+from ._reader import (_Journal, NOP, APPEND, INVALIDATE,
+ LOCAL_ONLY, RUNTIME_ONLY, SYSTEM_ONLY)
+from . import id128 as _id128
+
+_MONOTONIC_CONVERTER = lambda x: datetime.timedelta(microseconds=float(x))
+_REALTIME_CONVERTER = lambda x: datetime.datetime.fromtimestamp(float(x)/1E6)
+DEFAULT_CONVERTERS = {
+ 'MESSAGE_ID': uuid.UUID,
+ 'PRIORITY': int,
+ 'LEADER': int,
+ 'SESSION_ID': int,
+ 'USERSPACE_USEC': int,
+ 'INITRD_USEC': int,
+ 'KERNEL_USEC': int,
+ '_UID': int,
+ '_GID': int,
+ '_PID': int,
+ 'SYSLOG_FACILITY': int,
+ 'SYSLOG_PID': int,
+ '_AUDIT_SESSION': int,
+ '_AUDIT_LOGINUID': int,
+ '_SYSTEMD_SESSION': int,
+ '_SYSTEMD_OWNER_UID': int,
+ 'CODE_LINE': int,
+ 'ERRNO': int,
+ 'EXIT_STATUS': int,
+ '_SOURCE_REALTIME_TIMESTAMP': _REALTIME_CONVERTER,
+ '__REALTIME_TIMESTAMP': _REALTIME_CONVERTER,
+ '_SOURCE_MONOTONIC_TIMESTAMP': _MONOTONIC_CONVERTER,
+ '__MONOTONIC_TIMESTAMP': _MONOTONIC_CONVERTER,
+ 'COREDUMP': bytes,
+ 'COREDUMP_PID': int,
+ 'COREDUMP_UID': int,
+ 'COREDUMP_GID': int,
+ 'COREDUMP_SESSION': int,
+ 'COREDUMP_SIGNAL': int,
+ 'COREDUMP_TIMESTAMP': _REALTIME_CONVERTER,
+}
+
+if sys.version_info >= (3,):
+ _convert_unicode = functools.partial(str, encoding='utf-8')
+else:
+ _convert_unicode = functools.partial(unicode, encoding='utf-8')
+
+class Journal(_Journal):
+ def __init__(self, converters=None, *args, **kwargs):
+ super(Journal, self).__init__(*args, **kwargs)
+ if sys.version_info >= (3,3):
+ self.converters = ChainMap()
+ if converters is not None:
+ self.converters.maps.append(converters)
+ self.converters.maps.append(DEFAULT_CONVERTERS)
+ else:
+ # suitable fallback, e.g.
+ self.converters = DEFAULT_CONVERTERS.copy()
+ if converters is not None:
+ self.converters.update(converters)
+
+ def _convert_field(self, key, value):
+ try:
+ result = self.converters[key](value)
+ except:
+ # Default conversion in unicode
+ try:
+ result = _convert_unicode(value)
+ except:
+ # Leave in default bytes
+ result = value
+ return result
+
+ def _convert_entry(self, entry):
+ result = {}
+ for key, value in entry.items():
+ if isinstance(value, list):
+ result[key] = [self._convert_field(key, val) for val in value]
+ else:
+ result[key] = self._convert_field(key, value)
+ return result
+
+ def add_match(self, *args, **kwargs):
+ args = list(args)
+ args.extend(_make_line(key, val) for key, val in kwargs.items())
+ for arg in args:
+ super(Journal, self).add_match(arg)
+
+ def get_next(self, skip=1):
+ return self._convert_entry(
+ super(Journal, self).get_next(skip))
+
+ def query_unique(self, key):
+ return set(self._convert_field(key, value)
+ for value in super(Journal, self).query_unique(key))
+
+ def seek_realtime(self, timestamp):
+ if isinstance(timestamp, datetime.datetime):
+ timestamp = float(timestamp.strftime("%s.%f"))
+ return super(Journal, self).seek_realtime(timestamp)
+
+ def seek_monotonic(self, timestamp, bootid=None):
+ if isinstance(timestamp, datetime.timedelta):
+ timestamp = timestamp.totalseconds()
+ return super(Journal, self).seek_monotonic(timestamp, bootid)
+
+ def log_level(self, level):
+ """Sets maximum log level by setting matches for PRIORITY."""
+ if 0 <= level <= 7:
+ for i in range(level+1):
+ self.add_match(PRIORITY="%s" % i)
+ else:
+ raise ValueError("Log level must be 0 <= level <= 7")
+
+ def this_boot(self):
+ """Add match for _BOOT_ID equal to current boot ID."""
+ self.add_match(_BOOT_ID=_id128.get_boot().hex)
+
+ def this_machine(self):
+ """Add match for _MACHINE_ID equal to the ID of this machine."""
+ self.add_match(_MACHINE_ID=_id128.get_machine().hex)