author | Tero Marttila <terom@paivola.fi> |
Sun, 10 Feb 2013 13:20:29 +0200 | |
changeset 205 | f7658198c224 |
parent 156 | 999ae3e9fdec |
child 232 | 5894c70dc6a8 |
permissions | -rw-r--r-- |
149 | 1 |
from pvl.rrd import api as rrd |
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import time |
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from pvl.invoke import merge # XXX |
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import logging; log = logging.getLogger('pvl.rrd.graph') |
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""" |
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RRDTool graph builders. |
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Includes support for Smokeping-inspired interface graphs from MRTG/Collectd. |
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""" |
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def timestamp () : |
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return time.strftime("%Y/%m/%d %H:%M:%S %Z") |
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class Graph (object) : |
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""" |
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Render an RRD graph from definitions/options. |
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Acts as a semi-magical object, with immutable state, and methods that return updated copies of our state. |
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>>> Graph() |
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Graph() |
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>>> Graph('foo') |
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Graph('foo') |
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>>> Graph(bar='bar') |
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Graph(bar='bar') |
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>>> Graph('foo', bar='bar') |
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Graph('foo', bar='bar') |
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>>> Graph('foo')(bar='bar') |
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Graph('foo', bar='bar') |
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""" |
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def __init__ (self, *defs, **opts) : |
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self.defs = defs |
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self.opts = opts |
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def __call__ (self, *defs, **opts) : |
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return type(self)(*(self.defs + defs), **merge(self.opts, opts)) |
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def __getitem__ (self, key) : |
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return self.opts[key] |
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def graph (self, out) : |
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""" |
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Render completed graph using pvl.rrd.api.graph() |
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""" |
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return rrd.graph(out, *self.defs, **self.opts) |
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def __repr__ (self) : |
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return "{type}({args})".format( |
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type = self.__class__.__name__, |
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args = ', '.join([repr(def_) for def_ in self.defs] + [str(opt) + '=' + repr(value) for opt, value in self.opts.iteritems()]), |
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) |
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# builders |
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class Interface (Graph) : |
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""" |
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An RRD graph showing in/out traffic in bits/s on an interface, with style/interval support. |
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""" |
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@classmethod |
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def build (cls, title, rrd, style, interval) : |
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""" |
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Return a simple Graph using the given title, RRD and style/interval |
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title - common(title=...) |
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rrd - data(rrd=...) |
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style - style(style=...) |
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interval - interval(interval=...) |
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""" |
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return cls().common(title).source(rrd).style(style).interval(interval) |
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# builders |
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def common (self, title) : |
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""" |
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Common options for all views |
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""" |
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return self( |
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# output |
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imgformat = "PNG", |
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# lazy = True, |
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color = [ |
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# disable border |
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# border = 0, |
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"SHADEA#ffffff00", |
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"SHADEB#ffffff00", |
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# keep background transparent |
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"BACK#ffffff00", |
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"SHADEB#ffffff00", |
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], |
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# labels |
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vertical_label = "bits/s", |
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title = title, |
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units = "si", |
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103 |
|
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# use logarithmic scaling? |
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# logarithmic = True, |
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106 |
|
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# smooth out lines |
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slope_mode = True, |
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109 |
) |
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110 |
|
155
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111 |
## data |
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# DS names; in/out bytes |
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IN = OUT = None |
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114 |
|
155
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115 |
def source (self, rrd) : |
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116 |
""" |
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Abstract: rrd -> in/out |
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118 |
""" |
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119 |
|
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if not (self.IN and self.OUT) : |
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raise TypeError("No IN/OUT DS names for %s" % (self, )) |
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122 |
|
156
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log.debug("%s", rrd) |
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124 |
|
155
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return self( |
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# data sources, bytes/s |
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r'DEF:in0={rrd}:{ds_in}:AVERAGE'.format(rrd=rrd, ds_in=self.IN), |
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r'DEF:out0={rrd}:{ds_out}:AVERAGE'.format(rrd=rrd, ds_out=self.OUT), |
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129 |
|
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# data, bits/s |
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'CDEF:in=in0,8,*', |
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132 |
'CDEF:out=out0,8,*', |
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133 |
) |
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134 |
|
155
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135 |
## style |
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136 |
def style_overview (graph) : |
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137 |
""" |
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in/out bps -> overview graph |
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139 |
""" |
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140 |
|
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141 |
return graph( |
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"CDEF:all=in,out,+", |
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143 |
|
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"VDEF:max=all,MAXIMUM", |
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"VDEF:avg=all,AVERAGE", |
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146 |
"VDEF:min=all,MINIMUM", |
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147 |
|
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148 |
"LINE1:in#0000FF:In", |
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149 |
"LINE1:out#00CC00:Out", |
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150 |
|
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151 |
"GPRINT:max:%6.2lf %Sbps max", |
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152 |
"GPRINT:avg:%6.2lf %Sbps avg", |
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"GPRINT:min:%6.2lf %Sbps min\\l", |
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154 |
|
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155 |
# dimensions |
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width = 600, |
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height = 50, |
