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39e63f1358
Add a simple streaming parser for Logcat logs. At the moment, only the recent logcat format is supported.
67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
import logging
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from datetime import datetime
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from wa.utils.types import enum
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LogcatLogLevel = enum(['verbose', 'debug', 'info', 'warn', 'error', 'assert'], start=2)
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log_level_map = ''.join(n[0].upper() for n in LogcatLogLevel.names)
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logger = logging.getLogger('logcat')
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class LogcatEvent(object):
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__slots__ = ['timestamp', 'pid', 'tid', 'level', 'tag', 'message']
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def __init__(self, timestamp, pid, tid, level, tag, message):
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self.timestamp = timestamp
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self.pid = pid
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self.tid = pid
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self.level = level
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self.tag = tag
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self.message = message
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def __repr__(self):
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return '{} {} {} {} {}: {}'.format(
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self.timestamp, self.pid, self.tid,
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self.level.name.upper(), self.tag,
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self.message,
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)
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__str__ = __repr__
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class LogcatParser(object):
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def parse(self, filepath):
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with open(filepath) as fh:
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for line in fh:
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event = self.parse_line(line)
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if event:
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yield event
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def parse_line(self, line):
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line = line.strip()
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if not line or line.startswith('-') or ':' not in line:
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return None
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metadata, message = line.split(': ', 1)
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parts = metadata.split(None, 5)
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try:
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ts = ' '.join([parts.pop(0), parts.pop(0)])
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timestamp = datetime.strptime(ts, '%m-%d %H:%M:%S.%f').replace(year=datetime.now().year)
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pid = int(parts.pop(0))
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tid = int(parts.pop(0))
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level = LogcatLogLevel.levels[log_level_map.index(parts.pop(0))]
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tag = (parts.pop(0) if parts else '').strip()
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except Exception as e:
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message = 'Invalid metadata for line:\n\t{}\n\tgot: "{}"'
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logger.warning(message.format(line, e))
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return None
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return LogcatEvent(timestamp, pid, tid, level, tag, message)
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