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package org.openecomp.sdc.common.http.client.api;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScheme;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.AuthCache;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.*;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.BasicAuthCache;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.openecomp.sdc.be.config.BeEcompErrorManager;
import org.openecomp.sdc.be.config.BeEcompErrorManager.ErrorSeverity;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.common.datastructure.FunctionalInterfaces.FunctionThrows;
import org.openecomp.sdc.common.log.wrappers.Logger;
import java.io.IOException;
import java.net.URI;
import java.util.Properties;
public class HttpClient {
private static final Logger logger = Logger.getLogger(HttpClient.class.getName());
private final CloseableHttpClient client;
private final HttpClientConfigImmutable configImmutable;
HttpClient(CloseableHttpClient client, HttpClientConfigImmutable configImmutable) {
this.client = client;
this.configImmutable = configImmutable;
}
<T> HttpResponse<T> get(String url, Properties headers, FunctionThrows<CloseableHttpResponse, HttpResponse<T>, Exception> responseBuilder) throws HttpExecuteException {
HttpGet httpGet = new HttpGet(url);
return execute(httpGet, headers, responseBuilder);
}
<T> HttpResponse<T> put(String url, Properties headers, HttpEntity entity, FunctionThrows<CloseableHttpResponse, HttpResponse<T>, Exception> responseBuilder) throws HttpExecuteException {
HttpPut httpPut = new HttpPut(url);
httpPut.setEntity(entity);
return execute(httpPut, headers, responseBuilder);
}
<T> HttpResponse<T> post(String url, Properties headers, HttpEntity entity, FunctionThrows<CloseableHttpResponse, HttpResponse<T>, Exception> responseBuilder) throws HttpExecuteException {
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(entity);
return execute(httpPost, headers, responseBuilder);
}
<T> HttpResponse<T> patch(String url, Properties headers, HttpEntity entity, FunctionThrows<CloseableHttpResponse, HttpResponse<T>, Exception> responseBuilder) throws HttpExecuteException {
HttpPatch httpPatch = new HttpPatch(url);
httpPatch.setEntity(entity);
return execute(httpPatch, headers, responseBuilder);
}
<T> HttpResponse<T> delete(String url, Properties headers, FunctionThrows<CloseableHttpResponse, HttpResponse<T>, Exception> responseBuilder) throws HttpExecuteException {
HttpDelete httpDelete = new HttpDelete(url);
return execute(httpDelete, headers, responseBuilder);
}
void close() {
try {
client.close();
}
catch (IOException e) {
logger.debug("Close http client failed with exception ", e);
}
}
private <T> HttpResponse<T> execute(HttpRequestBase request, Properties headers, FunctionThrows<CloseableHttpResponse, HttpResponse<T>, Exception> responseBuilder) throws HttpExecuteException {
if(configImmutable.getHeaders() != null) {
configImmutable.getHeaders().forEach(request::addHeader);
}
if (headers != null) {
headers.forEach((k, v) -> request.addHeader(k.toString(), v.toString()));
}
HttpClientContext httpClientContext = null;
if(request.getHeaders(HttpHeaders.AUTHORIZATION).length == 0) {
httpClientContext = createHttpContext(request.getURI());
}
logger.debug("Execute request {}", request.getRequestLine());
try (CloseableHttpResponse response = client.execute(request, httpClientContext)) {
return responseBuilder.apply(response);
}
catch (Exception e) {
String description = String.format("Execute request %s failed with exception: %s", request.getRequestLine(), e.getMessage());
BeEcompErrorManager.getInstance().logInternalFlowError("ExecuteRestRequest", description, ErrorSeverity.ERROR);
logger.debug("{}: ",description, e);
throw new HttpExecuteException(description, e);
}
}
private HttpClientContext createHttpContext(URI uri) {
if(StringUtils.isEmpty(configImmutable.getBasicAuthUserName()) || StringUtils.isEmpty(configImmutable.getBasicAuthPassword())) {
return null;
}
CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
int port = getPort(uri);
credentialsProvider.setCredentials(new AuthScope(uri.getHost(), port),
new UsernamePasswordCredentials(configImmutable.getBasicAuthUserName(), configImmutable.getBasicAuthPassword()));
HttpClientContext localContext = HttpClientContext.create();
localContext.setCredentialsProvider(credentialsProvider);
AuthCache authCache = new BasicAuthCache();
authCache.put(new HttpHost(uri.getHost(), port), (AuthScheme) new BasicScheme());
localContext.setAuthCache(authCache);
return localContext;
}
private int getPort(URI uri) {
int port = uri.getPort();
if(port < 0) {
if(Constants.HTTPS.equals(uri.getScheme())) {
port = 443;
}
else
if (Constants.HTTP.equals(uri.getScheme())) {
port = 80;
}
else {
port = AuthScope.ANY_PORT;
logger.debug("Protocol \"{}\" is not supported, set port to {}", uri.getScheme(), port);
}
}
return port;
}
}
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