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moved python scripts to DataProcessing repo
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1
tools/python/.gitignore
vendored
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tools/python/.gitignore
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*.pyc
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# Python tools
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These python scripts are intended to manipulate measurements recorded by VILLASnode's `file` node-type.
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## Exampples
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##### Merge two files and filter the output based on timestamps
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```
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./file-merge.py testfile.dat testfile2.dat | ./file-filter.py 3 5 > output.dat
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```
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#!/usr/bin/env python
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import sys
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import villas
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from villas import *
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def main():
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if len(sys.argv) != 3:
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print "Usage: %s from to" % (sys.argv[0])
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sys.exit(-1)
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start = villas.Timestamp.parse(sys.argv[1])
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end = villas.Timestamp.parse(sys.argv[2])
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for line in sys.stdin:
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msg = villas.Message.parse(line)
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if start <= msg.ts <= end:
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print msg
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if __name__ == "__main__":
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main()
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#!/usr/bin/env python
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import sys
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import villas
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from villas import *
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def main():
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files = sys.argv[1:]
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all = [ ]
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last = { }
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for file in files:
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handle = sys.stdin if file == '-' else open(file, "r")
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msgs = [ ]
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for line in handle.xreadlines():
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msgs.append(villas.Message.parse(line, file))
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all += msgs
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last[file] = villas.Message(villas.Timestamp(), [0] * len(msgs[0].values), file)
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all.sort()
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for msg in all:
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last[msg.source] = msg
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values = [ ]
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for file in files:
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values += last[file].values
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print villas.Message(msg.ts, values, "")
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if __name__ == "__main__":
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main()
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from msg import Message
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from ts import Timestamp
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__all__ = [ "msg", "ts" ]
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from . import ts
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class Message:
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"""Parsing a VILLASnode sample from a file (not a UDP package!!)"""
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def __init__(self, ts, values, source = None):
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self.source = source
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self.ts = ts
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self.values = values
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@classmethod
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def parse(self, line, source = None):
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csv = line.split()
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t = ts.Timestamp.parse(csv[0])
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v = map(float, csv[1:])
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return Message(t, v, source)
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def __str__(self):
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return '%s %s' % (self.ts, " ".join(map(str, self.values)))
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def __cmp__(self, other):
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return cmp(self.ts, other.ts)
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import re
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class OcbMapping:
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def __init__(self, entityId, entityType, attributeName, attributeType):
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self.entityId = entityId
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self.entityType = entityType
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self.attributeName = attributeName
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self.attributeType = attributeType
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@classmethod
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def parse(self, lines):
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m = re.match('([a-z]+)\(([a-z]+)\)\.([a-z]+).\(([a-z]+)\)', re.I)
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return OcbMapping(m.group(1), m.group(2), m.group(3), m.group(4))
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@classMethod
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def parseFile(self, file):
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class OcbEntity:
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class OcbAttribute:
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class OcbResponse:
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def __init__(self, mapping):
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self.mapping = mapping
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def getJson(self, msg):
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json = { "contextResponses" : [ ] }
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for (value in msg.values):
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json["contextResponses"].append({
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"statusCode" : { "code" : 200, "reasonPhrase" : "OK" }
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"contextElement" : {
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"attributes" = [ ],
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"id" : "",
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"isPattern" : false,
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"type"
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}
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})
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import re
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class Timestamp:
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"""Parsing the VILLASnode human-readable timestamp format"""
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def __init__(self, seconds = 0, nanoseconds = None, offset = None, sequence = None):
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self.seconds = seconds
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self.nanoseconds = nanoseconds
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self.offset = offset
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self.sequence = sequence
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@classmethod
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def parse(self, ts):
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m = re.match('(\d+)(?:\.(\d+))?([-+]\d+(?:\.\d+)?(?:e[+-]?\d+)?)?(?:\((\d+)\))?', ts)
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seconds = int(m.group(1)); # Mandatory
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nanoseconds = int(m.group(2)) if m.group(2) else None
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offset = float(m.group(3)) if m.group(3) else None
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sequence = int(m.group(4)) if m.group(4) else None
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return Timestamp(seconds, nanoseconds, offset, sequence)
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def __str__(self):
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str = "%u" % (self.seconds)
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if self.nanoseconds is not None:
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str += ".%09u" % self.nanoseconds
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if self.offset is not None:
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str += "+%u" % self.offset
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if self.sequence is not None:
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str += "(%u)" % self.sequence
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return str
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def __float__(self):
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sum = float(self.seconds)
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if self.nanoseconds is not None:
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sum += self.nanoseconds * 1e-9
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if self.offset is not None:
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sum += self.offset
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return sum
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def __cmp__(self, other):
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return cmp(float(self), float(other))
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