Java tutorial
/* * Copyright 2014-2016 the original author or authors. * * 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 io.pivotal.strepsirrhini.chaoslemur.infrastructure; import org.apache.commons.codec.binary.Base64; import org.apache.http.Header; import org.apache.http.auth.AuthScope; import org.apache.http.auth.UsernamePasswordCredentials; import org.apache.http.client.CredentialsProvider; import org.apache.http.client.HttpClient; import org.apache.http.conn.ssl.AllowAllHostnameVerifier; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.apache.http.conn.ssl.SSLContexts; import org.apache.http.conn.ssl.TrustSelfSignedStrategy; import org.apache.http.impl.client.BasicCredentialsProvider; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.message.BasicHeader; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; import org.springframework.http.HttpEntity; import org.springframework.http.client.ClientHttpRequestInterceptor; import org.springframework.http.client.HttpComponentsClientHttpRequestFactory; import org.springframework.stereotype.Component; import org.springframework.util.LinkedMultiValueMap; import org.springframework.util.MultiValueMap; import org.springframework.web.client.RestTemplate; import org.springframework.web.util.UriComponentsBuilder; import javax.net.ssl.SSLContext; import java.net.URI; import java.security.GeneralSecurityException; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Set; import java.util.stream.Collectors; @Component @ConditionalOnProperty("director.host") final class StandardDirectorUtils implements DirectorUtils { private static final Logger log = LoggerFactory.getLogger(StandardDirectorUtils.class); private final RestTemplate restTemplate; private final URI root; @Autowired StandardDirectorUtils(@Value("${director.host}") String host, @Value("${director.username}") String username, @Value("${director.password}") String password, Set<ClientHttpRequestInterceptor> interceptors) throws GeneralSecurityException { this(createRestTemplate(host, username, password, interceptors), UriComponentsBuilder.newInstance().scheme("https").host(host).port(25555).build().toUri()); } StandardDirectorUtils(RestTemplate restTemplate, URI root) { this.restTemplate = restTemplate; this.root = root; } @SuppressWarnings("unchecked") @Override public Set<String> getDeployments() { URI deploymentsUri = UriComponentsBuilder.fromUri(this.root).path("deployments").build().toUri(); List<Map<String, String>> deployments = this.restTemplate.getForObject(deploymentsUri, List.class); return deployments.stream().map(deployment -> deployment.get("name")).collect(Collectors.toSet()); } @SuppressWarnings("unchecked") @Override public Set<Map<String, String>> getVirtualMachines(String deployment) { URI vmsUri = UriComponentsBuilder.fromUri(this.root).pathSegment("deployments", deployment, "vms").build() .toUri(); return this.restTemplate.getForObject(vmsUri, Set.class); } private static RestTemplate createRestTemplate(String host, String username, String password, Set<ClientHttpRequestInterceptor> interceptors) throws GeneralSecurityException { String directorUaaBearerToken = getBoshDirectorUaaToken(host, username, password); SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).useTLS() .build(); SSLConnectionSocketFactory connectionFactory = new SSLConnectionSocketFactory(sslContext, new AllowAllHostnameVerifier()); Header auth = new BasicHeader("Authorization", String.format("Bearer %s", directorUaaBearerToken)); Header accept = new BasicHeader("Accept", "*/*"); List<Header> headers = new ArrayList<Header>(); headers.add(auth); headers.add(accept); HttpClient httpClient = HttpClientBuilder.create().disableRedirectHandling().setDefaultHeaders(headers) .setSSLSocketFactory(connectionFactory).build(); RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory(httpClient)); restTemplate.getInterceptors().addAll(interceptors); return restTemplate; } private static String getBoshDirectorUaaToken(String host, String directorName, String password) throws GeneralSecurityException { SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).useTLS() .build(); SSLConnectionSocketFactory connectionFactory = new SSLConnectionSocketFactory(sslContext, new AllowAllHostnameVerifier()); HttpClient httpClient = HttpClientBuilder.create().disableRedirectHandling() .setSSLSocketFactory(connectionFactory).build(); RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory(httpClient)); MultiValueMap<String, String> headers = new LinkedMultiValueMap<String, String>(); String base64Passowrd = encodePassword(directorName, password); headers.add("Authorization", "Basic " + base64Passowrd); headers.add("Content-Type", "application/x-www-form-urlencoded"); String postArgs = "grant_type=client_credentials"; HttpEntity<String> requestEntity = new HttpEntity<String>(postArgs, headers); String uri = "https://" + host + ":8443/oauth/token"; UaaToken response = restTemplate.postForObject(uri, requestEntity, UaaToken.class); log.info("Uaa token:" + response); return response.getAccess_token(); } public static String encodePassword(String username, String passowrd) { String plainCreds = username + ":" + passowrd; byte[] plainCredsBytes = plainCreds.getBytes(); byte[] base64CredsBytes = Base64.encodeBase64(plainCredsBytes); return new String(base64CredsBytes); } }