHead = new HttpHead(CONTEXT + query); return doRequest(httpHead, username, password); } public HttpResponse doPost(String query, String username, String password, String body) throws Exception { HttpPost httpPost = new HttpPost(CONTEXT + query); httpPost.addHeader("content-type", "application/json"); httpPost.setEntity(new StringEntity(body, StandardCharsets.UTF_8)); return doRequest(httpPost, username, password); } public HttpResponse doPut(String query, String username, String password, String body) throws Exception { HttpPut httpPut = new HttpPut(CONTEXT + query); httpPut.addHeader("content-type", "application/json"); httpPut.setEntity(new StringEntity(body, StandardCharsets.UTF_8)); return doRequest(httpPut, username, password); } public HttpResponse doGet(String uri, String username, String password) throws Exception { HttpGet getRequest = new HttpGet(CONTEXT + uri); return doRequest(getRequest, username, password); } public HttpResponse doGetRequest(String url) throws Exception { HttpGet getRequest = new HttpGet(url); return doRequest(getRequest, null, null); } public HttpResponse doDelete(String uri, String username, String password) throws Exception { HttpDelete httpDelete = new HttpDelete(CONTEXT + uri); return doRequest(httpDelete, username, password); } public HttpResponse doRequest(HttpRequestBase request, String username, String password) throws Exception { HttpHost targetHost = new HttpHost(bindAddress, restPort, protocol); HttpClientBuilder clientBuilder = HttpClients.custom(); HttpClientContext clientContext = HttpClientContext.create(); // configures the clientBuilder and clientContext if (username != null) { CredentialsProvider credsProvider = new BasicCredentialsProvider(); credsProvider.setCredentials(new AuthScope(targetHost.getHostName(), targetHost.getPort()), new UsernamePasswordCredentials(username, password)); clientBuilder.setDefaultCredentialsProvider(credsProvider); } if (useHttps) { SSLContext ctx = SSLContext.getInstance("TLS"); ctx.init(new KeyManager[0], new TrustManager[] { new DefaultTrustManager() }, new SecureRandom()); clientBuilder.setSSLContext(ctx); clientBuilder.setSSLHostnameVerifier(new NoopHostnameVerifier()); } return clientBuilder.build().execute(targetHost, request, clientContext); } private static class DefaultTrustManager implements X509TrustManager { @Override public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException { } @Override public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException { } @Override public X509Certificate[] getAcceptedIssuers() { return null; } } }