├── DEPENDENCIES
├── .gitignore
├── .travis.yml
├── NOTICE
├── README.md
├── pmd.xml
├── checkstyle.xml
├── LICENSE
├── src
├── test
│ └── java
│ │ └── org
│ │ └── fintx
│ │ └── util
│ │ └── UniqueIdTest.java
└── main
│ └── java
│ └── org
│ └── fintx
│ └── util
│ └── UniqueId.java
└── pom.xml
/DEPENDENCIES:
--------------------------------------------------------------------------------
1 | * intentionally left blank *
2 |
--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | *~
2 | #*
3 | *#
4 | .#*
5 | .classpath
6 | .project
7 | .settings/
8 | .springBeans
9 | target/
10 | bin/
11 | _site/
12 | .idea
13 | *.iml
14 | *.ipr
15 | *.iws
16 | .factorypath
17 | *.log
18 | .shelf
19 | *.swp
20 | *.swo
21 | /.checkstyle
22 |
--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
1 | language: java
2 |
3 | branches:
4 | only:
5 | - master
6 |
7 | jdk:
8 | - oraclejdk8
9 |
10 | env:
11 | global:
12 | - JAVA_OPTS="-Xmx2G"
13 | - MAVEN_OPTS="-Xmx2G"
14 |
15 | before_script:
16 | - echo $JAVA_OPTS
17 | - echo $MAVEN_OPTS
18 |
19 | script:
20 | - mvn test
21 |
22 | after_success:
23 | - mvn coveralls:report -Ptravis
--------------------------------------------------------------------------------
/NOTICE:
--------------------------------------------------------------------------------
1 | Copyright 2017 FinTx
2 |
3 | Licensed under the Apache License, Version 2.0 (the "License");
4 | you may not use this file except in compliance with the License.
5 | You may obtain a copy of the License at
6 |
7 | http://www.apache.org/licenses/LICENSE-2.0
8 |
9 | Unless required by applicable law or agreed to in writing, software
10 | distributed under the License is distributed on an "AS IS" BASIS,
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 | See the License for the specific language governing permissions and
13 | limitations under the License.
14 |
15 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | ## FinTx Identifier Generator
2 |
3 | [](https://maven-badges.herokuapp.com/maven-central/org.fintx/fintx-identifier/)
4 | [](https://github.com/fintx/fintx-identifier/releases)
5 | 
6 | [](https://gitter.im/fintx/fintx-identifier?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
7 | [](https://travis-ci.org/fintx/fintx-identifier)
8 | [](https://coveralls.io/github/fintx/fintx-identifier)
9 | [](https://www.versioneye.com/user/projects/598c0fa3368b0838815ce60c)
10 |
11 |
12 | # FinTx[1]
13 |
14 | ## What's is FinTx?
15 |
16 | FinTx is an open source group focus on financial technologies.
17 |
18 | ## What's is fintx-identifier
19 |
20 | fintx-identifier is for generating unique id in high performance and distribution environment. It extends the mongodb's ObjectId that using full MAC address to prevent the duplicated Id. It does not depend on the seeds like snowflake id generator. It can generate both 20 charachers base64 URL safe id (recommend) and 30 characters hex character id. Both id characters are in sequence that not random.
21 |
22 | ## Structure
23 |
24 |
Consists of 15 bytes, divided as follows:
25 |
26 |
UniqueId layout
27 |
28 |
0
1
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30 |
31 |
time
machine
pid
counter
32 |
33 |
34 |
35 | ## Limitations
36 | 1. ProcessId on os could not bigger then 65535 (the default max value in most linux OS).
37 | 2. Only in one bundle of same JVM when using OSGI.
38 | 3. Id requirement could not more then about 16777215 per second per JVM.
39 | 4. Maybe it will generate duplicated id every (2^32 - 1)/(60 * 60 * 24 * 365)≈136.19 years with same machine and same process(no possible).
40 |
41 | ## Using
42 | This is something that you get for free just by adding the following dependency inside your project:
43 |
44 | ```xml
45 |
46 | org.fintx
47 | fintx-identifer
48 | ${latest.version>
49 |
50 | ```
51 | ## Example
52 | 1. Get a 20 characters length unique id.
53 |
54 | ```java
55 | String id = UniqueId.get().toBase64String();
56 | ```
57 | 2. Parse id to get timestamp, machine identifier (physical MAC address), process identifier, counter number.
58 |
59 | ```java
60 | UniqueId uniqueId = UniqueId.fromBase64String(id);
61 | long timestamp = uniqueId.getTimestamp();
62 | long machineId = uniqueId.getMachineIdentifier();
63 | int processId = uniqueId.getProcessIdentifier();
64 | long counter = uniqueId.getCounter();
65 | ```
66 |
67 | [1] FinTx https://www.fintx.org/
68 | [2] Maven https://maven.apache.org/
69 |
--------------------------------------------------------------------------------
/pmd.xml:
--------------------------------------------------------------------------------
1 |
2 |
20 |
24 |
25 |
26 | From:https://maven.apache.org/plugins/maven-pmd-plugin/examples/usingRuleSets.html
27 | The default ruleset used by the Maven PMD Plugin, when no other ruleset is specified.
28 | It contains the rules of the old (pre PMD 6.0.0) rulesets java-basic, java-empty, java-imports,
29 | java-unnecessary, java-unusedcode.
30 |
31 | This ruleset might be used as a starting point for an own customized ruleset [0].
32 |
33 | [0] https://pmd.github.io/latest/pmd_userdocs_understanding_rulesets.html
34 |
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/checkstyle.xml:
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--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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/src/test/java/org/fintx/util/UniqueIdTest.java:
--------------------------------------------------------------------------------
1 | /**
2 | * Copyright 2017 FinTx
3 | *
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
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
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.
