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/*-
* ============LICENSE_START=======================================================
* sdc-distribution-client
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* Modifications copyright (C) 2020 Nokia. 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.sdc.http;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.onap.sdc.api.consumer.IConfiguration;
import org.onap.sdc.utils.Pair;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.ConnectException;
import java.net.UnknownHostException;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
public class HttpSdcClient implements IHttpSdcClient {
private static final Logger log = LoggerFactory.getLogger(HttpSdcClient.class.getName());
private static final boolean ALWAYS_CLOSE_THE_REQUEST_CONNECTION = true;
private final CloseableHttpClient httpClient;
private final String httpSchema;
private final String serverFqdn;
private final HttpRequestFactory httpRequestFactory;
/**
* Constructor
*
* @deprecated
* This constructor will be removed in the future.
*
* @param configuration Sdc client configuration
*/
@Deprecated
public HttpSdcClient(IConfiguration configuration) {
this(configuration.getSdcAddress(),
new HttpClientFactory(configuration),
new HttpRequestFactory(configuration.getUser(), configuration.getPassword())
);
}
public HttpSdcClient(String sdcAddress, HttpClientFactory httpClientFactory, HttpRequestFactory httpRequestFactory) {
this.serverFqdn = sdcAddress;
this.httpRequestFactory = httpRequestFactory;
Pair<String, CloseableHttpClient> httpClientPair = httpClientFactory.createInstance();
this.httpSchema = httpClientPair.getFirst();
this.httpClient = httpClientPair.getSecond();
}
public HttpSdcResponse postRequest(String requestUrl, HttpEntity entity, Map<String, String> headersMap) {
return postRequest(requestUrl, entity, headersMap, ALWAYS_CLOSE_THE_REQUEST_CONNECTION).getFirst();
}
public Pair<HttpSdcResponse, CloseableHttpResponse> postRequest(String requestUrl, HttpEntity entity, Map<String, String> headersMap, boolean closeTheRequest) {
Pair<HttpSdcResponse, CloseableHttpResponse> ret;
final String url = resolveUrl(requestUrl);
log.debug("url to send {}", url);
HttpPost httpPost = httpRequestFactory.createHttpPostRequest(url, headersMap, entity);
CloseableHttpResponse httpResponse = null;
HttpSdcResponse response = null;
try {
httpResponse = httpClient.execute(httpPost);
response = new HttpSdcResponse(httpResponse.getStatusLine().getStatusCode(), httpResponse.getEntity());
} catch (IOException e) {
log.error("failed to send request to url: {}", requestUrl);
response = createHttpResponse(HttpStatus.SC_INTERNAL_SERVER_ERROR, "failed to send request");
} finally {
ret = finalizeHttpRequest(closeTheRequest, httpResponse, response);
}
return ret;
}
public HttpSdcResponse getRequest(String requestUrl, Map<String, String> headersMap) {
return getRequest(requestUrl, headersMap, ALWAYS_CLOSE_THE_REQUEST_CONNECTION).getFirst();
}
public Pair<HttpSdcResponse, CloseableHttpResponse> getRequest(String requestUrl, Map<String, String> headersMap, boolean closeTheRequest) {
Pair<HttpSdcResponse, CloseableHttpResponse> ret;
final String url = resolveUrl(requestUrl);
log.debug("url to send {}", url);
HttpGet httpGet = httpRequestFactory.createHttpGetRequest(url, headersMap);
CloseableHttpResponse httpResponse = null;
HttpSdcResponse response = null;
try {
httpResponse = httpClient.execute(httpGet);
log.debug("GET Response Status {}", httpResponse.getStatusLine().getStatusCode());
Header[] headersRes = httpResponse.getAllHeaders();
Map<String, String> headersResMap = new HashMap<>();
for (Header header : headersRes) {
headersResMap.put(header.getName(), header.getValue());
}
response = new HttpSdcResponse(httpResponse.getStatusLine().getStatusCode(), httpResponse.getEntity(), headersResMap);
} catch (UnknownHostException | ConnectException e) {
log.error("failed to connect to url: {}", requestUrl, e);
response = createHttpResponse(HttpStatus.SC_BAD_GATEWAY, "failed to connect");
} catch (IOException e) {
log.error("failed to send request to url: {} error {}", requestUrl, e.getMessage());
response = createHttpResponse(HttpStatus.SC_BAD_GATEWAY, "failed to send request " + e.getMessage());
} finally {
ret = finalizeHttpRequest(closeTheRequest, httpResponse, response);
}
return ret;
}
String getHttpSchema(){
return this.httpSchema;
}
private String resolveUrl(String requestUrl) {
return this.httpSchema + serverFqdn + requestUrl;
}
private Pair<HttpSdcResponse, CloseableHttpResponse> finalizeHttpRequest(boolean closeTheRequest, CloseableHttpResponse httpResponse, HttpSdcResponse response) {
Pair<HttpSdcResponse, CloseableHttpResponse> ret;
if (closeTheRequest) {
if (httpResponse != null) {
try {
httpResponse.close();
} catch (IOException e) {
log.error("failed to close http response");
}
}
ret = new Pair<>(response, null);
} else {
ret = new Pair<>(response, httpResponse);
}
return ret;
}
static HttpSdcResponse createHttpResponse(int httpStatusCode, String httpMessage) {
return new HttpSdcResponse(httpStatusCode, new StringEntity(httpMessage, StandardCharsets.UTF_8));
}
public void closeHttpClient() {
try {
httpClient.close();
} catch (IOException e) {
log.error("failed to close http client");
}
}
}
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