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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 NOKIA 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.onap.dcaegen2.services.prh.service.producer;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import javax.net.ssl.SSLContext;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.onap.dcaegen2.services.prh.config.DmaapPublisherConfiguration;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
import reactor.core.publisher.Mono;
public class DmaaPRestTemplateFactory {
/**
* Function for creating RestTemplate object.
*
* @param publisherConfiguration - DMaaP publisher configuration object
* @return RestTemplate with correct ssl configuration
*/
public Mono<RestTemplate> build(DmaapPublisherConfiguration publisherConfiguration) {
if (publisherConfiguration.enableDmaapCertAuth()) {
return createRestTemplateWithSslSetup(publisherConfiguration);
}
return Mono.just(new RestTemplate());
}
private Mono<RestTemplate> createRestTemplateWithSslSetup(DmaapPublisherConfiguration publisherConfiguration) {
try {
RestTemplateBuilder builder = new RestTemplateBuilder();
SSLContext sslContext = createSslContext(publisherConfiguration,
loadPasswordFromFile(publisherConfiguration.keyStorePasswordPath()),
loadPasswordFromFile(publisherConfiguration.trustStorePasswordPath()));
return Mono.just(builder
.requestFactory(() -> createRequestFactory(sslContext)).build());
} catch (GeneralSecurityException | IOException e) {
return Mono.error(e);
}
}
private SSLContext createSslContext(DmaapPublisherConfiguration publisherConfiguration,
String keyStorePassword, String trustStorePassword)
throws IOException, GeneralSecurityException {
return new SSLContextBuilder()
.loadKeyMaterial(
keyStore(publisherConfiguration.keyStorePath(), keyStorePassword),
keyStorePassword.toCharArray())
.loadTrustMaterial(
getFile(publisherConfiguration.trustStorePath()), trustStorePassword.toCharArray())
.build();
}
private HttpComponentsClientHttpRequestFactory createRequestFactory(SSLContext sslContext) {
SSLConnectionSocketFactory socketFactory =
new SSLConnectionSocketFactory(sslContext);
HttpClient httpClient = HttpClients.custom()
.setSSLSocketFactory(socketFactory).build();
return new HttpComponentsClientHttpRequestFactory(httpClient);
}
private KeyStore keyStore(String keyStoreFile, String keyStorePassword)
throws GeneralSecurityException, IOException {
KeyStore ks = KeyStore.getInstance("jks");
ks.load(getResource(keyStoreFile), keyStorePassword.toCharArray());
return ks;
}
private File getFile(String fileName) {
return new File(fileName);
}
private InputStream getResource(String fileName) throws FileNotFoundException {
return new FileInputStream(fileName);
}
private String loadPasswordFromFile(String path) throws IOException {
return new String(Files.readAllBytes(Paths.get(path)));
}
}
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