[8] | 1 |
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[133] | 2 | from fs import sendMessage
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[8] | 3 | import const
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[97] | 4 | import util
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[8] | 5 |
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| 6 | import sys
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| 7 | import time
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[345] | 8 | import bisect
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[8] | 9 |
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| 10 | #--------------------------------------------------------------------------------------
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| 11 |
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[298] | 12 | ## @package mlx.logger
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| 13 | #
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| 14 | # The module for the logger.
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| 15 | #
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| 16 | # While the program itself is "logger", it contains an internal logger, which
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| 17 | # maintains the textual log containing information on the various events and is
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| 18 | # the reason why the program is called "logger".
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| 19 | #
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| 20 | # The log is made up of lines containing an optional timestamp and the text of
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| 21 | # the message. A line can be updated after having been put into the log by
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| 22 | # referring to its index.
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| 23 | #
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| 24 | # The logger object also maintains a separate set of faults and ensures that
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| 25 | # one fault type has only one score, even if that fault has been reported
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| 26 | # multiple times.
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| 27 |
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| 28 | #--------------------------------------------------------------------------------------
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| 29 |
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[8] | 30 | class Logger(object):
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[345] | 31 | """The class with the interface to log the various events.
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| 32 |
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| 33 | It contains a list of entries ordered by their timestamps and their ever
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| 34 | increasing IDs."""
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| 35 |
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| 36 | class Entry(object):
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| 37 | """An entry in the log."""
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| 38 |
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| 39 | # The ID of the next entry to be created
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| 40 | _nextID = 1
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| 41 |
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| 42 | def __init__(self, timestamp, text, showTimestamp = True,
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| 43 | faultID = None, faultScore = 0, id = None):
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| 44 | """Construct the entry."""
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| 45 | if id is None:
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| 46 | self._id = self._nextID
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| 47 | Logger.Entry._nextID += 1
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| 48 | else:
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| 49 | self._id = id
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| 50 |
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| 51 | self._timestamp = timestamp
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| 52 | self._text = text
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| 53 | self._showTimestamp = showTimestamp
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| 54 |
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| 55 | self._faultID = faultID
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| 56 | self._faultScore = faultScore
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| 57 |
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| 58 | @property
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| 59 | def id(self):
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| 60 | """Get the ID of the entry."""
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| 61 | return self._id
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| 62 |
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| 63 | @property
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| 64 | def timestamp(self):
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| 65 | """Get the timestamp of this entry."""
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| 66 | return self._timestamp
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| 67 |
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| 68 | @property
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| 69 | def timestampString(self):
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| 70 | """Get the timestamp string of this entry.
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| 71 |
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| 72 | It returns None, if the timestamp of the entry is not visible."""
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| 73 | return util.getTimestampString(self._timestamp) \
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| 74 | if self._showTimestamp else None
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| 75 |
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| 76 | @property
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| 77 | def text(self):
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| 78 | """Get the text of this entry."""
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| 79 | return self._text
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| 80 |
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| 81 | @property
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| 82 | def isFault(self):
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| 83 | """Determine if this is a log entry about a fault."""
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| 84 | return self._faultID is not None
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| 85 |
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| 86 | @property
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| 87 | def faultID(self):
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| 88 | """Get the fault ID of the entry.
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| 89 |
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| 90 | It may be None, if the entry is not a fault entry."""
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| 91 | return self._faultID
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| 92 |
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| 93 | @property
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| 94 | def faultScore(self):
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| 95 | """Get the fault score of the entry, if it is a fault."""
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| 96 | return self._faultScore
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| 97 |
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| 98 | def copy(self, text = None):
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| 99 | """Create a copy of this entry with the given values changed."""
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| 100 | return Logger.Entry(self._timestamp,
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| 101 | self._text if text is None else text,
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| 102 | showTimestamp = self._showTimestamp,
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| 103 | faultID = self._faultID,
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| 104 | faultScore = self._faultScore,
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| 105 | id = self._id)
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| 106 |
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| 107 | def __cmp__(self, other):
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| 108 | """Compare two entries
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| 109 |
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| 110 | First their timestamps are compared, and if those are equal, then
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| 111 | their IDs."""
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| 112 | result = cmp(self._timestamp, other.timestamp)
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| 113 | if result==0:
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| 114 | result = cmp(self._id, other._id)
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| 115 | return result
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| 116 |
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| 117 | class Fault(object):
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| 118 | """Information about a fault.
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| 119 |
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| 120 | It contains the list of log entries that belong to this fault. The list
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| 121 | is ordered so that the first element contains the entry with the
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| 122 | highest score, so that it should be easy to find the actual score."""
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| 123 | def __init__(self, entry):
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| 124 | """Construct the fault info with the given log entry as its only
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| 125 | one."""
