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annotate src/implab/log/trace.js @ 24:f750c89976d3

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Added trace tools, implab/log/trace!<channel-name>, <channel-name> is optional
author cin
date Thu, 07 Dec 2017 19:19:29 +0300
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24
f750c89976d3 Added trace tools, implab/log/trace!<channel-name>, <channel-name> is optional
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1 define(["../text/format"], function (format) {
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2 'use strict';
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3
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4 var listeners = [];
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5 var channels = {};
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6
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7 var Trace = function (name) {
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8 this.name = name;
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9 this._subscribers = [];
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10 };
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11
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12 Trace.prototype.debug = function () {
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13 if (Trace.level >= 4)
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14 this.notify("debug", format.apply(null, arguments));
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15 };
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16
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17 Trace.prototype.log = function () {
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18 if (Trace.level >= 3)
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19 this.notify("log", format.apply(null, arguments));
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20 };
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21
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22 Trace.prototype.warn = function () {
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23 if (Trace.level >= 2)
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24 this.notify("warn", format.apply(null, arguments));
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25
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26 };
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27
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28 Trace.prototype.error = function () {
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29 if (Trace.level >= 1)
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30 this.notify("error", format.apply(null, arguments));
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31 };
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32
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33 Trace.prototype.notify = function (name, msg) {
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34 var me = this;
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35 me._subscribers.forEach(function (cb) {
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36 cb(me, name, msg);
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37 });
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38 };
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39
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40 Trace.prototype.subscribe = function (cb) {
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41 this._subscribers.push(cb);
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42 };
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43
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44 Trace.prototype.toString = function () {
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45 return this.name;
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46 };
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47
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48 Trace.createChannel = function (type, name, cb) {
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49 var chId = name;
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50 if (channels[chId])
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51 return channels[chId];
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52
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53 var channel = new type(chId);
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54 channels[chId] = channel;
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55
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56 Trace._onNewChannel(chId, channel);
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57 cb(channel);
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58 };
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59
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60 Trace._onNewChannel = function (chId, ch) {
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61 listeners.forEach(function (listener) {
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62 listener(chId, ch);
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63 });
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64 };
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65
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66 Trace.on = function (filter, cb) {
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67 if (arguments.length == 1) {
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68 cb = filter;
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69 filter = undefined;
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70 }
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71 var d, test;
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72 if (filter instanceof RegExp) {
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73 test = function (chId) {
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74 return filter.test(chId);
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75 };
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76 } else if (filter instanceof Function) {
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77 test = filter;
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78 } else if (filter) {
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79 test = function (chId) {
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80 return chId == filter;
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81 };
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82 }
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83
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84 if (test) {
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85 d = function(chId, ch) {
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86 if(test(chId))
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87 ch.subscribe(cb);
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88 };
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89 } else {
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90 d = function(chId, ch) {
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91 ch.subscribe(cb);
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92 };
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93 }
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94 listeners.push(d);
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95
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96 for(var chId in channels)
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97 d(chId,channels[chId]);
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98 };
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99
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100 Trace.load = function (id, require, cb) {
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101 if (id)
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102 Trace.createChannel(Trace, id, cb);
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103 else if (require.module && require.module.mid)
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104 Trace.createChannel(Trace, require.module.mid, cb);
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105 else
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106 require(['module'], function (module) {
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107 Trace.createChannel(Trace, module && module.id, cb);
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108 });
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109 };
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110
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111 Trace.dynamic = true;
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112
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113 Trace.level = 4;
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114
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115 return Trace;
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116 });