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
|
/*
* Combine multiple rrdFiles into one object
* It implements the same interface, but changing the content
*
* Part of the javascriptRRD package
* Copyright (c) 2010 Igor Sfiligoi, isfiligoi@ucsd.edu
*
* Original repository: http://javascriptrrd.sourceforge.net/
*
* MIT License [http://www.opensource.org/licenses/mit-license.php]
*
*/
// ============================================================
// RRD RRA handling class
function RRDRRASum(rra_list,offset_list,treat_undefined_as_zero) {
this.rra_list=rra_list;
this.offset_list=offset_list;
this.treat_undefined_as_zero=treat_undefined_as_zero;
this.row_cnt= this.rra_list[0].getNrRows();
}
RRDRRASum.prototype.getIdx = function() {
return this.rra_list[0].getIdx();
}
// Get number of rows/columns
RRDRRASum.prototype.getNrRows = function() {
return this.row_cnt;
}
RRDRRASum.prototype.getNrDSs = function() {
return this.rra_list[0].getNrDSs();
}
// Get RRA step (expressed in seconds)
RRDRRASum.prototype.getStep = function() {
return this.rra_list[0].getStep();
}
// Get consolidation function name
RRDRRASum.prototype.getCFName = function() {
return this.rra_list[0].getCFName();
}
RRDRRASum.prototype.getEl = function(row_idx,ds_idx) {
var outSum=0.0;
for (var i in this.rra_list) {
var offset=this.offset_list[i];
if ((row_idx+offset)<this.row_cnt) {
var rra=this.rra_list[i];
val=rra.getEl(row_idx+offset,ds_idx);
} else {
/* out of row range -> undefined*/
val=undefined;
}
/* treat all undefines as 0 for now */
if (val==undefined) {
if (this.treat_undefined_as_zero) {
val=0;
} else {
/* if even one element is undefined, the whole sum is undefined */
outSum=undefined;
break;
}
}
outSum+=val;
}
return outSum;
}
// Low precision version of getEl
// Uses getFastDoubleAt
RRDRRASum.prototype.getElFast = function(row_idx,ds_idx) {
var outSum=0.0;
for (var i in this.rra_list) {
var offset=this.offset_list[i];
if ((row_id+offset)<this.row_cnt) {
var rra=this.rra_list[i];
val=rra.getElFast(row_idx+offset,ds_idx);
} else {
/* out of row range -> undefined*/
val=undefined;
}
/* treat all undefines as 0 for now */
if (val==undefined) {
if (this.treat_undefined_as_zero) {
val=0;
} else {
/* if even one element is undefined, the whole sum is undefined */
outSum=undefined;
break;
}
}
outSum+=val;
}
return outSum;
}
/*** INTERNAL ** sort by lastupdate, descending ***/
function rrdFileSort(f1, f2) {
return f2.getLastUpdate()-f1.getLastUpdate();
}
/*
* Sum several RRDfiles together
* They must all have the same DSes and the same RRAs
*/
/*
* sumfile_options, if defined, must be an object containing any of these
* treat_undefined_as_zero
*
*/
// For backwards comatibility, if sumfile_options is a boolean,
// it is interpreted like the "old treat_undefined_as_zero" argument
function RRDFileSum(file_list,sumfile_options) {
if (sumfile_options==undefined) {
sumfile_options={};
} else if (typeof(sumfile_options)=="boolean") {
sumfile_options={treat_undefined_as_zero:sumfile_options};
}
this.sumfile_options=sumfile_options;
if (this.sumfile_options.treat_undefined_as_zero==undefined) {
this.treat_undefined_as_zero=true;
} else {
this.treat_undefined_as_zero=this.sumfile_options.treat_undefined_as_zero;
}
this.file_list=file_list;
this.file_list.sort();
// ===================================
// Start of user functions
this.getMinStep = function() {
return this.file_list[0].getMinStep();
}
this.getLastUpdate = function() {
return this.file_list[0].getLastUpdate();
}
this.getNrDSs = function() {
return this.file_list[0].getNrDSs();
}
this.getDSNames = function() {
return this.file_list[0].getDSNames();
}
this.getDS = function(id) {
return this.file_list[0].getDS(id);
}
this.getNrRRAs = function() {
return this.file_list[0].getNrRRAs();
}
this.getRRAInfo = function(idx) {
return this.file_list[0].getRRAInfo(idx);
}
this.getRRA = function(idx) {
var rra_info=this.getRRAInfo(idx);
var rra_step=rra_info.getStep();
var realLastUpdate=undefined;
var rra_list=new Array();
var offset_list=new Array();
for (var i in this.file_list) {
file=file_list[i];
fileLastUpdate=file.getLastUpdate();
if (realLastUpdate!=undefined) {
fileSkrew=Math.floor((realLastUpdate-fileLastUpdate)/rra_step);
} else {
fileSkrew=0;
firstLastUpdate=fileLastUpdate;
}
offset_list.push(fileSkrew);
fileRRA=file.getRRA(idx);
rra_list.push(fileRRA);
}
return new RRDRRASum(rra_list,offset_list,this.treat_undefined_as_zero);
}
}
|