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| 126 | self._entries = [entry]
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| 127 |
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| 128 | @property
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| 129 | def score(self):
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| 130 | """Get the score of this fault, i.e. the score of the entry with
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| 131 | the highest score."""
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| 132 | return self._entries[0].faultScore if self._entries else 0
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| 133 |
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| 134 | def addEntry(self, entry):
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| 135 | """Add an entry to this fault.
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| 136 |
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| 137 | The entries will be sorted."""
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| 138 | entries = self._entries
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| 139 | entries.append(entry)
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| 140 | entries.sort(key = Logger.Entry.faultScore, reverse = True)
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| 141 |
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| 142 | def removeEntry(self, entry):
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| 143 | """Remove the given entry.
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| 144 |
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| 145 | Returns True if at least one entry remains, False otherwise."""
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| 146 | entries = self._entries
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| 147 | for index in range(0, len(entries)):
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| 148 | if entry is entries[index]:
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| 149 | del entries[index]
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| 150 | break
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| 151 |
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| 152 | return len(entries)>0
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| 153 |
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[11] | 154 | # FIXME: shall we use const.stage2string() instead?
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[8] | 155 | _stages = { const.STAGE_BOARDING : "Boarding",
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| 156 | const.STAGE_PUSHANDTAXI : "Pushback and Taxi",
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| 157 | const.STAGE_TAKEOFF : "Takeoff",
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| 158 | const.STAGE_RTO : "RTO",
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| 159 | const.STAGE_CLIMB : "Climb",
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| 160 | const.STAGE_CRUISE : "Cruise",
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| 161 | const.STAGE_DESCENT : "Descent",
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| 162 | const.STAGE_LANDING : "Landing",
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| 163 | const.STAGE_TAXIAFTERLAND : "Taxi",
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| 164 | const.STAGE_PARKING : "Parking",
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| 165 | const.STAGE_GOAROUND : "Go-Around",
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| 166 | const.STAGE_END : "End" }
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[345] | 167 |
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[30] | 168 | NO_GO_SCORE = 10000
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[11] | 169 |
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[96] | 170 | def __init__(self, output):
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[8] | 171 | """Construct the logger."""
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[345] | 172 | self._entries = {}
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[96] | 173 | self._lines = []
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[345] | 174 |
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[11] | 175 | self._faults = {}
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[345] | 176 |
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[8] | 177 | self._output = output
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| 178 |
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[97] | 179 | @property
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| 180 | def lines(self):
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| 181 | """Get the lines of the log."""
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[345] | 182 | return [(entry.timestampString, entry.text) for entry in self._lines]
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[97] | 183 |
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| 184 | @property
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| 185 | def faultLineIndexes(self):
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[345] | 186 | """Get the sorted array of the indexes of those log lines that contain
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| 187 | a fault."""
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| 188 | faultLineIndexes = []
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| 189 | lines = self._lines
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| 190 | for index in range(0, len(lines)):
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| 191 | if lines[index].isFault:
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| 192 | faultLineIndexes.append(index)
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| 193 | return faultLineIndexes
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[24] | 194 |
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| 195 | def reset(self):
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| 196 | """Reset the logger.
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| 197 |
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| 198 | The faults logged so far will be cleared."""
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[345] | 199 | self._entries = {}
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[96] | 200 | self._lines = []
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[345] | 201 | self._faults = {}
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| 202 |
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| 203 | def message(self, timestamp, msg):
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| 204 | """Put a simple textual message into the log with the given timestamp.
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[8] | 205 |
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[345] | 206 | Returns an ID of the message so that it could be referred to later."""
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| 207 | return self._addEntry(Logger.Entry(timestamp, msg))
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| 208 |
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| 209 | def untimedMessage(self, msg):
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[17] | 210 | """Put an untimed message into the log."""
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[345] | 211 | timestamp = self._lines[-1].timestamp if self._lines else 0
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| 212 | return self._addEntry(Logger.Entry(timestamp, msg,
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| 213 | showTimestamp = False))
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[17] | 214 |
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[9] | 215 | def debug(self, msg):
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[8] | 216 | """Log a debug message."""
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[9] | 217 | print "[DEBUG]", msg
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[8] | 218 |
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| 219 | def stage(self, timestamp, stage):
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| 220 | """Report a change in the flight stage."""
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| 221 | s = Logger._stages[stage] if stage in Logger._stages else "<Unknown>"
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| 222 | self.message(timestamp, "--- %s ---" % (s,))
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[24] | 223 | if stage==const.STAGE_END:
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[31] | 224 | self.untimedMessage("Rating: %.0f" % (self.getRating(),))
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[134] | 225 | else:
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[315] | 226 | messageType = \
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| 227 | const.MESSAGETYPE_INFLIGHT if stage in \
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| 228 | [const.STAGE_CLIMB, const.STAGE_CRUISE, \
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| 229 | const.STAGE_DESCENT, const.STAGE_LANDING] \
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| 230 | else const.MESSAGETYPE_INFORMATION
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| 231 | sendMessage(messageType, "Flight stage: " + s, 3)
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[345] | 232 |
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[11] | 233 | def fault(self, faultID, timestamp, what, score):
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| 234 | """Report a fault.
