mirror of
https://github.com/xcat2/confluent.git
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Rework prototype cbl reader
It is still not right, but it is a bit easier to work with to figure out what's wrong with it.
This commit is contained in:
Jarrod Johnson
parent
b2c1137321
commit
996b1ba45b
@ -17,92 +17,146 @@ def writeout(data):
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except IOError:
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pass
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def main(binfile, txtfile):
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binf = open(binfile, 'r')
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txtf = open(txtfile, 'r')
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records = collections.deque([])
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records.append(get_next_text_record(binf))
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class LogReplay(object):
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def __init__(self, logfile, cblfile):
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self.bin = open(cblfile, 'r')
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self.txt = open(logfile, 'r')
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self.dbgout = open('/tmp/cbldbg.out', 'w')
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self.cleardata = []
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self.clearidx = 0
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self.pendingdata = collections.deque([])
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self.priordata = collections.deque([])
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self.laststamp = None
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def _rewind(self, datasize=None):
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curroffset = self.bin.tell() - 16
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if self.cleardata and self.clearidx > 0:
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self.clearidx -= 1
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priordata = self.cleardata[self.clearidx]
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return curroffset, priordata
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newoffset = curroffset - 32
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if newoffset < 0: #TODO: Follow a log roll
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newoffset = 0
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if datasize:
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while datasize > 0 and newoffset > 0:
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self.dbgout.write('seeking to {0}!\n'.format(newoffset))
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self.dbgout.flush()
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self.bin.seek(newoffset)
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tmprec = self.bin.read(16)
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newoffset -= 32
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tmprec = struct.unpack('!BBIHIBBH', tmprec)
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if tmprec[1] == 2:
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datasize -= tmprec[3]
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if newoffset >= 0:
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self.dbgout.write('seeking to {0}!\n'.format(newoffset))
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self.dbgout.flush()
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self.bin.seek(newoffset)
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return curroffset, None
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def debuginfo(self):
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return '{0}, {1}'.format(self.bin.tell(), self.clearidx)
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def get_output(self, reverse=False):
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endoffset = None
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output = ''
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if reverse: # Forget the uncommited future, if present
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output += '\x1b[2J'
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endoffset, priordata = self._rewind(4096)
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if priordata is not None:
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return priordata, 1
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if self.cleardata and self.clearidx < len(self.cleardata):
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datachunk = self.cleardata[self.clearidx]
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self.clearidx += 1
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return datachunk, 1
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self.cleardata = []
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self.clearidx = 0
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while (not reverse) or (self.bin.tell() < endoffset):
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record = self.bin.read(16)
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record = struct.unpack('!BBIHIBBH', record)
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if record[0] > 16:
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# Unsupported record, skip
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self.bin.seek(record[0] - 16, 1)
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continue
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type = record[1]
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offset = record[2]
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size = record[3]
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evtdata = record[5]
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auxdata = record[6]
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if type == 3:
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#TODO: provide data for status bar
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continue
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elif type == 2:
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self.laststamp = record[4]
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self.txt.seek(offset)
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txtout = self.txt.read(size)
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if reverse and self.bin.tell() < endoffset:
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output += txtout
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continue
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if '\x1b[2J' in txtout:
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self.cleardata = ['\x1b[2J' + x for x in txtout.split('\x1b[2J') if x]
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self.clearidx = 0
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if self.cleardata:
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output += self.cleardata[0]
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self.clearidx = 1
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else:
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output += txtout
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break
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if endoffset is not None and endoffset >= 0:
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self.dbgout.write('seeking to {0}\n'.format(endoffset))
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self.dbgout.flush()
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self.bin.seek(endoffset)
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return output, 1
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def main(txtfile, binfile):
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replay = LogReplay(txtfile, binfile)
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oldtcattr = termios.tcgetattr(sys.stdin.fileno())
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tty.setraw(sys.stdin.fileno())
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currfl = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
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fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, currfl | os.O_NONBLOCK)
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while True:
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newdata = showrecords(records, txtf, binf)
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select.select((sys.stdin,), (), (), 86400)
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myinput = sys.stdin.read()