15 | */
16 | package org.fintx.util;
17 |
18 | import org.junit.Assert;
19 | import org.junit.Rule;
20 | import org.junit.Test;
21 | import org.junit.rules.ExpectedException;
22 |
23 | import java.lang.reflect.InvocationTargetException;
24 | import java.lang.reflect.Method;
25 | import java.util.ArrayList;
26 | import java.util.Date;
27 | import java.util.HashSet;
28 | import java.util.List;
29 | import java.util.Set;
30 | import java.util.UUID;
31 |
32 | /**
33 | * @author bluecreator(qiang.x.wang@gmail.com)
34 | *
35 | */
36 | public class UniqueIdTest {
37 | public int count = 2000000;
38 | public int threads = 4;
39 | public boolean error = false;
40 |
41 | @Rule
42 | public ExpectedException thrown = ExpectedException.none();
43 |
44 | @Test
45 | public void testSingleThread() {
46 | /*
47 | * use reflect to test unreachable methods try { Method getDate_long = UniqueId.class.getMethod("getDate", new Class[] { long.class });
48 | *
49 | * Date result =(Date) getDate_long.invoke(null, new Object[] { 123 }); } catch (IllegalAccessException | IllegalArgumentException |
50 | * InvocationTargetException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchMethodException e) { // TODO Auto-generated
51 | * catch block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); }
52 | */
53 | for (int i = 0; i < threads; i++) {
54 | doTest().clear();
55 | }
56 |
57 | }
58 |
59 | @Test
60 | public void testMultiThread() {
61 | Set totalSet = new HashSet(threads * count);
62 | List> list = new ArrayList>();
63 | for (int i = 0; i < threads; i++) {
64 | Thread t1 = new Thread(new Runnable() {
65 |
66 | @Override
67 | public void run() {
68 | try {
69 | Set set = doTest();
70 | synchronized (list) {
71 | list.add(set);
72 | }
73 | } catch (Throwable t) {
74 | t.printStackTrace();
75 | error = true;
76 | }
77 |
78 | }
79 |
80 | });
81 | t1.start();
82 | }
83 | System.err.println("");
84 | while ((list.size() != threads) && !error) {
85 | System.err.print(list.size());
86 | try {
87 | Thread.sleep(1000);
88 | } catch (InterruptedException e) {
89 | // TODO Auto-generated catch block
90 | e.printStackTrace();
91 | }
92 |
93 | }
94 | System.err.println(list.size());
95 | for (int i = 0; i < threads; i++) {
96 | totalSet.addAll(list.get(0));
97 | list.get(0).clear();
98 | list.remove(0);
99 | }
100 | Assert.assertTrue(totalSet.size() == threads * count);
101 | // System.err.println("The id number sum compare result:" + (set.size() == threads * count));
102 | }
103 |
104 | public Set doTest() {
105 | UniqueId uniqueId = UniqueId.get();
106 | String uniqueId20 = null;
107 | String uniqueId30 = null;
108 | // check length
109 | for (int i = 0; i < count; i++) {
110 | uniqueId20 = UniqueId.getString();
111 | Assert.assertTrue("not 20 character id:" + uniqueId20, 20 == uniqueId20.length());
112 | }
113 | for (int i = 0; i < count; i++) {
114 | uniqueId20 = UniqueId.get().toString();
115 | Assert.assertTrue("not 20 character id:" + uniqueId20, 20 == uniqueId20.length());
116 | }
117 | for (int i = 0; i < count; i++) {
118 | uniqueId20 = UniqueId.get().toBase64String();
119 | Assert.assertTrue("not 20 character id:" + uniqueId20, 20 == uniqueId20.length());
120 | }
121 | for (int i = 0; i < count; i++) {
122 | uniqueId30 = UniqueId.get().toHexString();
123 | Assert.assertTrue("not 30 character id:" + uniqueId30, 30 == uniqueId30.length());
124 | }
125 |
126 | // check performance
127 | long begin = System.currentTimeMillis();
128 | for (int i = 0; i < count; i++) {
129 | uniqueId20 = UniqueId.get().toBase64String();
130 | }
131 | long end = System.currentTimeMillis();
132 | System.out.println("Base64 ID generation total count:" + count + " total milliseconds:" + (end - begin) + " total seconds:" + (end - begin) / 1000);
133 | System.out.println("Base64 ID generation QPS:" + count * 1000L / ((end - begin)));
134 |
135 | // check encode decode safety
136 |
137 | for (int i = 0; i < count; i++) {
138 | UniqueId temp = null;
139 | temp = UniqueId.get();
140 | uniqueId30 = temp.toHexString();
141 | uniqueId20 = temp.toBase64String();
142 | Assert.assertFalse("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
143 | UniqueId.isValid(UUID.randomUUID().toString().substring(0, 30)));
144 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId20,
145 | UniqueId.isValid(UUID.randomUUID().toString().substring(0, 20)));
146 | Assert.assertFalse("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
147 | UniqueId.isValid(UUID.randomUUID().toString().toUpperCase().substring(0, 30)));
148 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId20,
149 | UniqueId.isValid(UUID.randomUUID().toString().toUpperCase().substring(0, 20)));
150 | Assert.assertFalse("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, UniqueId.isValid(UUID.randomUUID().toString()));
151 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, UniqueId.isValid(uniqueId30));
152 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, UniqueId.isValid(uniqueId20));
153 |
154 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, temp.equals(UniqueId.fromHexString(uniqueId30)));
155 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, temp.equals(UniqueId.fromBase64String(uniqueId20)));
156 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, temp.equals(UniqueId.fromByteArray(temp.toByteArray())));
157 |
158 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
159 | uniqueId30.equals(UniqueId.fromBase64String(uniqueId20).toHexString()));
160 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
161 | uniqueId30.equals(UniqueId.fromByteArray(temp.toByteArray()).toHexString()));
162 |
163 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
164 | uniqueId20.equals(UniqueId.fromHexString(uniqueId30).toBase64String()));
165 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
166 | uniqueId20.equals(UniqueId.fromByteArray(temp.toByteArray()).toBase64String()));
167 |
168 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
169 | UniqueId.fromHexString(uniqueId30).getTimestamp() == UniqueId.fromBase64String(uniqueId20).getTimestamp());
170 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
171 | UniqueId.getCurrentTimeStamp() >= UniqueId.fromBase64String(uniqueId20).getTimestamp());
172 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
173 | UniqueId.fromHexString(uniqueId30).getMachineIdentifier() == UniqueId.fromBase64String(uniqueId20).getMachineIdentifier());
174 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
175 | UniqueId.getGeneratedMachineIdentifier() == UniqueId.fromBase64String(uniqueId20).getMachineIdentifier());
176 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
177 | UniqueId.fromHexString(uniqueId30).getProcessIdentifier() == UniqueId.fromBase64String(uniqueId20).getProcessIdentifier());
178 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
179 | UniqueId.getGeneratedProcessIdentifier() == UniqueId.fromBase64String(uniqueId20).getProcessIdentifier());
180 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
181 | UniqueId.fromHexString(uniqueId30).getCounter() == UniqueId.fromBase64String(uniqueId20).getCounter());
182 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
183 | UniqueId.fromHexString(uniqueId30).getDate().getTime() == UniqueId.fromBase64String(uniqueId20).getDate().getTime());
184 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
185 | UniqueId.fromHexString(uniqueId30).equals(UniqueId.fromBase64String(uniqueId20)));
186 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
187 | UniqueId.fromHexString(uniqueId30).compareTo(UniqueId.fromBase64String(uniqueId20)) == 0);
188 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
189 | UniqueId.fromHexString(uniqueId30).toString().equals(UniqueId.fromBase64String(uniqueId20).toBase64String()));
190 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, temp.equals(temp));
191 | Assert.assertFalse("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, temp.equals(null));
192 | Assert.assertFalse("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30, temp.equals("1243543246"));
193 | Assert.assertTrue("Unsafe Base64 encode and decode, original id:" + i + " " + uniqueId30,
194 | UniqueId.fromHexString(uniqueId30).hashCode() == UniqueId.fromBase64String(uniqueId20).hashCode());
195 | UniqueId newTemp = UniqueId.get();
196 | Assert.assertFalse(UniqueId.fromHexString(uniqueId30).equals(newTemp));
197 | Assert.assertFalse(newTemp.equals(temp));
198 | Assert.assertTrue(newTemp.compareTo(temp) != 0);
199 | UniqueId.getCurrentCounter();
200 | UniqueId.getCurrentTimeStamp();
201 | UniqueId.getGeneratedMachineIdentifier();
202 | UniqueId.getGeneratedProcessIdentifier();
203 | }
204 | Assert.assertFalse(UniqueId.get().equals(uniqueId));
205 | Assert.assertTrue(UniqueId.get().compareTo(uniqueId) != 0);
206 | Set set = new HashSet(count);
207 | for (int i = 0; i < count; i++) {
208 |
209 | uniqueId20 = UniqueId.get().toBase64String();
210 | set.add(uniqueId20);
211 | }
212 | int size = set.size();
213 | // set.clear();
214 | Assert.assertTrue("Duplicated key found in originalId set." + uniqueId20, size == count);
215 |
216 | Assert.assertTrue(uniqueId.compareTo(UniqueId.get()) != 0);
217 | return set;
218 | }
219 |
220 | @Test
221 | public void testException1() {
222 | thrown.expect(IllegalArgumentException.class);
223 | thrown.expectMessage("Argument should not be null!");
224 | UniqueId.fromBase64String(null);
225 |
226 | }
227 |
228 | @Test
229 | public void testException2() {
230 | thrown.expect(IllegalArgumentException.class);
231 | thrown.expectMessage("Argument should not be null!");
232 | UniqueId.fromHexString(null);
233 |
234 | }
235 |
236 | @Test
237 | public void testException3() {
238 | thrown.expect(IllegalArgumentException.class);
239 | thrown.expectMessage("Argument should not be null!");
240 | UniqueId.fromByteArray(null);
241 |
242 | }
243 |
244 | @Test
245 | public void testException4() {
246 | thrown.expect(IllegalArgumentException.class);
247 | thrown.expectMessage("invalid hexadecimal representation of an UniqueId");
248 | UniqueId.fromBase64String(UUID.randomUUID().toString());
249 |
250 | }
251 |
252 | @Test
253 | public void testException5() {
254 | thrown.expect(IllegalArgumentException.class);
255 | thrown.expectMessage("invalid hexadecimal representation of an UniqueId");
256 | UniqueId.fromHexString(UUID.randomUUID().toString());
257 |
258 | }
259 |
260 | @Test
261 | public void testException6() {
262 | thrown.expect(IllegalArgumentException.class);
263 | thrown.expectMessage("Argument need 15 bytes");
264 | UniqueId.fromByteArray(UUID.randomUUID().toString().getBytes());
265 |
266 | }
267 |
268 | @Test
269 | public void testException7() {
270 | thrown.expect(NullPointerException.class);
271 | UniqueId.get().compareTo(null);
272 | }
273 |
274 | }
275 |
--------------------------------------------------------------------------------
/pom.xml:
--------------------------------------------------------------------------------
1 |
4 | 4.0.0
5 | org.fintx
6 | fintx-identifier
7 | 0.4.0.0-SNAPSHOT
8 | fintx-identifier
9 | Distributed unique id generator base on ObjectId that understandable.
