[41] | 1 | # Interface towards the websites used
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| 2 |
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| 3 | #------------------------------------------------------------------------------
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| 4 |
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| 5 | import const
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| 6 |
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| 7 | import threading
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| 8 | import sys
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[51] | 9 | import urllib
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[41] | 10 | import urllib2
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| 11 | import hashlib
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| 12 | import datetime
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| 13 | import codecs
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| 14 |
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| 15 | #---------------------------------------------------------------------------------------
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| 16 |
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| 17 | def readline(f):
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| 18 | """Read a line from the given file.
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| 19 |
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| 20 | The line is stripped and empty lines are discarded."""
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| 21 | while True:
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| 22 | line = f.readline()
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| 23 | if not line: return ""
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| 24 | line = line.strip()
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| 25 | if line:
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| 26 | return line
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| 27 |
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| 28 | #---------------------------------------------------------------------------------------
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| 29 |
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| 30 | class BookedFlight(object):
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| 31 | """A flight that was booked."""
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| 32 | TYPECODE2TYPE = { "736" : const.AIRCRAFT_B736,
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| 33 | "73G" : const.AIRCRAFT_B737,
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| 34 | "738" : const.AIRCRAFT_B738,
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| 35 | "733" : const.AIRCRAFT_B733,
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| 36 | "734" : const.AIRCRAFT_B734,
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| 37 | "735" : const.AIRCRAFT_B735,
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| 38 | "DH4" : const.AIRCRAFT_DH8D,
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| 39 | "762" : const.AIRCRAFT_B762,
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| 40 | "763" : const.AIRCRAFT_B763,
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| 41 | "CR2" : const.AIRCRAFT_CRJ2,
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| 42 | "F70" : const.AIRCRAFT_F70,
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| 43 | "LI2" : const.AIRCRAFT_DC3,
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| 44 | "TU3" : const.AIRCRAFT_T134,
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| 45 | "TU5" : const.AIRCRAFT_T154,
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| 46 | "YK4" : const.AIRCRAFT_YK40 }
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| 47 |
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| 48 | def __init__(self, id, f):
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| 49 | """Construct a booked flight with the given ID.
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| 50 |
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| 51 | The rest of the data is read from the given file."""
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| 52 |
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| 53 | self.id = id
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| 54 | self.callsign = readline(f)
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| 55 |
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| 56 | date = readline(f)
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| 57 |
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| 58 | self.departureICAO = readline(f)
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| 59 | self.arrivalICAO = readline(f)
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| 60 |
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| 61 | self._readAircraftType(f)
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| 62 | self.tailNumber = readline(f)
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| 63 | self.numPassengers = int(readline(f))
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| 64 | self.numCrew = int(readline(f))
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| 65 | self.bagWeight = int(readline(f))
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| 66 | self.cargoWeight = int(readline(f))
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| 67 | self.mailWeight = int(readline(f))
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| 68 | self.route = readline(f)
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| 69 |
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| 70 | departureTime = readline(f)
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| 71 | self.departureTime = datetime.datetime.strptime(date + " " + departureTime,
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| 72 | "%Y-%m-%d %H:%M:%S")
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| 73 |
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| 74 | arrivalTime = readline(f)
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| 75 | self.arrivalTime = datetime.datetime.strptime(date + " " + arrivalTime,
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| 76 | "%Y-%m-%d %H:%M:%S")
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| 77 |
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| 78 | if not readline(f)==".NEXT.":
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| 79 | raise Exception("Invalid line in flight data")
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| 80 |
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| 81 | def _readAircraftType(self, f):
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| 82 | """Read the aircraft type from the given file."""
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| 83 | line = readline(f)
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| 84 | typeCode = line[:3]
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| 85 | if typeCode in self.TYPECODE2TYPE:
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| 86 | self.aircraftType = self.TYPECODE2TYPE[typeCode]
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| 87 | else:
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| 88 | raise Exception("Invalid aircraft type code: '" + typeCode + "'")
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| 89 |
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| 90 | def __repr__(self):
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| 91 | """Get a representation of the flight."""
