author | Tero Marttila <terom@paivola.fi> |
Sun, 10 Feb 2013 13:20:29 +0200 | |
changeset 205 | f7658198c224 |
parent 156 | 999ae3e9fdec |
permissions | -rw-r--r-- |
156
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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1 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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2 |
RRD file on filesystem. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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3 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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4 |
|
999ae3e9fdec
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parents:
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5 |
import os, os.path, errno |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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6 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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7 |
import logging; log = logging.getLogger('pvl.rrd.rrds') |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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8 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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9 |
class RRDDatabase (object) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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10 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
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11 |
A filesystem directory containing .rrd files. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
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12 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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13 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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14 |
def __init__ (self, path, graph_type, cache=None) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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15 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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16 |
path - path to rrd dirs |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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17 |
graph_type - pvl.rrd.graph.InterfaceGraph type |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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18 |
cache - optional RRDCache |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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19 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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20 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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21 |
if not path : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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22 |
raise ValueError("RRDDatabase: no path given") |
999ae3e9fdec
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parents:
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23 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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24 |
log.info("%s: graph_type=%s, cache=%s", path, graph_type, cache) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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25 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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26 |
self.graph_type = graph_type |
999ae3e9fdec
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parents:
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27 |
self._path = path |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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28 |
self.cache = cache |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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29 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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30 |
def path (self, *nodes) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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31 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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32 |
Lookup and full filesystem path to the given relative RRD/dir path. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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33 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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34 |
Raises ValueError if invalid path. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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35 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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36 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
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37 |
# relative dir (no leading slash) -> absolute path |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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38 |
path = os.path.normpath(os.path.join(self._path, *nodes)) |
999ae3e9fdec
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39 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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40 |
log.debug("%s: %s -> %s", self, nodes, path) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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41 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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42 |
# check inside base path |
999ae3e9fdec
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parents:
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43 |
if not path.startswith(self._path.rstrip('/')) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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44 |
# mask |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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45 |
raise ValueError("%s: Invalid path: %s" % (self, nodes)) |
999ae3e9fdec
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parents:
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46 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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47 |
# ok |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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48 |
return path |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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49 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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50 |
def tree (self, node=None) : |
999ae3e9fdec
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parents:
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51 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
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52 |
Lookup and return XXX:RRDTree for given node, or root tree. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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53 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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54 |
Raises ValueError if invalid path, or no such tree. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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55 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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56 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
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57 |
# lookup fs path |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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58 |
if node : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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59 |
path = self.path(node) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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60 |
else : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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61 |
path = self.path() |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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62 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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63 |
# found? |
999ae3e9fdec
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64 |
if not os.path.isdir(path) : |
999ae3e9fdec
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raise ValueError("%s: Invalid tree: %s: %s" % (self, node, path)) |
999ae3e9fdec
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parents:
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66 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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67 |
if node : |
999ae3e9fdec
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parents:
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68 |
return node |
999ae3e9fdec
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parents:
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69 |
else : |
999ae3e9fdec
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parents:
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70 |
return '' # equivalent |
999ae3e9fdec
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parents:
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71 |
|
999ae3e9fdec
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parents:
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72 |
def rrd (self, node, tree=None) : |
999ae3e9fdec
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parents:
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73 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
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74 |
Lookup and return RRD for given node. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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75 |
""" |
999ae3e9fdec
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parents:
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76 |
|
999ae3e9fdec
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parents:
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77 |
if tree : |
999ae3e9fdec
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parents:
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78 |
node = os.path.join(tree, node) |
999ae3e9fdec
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parents:
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79 |
|
999ae3e9fdec
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parents:
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|
80 |
path = self.path(node) + '.rrd' |
999ae3e9fdec
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parents:
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81 |
|
999ae3e9fdec
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parents:
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82 |
if not os.path.isfile(path) : |
999ae3e9fdec
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parents:
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83 |
raise ValueError("%: Invalid rrd: %s: %s" % (self, node, path)) |
999ae3e9fdec
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parents:
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84 |
|
999ae3e9fdec
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parents:
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85 |
return RRD(self, node, self.graph_type) |
999ae3e9fdec
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parents:
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86 |
|
999ae3e9fdec
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parents:
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87 |
def list (self, tree=None) : |
999ae3e9fdec
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parents:
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88 |
""" |
999ae3e9fdec
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Tero Marttila <terom@paivola.fi>
parents:
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|