10 | www.fintx.org
11 |
12 | FinTx
13 | www.fintx.org
14 |
15 |
16 |
17 | Apache License, Version 2.0
18 | http://www.apache.org/licenses/LICENSE-2.0
19 |
20 |
21 |
22 |
23 | bluecreator
24 | Qiang Wang
25 | qiang.x.wang at gmail.com
26 | FinTx
27 | www.fintx.org
28 |
29 | Project lead
30 |
31 |
32 |
33 |
34 | https://github.com/fintx/fintx-identifier
35 | scm:https://github.com/fintx/fintx-identifier.git
36 | fintx-identifier
37 |
38 |
39 | 1.8
40 |
41 | UTF-8
42 | UTF-8
43 | ${java.version}
44 | ${java.version}
45 |
46 |
47 |
48 | junit
49 | junit
50 | test
51 | 4.12
52 |
53 |
54 |
55 | ${project.artifactId}
56 |
57 |
58 | src/main/java
59 |
60 | **
61 |
62 | false
63 |
64 |
65 | src/main/resources/
66 |
67 | **
68 |
69 | true
70 |
71 |
72 |
73 |
74 | org.apache.maven.plugins
75 | maven-source-plugin
76 | 3.0.1
77 |
78 |
79 | attach-sources
80 |
81 | jar-no-fork
82 |
83 |
84 |
85 |
86 |
87 | org.apache.maven.plugins
88 | maven-javadoc-plugin
89 | 3.0.0
90 |
91 |
92 | attach-javadocs
93 |
94 | jar
95 |
96 |
97 |
98 |
99 |
100 | org.apache.maven.plugins
101 | maven-compiler-plugin
102 | 3.7.0
103 |
104 | ${java.version}
105 | ${java.version}
106 | UTF-8
107 |
108 |
109 |
110 | org.apache.maven.plugins
111 | maven-resources-plugin
112 | 3.0.1
113 |
114 | UTF-8
115 |
116 |
117 | pem
118 | pfx
119 | p12
120 |
121 |
122 |
123 |
124 | org.apache.maven.plugins
125 | maven-surefire-plugin
126 | 2.21.0
127 |
128 |
129 | -Xmx4096M ${argLine}
130 |
131 | **/*Tests.java
132 | **/*Test.java
133 |
134 |
135 | **/Abstract*.java
136 |
137 |
138 |
139 |
140 | org.apache.maven.plugins
141 | maven-dependency-plugin
142 | 3.1.1
143 |
144 |
145 | copy
146 | package
147 |
148 | tree
149 | analyze-only
150 |
151 |
152 |
157 |
158 |
159 |
160 |
161 |
162 |
163 | org.owasp
164 | dependency-check-maven
165 | 3.2.1
166 |
167 |
168 |
169 | check
170 |
171 |
172 |
173 |
174 | true
175 |
177 | 3
178 | true
179 |
180 |
181 |
182 | org.apache.maven.plugins
183 | maven-enforcer-plugin
184 | 3.0.0-M1
185 |
186 |
187 | org.codehaus.mojo
188 | extra-enforcer-rules
189 | 1.0-beta-9
190 |
191 |
192 |
193 |
194 | enforce-check
195 | package
196 |
197 | enforce
198 | display-info
199 |
200 |
201 |
202 |
203 | false
204 |
205 |
206 | [3.0.3,)
207 |
208 |
209 | 1.8
210 |
211 |
212 | true
213 |
214 | junit:junit
215 | commons-logging:commons-logging
216 | log4j:log4j
217 | org.slf4j:slf4j-log4j12
218 | org.slf4j:slf4j-log4j13
219 |
220 | ch.qos.logback:*
221 | org.springframework:*:[,5.0.0.RELEASE]:jar
222 | commons-beanutils:commons-beanutils:[,1.8.3]:jar
223 |
224 |
225 | junit:junit:*:jar:test
226 | org.apache.logging.log4j:log4j-core:[2.10.0,]
227 | org.apache.logging.log4j:log4j-slf4j-impl:[2.10.0,]
228 |
229 | Use log4j2 and spring above 5.0.0
230 |
231 |
232 |
233 | print("[INFO] [Enforcer Rules] ");1==1
234 |
235 |
236 |
237 | true
238 |
239 | junit.*
240 | org.junit.*
241 | org.hamcrest.*
242 | org.w3c.dom.*
243 | javax.xml.*
244 | javax.annotation.*
245 | javax.activation.*
246 | org.aspectj.*
247 | com.sun.tools.attach.*
248 | com.sun.activation.*
249 | com.sun.istack.*
250 | sun.tools.attach.*
251 | org.aopalliance.*
252 | org.apache.hadoop.yarn.*
253 | org.apache.commons.beanutils.*
254 | org.apache.xmlbeans.xml.stream.*
255 | org.xml.sax.*
256 | io.netty.*
257 |
258 | [ERROR] [Enforcer Rules] find DuplicateClasses
259 |
260 |
261 |
262 |
263 |
264 | UTF-8
265 | src/main/resources/**,src/test/resources/**
266 |
267 |
268 |
269 |
270 |
271 | org.jacoco
272 | jacoco-maven-plugin
273 | 0.8.1
274 |
275 |
276 | agent-for-ut
277 |
278 | prepare-agent
279 |
280 |
281 |
282 | agent-for-it
283 |
284 | prepare-agent-integration
285 |
286 |
287 |
288 | jacoco-site
289 | verify
290 |
291 | report
292 |
293 |
294 |
295 | default-check
296 |
297 | check
298 |
299 |
300 |
301 |
302 |
303 |
304 | BUNDLE
305 |
306 |
307 |
308 |
309 | COMPLEXITY
310 | COVEREDRATIO
311 | 0.60
312 |
313 |
314 |
315 |
316 |
317 |
318 |
319 |
320 |
321 | com.github.hazendaz.spotbugs
322 | spotbugs-maven-plugin
323 |
324 | 3.0.6
325 |
326 |
327 |
328 | check
329 |
330 |
331 |
332 |
333 |
334 |
335 | com.mebigfatguy.fb-contrib
336 | fb-contrib
337 | 7.4.3.sb
338 |
339 |
340 | ${project.build.sourceEncoding}
341 | java
342 | true
343 | true
344 | ${java.version}
345 | false
346 | true
347 |
348 |
349 |
350 | org.apache.maven.plugins
351 | maven-pmd-plugin
352 | 3.10.0
353 |
354 |
355 | commons-beanutils
356 | commons-beanutils
357 | 1.9.3
358 |
359 |
360 | org.dom4j
361 | dom4j
362 | 2.1.1
363 |
364 |
365 |
366 |
367 |
368 | check
369 | cpd-check
370 |
371 |
372 |
373 |
374 | ${project.build.sourceEncoding}
375 | java
376 | true
377 | true
378 |
379 | pmd.xml
380 |
381 | ${java.version}
382 | false
383 | true
384 |
385 |
386 |
387 | org.apache.maven.plugins
388 | maven-checkstyle-plugin