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| 92 | s = "<Flight: %s-%s, %s, %s-%s," % (self.departureICAO,
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| 93 | self.arrivalICAO,
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| 94 | self.route,
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| 95 | self.departureTime, self.arrivalTime)
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| 96 | s += " %d %s," % (self.aircraftType, self.tailNumber)
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| 97 | s += " pax=%d, crew=%d, bag=%d, cargo=%d, mail=%d" % \
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| 98 | (self.numPassengers, self.numCrew,
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| 99 | self.bagWeight, self.cargoWeight, self.mailWeight)
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| 100 | s += ">"
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| 101 | return s
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| 102 |
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| 103 | #------------------------------------------------------------------------------
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| 104 |
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[51] | 105 | class Plane(object):
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| 106 | """Information about an airplane in the fleet."""
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| 107 | def __init__(self, s):
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| 108 | """Build a plane info based on the given string.
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| 109 |
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| 110 | The string consists of three, space-separated fields.
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| 111 | The first field is the tail number, the second field is the gate
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| 112 | number, the third field is the plane's status as a character."""
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| 113 | try:
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| 114 | words = s.split(" ")
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| 115 | tailNumber = words[0]
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| 116 | self.tailNumber = tailNumber
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| 117 |
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| 118 | status = words[2] if len(words)>2 else None
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| 119 | self.status = const.PLANE_HOME if status=="H" else \
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| 120 | const.PLANE_AWAY if status=="A" else \
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| 121 | const.PLANE_PARKING if status=="P" else \
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| 122 | const.PLANE_UNKNOWN
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| 123 |
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| 124 | gateNumber = words[1] if len(words)>1 else ""
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| 125 | self.gateNumber = gateNumber if gateNumber else None
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| 126 |
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| 127 | except:
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| 128 | print >> sys.stderr, "Plane string is invalid: '" + s + "'"
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| 129 | self.tailNumber = None
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| 130 |
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| 131 | def __repr__(self):
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| 132 | """Get the representation of the plane object."""
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| 133 | s = "<Plane: %s %s" % (self.tailNumber,
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| 134 | "home" if self.status==const.PLANE_HOME else \
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| 135 | "away" if self.status==const.PLANE_AWAY else \
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| 136 | "parking" if self.status==const.PLANE_PARKING \
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| 137 | else "unknown")
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| 138 | if self.gateNumber is not None:
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| 139 | s += " (gate " + self.gateNumber + ")"
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| 140 | s += ">"
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| 141 | return s
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| 142 |
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| 143 |
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| 144 | #------------------------------------------------------------------------------
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| 145 |
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| 146 | class Fleet(object):
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| 147 | """Information about the whole fleet."""
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| 148 | def __init__(self, f):
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| 149 | """Construct the fleet information by reading the given file object."""
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| 150 | self._planes = {}
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| 151 | while True:
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| 152 | line = readline(f)
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| 153 | if not line or line == "#END": break
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| 154 |
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| 155 | plane = Plane(line)
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| 156 | if plane.tailNumber is not None:
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| 157 | self._planes[plane.tailNumber] = plane
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| 158 |
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| 159 | def isGateConflicting(self, plane):
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| 160 | """Check if the gate of the given plane conflicts with another plane's
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| 161 | position."""
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| 162 | for p in self._planes.itervalues():
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| 163 | if p.tailNumber!=plane.tailNumber and \
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| 164 | p.status==const.PLANE_HOME and \
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| 165 | p.gateNumber==plane.gateNumber:
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| 166 | return True
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| 167 |
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| 168 | return False
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| 169 |
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| 170 | def getOccupiedGateNumbers(self):
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| 171 | """Get a set containing the numbers of the gates occupied by planes."""
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| 172 | gateNumbers = set()
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| 173 | for p in self._planes.itervalues():
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| 174 | if p.status==const.PLANE_HOME and p.gateNumber:
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| 175 | gateNumbers.add(p.gateNumber)
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| 176 | return gateNumbers
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| 177 |
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| 178 | def __getitem__(self, tailNumber):
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| 179 | """Get the plane with the given tail number.
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| 180 |
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| 181 | If the plane is not in the fleet, None is returned."""
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| 182 | return self._planes[tailNumber] if tailNumber in self._planes else None
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| 183 |
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| 184 | def __repr__(self):
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| 185 | """Get the representation of the fleet object."""
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| 186 | return self._planes.__repr__()
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| 187 |
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| 188 | #------------------------------------------------------------------------------
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| 189 |
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[41] | 190 | class Result(object):
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| 191 | """A result object.
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| 192 |
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| 193 | An instance of this filled with the appropriate data is passed to the
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| 194 | callback function on each request."""
