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/*
* ===============================LICENSE_START======================================
* dcae-analytics
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============================LICENSE_END===========================================
*/
package org.openecomp.dcae.apod.analytics.aai.service;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.Credentials;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
import org.apache.http.ssl.SSLContextBuilder;
import org.openecomp.dcae.apod.analytics.aai.domain.config.AAIHttpClientConfig;
import org.openecomp.dcae.apod.analytics.aai.utils.ssl.AlwaysTrustingTrustStrategy;
import org.openecomp.dcae.apod.analytics.common.exception.DCAEAnalyticsRuntimeException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
/**
* <p>
* A concrete implementation of {@link AAIHttpClient} which provides Apache {@link CloseableHttpClient} for
* making rest calls to A&AI Enrichment API.
* </p>
*
* @author Rajiv Singla . Creation Date: 9/19/2017.
*/
public class AAIHttpClientImpl implements AAIHttpClient {
private static final Logger LOG = LoggerFactory.getLogger(AAIHttpClientImpl.class);
private final AAIHttpClientConfig aaiHttpClientConfig;
@Inject
public AAIHttpClientImpl(@Assisted final AAIHttpClientConfig aaiHttpClientConfig) {
this.aaiHttpClientConfig = aaiHttpClientConfig;
}
/**
* Provides an instance of {@link CloseableHttpClient} used to make REST calls to A&AI Enrichment API
*
* @return An instance of Closeable HTTP Client used to make A&AI API Rest calls
*/
@Override
public CloseableHttpClient getAAIHttpClient() {
final HttpClientBuilder httpClientBuilder = HttpClients.custom().useSystemProperties();
final boolean aaiIgnoreSSLCertificateErrors = aaiHttpClientConfig.isAaiIgnoreSSLCertificateErrors();
// Setup SSL Context to ignore SSL certificate issues if ignoreSSLCertificateErrors is true
LOG.info("SSL Certificate Errors attributed is set to : {}", aaiIgnoreSSLCertificateErrors);
if (aaiIgnoreSSLCertificateErrors) {
LOG.warn("SSL Certificate Errors will be ignored for this A&AI Http Client Instance");
try {
SSLContextBuilder sslContextBuilder = new SSLContextBuilder();
sslContextBuilder.loadTrustMaterial(null, new AlwaysTrustingTrustStrategy());
httpClientBuilder.setSSLContext(sslContextBuilder.build());
} catch (NoSuchAlgorithmException e) {
final String errorMessage = "NoSuchAlgorithmException while setting SSL Context for AAI HTTP Client.";
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
} catch (KeyStoreException e) {
final String errorMessage = "KeyStoreException while setting SSL Context for AAI HTTP Client.";
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
} catch (KeyManagementException e) {
final String errorMessage = "KeyManagementException while setting SSL Context for AAI HTTP Client.";
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
}
httpClientBuilder.setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE);
} else {
LOG.info("SSL Certification Errors will be enforced for A&AI Http Client instance");
}
// Setup credentials and proxy
final String aaiUserName = aaiHttpClientConfig.getAaiUserName();
final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
if (aaiUserName != null) {
final String aaiHost = aaiHttpClientConfig.getAaiHost();
final Integer aaiHostPortNumber = aaiHttpClientConfig.getAaiHostPortNumber();
final String aaiUserPassword = aaiHttpClientConfig.getAaiUserPassword();
LOG.info("Setting A&AI host credentials for AAI Host: {}", aaiHost);
final AuthScope aaiHostPortAuthScope = new AuthScope(aaiHost, aaiHostPortNumber);
final Credentials aaiCredentials = new UsernamePasswordCredentials(aaiUserName, aaiUserPassword);
credentialsProvider.setCredentials(aaiHostPortAuthScope, aaiCredentials);
} else {
LOG.warn("A&AI userName not present. No credentials set for A&AI authentication");
}
final URL aaiProxyURL = aaiHttpClientConfig.getAaiProxyURL();
if (aaiProxyURL != null) {
final String aaiProxyHost = aaiProxyURL.getHost();
final Integer aaiProxyPortNumber = aaiProxyURL.getPort();
final String aaiProxyProtocol = aaiProxyURL.getProtocol();
final HttpHost proxy = new HttpHost(aaiProxyHost, aaiProxyPortNumber, aaiProxyProtocol);
LOG.info("Setting A&AI Http Client default proxy as: {}", proxy);
final DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
httpClientBuilder.setRoutePlanner(routePlanner);
final String userInfo = aaiProxyURL.getUserInfo();
if (StringUtils.isNotBlank(userInfo)) {
final String[] userInfoArray = userInfo.split(":");
final String aaiProxyUsername = userInfoArray[0];
String aaiProxyPassword = null;
if (userInfoArray.length > 1) {
aaiProxyPassword = userInfoArray[1];
}
LOG.info("Setting A&AI Http Client proxy credentials with username: {}", aaiProxyUsername);
final AuthScope aaiProxyAuthScope = new AuthScope(aaiProxyHost, aaiProxyPortNumber);
final Credentials aaiProxyCredentials = new UsernamePasswordCredentials(aaiProxyUsername,
aaiProxyPassword);
credentialsProvider.setCredentials(aaiProxyAuthScope, aaiProxyCredentials);
} else {
LOG.debug("NO A&AI Proxy Username present.Bypassing setting up A&AI Proxy authentication credentials");
}
} else {
LOG.debug("A&AI proxy not Enabled - bypassing setting A&AI Proxy settings");
}
// setup credentials provider
httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
return httpClientBuilder.build();
}
}
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