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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2018 NOKIA Intellectual Property, 2018-2019 Nordix Foundation. 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.dcaegen2.collectors.datafile.service.producer;
import java.nio.charset.StandardCharsets;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.time.Duration;
import java.util.Map;
import java.util.concurrent.Future;
import javax.net.ssl.SSLContext;
import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpResponse;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.impl.nio.client.CloseableHttpAsyncClient;
import org.apache.http.ssl.SSLContextBuilder;
import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
import org.onap.dcaegen2.collectors.datafile.http.HttpAsyncClientBuilderWrapper;
import org.onap.dcaegen2.collectors.datafile.web.PublishRedirectStrategy;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
/**
* Client used to send requests to DataRouter.
*
* @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 7/4/18
* @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
*/
public class DmaapProducerHttpClient {
private static final Duration DEFAULT_REQUEST_TIMEOUT = Duration.ofMinutes(2);
private static final Marker INVOKE = MarkerFactory.getMarker("INVOKE");
private static final Marker INVOKE_RETURN = MarkerFactory.getMarker("INVOKE_RETURN");
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private final DmaapPublisherConfiguration configuration;
/**
* Constructor DmaapProducerReactiveHttpClient.
*
* @param dmaapPublisherConfiguration - DMaaP producer configuration object
*/
public DmaapProducerHttpClient(DmaapPublisherConfiguration dmaapPublisherConfiguration) {
this.configuration = dmaapPublisherConfiguration;
}
/**
* Executes the given request and handles redirects.
*
* @param request the request to execute.
* @param contextMap context for logging.
*
* @return the response from the request.
*
* @throws DatafileTaskException if anything goes wrong.
*/
public HttpResponse getDmaapProducerResponseWithRedirect(HttpUriRequest request, Map<String, String> contextMap)
throws DatafileTaskException {
MDC.setContextMap(contextMap);
try (CloseableHttpAsyncClient webClient = createWebClient(true, DEFAULT_REQUEST_TIMEOUT, contextMap)) {
webClient.start();
logger.trace(INVOKE, "Starting to produce to DR {}", request);
Future<HttpResponse> future = webClient.execute(request, null);
HttpResponse response = future.get();
logger.trace(INVOKE_RETURN, "Response from DR {}", response);
return response;
} catch (Exception e) {
throw new DatafileTaskException("Unable to create web client.", e);
}
}
/**
* Executes the given request using the given timeout time.
*
* @param request the request to execute.
* @param requestTimeout the timeout time for the request.
* @param contextMap context for logging.
*
* @return the response from the request.
*
* @throws DatafileTaskException if anything goes wrong.
*/
public HttpResponse getDmaapProducerResponseWithCustomTimeout(HttpUriRequest request, Duration requestTimeout,
Map<String, String> contextMap) throws DatafileTaskException {
MDC.setContextMap(contextMap);
try (CloseableHttpAsyncClient webClient = createWebClient(false, requestTimeout, contextMap)) {
webClient.start();
logger.trace(INVOKE, "Starting to produce to DR {}", request);
Future<HttpResponse> future = webClient.execute(request, null);
HttpResponse response = future.get();
logger.trace(INVOKE_RETURN, "Response from DR {}", response);
return response;
} catch (Exception e) {
throw new DatafileTaskException("Unable to create web client.", e);
}
}
/**
* Adds the user credentials needed to talk to DataRouter to the provided request.
*
* @param request the request to add credentials to.
*/
public void addUserCredentialsToHead(HttpUriRequest request) {
String plainCreds = configuration.dmaapUserName() + ":" + configuration.dmaapUserPassword();
byte[] plainCredsBytes = plainCreds.getBytes(StandardCharsets.ISO_8859_1);
byte[] base64CredsBytes = Base64.encodeBase64(plainCredsBytes);
String base64Creds = new String(base64CredsBytes);
logger.trace("base64Creds...: {}", base64Creds);
request.addHeader("Authorization", "Basic " + base64Creds);
}
private CloseableHttpAsyncClient createWebClient(boolean expectRedirect, Duration requestTimeout,
Map<String, String> contextMap) throws KeyManagementException, NoSuchAlgorithmException, KeyStoreException {
SSLContext sslContext =
new SSLContextBuilder().loadTrustMaterial(null, (certificate, authType) -> true).build();
HttpAsyncClientBuilderWrapper clientBuilder = getHttpClientBuilder();
clientBuilder.setSslContext(sslContext) //
.setSslHostnameVerifier(new NoopHostnameVerifier());
if (expectRedirect) {
clientBuilder.setRedirectStrategy(new PublishRedirectStrategy(contextMap));
}
if (requestTimeout.toMillis() > 0) {
int millis = (int) requestTimeout.toMillis();
RequestConfig requestConfig = RequestConfig.custom() //
.setSocketTimeout(millis) //
.setConnectTimeout(millis) //
.setConnectionRequestTimeout(millis) //
.build();
clientBuilder.setDefaultRequestConfig(requestConfig);
} else {
logger.error("WEB client without timeout created {}", requestTimeout);
}
return clientBuilder.build();
}
HttpAsyncClientBuilderWrapper getHttpClientBuilder() {
return new HttpAsyncClientBuilderWrapper();
}
}
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