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 boolean gzip = false;
53 private RestfulAsyncCallback callback = null;
61 * @param cacheFields whether to cache response header.
62 * @param asyncCallback callback method.
64 RestHttpContentExchange(final boolean cacheFields, final RestfulAsyncCallback asyncCallback) {
66 this.callback = asyncCallback;
73 * @param data GZipped data.
74 * @return Uncompressed data.
78 public String decompressGzipToStr(final byte[] data) throws IOException {
82 ByteArrayInputStream input = null;
83 GZIPInputStream gzis = null;
84 InputStreamReader reader = null;
85 final StringBuilder out = new StringBuilder();
87 input = new ByteArrayInputStream(data);
88 gzis = new GZIPInputStream(input);
89 reader = new InputStreamReader(gzis, Charset.forName(RestfulClientConst.ENCODING));
90 final char[] buff = new char[1024];
91 for(int n; (n = reader.read(buff)) != -1;) {
92 out.append(new String(buff, 0, n));
98 } catch(final IOException e) {
99 LOGGER.error("decompress Gzip reader exception:", e);
105 } catch(final IOException e) {
106 LOGGER.error("decompress Gzip exception:", e);
112 } catch(final IOException e) {
113 LOGGER.error("decompress Gzip input exception:", e);
117 return out.toString();
122 * View response headers Content-Encoding values if you need to extract data.<br/>
126 * @throws IOException
130 protected synchronized void onResponseHeader(final Buffer name, final Buffer value) throws IOException {
131 super.onResponseHeader(name, value);
132 final int header = HttpHeaders.CACHE.getOrdinal(name);
133 if(header == HttpHeaders.CONTENT_ENCODING_ORDINAL) {
134 final String encoding = StringUtil.asciiToLowerCase(value.toString());
135 gzip = encoding != null && StringUtils.contains(encoding, "gzip");
141 protected void onResponseComplete() throws IOException {
142 if(LOGGER.isInfoEnabled()) {
143 LOGGER.info("Response has Complete:" + "path:" + this.getRequestURI().replace("\n", "0x0A"));
145 super.onResponseComplete();
146 if(callback != null) {
147 final RestfulResponse rsp = getResponse();
148 callback.callback(rsp);
153 protected void onRequestCommitted() throws IOException {
154 if(LOGGER.isInfoEnabled()) {
155 LOGGER.info("Request Header has been send:" + "path:" + this.getRequestURI().replace("\n", "0x0A"));
157 super.onRequestCommitted();
161 protected void onRequestComplete() throws IOException {
162 if(LOGGER.isInfoEnabled()) {
163 LOGGER.info("Request has bend send complete:" + "path:" + this.getRequestURI().replace("\n", "0x0A"));
165 super.onRequestComplete();
169 protected void onException(final Throwable x) {
170 LOGGER.warn("onException:", x);
171 super.onException(x);
172 if(callback != null) {
173 callback.handleExcepion(x);
178 protected void onConnectionFailed(final Throwable x) {
179 LOGGER.warn("onConnectionFailed:", x);
180 super.onConnectionFailed(x);
181 if(callback != null) {
182 callback.handleExcepion(x);
188 protected void expire(final HttpDestination destination) {
189 super.expire(destination);
190 if(callback != null) {
191 callback.handleExcepion(new ServiceException("request is expired, status:" + toState(getStatus())));
195 public boolean isGzip() {
200 * Get the response as RestfulResponse.
203 * @return response object.
204 * @throws IOException
207 public RestfulResponse getResponse() throws IOException {
208 final RestfulResponse rsp = new RestfulResponse();
209 rsp.setStatus(this.getResponseStatus());
211 final String responseString = decompressGzipToStr(getResponseContentBytes());
212 rsp.setResponseJson(responseString);
214 rsp.setResponseJson(this.getResponseContent());
217 final HttpFields field = this.getResponseFields();
219 final Map<String, String> header = new HashMap<>();
221 final Enumeration<String> names = field.getFieldNames();
222 for(final Enumeration<String> e = names; e.hasMoreElements();) {
223 final String fieldName = e.nextElement();
224 final String fieldValue = field.getStringField(fieldName);
225 header.put(fieldName, fieldValue);
228 rsp.setRespHeaderMap(header);