389 | 3.0.0
390 |
391 |
392 |
393 | check
394 |
395 |
396 |
397 |
398 | checkstyle.xml
399 | UTF-8
400 | true
401 | true
402 | true
403 | false
404 | true
405 |
406 |
407 |
408 | org.apache.maven.plugins
409 | maven-jdeps-plugin
410 |
411 | 3.1.1
412 |
413 |
414 | process-classes
415 |
416 |
417 |
418 |
419 |
420 |
421 | org.apache.maven.plugins
422 | maven-site-plugin
423 | 3.6
424 |
425 |
426 | org.apache.maven.doxia
427 | doxia-site-renderer
428 | 1.8.1
429 |
430 |
431 | commons-beanutils
432 | commons-beanutils
433 | 1.9.3
434 |
435 |
436 | org.dom4j
437 | dom4j
438 | 2.1.1
439 |
440 |
441 |
442 |
443 |
444 |
445 |
446 |
447 | org.apache.maven.plugins
448 | maven-project-info-reports-plugin
449 | 3.0.0
450 |
451 |
452 | org.apache.maven.plugins
453 | maven-javadoc-plugin
454 |
455 |
456 | org.apache.maven.plugins
457 | maven-surefire-report-plugin
458 |
459 |
460 | org.codehaus.mojo
461 | jdepend-maven-plugin
462 | 2.0
463 |
464 |
465 | org.apache.maven.plugins
466 | maven-checkstyle-plugin
467 |
468 |
469 |
470 | checkstyle
471 |
472 |
473 |
474 |
475 | checkstyle.xml
476 |
477 |
478 |
479 |
480 |
481 | org.apache.maven.plugins
482 | maven-pmd-plugin
483 |
484 | ${project.build.sourceEncoding}
485 | java
486 | true
487 |
488 | pmd.xml
489 |
490 | ${java.version}
491 |
492 |
493 |
494 | com.github.hazendaz.spotbugs
495 | spotbugs-maven-plugin
496 |
497 |
498 |
499 | com.mebigfatguy.fb-contrib
500 | fb-contrib
501 | 7.4.3.sb
502 |
503 |
504 |
505 |
506 |
507 | org.apache.maven.plugins
508 | maven-jxr-plugin
509 |
510 |
512 |
513 | org.jacoco
514 | jacoco-maven-plugin
515 |
516 |
517 |
518 |
519 |
520 |
521 |
522 | report
523 |
524 |
525 |
526 |
527 |
528 | org.apache.maven.plugins
529 | maven-jdeps-plugin
530 |
531 |
532 | org.apache.maven.plugins
533 | maven-dependency-plugin
534 | 3.1.1
535 |
536 |
537 |
538 | analyze-report
539 |
540 |
541 |
542 |
543 |
544 |
545 | org.owasp
546 | dependency-check-maven
547 |
548 |
549 |
550 |
551 | aggregate
552 |
553 |
554 |
555 |
556 | Dependency Security Check report
557 |
558 |
559 |
560 | org.codehaus.mojo
561 | versions-maven-plugin
562 |
563 |
564 |
565 | dependency-updates-report
566 | plugin-updates-report
567 | property-updates-report
568 |
569 |
570 |
571 |
572 |
573 |
574 |
575 |
576 | release
577 |
578 |
579 | ossrh
580 | https://oss.sonatype.org/service/local/staging/deploy/maven2/
581 |
582 |
583 |
584 |
585 |
586 |
587 | org.sonatype.plugins
588 | nexus-staging-maven-plugin
589 | 1.6.8
590 | true
591 |
592 | ossrh
593 | https://oss.sonatype.org/
594 | true
595 |
596 |
597 |
598 | org.apache.maven.plugins
599 | maven-gpg-plugin
600 | 1.6
601 |
602 |
603 | sign-artifacts
604 | verify
605 |
606 | sign
607 |
608 |
609 |
610 |
611 |
612 |
613 |
614 | false
615 |
616 |
617 |
618 | snapshot
619 |
620 |
621 | ossrh
622 | https://oss.sonatype.org/content/repositories/snapshots
623 |
624 |
625 |
626 | true
627 |
628 |
629 |
630 | travis
631 |
632 |
633 | env.TRAVIS
634 | true
635 |
636 |
637 |
638 |
639 |
640 | org.eluder.coveralls
641 | coveralls-maven-plugin
642 | 4.3.0
643 |
644 | r2OVdrdgoAv6MZsk0k3hLkuZF1vsZO0tk
645 |
646 | /target/site/jacoco/jacoco.xml
647 |
648 |
649 |
650 |
651 |
652 |
653 |
654 |
655 |
656 |
657 |
--------------------------------------------------------------------------------
/src/main/java/org/fintx/util/UniqueId.java:
--------------------------------------------------------------------------------
1 | /**
2 | * Copyright 2017 FinTx
3 | *
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
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
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.
15 | */
16 |
17 | package org.fintx.util;
18 |
19 | import java.io.Serializable;
20 | import java.net.NetworkInterface;
21 | import java.security.SecureRandom;
22 | import java.util.Arrays;
23 | import java.util.Base64;
24 | import java.util.Date;
25 | import java.util.Enumeration;
26 | import java.util.concurrent.atomic.AtomicInteger;
27 | import java.util.concurrent.atomic.AtomicLong;
28 |
29 | /**
30 | *
31 | * A globally unique identifier for objects.
32 | *
33 | *
34 | *
35 | * Consists of 15 bytes, divided as follows:
36 | *
37 | *
38 | *
UniqueId layout
39 | *
40 | *
0
41 | *
1
42 | *
2
43 | *
3
44 | *
4
45 | *
5
46 | *
6
47 | *
7
48 | *
8
49 | *
9
50 | *
10
51 | *
11
52 | *
12
53 | *
13
54 | *
14
55 | *
56 | *
57 | *
time
58 | *
machine
59 | *
pid
60 | *
counter
61 | *
62 | *
63 | *
64 | *
65 | * Instances of this class are immutable.
66 | *
67 | *
68 | * Limitations:
69 | *
70 | *
71 | * ProcessId on os could not bigger then 65535. Only in one bundle of same JVM when using OSGI. Generated id number could not more then about 16777215 per
72 | * second per JVM. Id maybe (hardly) generate the same one every 69 years.
