1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* Copyright 2016-2017 Huawei Technologies Co., Ltd.
*
* 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.
*/
package org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.common;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.apache.http.Header;
import org.apache.http.HeaderElement;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.service.constant.Constant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Utility class to download CSAR
*
* @author
* @version VFC 1.0 Sep 5, 2016
*/
public class DownloadCsarManager {
private static final Logger LOG = LoggerFactory.getLogger(DownloadCsarManager.class);
public static final int CACHE = 100 * 1024;
private DownloadCsarManager() {
// private constructor
}
/**
* Download from given URL.
*
* @param url String
* @return
*/
public static String download(String url) {
return download(url, null);
}
/**
* Download from given URL to given file location.
*
* @param url String
* @param filepath String
* @return
*/
public static String download(String url, String filepath) {
String status = "";
try (CloseableHttpClient client = HttpClients.createDefault()){
HttpGet httpget = new HttpGet(url);
CloseableHttpResponse response = client.execute(httpget);
HttpEntity entity = response.getEntity();
try(InputStream is = entity.getContent()) {
if(filepath == null) {
filepath = getFilePath(response); // NOSONAR
}
File file = new File(filepath);
file.getParentFile().mkdirs();
try(FileOutputStream fileout = new FileOutputStream(file)){
byte[] buffer = new byte[CACHE];
int ch;
while((ch = is.read(buffer)) != -1) {
fileout.write(buffer, 0, ch);
}
fileout.flush();
status = Constant.DOWNLOADCSAR_SUCCESS;
} catch(Exception e) {
status = Constant.DOWNLOADCSAR_FAIL;
LOG.error("Download csar file failed! " + e.getMessage(), e);
}
} catch(Exception e) {
status = Constant.DOWNLOADCSAR_FAIL;
LOG.error("Download csar file failed! " + e.getMessage(), e);
}
} catch(Exception e) {
status = Constant.DOWNLOADCSAR_FAIL;
LOG.error("Download csar file failed! " + e.getMessage(), e);
}
return status;
}
/**
* Retrieve file path from given response.
*
* @param response HttpResponse
* @return
*/
public static String getFilePath(HttpResponse response) {
String filepath = System.getProperty("java.home");
String filename = getFileName(response);
if(filename != null) {
filepath += filename;
} else {
filepath += getRandomFileName();
}
return filepath;
}
/**
* Retrieve file name from given response.
*
* @param response HttpResponse
* @return
*/
public static String getFileName(HttpResponse response) {
Header contentHeader = response.getFirstHeader("Content-Disposition");
String filename = null;
if(contentHeader != null) {
HeaderElement[] values = contentHeader.getElements();
if(values.length == 1) {
NameValuePair param = values[0].getParameterByName("filename");
if(param != null) {
try {
filename = param.getValue();
} catch(Exception e) {
LOG.error("getting filename failed! " + e.getMessage(), e);
}
}
}
}
return filename;
}
/**
* Provides random file name.
*
* @return
*/
public static String getRandomFileName() {
return String.valueOf(System.currentTimeMillis());
}
/**
* unzip CSAR packge
*
* @param fileName filePath
* @return
* @throws IOException
*/
public static int unzipCSAR(String fileName, String filePath) {
final int BUFFER = 2048;
int status = Constant.UNZIP_SUCCESS;
try(ZipFile zipFile = new ZipFile(fileName);) {
Enumeration emu = zipFile.entries();
while(emu.hasMoreElements()) {
ZipEntry entry = (ZipEntry)emu.nextElement();
// read directory as file first,so only need to create directory
if(entry.isDirectory()) {
new File(filePath + entry.getName()).mkdirs();
continue;
}
BufferedInputStream bis = new BufferedInputStream(zipFile.getInputStream(entry));
File file = new File(filePath + entry.getName());
// Because that is random to read zipfile,maybe the file is read first
// before the directory is read,so we need to create directory first.
File parent = file.getParentFile();
if(parent != null && (!parent.exists())) {
parent.mkdirs();
}
try(FileOutputStream fos = new FileOutputStream(file);
BufferedOutputStream bos = new BufferedOutputStream(fos, BUFFER);){
int count;
byte data[] = new byte[BUFFER];
while((count = bis.read(data, 0, BUFFER)) != -1) {
bos.write(data, 0, count);
}
bos.flush();
}
}
} catch(Exception e) {
status = Constant.UNZIP_FAIL;
LOG.error("Exception: " + e);
}
return status;
}
}
|
