2 * Copyright 2016 Huawei Technologies Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.common.restclient;
19 import java.io.ByteArrayInputStream;
20 import java.io.IOException;
21 import java.io.InputStreamReader;
22 import java.nio.charset.Charset;
23 import java.util.Enumeration;
24 import java.util.HashMap;
26 import java.util.zip.GZIPInputStream;
28 import org.apache.commons.lang.StringUtils;
29 import org.eclipse.jetty.client.ContentExchange;
30 import org.eclipse.jetty.client.HttpDestination;
31 import org.eclipse.jetty.http.HttpFields;
32 import org.eclipse.jetty.http.HttpHeaders;
33 import org.eclipse.jetty.io.Buffer;
34 import org.eclipse.jetty.util.StringUtil;
35 import org.slf4j.Logger;
36 import org.slf4j.LoggerFactory;
39 * ContentExchange implementation classe to provide access to response.
45 * @version 28-May-2016
47 public class RestHttpContentExchange extends ContentExchange {
49 private static final Logger LOGGER = LoggerFactory.getLogger(RestHttpContentExchange.class);
51 private static final String PATH = "path:";
53 private boolean gzip = false;
55 private RestfulAsyncCallback callback = null;
63 * @param cacheFields whether to cache response header.
64 * @param asyncCallback callback method.
66 RestHttpContentExchange(final boolean cacheFields, final RestfulAsyncCallback asyncCallback) {
68 this.callback = asyncCallback;
75 * @param data GZipped data.
76 * @return Uncompressed data.
80 public String decompressGzipToStr(final byte[] data) throws IOException {
84 ByteArrayInputStream input = null;
85 GZIPInputStream gzis = null;
86 InputStreamReader reader = null;
87 final StringBuilder out = new StringBuilder();
89 input = new ByteArrayInputStream(data);
90 gzis = new GZIPInputStream(input);
91 reader = new InputStreamReader(gzis, Charset.forName(RestfulClientConst.ENCODING));
92 final char[] buff = new char[1024];
93 for(int n; (n = reader.read(buff)) != -1;) {
94 out.append(new String(buff, 0, n));
100 } catch(final IOException e) {
101 LOGGER.error("decompress Gzip reader exception:", e);
107 } catch(final IOException e) {
108 LOGGER.error("decompress Gzip exception:", e);
114 } catch(final IOException e) {
115 LOGGER.error("decompress Gzip input exception:", e);
119 return out.toString();
124 * View response headers Content-Encoding values if you need to extract data.<br/>
128 * @throws IOException
132 protected synchronized void onResponseHeader(final Buffer name, final Buffer value) throws IOException {
133 super.onResponseHeader(name, value);
134 final int header = HttpHeaders.CACHE.getOrdinal(name);
135 if(header == HttpHeaders.CONTENT_ENCODING_ORDINAL) {
136 final String encoding = StringUtil.asciiToLowerCase(value.toString());
137 gzip = encoding != null && StringUtils.contains(encoding, "gzip");
143 protected void onResponseComplete() throws IOException {
144 if(LOGGER.isInfoEnabled()) {
145 LOGGER.info("Response has Complete:" + PATH + this.getRequestURI().replace("\n", "0x0A"));
147 super.onResponseComplete();
148 if(callback != null) {
149 final RestfulResponse rsp = getResponse();
150 callback.callback(rsp);
155 protected void onRequestCommitted() throws IOException {
156 if(LOGGER.isInfoEnabled()) {
157 LOGGER.info("Request Header has been send:" + PATH + this.getRequestURI().replace("\n", "0x0A"));
159 super.onRequestCommitted();
163 protected void onRequestComplete() throws IOException {
164 if(LOGGER.isInfoEnabled()) {
165 LOGGER.info("Request has bend send complete:" + PATH + this.getRequestURI().replace("\n", "0x0A"));
167 super.onRequestComplete();
171 protected void onException(final Throwable x) {
172 LOGGER.warn("onException:", x);
173 super.onException(x);
174 if(callback != null) {
175 callback.handleExcepion(x);
180 protected void onConnectionFailed(final Throwable x) {
181 LOGGER.warn("onConnectionFailed:", x);
182 super.onConnectionFailed(x);
183 if(callback != null) {
184 callback.handleExcepion(x);
190 protected void expire(final HttpDestination destination) {
191 super.expire(destination);
192 if(callback != null) {
193 callback.handleExcepion(new ServiceException("request is expired, status:" + toState(getStatus())));
197 public boolean isGzip() {
202 * Get the response as RestfulResponse.
205 * @return response object.
206 * @throws IOException
209 public RestfulResponse getResponse() throws IOException {
210 final RestfulResponse rsp = new RestfulResponse();
211 rsp.setStatus(this.getResponseStatus());
213 final String responseString = decompressGzipToStr(getResponseContentBytes());
214 rsp.setResponseJson(responseString);
216 rsp.setResponseJson(this.getResponseContent());
219 final HttpFields field = this.getResponseFields();
221 final Map<String, String> header = new HashMap<>();
223 final Enumeration<String> names = field.getFieldNames();
224 for(final Enumeration<String> e = names; e.hasMoreElements();) {
225 final String fieldName = e.nextElement();
226 final String fieldValue = field.getStringField(fieldName);
227 header.put(fieldName, fieldValue);
230 rsp.setRespHeaderMap(header);