73 | *
74 | *
75 | */
76 | //TODO 1检查long int 溢出的问题
77 | //TODO 2timestamp是否可以进一步缩短（考虑base64问题移动6bit(2^6=64)省一个字符，重复的时间缩短到1年多（69/64=?））
78 | public final class UniqueId implements Comparable, Serializable {
79 |
80 | private static final long serialVersionUID = 3670079982654483072L;
81 |
82 | private static final int LOW_ORDER_THREE_BYTES = 0x00ffffff;
83 |
84 | private static final long MACHINE_IDENTIFIER;
85 |
86 | private static final short PROCESS_IDENTIFIER;
87 |
88 | private static final AtomicInteger NEXT_COUNTER = new AtomicInteger(new SecureRandom().nextInt());
89 | // to prevent time change back maybe when use time server to correct the machine time.
90 | private static final AtomicLong LAST_TIMESTAMP = new AtomicLong(0);
91 |
92 | private static final char[] HEX_CHARS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
93 |
94 | private final int timestamp;
95 |
96 | private final long machineIdentifier;
97 |
98 | private final short processIdentifier;
99 |
100 | private final int counter;
101 |
102 | /**
103 | * Gets a new object id.
104 | *
105 | * @return the new UniqueId instance
106 | */
107 | public static UniqueId get() {
108 | return new UniqueId(dateToTimestampSeconds(new Date()), MACHINE_IDENTIFIER, PROCESS_IDENTIFIER, NEXT_COUNTER.getAndIncrement(), false);
109 | }
110 |
111 | /**
112 | * Gets a new object id.
113 | *
114 | * @return the new Unique Id String
115 | */
116 | public static String getString() {
117 | return get().toString();
118 | }
119 |
120 | /**
121 | * Checks if a string could be an {@code UniqueId}.
122 | *
123 | * @param idString hexString (base16) or base64String, a potential UniqueId as a String.
124 | * @return whether the string could be an object id
125 | * @throws IllegalArgumentException if hexString is null
126 | */
127 | public static boolean isValid(final String idString) {
128 | if (idString == null) {
129 | throw new IllegalArgumentException("Argument should not be null!");
130 | }
131 |
132 | int len = idString.length();
133 | if (len == 30) {
134 | for (int i = 0; i < len; i++) {
135 | char c = idString.charAt(i);
136 | if (c >= '0' && c <= '9') {
137 | continue;
138 | } else if (c >= 'a' && c <= 'f') {
139 | continue;
140 | } else if (c >= 'A' && c <= 'F') {
141 | continue;
142 | } else {
143 | return false;
144 | }
145 | }
146 | return true;
147 | } else if (len == 20) {
148 | for (int i = 0; i < len; i++) {
149 | char c = idString.charAt(i);
150 | if (c >= '0' && c <= '9') {
151 | continue;
152 | } else if (c >= 'a' && c <= 'z') {
153 | continue;
154 | } else if (c >= 'A' && c <= 'Z') {
155 | continue;
156 | } else if (c == '_' || c == '-') {
157 | continue;
158 | } else {
159 | return false;
160 | }
161 | }
162 | return true;
163 | } else {
164 | return false;
165 | }
166 |
167 | }
168 |
169 | /**
170 | * Gets the generated machine identifier.
171 | *
172 | * @return an int representing the machine identifier
173 | */
174 | public static long getGeneratedMachineIdentifier() {
175 | return MACHINE_IDENTIFIER;
176 | }
177 |
178 | /**
179 | * Gets the generated process identifier.
180 | *
181 | * @return the process id
182 | */
183 | public static int getGeneratedProcessIdentifier() {
184 | return PROCESS_IDENTIFIER;
185 | }
186 |
187 | /**
188 | * Gets the current value of the auto-incrementing counter.
189 | *
190 | * @return the current counter value.
191 | */
192 | public static int getCurrentCounter() {
193 | return NEXT_COUNTER.get();
194 | }
195 |
196 | /**
197 | * Gets the current value of the auto-incrementing counter.
198 | *
199 | * @return the current counter value.
200 | */
201 | public static long getCurrentTimeStamp() {
202 | return LAST_TIMESTAMP.get() & 0xffffffffL;
203 | }
204 |
205 | /**
206 | * Constructs a new instance from the timestamp
207 | *
208 | * @param timestamp of second
209 | * @param machineIdentifier the machine identifier
210 | * @param processIdentifier the process identifier
211 | * @param counter the counter in this jvm
212 | * @param checkCounter whether or not need check counter
213 | */
214 | private UniqueId(final int timestamp, final long machineIdentifier, final short processIdentifier, final int counter, final boolean checkCounter) {
215 | long current = LAST_TIMESTAMP.get();
216 |
217 | if ((timestamp & 0xffffffffL) == (current & 0xffffffffL)) {
218 | // @formatter:off
219 | // mostly
220 | // @formatter:on
221 |
222 | this.timestamp = timestamp;
223 | this.counter = counter & LOW_ORDER_THREE_BYTES;
224 |
225 | } else if ((timestamp & 0xffffffffL) > (current & 0xffffffffL)) {
226 | // @formatter:off
227 | // once per second or less
228 | // @formatter:on
229 | synchronized (UniqueId.class) {
230 | current = LAST_TIMESTAMP.get();
231 | if ((timestamp & 0xffffffffL) > (current & 0xffffffffL)) {
232 | LAST_TIMESTAMP.set(timestamp & 0xffffffffL);
233 | this.timestamp = timestamp;
234 | this.counter = counter & LOW_ORDER_THREE_BYTES;
235 | } else if ((timestamp & 0xffffffffL) == (current & 0xffffffffL)) {
236 | this.timestamp = timestamp;
237 | this.counter = counter & LOW_ORDER_THREE_BYTES;
238 | } else if ((current & 0xffffffffL) - (timestamp & 0xffffffffL) == 1L) {
239 | this.timestamp = (int) current;
240 | this.counter = counter & LOW_ORDER_THREE_BYTES;
241 | } else {
242 | this.timestamp = (int) current;
243 | this.counter = NEXT_COUNTER.getAndIncrement() & LOW_ORDER_THREE_BYTES;
244 | }
245 | }
246 | } else {
247 | // @formatter:off
248 | //((timestamp & 0xffffffffL) < (current & 0xffffffffL))
249 | // hardly
250 | // @formatter:on
251 | synchronized (UniqueId.class) {
252 | current = LAST_TIMESTAMP.get();
253 | if ((current & 0xffffffffL) - (timestamp & 0xffffffffL) == 1L) {
254 | // @formatter:off
255 | // LAST_TIMESTAMP increased after timestamp generated
256 | // @formatter:on
257 |
258 | } else if (((LAST_TIMESTAMP.get() & 0xffffffffL) - (timestamp & 0xffffffffL)) >= 0x7fffffffL) {
259 | // timestamp is in the new round of zero to 0xffffffffL. 0x7fffffffL is half of 0xffffffffL.
260 | // A round is about 69 years, so the gap between last timestamp in the last round and new timestamp in this round will not less then 34
261 | // years.
