-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
Format.java
218 lines (187 loc) · 5.9 KB
/
Format.java
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
211
212
213
214
215
216
217
218
/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.helpers;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import java.util.concurrent.TimeUnit;
import org.neo4j.io.ByteUnit;
public class Format
{
/**
* Default time zone is UTC (+00:00) so that comparing timestamped logs from different
* sources is an easier task.
*/
public static final TimeZone DEFAULT_TIME_ZONE = TimeZone.getTimeZone( "UTC" );
public static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss.SSSZ";
public static final String TIME_FORMAT = "HH:mm:ss.SSS";
private static final String[] BYTE_SIZES = { "B", "kB", "MB", "GB" };
private static final ThreadLocalFormat DATE = new ThreadLocalFormat( DATE_FORMAT );
private static final ThreadLocalFormat TIME = new ThreadLocalFormat( TIME_FORMAT );
private static int KB = (int) ByteUnit.kibiBytes( 1 );
public static String date()
{
return date( DEFAULT_TIME_ZONE );
}
public static String date( TimeZone timeZone )
{
return date( new Date(), timeZone );
}
public static String date( long millis )
{
return date( millis, DEFAULT_TIME_ZONE );
}
public static String date( long millis, TimeZone timeZone )
{
return date( new Date( millis ), timeZone );
}
public static String date( Date date )
{
return date( date, DEFAULT_TIME_ZONE );
}
public static String date( Date date, TimeZone timeZone )
{
return DATE.format( date, timeZone );
}
public static String time()
{
return time( DEFAULT_TIME_ZONE );
}
public static String time( TimeZone timeZone )
{
return time( new Date() );
}
public static String time( long millis )
{
return time( millis, DEFAULT_TIME_ZONE );
}
public static String time( long millis, TimeZone timeZone )
{
return time( new Date( millis ), timeZone );
}
public static String time( Date date )
{
return time( date, DEFAULT_TIME_ZONE );
}
public static String time( Date date, TimeZone timeZone )
{
return TIME.format( date, timeZone );
}
public static String bytes( long bytes )
{
double size = bytes;
for ( String suffix : BYTE_SIZES )
{
if ( size < KB )
{
return String.format( "%.2f %s", Double.valueOf( size ), suffix );
}
size /= KB;
}
return String.format( "%.2f TB", Double.valueOf( size ) );
}
public static String duration( long durationMillis )
{
return duration( durationMillis, TimeUnit.DAYS, TimeUnit.MILLISECONDS );
}
public static String duration( long durationMillis, TimeUnit highestGranularity, TimeUnit lowestGranularity )
{
StringBuilder builder = new StringBuilder();
TimeUnit[] units = TimeUnit.values();
reverse( units );
boolean use = false;
for ( TimeUnit unit : units )
{
if ( unit.equals( highestGranularity ) )
{
use = true;
}
if ( use )
{
durationMillis = extractFromDuration( durationMillis, unit, builder );
if ( unit.equals( lowestGranularity ) )
{
break;
}
}
}
return builder.toString();
}
private static <T> void reverse( T[] array )
{
int half = array.length >> 1;
for ( int i = 0; i < half; i++ )
{
T temp = array[i];
int highIndex = array.length - 1 - i;
array[i] = array[highIndex];
array[highIndex] = temp;
}
}
private static String shortName( TimeUnit unit )
{
switch ( unit )
{
case NANOSECONDS: return "ns";
case MICROSECONDS: return "μs";
case MILLISECONDS: return "ms";
default: return unit.name().substring( 0, 1 ).toLowerCase();
}
}
private static long extractFromDuration( long durationMillis, TimeUnit unit, StringBuilder target )
{
int count = 0;
long millisPerUnit = unit.toMillis( 1 );
while ( durationMillis >= millisPerUnit )
{
count++;
durationMillis -= millisPerUnit;
}
if ( count > 0 )
{
target.append( target.length() > 0 ? " " : "" ).append( count ).append( shortName( unit ) );
}
return durationMillis;
}
private Format()
{
// No instances
}
private static class ThreadLocalFormat extends ThreadLocal<DateFormat>
{
private final String format;
ThreadLocalFormat( String format )
{
this.format = format;
}
String format( Date date, TimeZone timeZone )
{
DateFormat dateFormat = get();
dateFormat.setTimeZone( timeZone );
return dateFormat.format( date );
}
@Override
protected DateFormat initialValue()
{
return new SimpleDateFormat( format );
}
}
}