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158 |
) |
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159 |
|
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160 |
def style_detail (graph) : |
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161 |
""" |
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162 |
in/out bps -> detail graph |
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163 |
""" |
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164 |
|
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165 |
return graph( |
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166 |
# values |
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167 |
'VDEF:in_max=in,MAXIMUM', |
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168 |
'VDEF:in_avg=in,AVERAGE', |
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169 |
'VDEF:in_min=in,MINIMUM', |
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170 |
'VDEF:in_cur=in,LAST', |
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171 |
'VDEF:out_max=out,MAXIMUM', |
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172 |
'VDEF:out_avg=out,AVERAGE', |
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173 |
'VDEF:out_min=out,MINIMUM', |
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174 |
'VDEF:out_cur=out,LAST', |
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175 |
|
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176 |
# legend/graph |
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"COMMENT:%4s" % "", |
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"COMMENT:%11s" % "Maximum", |
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"COMMENT:%11s" % "Average", |
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"COMMENT:%11s" % "Minimum", |
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"COMMENT:%11s\\l" % "Current", |
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182 |
|
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"LINE1:in#0000FF:%4s" % "In", |
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184 |
'GPRINT:in_max:%6.2lf %Sbps', |
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185 |
'GPRINT:in_avg:%6.2lf %Sbps', |
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186 |
'GPRINT:in_min:%6.2lf %Sbps', |
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'GPRINT:in_cur:%6.2lf %Sbps\\l', |
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188 |
|
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"LINE1:out#00CC00:%4s" % "Out", |
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190 |
'GPRINT:out_max:%6.2lf %Sbps', |
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191 |
'GPRINT:out_avg:%6.2lf %Sbps', |
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192 |
'GPRINT:out_min:%6.2lf %Sbps', |
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'GPRINT:out_cur:%6.2lf %Sbps\\l', |
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194 |
|
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# mark |
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"COMMENT:Generated {now}\\r".format(now=timestamp().replace(':', '\\:')), |
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197 |
|
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# dimensions |
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width = 600, |
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height = 200, |
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) |
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|
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STYLE = { |
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'overview': style_overview, |
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'detail': style_detail, |
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} |
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|
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def style (self, style) : |
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return self.STYLE[style](self) |
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|
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## interval |
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def interval_daily (graph) : |
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""" |
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Common options for the 'daily' view |
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""" |
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|
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return graph( |
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# labels |
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x_grid = "MINUTE:15:HOUR:1:HOUR:4:0:%H:%M", |
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|
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# general info |
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title = "Daily {graph[title]}".format(graph=graph), |
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|
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# interval |
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start = "-24h", |
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) |
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|
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def interval_weekly (graph) : |
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return graph( |
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# labels |
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# x_grid = "MINUTE:15:HOUR:1:HOUR:4:0:%H:%M", |
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|
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# general info |
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title = "Weekly {graph[title]}".format(graph=graph), |
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|
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# interval |
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start = "-7d", |
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) |
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|
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def interval_yearly (graph) : |
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return graph( |
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# labels |
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# x_grid = "MINUTE:15:HOUR:1:HOUR:4:0:%H:%M", |
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244 |
|
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# general info |
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title = "Yearly {graph[title]}".format(graph=graph), |
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|
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# interval |
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start = "-1y", |
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) |
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|
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INTERVAL = { |
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'daily': interval_daily, |
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'weekly': interval_weekly, |
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'yearly': interval_yearly, |
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} |
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|
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def interval (self, interval) : |
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return self.INTERVAL[interval](self) |
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|
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# specific types |
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class Mrtg (Interface) : |
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""" |
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MRTG -> in/out |
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""" |
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|
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IN = 'ds0' |
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OUT = 'ds1' |
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|
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class CollectdIfOctets (Interface) : |
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""" |
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Collectd if_octets -> in/out |
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""" |
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|
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IN = 'rx' |
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OUT = 'tx' |
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|
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INTERFACE = { |
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'mrtg': Mrtg, |
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'collectd': CollectdIfOctets, |
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} |
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|
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def interface_type (type) : |
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""" |
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Lookup Interface -subclass for given type. |
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""" |
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|
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return INTERFACE[type] |
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# XXX: legacy |
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def mrtg (style, interval, title, rrd, out) : |
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return MrtgInterface.build(title, rrd, style, interval).graph(out) |
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def collectd_ifoctets (style, interval, title, rrd, out) : |
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return CollectdIfOctets.build(title, rrd, style, interval).graph(out) |
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if __name__ == '__main__': |
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import doctest |
9f2967ba81ef
pvl.rrd.graph: refactor to use Graph -> Interface -> Mrtg/CollectdIfOctets
Tero Marttila <terom@paivola.fi>
parents:
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doctest.testmod() |
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fb48ba17ae3e
pvl.rrd: copy+update from old rrdweb
Tero Marttila <terom@paivola.fi>
parents:
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