262 | LAST_TIMESTAMP.set(timestamp & 0xffffffffL);
263 | } else {
264 | // System.err.println(((LAST_TIMESTAMP.get() & 0xffffffffL) - (timestamp & 0xffffffffL)));
265 | // System.err.println(timestamp);
266 | // System.err.println(current);
267 | // System.err.println(LAST_TIMESTAMP.get());
268 | throw new IllegalArgumentException(
269 | "The timestamp must not be less then the timestamp last time. (Maybe the machine correct time using time server).");
270 | }
271 | }
272 | this.counter = counter & LOW_ORDER_THREE_BYTES;
273 | this.timestamp = timestamp;
274 | }
275 | if (((machineIdentifier >> 32) & 0xff000000) != 0) {
276 | throw new IllegalArgumentException("The machine identifier must be between 0 and 28139015110655 (it must fit in six bytes).");
277 | }
278 | if (checkCounter && ((counter & 0xff000000) != 0)) {
279 | throw new IllegalArgumentException("The counter must be between 0 and 16777215 (it must fit in three bytes).");
280 | }
281 | this.machineIdentifier = machineIdentifier;
282 | this.processIdentifier = processIdentifier;
283 | }
284 |
285 | /**
286 | * Constructs a new instance from a 15 byte array.
287 | *
288 | * @param bytes the byte array
289 | * @return new UniqueId instance
290 | */
291 | public static UniqueId fromByteArray(final byte[] bytes) {
292 | return new UniqueId(bytes);
293 | }
294 |
295 | /**
296 | * Constructs a new instance from a 60-byte hexadecimal (base16 encoding) string representation.
297 | *
298 | * @param hexString the string to convert
299 | * @return new UniqueId instance
300 | */
301 | public static UniqueId fromHexString(final String hexString) {
302 | return new UniqueId(parseHexString(hexString));
303 | }
304 |
305 | /**
306 | * Constructs a new instance from a 40-byte base64 encoding string representation.
307 | *
308 | * @param base64String the string to convert
309 | * @return new UniqueId instance
310 | */
311 | public static UniqueId fromBase64String(final String base64String) {
312 | return new UniqueId(parseBase64String(base64String));
313 | }
314 |
315 | /**
316 | * Constructs a new instance from the given byte array
317 | *
318 | * @param bytes the byte array
319 | */
320 | private UniqueId(final byte[] bytes) {
321 | if (bytes == null) {
322 | throw new IllegalArgumentException("Argument should not be null!");
323 | }
324 | if (bytes.length != 15) {
325 | throw new IllegalArgumentException("Argument need 15 bytes");
326 | }
327 | timestamp = bytes2int(Arrays.copyOfRange(bytes, 0, 4));
328 | machineIdentifier = bytes2long(Arrays.copyOfRange(bytes, 4, 10));
329 | processIdentifier = (short) bytes2int(Arrays.copyOfRange(bytes, 10, 12));
330 | counter = bytes2int(Arrays.copyOfRange(bytes, 12, 15));
331 | }
332 |
333 | /**
334 | * Convert to a byte array.
335 | *
336 | * @return the byte array
337 | */
338 | public byte[] toByteArray() {
339 | byte[] bytes = new byte[15];
340 | byte[] temp = int2bytes(timestamp);
341 | bytes[0] = temp[0];
342 | bytes[1] = temp[1];
343 | bytes[2] = temp[2];
344 | bytes[3] = temp[3];
345 | temp = long2bytes(machineIdentifier);
346 | bytes[4] = temp[2];
347 | bytes[5] = temp[3];
348 | bytes[6] = temp[4];
349 | bytes[7] = temp[5];
350 | bytes[8] = temp[6];
351 | bytes[9] = temp[7];
352 | temp = int2bytes(processIdentifier);
353 | bytes[10] = temp[2];
354 | bytes[11] = temp[3];
355 | temp = int2bytes(counter);
356 | bytes[12] = temp[1];
357 | bytes[13] = temp[2];
358 | bytes[14] = temp[3];
359 | return bytes;
360 | }
361 |
362 | /**
363 | * Gets the timestamp (number of seconds since the Unix epoch).
364 | *
365 | * @return the timestamp of second
366 | */
367 | public long getTimestamp() {
368 | // To unsigned int
369 | return timestamp & 0xffffffffL;
370 | }
371 |
372 | /**
373 | * Gets the machine identifier (physical MAC address).
374 | *
375 | * @return the machine identifier
376 | */
377 | public long getMachineIdentifier() {
378 | return machineIdentifier;
379 | }
380 |
381 | /**
382 | * Gets the process identifier.
383 | *
384 | * @return the process identifier
385 | */
386 | public int getProcessIdentifier() {
387 | return processIdentifier & 0x0000ffff;
388 | }
389 |
390 | /**
391 | * Gets the counter.
392 | *
393 | * @return the counter
394 | */
395 | public int getCounter() {
396 | return counter;
397 | }
398 |
399 | /**
400 | * Gets the timestamp as a {@code Date} instance.
401 | *
402 | * @return the Date
403 | */
404 | public Date getDate() {
405 | return getDate(new Date().getTime());
406 | }
407 |
408 | /**
409 | * Gets the timestamp as a {@code Date} instance.
410 | *
411 | * @param now the timestamp in millisecond
412 | * @return the Date
413 | */
414 | private Date getDate(long now) {
415 |
416 | if ((timestamp & 0xffffffffL) <= (now / 1000L % 0xffffffffL)) {
417 | // @formatter:off
418 | // Timestamp is in this round of scope.
419 | // @formatter:on
420 | return new Date((((now / 1000L / 0xffffffffL) * 0xffffffffL + (timestamp & 0xffffffffL)) + now / 1000L / 0xffffffffL) * 1000L);
421 |
422 | } else if (((timestamp & 0xffffffffL) + now / 1000L / 0xffffffffL) - (now / 1000L % 0xffffffffL) >= 0x7fffffffL) {
423 | // @formatter:off
424 | // Timestamp is in last round of zero to 0xffffffffL scope.
425 | //"+ now / 1000L / 0xffffffffL" is to fix the beginning second (should be 1 but 0) every round starting from second round (the beginning is the first round)
426 | // @formatter:on
427 | return new Date((((now / 1000L / 0xffffffffL) - 1) * 0xffffffffL + (timestamp & 0xffffffffL) + (now / 1000L / 0xffffffffL) - 1) * 1000L);
428 |
429 | } else {
430 | // @formatter:off
431 | // Timestamp is in this round of zero to 0xffffffffL scope but bigger then now
432 | // @formatter:on
433 | throw new IllegalArgumentException("The timestamp must not be less then the timestamp now. (Maybe the machine correct time using time server).");
434 | }
435 |
436 | }
437 |
438 | /**
439 | * Converts this instance into a 60-byte hexadecimal string representation.
440 | *
441 | * @return a string representation of the UniqueId in hexadecimal format
442 | */
443 | public String toHexString() {
444 | return toHexString(toByteArray());
445 | }
446 |
447 | /**
448 | * Converts byte array into a hexadecimal string representation.
449 | *
450 | * @param bytes the byte array
451 | * @return a string
452 | */
453 | private static String toHexString(byte[] bytes) {
454 | char[] chars = new char[bytes.length * 2];
455 | int i = 0;
456 | for (byte b : bytes) {
457 | chars[i++] = HEX_CHARS[b >> 4 & 0xf];
458 | chars[i++] = HEX_CHARS[b & 0xf];
459 | }
460 | return new String(chars);
461 | }
462 |
463 | /**
464 | * Converts this instance into a 40-byte base64 string representation.