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| 195 |
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| 196 | def __repr__(self):
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| 197 | """Get a representation of the result."""
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| 198 | s = "<Result:"
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| 199 | for (key, value) in self.__dict__.iteritems():
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| 200 | s += " " + key + "=" + unicode(value)
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| 201 | s += ">"
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| 202 | return s
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| 203 |
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| 204 | #------------------------------------------------------------------------------
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| 205 |
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| 206 | class Request(object):
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| 207 | """Base class for requests.
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| 208 |
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| 209 | It handles any exceptions and the calling of the callback.
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| 210 |
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| 211 | If an exception occurs during processing, the callback is called with
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| 212 | the two parameters: a boolean value of False, and the exception object.
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| 213 |
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| 214 | If no exception occurs, the callback is called with True and the return
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| 215 | value of the run() function.
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| 216 |
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| 217 | If the callback function throws an exception, that is caught and logged
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| 218 | to the debug log."""
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| 219 | def __init__(self, callback):
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| 220 | """Construct the request."""
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| 221 | self._callback = callback
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| 222 |
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| 223 | def perform(self):
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| 224 | """Perform the request.
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| 225 |
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| 226 | The object's run() function is called. If it throws an exception,
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| 227 | the callback is called with False, and the exception. Otherwise the
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| 228 | callback is called with True and the return value of the run()
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| 229 | function. Any exceptions thrown by the callback are caught and
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| 230 | reported."""
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| 231 | try:
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| 232 | result = self.run()
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| 233 | returned = True
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| 234 | except Exception, e:
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| 235 | result = e
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| 236 | returned = False
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| 237 |
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| 238 | try:
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| 239 | self._callback(returned, result)
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| 240 | except Exception, e:
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| 241 | print >> sys.stderr, "web.Handler.Request.perform: callback throwed an exception: " + str(e)
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| 242 |
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| 243 | #------------------------------------------------------------------------------
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| 244 |
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| 245 | class Login(Request):
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| 246 | """A login request."""
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| 247 | iso88592decoder = codecs.getdecoder("iso-8859-2")
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| 248 |
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[51] | 249 | def __init__(self, callback, pilotID, password):
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[41] | 250 | """Construct the login request with the given pilot ID and
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| 251 | password."""
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| 252 | super(Login, self).__init__(callback)
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| 253 |
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| 254 | self._pilotID = pilotID
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| 255 | self._password = password
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| 256 |
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| 257 | def run(self):
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| 258 | """Perform the login request."""
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| 259 | md5 = hashlib.md5()
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| 260 | md5.update(self._pilotID)
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| 261 | pilotID = md5.hexdigest()
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| 262 |
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| 263 | md5 = hashlib.md5()
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| 264 | md5.update(self._password)
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| 265 | password = md5.hexdigest()
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| 266 |
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| 267 | url = "http://www.virtualairlines.hu/leker2.php?pid=%s&psw=%s" % \
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| 268 | (pilotID, password)
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| 269 |
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| 270 | result = Result()
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| 271 |
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| 272 | f = urllib2.urlopen(url)
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| 273 |
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| 274 | status = readline(f)
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| 275 | result.loggedIn = status == ".OK."
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| 276 |
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| 277 | if result.loggedIn:
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| 278 | result.pilotName = self.iso88592decoder(readline(f))[0]
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| 279 | result.exams = readline(f)
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| 280 | result.flights = []
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| 281 |
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| 282 | while True:
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| 283 | line = readline(f)
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| 284 | if not line or line == "#ENDPIREP": break
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| 285 |
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| 286 | flight = BookedFlight(line, f)
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| 287 | result.flights.append(flight)
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| 288 |
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[48] | 289 | result.flights.sort(cmp = lambda flight1, flight2:
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| 290 | cmp(flight1.departureTime,
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| 291 | flight2.departureTime))
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| 292 |
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[51] | 293 | f.close()
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| 294 |
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[41] | 295 | return result
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| 296 |
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| 297 | #------------------------------------------------------------------------------
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| 298 |
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[51] | 299 | class GetFleet(Request):
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| 300 | """Request to get the fleet from the website."""
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| 301 |
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| 302 | def __init__(self, callback):
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| 303 | """Construct the fleet request."""
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| 304 | super(GetFleet, self).__init__(callback)
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| 305 |
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| 306 | def run(self):
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| 307 | """Perform the login request."""