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[8] | 235 |
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[11] | 236 | faultID as a unique ID for the given kind of fault. If another fault of
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| 237 | this ID has been reported earlier, it will be reported again only if
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| 238 | the score is greater than last time. This ID can be, e.g. the checker
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[345] | 239 | the report comes from.
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| 240 |
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| 241 | Returns an ID of the fault, or -1 if it was not logged."""
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[11] | 242 | if faultID in self._faults:
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[345] | 243 | if score<=self._faults[faultID].score:
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| 244 | return -1
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| 245 |
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[160] | 246 | text = "%s (NO GO)" % (what) if score==Logger.NO_GO_SCORE \
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| 247 | else "%s (%.1f)" % (what, score)
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[345] | 248 |
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| 249 | id = self._addEntry(Logger.Entry(timestamp, text, faultID = faultID,
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| 250 | faultScore = score))
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| 251 |
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[133] | 252 | (messageType, duration) = (const.MESSAGETYPE_NOGO, 10) \
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| 253 | if score==Logger.NO_GO_SCORE \
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| 254 | else (const.MESSAGETYPE_FAULT, 5)
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[345] | 255 | sendMessage(messageType, text, duration)
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| 256 |
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| 257 | return id
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[11] | 258 |
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[30] | 259 | def noGo(self, faultID, timestamp, what):
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[8] | 260 | """Report a No-Go fault."""
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[345] | 261 | return self.fault(faultID, timestamp, what, Logger.NO_GO_SCORE)
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[8] | 262 |
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[31] | 263 | def getRating(self):
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| 264 | """Get the rating of the flight so far."""
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[30] | 265 | totalScore = 100
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[345] | 266 | for fault in self._faults.itervalues():
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| 267 | score = fault.score
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[30] | 268 | if score==Logger.NO_GO_SCORE:
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| 269 | return -score
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| 270 | else:
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| 271 | totalScore -= score
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| 272 | return totalScore
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[96] | 273 |
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[345] | 274 | def updateLine(self, id, line):
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| 275 | """Update the line with the given ID with the given string.
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| 276 |
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| 277 | Note, that it does not change the status of the line as a fault!"""
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| 278 | self._updateEntry(id, self._entries[id].copy(text = line))
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| 279 |
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| 280 | def _addEntry(self, entry):
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| 281 | """Add the given entry to the log.
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| 282 |
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| 283 | @return the ID of the new entry."""
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| 284 | assert entry.id not in self._entries
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| 285 |
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| 286 | self._entries[entry.id] = entry
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| 287 |
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| 288 | if not self._lines or entry>self._lines[-1]:
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| 289 | index = len(self._lines)
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| 290 | self._lines.append(entry)
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| 291 | else:
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| 292 | index = bisect.bisect_left(self._lines, entry)
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| 293 | self._lines.insert(index, entry)
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| 294 |
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| 295 | if entry.isFault:
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| 296 | self._addFault(entry)
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| 297 |
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| 298 | self._output.insertFlightLogLine(index, entry.timestampString,
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| 299 | entry.text, entry.isFault)
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| 300 |
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| 301 | return entry.id
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[96] | 302 |
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[345] | 303 | def _updateEntry(self, id, newEntry):
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| 304 | """Update the entry with the given ID from the given new entry."""
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| 305 | self._removeEntry(id)
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| 306 | self._addEntry(newEntry)
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| 307 |
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| 308 | def _removeEntry(self, id):
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| 309 | """Remove the entry with the given ID."""
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| 310 | assert id in self._entries
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| 311 |
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| 312 | entry = self._entries[id]
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| 313 | del self._entries[id]
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| 314 |
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| 315 | for index in range(len(self._lines)-1, -1, -1):
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| 316 | if self._lines[index] is entry:
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| 317 | break
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| 318 | del self._lines[index]
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| 319 |
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| 320 | if entry.isFault:
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| 321 | faultID = entry.faultID
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| 322 | fault = self._faults[faultID]
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| 323 | if not fault.removeEntry(entry):
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| 324 | del self._faults[faultID]
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| 325 |
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| 326 | self._output.removeFlightLogLine(index)
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| 327 |
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| 328 | def _addFault(self, entry):
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| 329 | """Add the given fault entry to the fault with the given ID."""
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| 330 | faultID = entry.faultID
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| 331 | if faultID in self._faults:
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| 332 | self._faults[faultID].addEntry(entry)
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| 333 | else:
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| 334 | self._faults[faultID] = Logger.Fault(entry)
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| 335 |
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[8] | 336 | #--------------------------------------------------------------------------------------
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