465 | *
466 | * @return a string representation of the UniqueId in base64 format
467 | */
468 | public String toBase64String() {
469 | return Base64.getUrlEncoder().encodeToString(toByteArray());
470 | }
471 |
472 | @Override
473 | public boolean equals(final Object o) {
474 | if (this == o) {
475 | return true;
476 | }
477 | if (o == null || getClass() != o.getClass()) {
478 | return false;
479 | }
480 |
481 | UniqueId uniqueId = (UniqueId) o;
482 |
483 | if (counter != uniqueId.counter) {
484 | return false;
485 | }
486 | if (machineIdentifier != uniqueId.machineIdentifier) {
487 | return false;
488 | }
489 | if (processIdentifier != uniqueId.processIdentifier) {
490 | return false;
491 | }
492 | if (timestamp != uniqueId.timestamp) {
493 | return false;
494 | }
495 |
496 | return true;
497 | }
498 |
499 | @Override
500 | public int hashCode() {
501 | int result = timestamp;
502 | result = 31 * result + (int) machineIdentifier;
503 | result = 31 * result + (int) processIdentifier;
504 | result = 31 * result + counter;
505 | return result;
506 | }
507 |
508 | @Override
509 | public int compareTo(final UniqueId other) {
510 | if (other == null) {
511 | throw new NullPointerException();
512 | }
513 |
514 | byte[] byteArray = toByteArray();
515 | byte[] otherByteArray = other.toByteArray();
516 | for (int i = 0; i < 15; i++) {
517 | if (byteArray[i] != otherByteArray[i]) {
518 | return ((byteArray[i] & 0xff) < (otherByteArray[i] & 0xff)) ? -1 : 1;
519 | }
520 | }
521 | return 0;
522 | }
523 |
524 | @Override
525 | public String toString() {
526 | return toBase64String();
527 | }
528 |
529 | static {
530 | MACHINE_IDENTIFIER = createMachineIdentifier();
531 | PROCESS_IDENTIFIER = createProcessIdentifier();
532 | }
533 |
534 | /**
535 | * Creates the machine identifier from the physical MAC address.
536 | *
537 | * @return long the machine identifier
538 | */
539 | private static long createMachineIdentifier() {
540 | byte[] mac = null;
541 | try {
542 | Enumeration e = NetworkInterface.getNetworkInterfaces();
543 | while (e.hasMoreElements()) {
544 | NetworkInterface ni = e.nextElement();
545 | if (!ni.isLoopback()) {
546 | mac = ni.getHardwareAddress();
547 | }
548 | // ?? mac[1] != (byte) 0xff it is from http://johannburkard.de/software/uuid/
549 | if (mac != null && mac.length == 6 && mac[1] != (byte) 0xff) {
550 | break;
551 | } else {
552 | continue;
553 | }
554 | }
555 | } catch (Throwable t) {
556 | throw new RuntimeException("Could not get MAC address", t);
557 | }
558 | if (mac != null && mac.length == 6 && mac[1] != (byte) 0xff) {
559 | return bytes2long(mac);
560 | } else {
561 | if (null == mac) {
562 | throw new RuntimeException("Could not get MAC address!");
563 | } else {
564 | throw new RuntimeException("MAC address is not correct:" + toHexString(mac));
565 | }
566 | }
567 |
568 | }
569 |
570 | /**
571 | * Creates the process identifier.
572 | *
573 | * @return short the process identifer
574 | */
575 | private static short createProcessIdentifier() {
576 | short processId;
577 | try {
578 | String processName = java.lang.management.ManagementFactory.getRuntimeMXBean().getName();
579 | if (processName.contains("@")) {
580 | processId = (short) Integer.parseInt(processName.substring(0, processName.indexOf('@')));
581 | } else {
582 | throw new Throwable("Process name:'" + processName + "' is invalid!");
583 | }
584 |
585 | } catch (Throwable t) {
586 | throw new RuntimeException(t);
587 | }
588 |
589 | return processId;
590 | }
591 |
592 | /**
593 | * Parse the hexadecimal string (base16 encoding) to byte array.
594 | *
595 | * @param s the hexadecimal string
596 | * @return
597 | */
598 | private static byte[] parseHexString(final String s) {
599 | if (!isValid(s)) {
600 | throw new IllegalArgumentException("invalid hexadecimal representation of an UniqueId: [" + s + "]");
601 | }
602 |
603 | byte[] b = new byte[15];
604 | for (int i = 0; i < b.length; i++) {
605 | b[i] = (byte) Integer.parseInt(s.substring(i * 2, i * 2 + 2), 16);
606 | }
607 | return b;
608 | }
609 |
610 | /**
611 | * Parse the base64 String to byte array.
612 | *
613 | * @param s the base64 string
614 | */
615 | private static byte[] parseBase64String(final String s) {
616 | if (!isValid(s)) {
617 | throw new IllegalArgumentException("invalid hexadecimal representation of an UniqueId: [" + s + "]");
618 | }
619 |
620 | return Base64.getUrlDecoder().decode(s);
621 | }
622 |
623 | private static int dateToTimestampSeconds(final Date time) {
624 | return (int) ((time.getTime() / 1000L) & 0xffffffffL);
625 | }
626 |
627 | private static byte[] int2bytes(final int num) {
628 | byte[] bytes = new byte[4];
629 | for (int ix = 0; ix < 4; ++ix) {
630 | int offset = 32 - (ix + 1) * 8;
631 | bytes[ix] = (byte) ((num >> offset) & 0xff);
632 | }
633 | return bytes;
634 | }
635 |
636 | private static int bytes2int(final byte[] bytes) {
637 | if (bytes.length > 4) {
638 | throw new RuntimeException("byteNum is too long for a int type:" + bytes.length);
639 | }
640 | int num = 0;
641 | for (int ix = 0; ix < bytes.length; ++ix) {
642 | num <<= 8;
643 | num |= (bytes[ix] & 0xff);
644 | }
645 | return num;
646 | }
647 |
648 | private static byte[] long2bytes(final long num) {
649 | byte[] bytes = new byte[8];
650 | for (int ix = 0; ix < 8; ++ix) {
651 | int offset = 64 - (ix + 1) * 8;
652 | bytes[ix] = (byte) ((num >> offset) & 0xff);
653 | }
654 | return bytes;
655 | }
656 |
657 | private static long bytes2long(final byte[] bytes) {
658 | if (bytes.length > 8) {
659 | throw new RuntimeException("byteNum is too long for a long type:" + bytes.length);
660 | }
661 | long num = 0;
662 | for (int ix = 0; ix < bytes.length; ++ix) {
663 | num <<= 8;
664 | num |= (bytes[ix] & 0xff); // byte become 64bit since the index 1 with higher bit 1? & 0xff make higher bit 0
665 | }
666 | return num;
667 | }
668 |
669 | // public static void main(String[] args) {
670 | // //Full test!!!!
671 | // UniqueId uniqueId = null;
672 | // for (long lo = new Date().getTime(); lo > 0 && lo < Long.MAX_VALUE; lo += 100) {
673 | // uniqueId =
674 | // new UniqueId(dateToTimestampSeconds(new Date(lo)), MACHINE_IDENTIFIER, PROCESS_IDENTIFIER,
675 | // NEXT_COUNTER.getAndIncrement(), false);
676 | // if (!uniqueId.getDate(lo).toString().equals(new Date(lo / 1000L * 1000L).toString())) {
677 | // System.err.println("XXXXXXXXXXXXXXXXXXXXXXXXXXLo:" + lo);
678 | // System.err.println(uniqueId.getDate(lo).toString());
679 | // System.err.println(new Date(lo / 1000L * 1000L).toString());
680 | // throw new RuntimeException();
681 | // }
682 | // if (lo / 100 % 1000000 == 0) {
683 | // System.err.println(lo);
684 | // System.err.println(uniqueId.getDate(lo).toString());
685 | // }
686 | // }
687 |
688 | // //Function test!!!!!!