89 |
List (trees, rrds) under given tree. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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90 |
""" |
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91 |
|
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parents:
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92 |
dirs = [] |
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93 |
rrds = [] |
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94 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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95 |
path = self.path(tree) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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parents:
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96 |
|
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|
97 |
for name in os.listdir(path) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
98 |
if name.startswith('.') : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
99 |
continue |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
100 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
101 |
path = self.path(tree, name) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
102 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
103 |
basename, extname = os.path.splitext(name) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
104 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
105 |
log.debug("%s: %s: %s: %s", self, tree, name, path) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
106 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
107 |
if os.path.isdir(path) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
108 |
dirs.append(name) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
109 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
110 |
elif extname == '.rrd' : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
111 |
# without the .rrd |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
112 |
rrds.append(basename) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
113 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
114 |
# return sorted lists |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
115 |
return sorted(dirs), sorted(rrds) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
116 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
117 |
def graph (self, rrd, style, interval, cache=True) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
118 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
119 |
Cached RRD.graph(), returning outfile. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
120 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
121 |
Uses self.cache if cache, otherwise graphs to tempfile. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
122 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
123 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
124 |
path = rrd.path() |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
125 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
126 |
if self.cache and cache : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
127 |
# path in cache |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
128 |
out = self.cache.path(style, interval, str(rrd)) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
129 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
130 |
# hit/miss? |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
131 |
cache = self.cache.lookup(path, out) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
132 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
133 |
else : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
134 |
# tempfile |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
135 |
out = None |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
136 |
cache = None |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
137 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
138 |
log.debug("%s: %s: %s", self, rrd, out) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
139 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
140 |
if cache : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
141 |
# from cache |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
142 |
outfile = open(out) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
143 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
144 |
else : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
145 |
# to cache/tempfile |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
146 |
dimensions, lines, outfile = rrd.graph(style, interval).graph(out) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
147 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
148 |
return outfile |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
149 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
150 |
def __str__ (self) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
151 |
return self._path |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
152 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
153 |
class RRD (object) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
154 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
155 |
An .rrd file on the filesystem, graphed using pvl.rrd.graph.Interface. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
156 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
157 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
158 |
def __init__ (self, db, rrd, graph_type) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
159 |
self.db = db |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
160 |
self.rrd = rrd |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
161 |
self.graph_type = graph_type |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
162 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
163 |
def path (self) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
164 |
return self.db.path(self.rrd) + '.rrd' |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
165 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
166 |
def graph (self, style, interval) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
167 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
168 |
Build Graph given rrd using given style/interval. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
169 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
170 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
171 |
path = self.path() |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
172 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
173 |
title = str(self) # " / ".join(rrd.split('/')) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
174 |
return self.graph_type.build(title, path, style, interval) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
175 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
176 |
def __str__ (self) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
177 |
return self.rrd |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
178 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
179 |
class RRDCache (object) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
180 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
181 |
Cache graph output in the filesystem. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
182 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
183 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
184 |
def __init__ (self, path) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
185 |
log.info("%s", path) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
186 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
187 |
self._path = path |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
188 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
189 |
def path (self, *key) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
190 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
191 |
Return cache path for key. |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
192 |
""" |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
193 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
parents:
diff
changeset
|
194 |
return os.path.join(self._path, *key) + '.png' |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
Tero Marttila <terom@paivola.fi>
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195 |
|
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196 |
def _stat (self, path) : |
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197 |
""" |
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198 |
os.stat or None. |
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199 |
""" |
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200 |
|
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201 |
try : |
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202 |
return os.stat(path) |
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203 |
|
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204 |
except OSError as ex : |
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205 |
if ex.errno == errno.ENOENT : |
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206 |
return None |
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207 |
else : |
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208 |
raise |
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209 |
|
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210 |
def lookup (self, source, path) : |
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211 |
""" |
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212 |
Return hit from cache. |
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213 |
""" |
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214 |
|
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215 |
# create |
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216 |
dir = os.path.dirname(path) |
999ae3e9fdec
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217 |
if not os.path.isdir(dir) : |
999ae3e9fdec
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218 |
log.warn("makedirs %s", dir) |
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219 |
os.makedirs(dir) |
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220 |
|
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221 |
# stats's |
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222 |
src = self._stat(source) |
999ae3e9fdec
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223 |
dst = self._stat(path) |
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224 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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225 |
if dst and src.st_mtime < dst.st_mtime : |
999ae3e9fdec
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226 |
log.debug("%s: %s: %s: hit", self, source, path) |
999ae3e9fdec
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227 |
|
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228 |
return True |
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229 |
|
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230 |
elif not dst: |
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231 |
log.debug("%s: %s: %s: miss", self, source, path) |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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232 |
return False |
999ae3e9fdec
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233 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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234 |
else : |
999ae3e9fdec
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235 |
log.debug("%s: %s: %s: update", self, source, path) |
999ae3e9fdec
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236 |
return None |
999ae3e9fdec
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237 |
|
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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238 |
def __str__ (self) : |
999ae3e9fdec
pvl.web.rrd: split out pvl.rrd.args + pvl.rrd.rrds; bugfix
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239 |
return self._path |