source: src/mlx/logger.py@ 94:dc8fbc53a90c

Last change on this file since 94:dc8fbc53a90c was 87:b13b4d827920, checked in by István Váradi <ivaradi@…>, 13 years ago

Logger messages do not go to the standard output too

File size: 3.4 KB
Line 
1# Module for the logging.
2
3#--------------------------------------------------------------------------------------
4
5import const
6
7import sys
8import time
9
10#--------------------------------------------------------------------------------------
11
12class Logger(object):
13 """The class with the interface to log the various events."""
14 # FIXME: shall we use const.stage2string() instead?
15 _stages = { const.STAGE_BOARDING : "Boarding",
16 const.STAGE_PUSHANDTAXI : "Pushback and Taxi",
17 const.STAGE_TAKEOFF : "Takeoff",
18 const.STAGE_RTO : "RTO",
19 const.STAGE_CLIMB : "Climb",
20 const.STAGE_CRUISE : "Cruise",
21 const.STAGE_DESCENT : "Descent",
22 const.STAGE_LANDING : "Landing",
23 const.STAGE_TAXIAFTERLAND : "Taxi",
24 const.STAGE_PARKING : "Parking",
25 const.STAGE_GOAROUND : "Go-Around",
26 const.STAGE_END : "End" }
27
28 NO_GO_SCORE = 10000
29
30 def __init__(self, output = sys.stdout):
31 """Construct the logger."""
32 self._faults = {}
33 self._output = output
34
35 @staticmethod
36 def _getTimeStr(timestamp):
37 """Get the string representation of the given timestamp."""
38 return time.strftime("%H:%M:%S", time.gmtime(timestamp))
39
40 def reset(self):
41 """Reset the logger.
42
43 The faults logged so far will be cleared."""
44 self._faults.clear()
45
46 def message(self, timestamp, msg):
47 """Put a simple textual message into the log with the given timestamp."""
48 timeStr = Logger._getTimeStr(timestamp)
49 print >> self._output, timeStr + ":", msg
50
51 def untimedMessage(self, msg):
52 """Put an untimed message into the log."""
53 print >> self._output, msg
54
55 def debug(self, msg):
56 """Log a debug message."""
57 print "[DEBUG]", msg
58
59 def stage(self, timestamp, stage):
60 """Report a change in the flight stage."""
61 s = Logger._stages[stage] if stage in Logger._stages else "<Unknown>"
62 self.message(timestamp, "--- %s ---" % (s,))
63 if stage==const.STAGE_END:
64 self.untimedMessage("Rating: %.0f" % (self.getRating(),))
65
66 def fault(self, faultID, timestamp, what, score):
67 """Report a fault.
68
69 faultID as a unique ID for the given kind of fault. If another fault of
70 this ID has been reported earlier, it will be reported again only if
71 the score is greater than last time. This ID can be, e.g. the checker
72 the report comes from."""
73 if faultID in self._faults:
74 if score<=self._faults[faultID]:
75 return
76 self._faults[faultID] = score
77 if score==Logger.NO_GO_SCORE:
78 self.message(timestamp, "%s (NO GO)" % (what))
79 else:
80 self.message(timestamp, "%s (%.1f)" % (what, score))
81
82 def noGo(self, faultID, timestamp, what):
83 """Report a No-Go fault."""
84 self.fault(faultID, timestamp, what, Logger.NO_GO_SCORE)
85
86 def getRating(self):
87 """Get the rating of the flight so far."""
88 totalScore = 100
89 for (id, score) in self._faults.iteritems():
90 if score==Logger.NO_GO_SCORE:
91 return -score
92 else:
93 totalScore -= score
94 return totalScore
95
96#--------------------------------------------------------------------------------------
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