689 | // System.err.println("-------------------------------1");
690 | // long l = 12345678901223322L;
691 | // System.err.println(Long.toBinaryString(l));
692 | // byte[] bytes = long2bytes(l);
693 | // l = bytes2long(bytes);
694 | // System.err.println(Long.toBinaryString(l));
695 | // int i = 1500617485;
696 | // System.err.println(Integer.toBinaryString(i));
697 | // bytes = int2bytes(i);
698 | // l = bytes2int(bytes);
699 | // System.err.println(Long.toBinaryString(i));
700 |
701 | // //Extreme condition test!!!!!!!
702 | // System.err.println("-------------------------------2");
703 | // UniqueId uid = new UniqueId(dateToTimestampSeconds(new Date((Integer.MAX_VALUE - 1) * 1000L)),
704 | // MACHINE_IDENTIFIER, PROCESS_IDENTIFIER,
705 | // NEXT_COUNTER.getAndIncrement(), false);
706 | // System.err.println(uid.getDate((Integer.MAX_VALUE - 1) * 1000L).toString());
707 | // System.err.println(uid.getTimestamp());
708 | // System.err.println(new Date((Integer.MAX_VALUE - 1) * 1000L).toString());
709 | // System.err.println("-------------------------------3");
710 | // uid = new UniqueId(dateToTimestampSeconds(new Date(Integer.MAX_VALUE * 1000L)), MACHINE_IDENTIFIER,
711 | // PROCESS_IDENTIFIER,
712 | // NEXT_COUNTER.getAndIncrement(), false);
713 | // System.err.println(uid.getDate(Integer.MAX_VALUE * 1000L).toString());
714 | // System.err.println(uid.getTimestamp());
715 | // System.err.println(new Date(Integer.MAX_VALUE * 1000L).toString());
716 | // System.err.println("-------------------------------4");
717 | // uid = new UniqueId(dateToTimestampSeconds(new Date((Integer.MAX_VALUE + 1L) * 1000L)), MACHINE_IDENTIFIER,
718 | // PROCESS_IDENTIFIER,
719 | // NEXT_COUNTER.getAndIncrement(), false);
720 | // System.err.println((Integer.MAX_VALUE + 1L) * 1000L);
721 | // System.err.println(uid.getDate((Integer.MAX_VALUE + 1L) * 1000L).toString());
722 | // System.err.println(uid.getTimestamp());
723 | // System.err.println(new Date((Integer.MAX_VALUE + 1L) * 1000L).toString());
724 | // System.err.println("-------------------------------5");
725 | // uid = new UniqueId(dateToTimestampSeconds(new Date((Integer.MAX_VALUE + 2L) * 1000L)), MACHINE_IDENTIFIER,
726 | // PROCESS_IDENTIFIER,
727 | // NEXT_COUNTER.getAndIncrement(), false);
728 | // System.err.println((Integer.MAX_VALUE + 2L) * 1000L);
729 | // System.err.println(uid.getDate((Integer.MAX_VALUE + 2L) * 1000L).toString());
730 | // System.err.println(uid.getTimestamp());
731 | // System.err.println(new Date((Integer.MAX_VALUE + 2L) * 1000L).toString());
732 | // System.err.println("-------------------------------6");
733 | // System.err.println((new Date(0xfffffffeL * 1000L).getTime() / 1000L) & 0xffffffffL);
734 | // System.err.println(dateToTimestampSeconds(new Date(0xfffffffeL * 1000L)));
735 | // System.err.println(Long.toBinaryString(dateToTimestampSeconds(new Date(0xfffffffeL * 1000L))));
736 | // System.err.println(Integer.toBinaryString((int) dateToTimestampSeconds(new Date(0xfffffffeL * 1000L))));
737 | // uid = new UniqueId(dateToTimestampSeconds(new Date(0xfffffffeL * 1000L)), MACHINE_IDENTIFIER,
738 | // PROCESS_IDENTIFIER,
739 | // NEXT_COUNTER.getAndIncrement(), false);
740 | // System.err.println(uid.getDate(0xfffffffeL * 1000L).toString());
741 | // System.err.println(uid.getTimestamp());
742 | // System.err.println(new Date(0xfffffffeL * 1000L).toString());
743 | // System.err.println("-------------------------------7");
744 | // System.err.println((new Date(0xfffffffeL * 1000L).getTime() / 1000L) & 0xffffffffL);
745 | // System.err.println(dateToTimestampSeconds(new Date(0xffffffffL * 1000L)));
746 | // System.err.println(Long.toBinaryString(dateToTimestampSeconds(new Date(0xffffffffL * 1000L))));
747 | // System.err.println(Integer.toBinaryString((int) dateToTimestampSeconds(new Date(0xffffffffL * 1000L))));
748 | // uid = new UniqueId(dateToTimestampSeconds(new Date(0xffffffffL * 1000L)), MACHINE_IDENTIFIER,
749 | // PROCESS_IDENTIFIER,
750 | // NEXT_COUNTER.getAndIncrement(), false);
751 | // System.err.println(uid.getDate(0xffffffffL * 1000L).toString());
752 | // System.err.println(uid.getTimestamp());
753 | // System.err.println(new Date(0xffffffffL * 1000L).toString());
754 | // System.err.println("-------------------------------8");
755 | // uid = new UniqueId(dateToTimestampSeconds(new Date(0xffffffffL * 1000L)), MACHINE_IDENTIFIER,
756 | // PROCESS_IDENTIFIER,
757 | // NEXT_COUNTER.getAndIncrement(), false);
758 | // System.err.println(uid.getDate(0x100000000L * 1000L).toString());
759 | // System.err.println(uid.getDate(0x100000001L * 1000L).toString());
760 | // System.err.println(uid.getTimestamp());
761 | // System.err.println(new Date(0xffffffffL * 1000L).toString());
762 | // System.err.println("-------------------------------9");
763 | // uid = new UniqueId(dateToTimestampSeconds(new Date(0x100000000L * 1000L)), MACHINE_IDENTIFIER,
764 | // PROCESS_IDENTIFIER,
765 | // NEXT_COUNTER.getAndIncrement(), false);
766 | // System.err.println(0x100000000L * 1000L);
767 | // System.err.println(uid.getDate(0x100000000L * 1000L).toString());
768 | // System.err.println(uid.getTimestamp());
769 | // System.err.println(new Date(0x100000000L * 1000L).getTime());
770 | // System.err.println(new Date(0x100000000L * 1000L).toString());
771 | // System.err.println("-------------------------------a");
772 | // uid = new UniqueId(dateToTimestampSeconds(new Date(0x100000001L * 1000L)), MACHINE_IDENTIFIER,
773 | // PROCESS_IDENTIFIER,
774 | // NEXT_COUNTER.getAndIncrement(), false);
775 | // System.err.println(0x100000001L * 1000L);
776 | // System.err.println(uid.getDate(0x100000001L * 1000L).toString());
777 | // System.err.println(uid.getTimestamp());
778 | // System.err.println(new Date(0x100000001L * 1000L).getTime());
779 | // System.err.println(new Date(0x100000001L * 1000L).toString());
780 | // System.err.println("-------------------------------b");
781 | // uid = new UniqueId(dateToTimestampSeconds(new Date(0x1fffffff1L * 1000L)), MACHINE_IDENTIFIER,
782 | // PROCESS_IDENTIFIER,
783 | // NEXT_COUNTER.getAndIncrement(), false);
784 | // System.err.println(0x100000001L * 1000L);
785 | // System.err.println(uid.getDate(0x200000000L * 1000L).toString());
786 | // System.err.println(uid.getTimestamp());
787 | // System.err.println(new Date(0x1fffffff1L * 1000L).toString());
788 | // System.err.println(new Date(0x200000000L * 1000L).toString());
789 | // }
790 | }
791 |
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