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if myinput == '\x1b[C': # right
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if newdata:
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sys.stdout.write(newdata)
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newdata = ''
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if not records:
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records.append(get_next_text_record(binf))
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elif myinput == '\x1b[D': # left
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sys.stdout.write('\x1b[2J\x1b[;H')
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prevoffset = 1
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restoreoffset = binf.tell() - 16
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while len(records) < 16 and prevoffset > 0:
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prevoffset = binf.tell() - 32
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if prevoffset < 0:
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prevoffset = 0
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binf.seek(prevoffset)
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record = binf.read(16)
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if not record:
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break
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while record[1] != '\x02' and prevoffset > 0:
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prevoffset = binf.tell() - 32
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if prevoffset < 0:
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prevoffset = 0
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binf.seek(prevoffset)
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record = binf.read(16)
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if record[1] == '\x02':
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records.appendleft(record)
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else:
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records.appendleft(get_next_text_record(binf))
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binf.seek(restoreoffset if restoreoffset > 0 else 0)
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elif myinput.lower() == 'q':
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break
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elif myinput.lower() == 'd':
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print(repr(records))
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print(repr(binf.tell()))
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else:
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records.append(get_next_text_record(binf))
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reverse = False
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skipnext = False
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try:
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while True:
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if not skipnext:
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newdata, delay = replay.get_output(reverse)
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skipnext = False
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reverse = False
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writeout(newdata)
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writeout('\x1b]0;[Time: {0}]\x07'.format(
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time.strftime('%m/%d %H:%M:%S', time.localtime(replay.laststamp))))
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sys.stdout.flush()
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select.select((sys.stdin,), (), (), 86400)
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myinput = sys.stdin.read()
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if myinput == '\x1b[C': # right
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continue
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elif myinput == '\x1b[D': # left
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writeout('\x1b[2J\x1b[;H')
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reverse = True
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continue
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elif myinput.lower() == 'q':
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break
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elif myinput.lower() == 'd':
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writeout('\x1b];{0}\x07'.format(replay.debuginfo()))
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sys.stdout.flush()
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select.select((sys.stdin,), (), (), 3200)
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skipnext = True
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else:
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continue
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except Exception:
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currfl = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
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fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, currfl ^ os.O_NONBLOCK)
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termios.tcsetattr(sys.stdin.fileno(), termios.TCSANOW, oldtcattr)
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writeout('\x1b[m')
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raise
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currfl = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
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fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, currfl ^ os.O_NONBLOCK)
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termios.tcsetattr(sys.stdin.fileno(), termios.TCSANOW, oldtcattr)
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sys.stdout.write('\x1b[m')
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writeout('\x1b[m')
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def get_next_text_record(binf):
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record = binf.read(16)
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while record and record[1] != '\x02':
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record = binf.read(16)
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return record
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def showrecords(records, txtf, binf):
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extradata = ''
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while records and records[0] and not extradata:
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record = records.popleft()
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recs = struct.unpack('!BBIHIBBH', record)
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offset = recs[2]
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size = recs[3]
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tstamp = recs[4]
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if recs[1] == 2:
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tstamp = time.strftime('%m/%d %H:%M:%S ', time.localtime(tstamp))
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txtf.seek(offset)
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currdata = txtf.read(size)
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if not records and not currdata.startswith('\x1b[2J') and '\x1b[2J' in currdata:
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currdata, extradata = currdata.split('\x1b[2J', 1)
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extradata = '\x1b[2J' + extradata
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sys.stdout.write(currdata)
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sys.stdout.write('\x1b]0;{0}\x07'.format(tstamp))
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sys.stdout.flush()
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return extradata
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if __name__ == '__main__':
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binfile = sys.argv[1]
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txtfile = sys.argv[2]
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main(binfile, txtfile)
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binfile = sys.argv[2]
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txtfile = sys.argv[1]
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main(txtfile, binfile)
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