1 | var fs = require('fs')
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2 | , test = require('tape')
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3 | , path = require('path')
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4 | , logRotate = require('../');
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5 |
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6 | function fileName() { return __dirname +"/test.log_"+ Date.now(); }
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7 | function getFiles(name, cb) {
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8 | fs.readdir(__dirname, function(err, files) {
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9 | if (err) return cb(err);
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10 | cb(null, files.filter(function(file) {
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11 | return file.indexOf(path.basename(name)) !== -1;
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12 | }));
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13 | });
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14 | }
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15 | function cleanup(name) {
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16 | getFiles(name, function(err, files) {
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17 | while (files.length) fs.unlinkSync(__dirname +"/"+ files.shift());
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18 | });
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19 | }
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20 |
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21 | function getSizes(name, cb) {
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22 | var sizes = []
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23 | , ct = 0;
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24 | function done(err) { if (! --ct) cb(err, sizes); }
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25 |
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26 | getFiles(name, function(err, files) {
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27 | ct = files.length;
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28 | files.forEach(function(file) {
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29 | fs.stat(__dirname +'/'+ file, function(err, st) {
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30 | sizes.push(st.size);
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31 | done(err);
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32 | });
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33 | });
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34 | });
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35 | }
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36 |
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37 | function writes(s, ct, cb) {
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38 | var done = ct || 100
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39 | , inv;
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40 |
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41 | if (cb) { s.on('finish', cb); }
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42 |
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43 | inv = setInterval(function() {
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44 | var chunk = Date.now() + "\n";
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45 | s.write(chunk);
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46 | if (! --done) {
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47 | clearInterval(inv);
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48 | s.end();
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49 | }
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50 | }, 1);
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51 | }
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52 |
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53 | test('rotates based on file size option', function(t) {
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54 | var files = []
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55 | , file = fileName();
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56 |
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57 | var s = logRotate({ file: file, size: 600 });
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58 |
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59 | s.on('rotated', function(file) {
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60 | files.push(file);
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61 | });
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62 |
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63 |
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64 | writes(s, 100, function() {
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65 | t.equals(files.length, 2, 'should have 2 files');
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66 | cleanup(file);
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67 | t.end();
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68 | });
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69 | });
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70 |
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71 | test('properly parses size units', function(t) {
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72 | var values = { '1024': 1024, '1k': 1024, '2k': 2048, '1MB': 1048576, '1g': 1073741824 };
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73 | Object.keys(values).forEach(function(k) {
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74 | var file = fileName()
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75 | , s = logRotate({ file: file, size: k });
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76 | s.on('ready', function() { cleanup(file); });
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77 | t.equals(s.size, values[k], 'should parse '+ k +' to '+ values[k]);
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78 | });
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79 | t.end();
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80 | });
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81 |
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82 | test('writes the correct number of bytes', function(t) {
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83 | var bytes = 0
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84 | , file = fileName();
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85 |
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86 | var s = logRotate({ file: file, keep: 4, size: 400 });
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87 |
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88 |
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89 | writes(s, 100, function() {
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90 | getSizes(file, function(err, sizes) {
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91 | var bytes = 0;
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92 | while (sizes.length) bytes += sizes.shift();
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93 | t.equals(bytes, 100*14, 'should have 2 files');
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94 | cleanup(file);
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95 | t.end();
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96 | });
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97 | });
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98 | });
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99 |
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100 | test('keeps the appropriate number of rotated logs', function(t) {
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101 | var file = fileName()
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102 | , s = logRotate({ file: file, size: 600, keep: 5 });
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103 |
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104 |
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105 | writes(s, 200, function() {
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106 | getFiles(file, function(err, files) {
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107 | t.equals(files.length, 5, 'should keep 5 files');
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108 | cleanup(file);
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109 | t.end();
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110 | });
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111 | });
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112 | });
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113 |
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114 | test('chunks large buffers', function(t) {
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115 | var file = fileName();
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116 | var s = logRotate({ file: file, keep: 32, size: '1k' });
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117 |
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118 | s.on('finish', function() {
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119 | getSizes(file, function(err, sizes) {
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120 | var bytes = 0, files = 0;
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121 | while (sizes.length) {
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122 | files++;
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123 | bytes += sizes.shift();
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124 | }
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125 |
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126 | t.equals(files, 32, 'should write 32 files');
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127 | t.equals(bytes, total_bytes, 'should write '+ total_bytes +' bytes');
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128 | cleanup(file);
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129 | t.end();
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130 | });
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131 | });
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132 |
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133 | var data = '';
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134 | for (var i = 0, l = 64; i < l; i++) {
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135 | data += new Array(512).join('1') + '\n';
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136 | }
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137 | var total_bytes = data.length;
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138 | s.write(data);
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139 | s.end();
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140 | });
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141 |
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142 | test('writes remaining data on finish', function(t) {
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143 | var file = fileName();
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144 | var s = logRotate({ file: file, keep: 1, size: '1k' });
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145 |
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146 | s.writer.on('finish', function() {
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147 | getSizes(file, function(err, sizes) {
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148 | t.equals(1, sizes.length, 'should write 1 file');
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149 | t.equals(14, sizes[0], 'should write 14 bytes');
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150 | cleanup(file);
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151 | t.end();
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152 | });
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153 | });
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154 |
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155 | s.write("foo\nbar");
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156 | s.end("foo\nbar");
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157 | });
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