| DNSLookupWebCacheItem.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.portlet.network.util;
24
25 import com.liferay.portal.kernel.util.Time;
26 import com.liferay.portal.kernel.webcache.WebCacheException;
27 import com.liferay.portal.kernel.webcache.WebCacheItem;
28 import com.liferay.portlet.network.model.DNSLookup;
29
30 import java.net.InetAddress;
31
32 /**
33 * <a href="DNSLookupWebCacheItem.java.html"><b><i>View Source</i></b></a>
34 *
35 * @author Brian Wing Shun Chan
36 */
37 public class DNSLookupWebCacheItem implements WebCacheItem {
38
39 public DNSLookupWebCacheItem(String domain) {
40 _domain = domain;
41 }
42
43 public Object convert(String key) throws WebCacheException {
44 DNSLookup dnsLookup = null;
45
46 try {
47 String results = null;
48
49 char[] array = _domain.trim().toCharArray();
50
51 for (int i = 0; i < array.length; i++) {
52 if ((array[i] != '.') && !Character.isDigit(array[i])) {
53 InetAddress ia = InetAddress.getByName(_domain);
54
55 results = ia.getHostAddress();
56
57 break;
58 }
59 }
60
61 if (results == null) {
62 StringBuilder sb = new StringBuilder();
63
64 InetAddress[] ia = InetAddress.getAllByName(_domain);
65
66 for (int i = 0; i < ia.length; i++) {
67 sb.append(ia[i].getHostName());
68
69 if (i + 1 <= ia.length) {
70 sb.append(",");
71 }
72 }
73
74 results = sb.toString();
75 }
76
77 dnsLookup = new DNSLookup(_domain, results);
78 }
79 catch (Exception e) {
80 throw new WebCacheException(_domain + " " + e.toString());
81 }
82
83 return dnsLookup;
84 }
85
86 public long getRefreshTime() {
87 return _REFRESH_TIME;
88 }
89
90 private static final long _REFRESH_TIME = Time.DAY;
91
92 private String _domain;
93
94 }