Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
MsDecor |
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1 | /** | |
2 | * Copyright (c) 2012-2015, jcabi.com | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: 1) Redistributions of source code must retain the above | |
8 | * copyright notice, this list of conditions and the following | |
9 | * disclaimer. 2) Redistributions in binary form must reproduce the above | |
10 | * copyright notice, this list of conditions and the following | |
11 | * disclaimer in the documentation and/or other materials provided | |
12 | * with the distribution. 3) Neither the name of the jcabi.com nor | |
13 | * the names of its contributors may be used to endorse or promote | |
14 | * products derived from this software without specific prior written | |
15 | * permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT | |
19 | * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
20 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
22 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
26 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
28 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 | */ | |
30 | package com.jcabi.log; | |
31 | ||
32 | import java.util.Formattable; | |
33 | import java.util.FormattableFlags; | |
34 | import java.util.Formatter; | |
35 | import lombok.EqualsAndHashCode; | |
36 | import lombok.ToString; | |
37 | ||
38 | /** | |
39 | * Decorate time interval in milliseconds. | |
40 | * | |
41 | * <p>For example: | |
42 | * | |
43 | * <pre> | |
44 | * final long start = System.currentTimeMillis(); | |
45 | * // some operations | |
46 | * Logger.debug("completed in %[ms]s", System.currentTimeMillis() - start); | |
47 | * </pre> | |
48 | * | |
49 | * @author Yegor Bugayenko (yegor@teamed.io) | |
50 | * @version $Id: 0ba7757213228d4c1ae4cc44f8338ae18346a588 $ | |
51 | * @since 0.1 | |
52 | */ | |
53 | 0 | @ToString |
54 | 0 | @EqualsAndHashCode(of = "millis") |
55 | final class MsDecor implements Formattable { | |
56 | ||
57 | /** | |
58 | * The period to work with, in milliseconds. | |
59 | */ | |
60 | private final transient Double millis; | |
61 | ||
62 | /** | |
63 | * Public ctor. | |
64 | * @param msec The interval in milliseconds | |
65 | */ | |
66 | @SuppressWarnings("PMD.NullAssignment") | |
67 | 0 | MsDecor(final Long msec) { |
68 | 0 | if (msec == null) { |
69 | 0 | this.millis = null; |
70 | } else { | |
71 | 0 | this.millis = Double.valueOf(msec); |
72 | } | |
73 | 0 | } |
74 | ||
75 | /** | |
76 | * {@inheritDoc} | |
77 | * @checkstyle ParameterNumber (4 lines) | |
78 | */ | |
79 | @Override | |
80 | public void formatTo(final Formatter formatter, final int flags, | |
81 | final int width, final int precision) { | |
82 | 0 | if (this.millis == null) { |
83 | 0 | formatter.format("NULL"); |
84 | } else { | |
85 | 0 | final StringBuilder format = new StringBuilder(0); |
86 | 0 | format.append('%'); |
87 | 0 | if ((flags & FormattableFlags.LEFT_JUSTIFY) == FormattableFlags |
88 | .LEFT_JUSTIFY) { | |
89 | 0 | format.append('-'); |
90 | } | |
91 | 0 | if (width > 0) { |
92 | 0 | format.append(Integer.toString(width)); |
93 | } | |
94 | 0 | if ((flags & FormattableFlags.UPPERCASE) == FormattableFlags |
95 | .UPPERCASE) { | |
96 | 0 | format.append('S'); |
97 | } else { | |
98 | 0 | format.append('s'); |
99 | } | |
100 | 0 | formatter.format(format.toString(), this.toText(precision)); |
101 | } | |
102 | 0 | } |
103 | ||
104 | /** | |
105 | * Create text. | |
106 | * @param precision The precision | |
107 | * @return The text | |
108 | * @checkstyle MagicNumber (50 lines) | |
109 | */ | |
110 | private String toText(final int precision) { | |
111 | double number; | |
112 | String title; | |
113 | 0 | if (this.millis < 1000L) { |
114 | 0 | number = this.millis; |
115 | 0 | title = "ms"; |
116 | 0 | } else if (this.millis < 1000L * 60) { |
117 | 0 | number = this.millis / 1000L; |
118 | 0 | title = "s"; |
119 | 0 | } else if (this.millis < 1000L * 60 * 60) { |
120 | 0 | number = this.millis / (1000L * 60); |
121 | 0 | title = "min"; |
122 | 0 | } else if (this.millis < 1000L * 60 * 60 * 24) { |
123 | 0 | number = this.millis / (1000L * 60 * 60); |
124 | 0 | title = "hr"; |
125 | 0 | } else if (this.millis < 1000L * 60 * 60 * 24 * 30) { |
126 | 0 | number = this.millis / (1000L * 60 * 60 * 24); |
127 | 0 | title = "days"; |
128 | } else { | |
129 | 0 | number = this.millis / (1000L * 60 * 60 * 24 * 30); |
130 | 0 | title = "mon"; |
131 | } | |
132 | final String format; | |
133 | 0 | if (precision >= 0) { |
134 | 0 | format = String.format("%%.%df%%s", precision); |
135 | } else { | |
136 | 0 | format = "%.0f%s"; |
137 | } | |
138 | 0 | return String.format(format, number, title); |
139 | } | |
140 | ||
141 | } |