author | Tero Marttila <terom@paivola.fi> |
Sun, 20 Jan 2013 18:31:21 +0200 | |
changeset 153 | 8930f54b59b4 |
parent 152 | 33b98b46d8fb |
child 154 | 11df86fd2d67 |
permissions | -rw-r--r-- |
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# encoding: utf-8 |
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parents:
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2 |
""" |
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parents:
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http://verkko.paivola.fi/rrd |
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parents:
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""" |
33b98b46d8fb
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Tero Marttila <terom@paivola.fi>
parents:
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|
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parents:
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import pvl.web.application as web |
33b98b46d8fb
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parents:
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from pvl.web import urls |
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from pvl.web.html import tags as html |
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parents:
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|
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parents:
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10 |
import pvl.rrd |
33b98b46d8fb
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parents:
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|
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parents:
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import logging; log = logging.getLogger('pvl.verkko.rrd') |
33b98b46d8fb
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parents:
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parents:
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14 |
# Model |
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parents:
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import os, os.path |
33b98b46d8fb
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parents:
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|
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class RRDDatabase (object) : |
33b98b46d8fb
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""" |
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parents:
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A filesystem directory containing .rrd files. |
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parents:
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""" |
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parents:
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def __init__ (self, path) : |
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if not path : |
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raise ValueError("RRDDatabase: no path given") |
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log.info("%s", path) |
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self._path = path |
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parents:
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def path (self, node=None, *subnodes) : |
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parents:
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""" |
33b98b46d8fb
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parents:
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Lookup and full filesystem path to the given relative RRD/dir path. |
33b98b46d8fb
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parents:
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|
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parents:
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Raises ValueError if invalid path. |
33b98b46d8fb
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parents:
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""" |
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parents:
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|
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parents:
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if node : |
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parents:
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# relative dir (no leading slash) -> absolute path |
33b98b46d8fb
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parents:
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path = os.path.normpath(os.path.join(self._path, node, *subnodes)) |
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parents:
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else : |
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parents:
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path = self._path |
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|
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log.debug("%s: %s -> %s", self, node, path) |
33b98b46d8fb
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|
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# check inside base path |
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if not path.startswith(self._path) : |
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# mask |
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raise ValueError("%s: Invalid path: %s" % (self, node)) |
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|
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# ok |
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return path |
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|
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def tree (self, node=None) : |
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""" |
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Lookup and return RRDTree for given node, or root tree. |
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|
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Raises ValueError if invalid path, or no such tree. |
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""" |
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|
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# lookup fs path |
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path = self.path(node) |
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|
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# found? |
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if not os.path.isdir(path) : |
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raise ValueError("%s: Invalid tree: %s: %s" % (self, node, path)) |
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|
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return node |
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|
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def rrd (self, node, tree=None) : |
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""" |
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Lookup and return RRD for given node. |
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""" |
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if tree : |
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node = os.path.join(tree, node) |
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node += '.rrd' |
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|
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path = self.path(node) |
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|
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if not os.path.isfile(path) : |
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raise ValueError("%: Invalid rrd: %s: %s" % (self, node, path)) |
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|
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return node |
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def list (self, tree) : |
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""" |
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List (trees, rrds) under given tree. |
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""" |
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dirs = [] |
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rrds = [] |
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for name in os.listdir(self.path(tree)) : |
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if name.startswith('.') : |
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continue |
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log.debug("%s: %s: %s", self, tree, name) |
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path = self.path(tree, name) |
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101 |
basename, extname = os.path.splitext(name) |
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102 |
|
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103 |
if os.path.isdir(path) : |
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104 |
dirs.append(name) |
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105 |
|
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106 |
elif extname == '.rrd' : |
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107 |
# without the .rrd |
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108 |
rrds.append(basename) |
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109 |
|
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110 |
# return sorted lists |
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111 |
return sorted(dirs), sorted(rrds) |
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112 |
|
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113 |
def graph (self, rrd, style, interval) : |
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114 |
""" |
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115 |
Graph given rrd using given style/interval, returning the opened png data file. |
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116 |
""" |
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117 |
|
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118 |
title = " / ".join(rrd.split('/')) |
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119 |
|
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log.debug("%s: %s: %s/%s", self, rrd, style, interval) |
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121 |
|
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122 |
# XXX: lookup graph style.. |
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123 |
# XXX: collectd |
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124 |
# XXX: out=None -> tempfile |
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125 |
dimensions, lines, outfile = pvl.rrd.graph.collectd_ifoctets(style, interval, title, self.path(rrd), None) |
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126 |
|
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127 |
log.debug("%s: %s: %s", self, rrd, outfile) |
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128 |
|
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129 |
return outfile |
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130 |
|
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131 |
def __str__ (self) : |
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132 |
return str(self._path) |
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133 |
|
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134 |
# View/Controller |
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135 |
class Handler (web.Handler) : |
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136 |
CSS = ( |
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137 |
"/static/rrd.css", |
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138 |
) |
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139 |
|
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140 |
def title (self) : |
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141 |
return u"Päivölä Network - Network RRD Traffic Graphs" |
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142 |
|
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143 |
def breadcrumb (self, _tree, target=None) : |
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144 |
""" |
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145 |
Yield (title, url) navigation breadcrumbs |
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146 |
""" |
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147 |
|
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148 |
yield '/', self.url(Index) |
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149 |
|
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150 |
if _tree : |
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151 |
tree = '' |
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152 |
|
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153 |
for part in _tree.split('/') : |
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154 |
tree = os.path.join(tree, part) |
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155 |
|
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156 |
yield part, self.url(Index, tree=tree) |
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157 |
|
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158 |
if target : |
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159 |
# Target |
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160 |
yield target, self.url(Target, tree=tree, target=self.target) |
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161 |