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| 308 | url = "http://www.virtualairlines.hu/onlinegates_get.php"
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| 309 |
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| 310 | f = urllib2.urlopen(url)
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| 311 | result = Result()
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| 312 | result.fleet = Fleet(f)
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| 313 | f.close()
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| 314 |
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| 315 | return result
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| 316 |
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| 317 | #------------------------------------------------------------------------------
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| 318 |
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| 319 | class UpdatePlane(Request):
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| 320 | """Update the status of one of the planes in the fleet."""
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| 321 | def __init__(self, callback, tailNumber, status, gateNumber = None):
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| 322 | """Construct the request."""
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| 323 | super(UpdatePlane, self).__init__(callback)
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| 324 | self._tailNumber = tailNumber
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| 325 | self._status = status
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| 326 | self._gateNumber = gateNumber
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| 327 |
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| 328 | def run(self):
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| 329 | """Perform the plane update."""
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| 330 | url = "http://www.virtualairlines.hu/onlinegates_set.php"
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| 331 |
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| 332 | status = "H" if self._status==const.PLANE_HOME else \
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| 333 | "A" if self._status==const.PLANE_AWAY else \
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| 334 | "P" if self._status==const.PLANE_PARKING else ""
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| 335 |
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| 336 | gateNumber = self._gateNumber if self._gateNumber else ""
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| 337 |
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| 338 | data = urllib.urlencode([("lajstrom", self._tailNumber),
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| 339 | ("status", status),
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| 340 | ("kapu", gateNumber)])
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| 341 |
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| 342 | f = urllib2.urlopen(url, data)
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| 343 | line = readline(f)
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| 344 |
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| 345 | result = Result()
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| 346 | result.success = line == "OK"
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| 347 |
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| 348 | return result
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| 349 |
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| 350 | #------------------------------------------------------------------------------
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| 351 |
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[41] | 352 | class Handler(threading.Thread):
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| 353 | """The handler for the web services.
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| 354 |
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| 355 | It can process one request at a time. The results are passed to a callback
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| 356 | function."""
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| 357 | def __init__(self):
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| 358 | """Construct the handler."""
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| 359 | super(Handler, self).__init__()
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| 360 |
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| 361 | self._requests = []
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| 362 | self._requestCondition = threading.Condition()
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| 363 |
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| 364 | self.daemon = True
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| 365 |
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[51] | 366 | def login(self, callback, pilotID, password):
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[41] | 367 | """Enqueue a login request."""
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[51] | 368 | self._addRequest(Login(callback, pilotID, password))
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[41] | 369 |
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[51] | 370 | def getFleet(self, callback):
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| 371 | """Enqueue a fleet retrieval request."""
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| 372 | self._addRequest(GetFleet(callback))
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| 373 |
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| 374 | def updatePlane(self, callback, tailNumber, status, gateNumber = None):
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| 375 | """Update the status of the given plane."""
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| 376 | self._addRequest(UpdatePlane(callback, tailNumber, status, gateNumber))
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| 377 |
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[41] | 378 | def run(self):
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| 379 | """Process the requests."""
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| 380 | while True:
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| 381 | with self._requestCondition:
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| 382 | while not self._requests:
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| 383 | self._requestCondition.wait()
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| 384 | request = self._requests[0]
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| 385 | del self._requests[0]
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| 386 |
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| 387 | request.perform()
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| 388 |
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| 389 | def _addRequest(self, request):
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| 390 | """Add the given request to the queue."""
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| 391 | with self._requestCondition:
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| 392 | self._requests.append(request)
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| 393 | self._requestCondition.notify()
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| 394 |
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| 395 | #------------------------------------------------------------------------------
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| 396 |
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| 397 | if __name__ == "__main__":
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| 398 | import time
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| 399 |
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| 400 | def callback(returned, result):
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| 401 | print returned, unicode(result)
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| 402 |
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| 403 | handler = Handler()
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| 404 | handler.start()
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| 405 |
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[51] | 406 | #handler.login(callback, "P096", "V5fwj")
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| 407 | #handler.getFleet(callback)
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| 408 | # Plane: HA-LEG home (gate 67)
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| 409 | handler.updatePlane(callback, "HA-LQC", const.PLANE_AWAY, "72")
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| 410 | time.sleep(3)
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| 411 | handler.getFleet(callback)
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[41] | 412 | time.sleep(3)
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| 413 |
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| 414 | #------------------------------------------------------------------------------
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