|
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162 |
def render_breadcrumb (self, tree, target=None) : |
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163 |
""" |
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164 |
Render breadcrumb -> html.div |
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165 |
""" |
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166 |
|
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167 |
return html.div(id='breadcrumb')(html(" » ".join( |
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168 |
str(html.a(href=url)(node)) for node, url in self.breadcrumb(tree, target))) |
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169 |
) |
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170 |
|
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171 |
class Index (Handler) : |
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172 |
""" |
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173 |
Browse trees, show overview graphs for targets. |
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174 |
""" |
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175 |
|
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176 |
def _title (self) : |
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177 |
if self.tree : |
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178 |
return html(" » ".join(self.tree.split('/'))) |
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179 |
else : |
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180 |
return "" |
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181 |
|
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182 |
def url_tree (self, node) : |
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183 |
""" |
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184 |
Return url for given sub-node. |
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185 |
""" |
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186 |
|
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187 |
if self.tree : |
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188 |
path = os.path.join(self.tree, node) |
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189 |
else : |
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190 |
path = node |
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191 |
|
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192 |
return self.url(tree=path) |
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193 |
|
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194 |
def process (self, tree=None) : |
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195 |
""" |
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196 |
Lookup path -> self.tree. |
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197 |
""" |
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198 |
|
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199 |
if tree : |
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200 |
try : |
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201 |
# XXX: unicode? |
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self.tree = self.app.rrd.tree(tree) |
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except ValueError as ex : |
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# mask |
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raise web.NotFound(tree) |
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else : |
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# root |
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self.tree = self.app.rrd.tree() |
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def render_list (self, items) : |
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return ( |
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html.li(class_=('odd' if idx % 2 else 'even'))(item) for idx, item in enumerate(items) |
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) |
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def render_rrd (self, rrd) : |
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""" |
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Render overview link/image for given rrd. |
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""" |
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target_url = self.url(Target, tree=self.tree, target=rrd) |
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graph_url = self.url(Graph, tree=self.tree, target=rrd) |
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return html.a(href=target_url)( |
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html.h3(rrd), |
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html.img(src=graph_url), |
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) |
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def render (self) : |
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""" |
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Render list of trees/rrds. |
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""" |
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trees, rrds = self.app.rrd.list(self.tree) |
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return self.render_breadcrumb(self.tree), html.div(id='overview')( |
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html.ul(id='tree-list')( |
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self.render_list( |
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html.a(href=self.url_tree(subtree))(subtree) |
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for subtree in trees) |
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) if trees else None, |
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html.hr() if trees and rrds else None, |
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html.ul(id='rrd-list')( |
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self.render_list( |
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self.render_rrd(rrd) |
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for rrd in rrds) |
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) if rrds else None, |
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) |
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class Target (Handler) : |
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""" |
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Show graphs for RRD file. |
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""" |
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def _title (self) : |
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return html(" » ".join(self.rrd.split('/'))) |
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def process (self, target, tree=None) : |
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""" |
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Lookup tree/target -> self.target |
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""" |
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try : |
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self.tree = self.app.rrd.tree(tree) |
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self.rrd = self.app.rrd.rrd(target, self.tree) |
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self.target = target |
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except ValueError as ex : |
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raise web.NotFound(tree, target) |
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def render_interval (self, interval, style='detail') : |
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""" |
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Render detail link/image. |
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""" |
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graph_url = self.url(Graph, tree=self.tree, target=self.target, style=style, interval=interval) |
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return ( |
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html.h2(interval.title()), |
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html.img(src=graph_url) |
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) |
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INTERVALS = ('daily', 'weekly', 'yearly') |
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def render (self) : |
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return self.render_breadcrumb(self.tree, self.target), html.div(id='detail')( |
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self.render_interval(interval) for interval in self.INTERVALS |
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) |
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from pvl.invoke import merge # XXX |
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import werkzeug # wrap_file |
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class Graph (Handler) : |
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""" |
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Render graph for RRD. |
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""" |
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ARGS = { 'interval': 'daily', 'style': 'overview' } |
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def process (self, tree, target, style, interval) : |
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""" |
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Return Graph for given options. |
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""" |
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try : |
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self.tree = self.app.rrd.tree(tree) |
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self.rrd = self.app.rrd.rrd(target, self.tree) |
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|
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except ValueError as ex : |
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raise web.NotFound(tree, target) |
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|
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self.style = style |
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self.interval = interval |
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|
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def render_png (self) : |
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""" |
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Return PNG data as a file-like object for our graph. |
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""" |
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|
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return self.app.rrd.graph(self.rrd, self.style, self.interval) |
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|
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def respond (self) : |
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""" |
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Return Response for our request. |
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""" |
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|
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# process params+args -> self.graph |
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process = merge(self.params, dict((arg, self.request.args.get(arg, default)) for arg, default in self.ARGS.iteritems())) |
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response = self.process(**process) |
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|
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if response : |
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return response |
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|
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# PNG output |
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render = self.render_png() |
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file = werkzeug.wrap_file(self.request.environ, render) |
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|
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# respond with file wrapper |
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return web.Response(file, mimetype='image/png', direct_passthrough=True) |
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|
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# WSGI |
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class Application (web.Application) : |
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urls = urls.Map(( |
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urls.rule('/', Index), |
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urls.rule('/<target>', Target), |
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urls.rule('/<path:tree>/', Index), |
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urls.rule('/<path:tree>/<target>', Target), |
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urls.rule('/<path:tree>/<target>.png', Graph), |
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)) |
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|
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def __init__ (self, rrd) : |
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""" |
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Initialize app with given RRDDatabase |
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""" |
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|
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self.rrd = rrd |
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358 |