- self.default_call = functools.partial(unicode, encoding='utf-8')
- self.call_dict = {
- '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': lambda x: datetime.datetime.fromtimestamp(float(x)/1E6),
- '__REALTIME_TIMESTAMP': lambda x: datetime.datetime.fromtimestamp(float(x)/1E6),
- '_SOURCE_MONOTONIC_TIMESTAMP': lambda x: datetime.timedelta(microseconds=float(x)),
- '__MONOTONIC_TIMESTAMP': lambda x: datetime.timedelta(microseconds=float(x)),
- 'COREDUMP_PID': int,
- 'COREDUMP_UID': int,
- 'COREDUMP_GID': int,
- 'COREDUMP_SESSION': int,
- 'COREDUMP_SIGNAL': int,
- 'COREDUMP_TIMESTAMP': lambda x: datetime.datetime.fromtimestamp(float(x)/1E6),
- }
- if sys.version_info[0] >= 3:
- self.call_dict['COREDUMP'] = bytes
+ self.converters = DEFAULT_CONVERTERS.copy()
+ if converters is not None:
+ self.converters.update(converters)
+
+ def _convert_field(self, key, value):
+ """Convert value using self.converters[key]
+
+ If `key` is not present in self.converters, a standard unicode
+ decoding will be attempted. If the conversion (either
+ key-specific or the default one) fails with a ValueError, the
+ original bytes object will be returned.
+ """
+ convert = self.converters.get(key, bytes.decode)
+ try:
+ return convert(value)
+ except ValueError:
+ # Leave in default bytes
+ return value
+
+ def _convert_entry(self, entry):
+ """Convert entire journal entry utilising _covert_field"""
+ 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):
+ """Add one or more matches to the filter journal log entries.
+ All matches of different field are combined in a logical AND,
+ and matches of the same field are automatically combined in a
+ logical OR.
+ Matches can be passed as strings of form "FIELD=value", or
+ keyword arguments FIELD="value".
+ """
+ args = list(args)
+ args.extend(_make_line(key, val) for key, val in kwargs.items())
+ for arg in args:
+ super(Reader, self).add_match(arg)
+
+ def get_next(self, skip=1):
+ """Return the next log entry as a dictionary of fields.
+
+ Optional skip value will return the `skip`\-th log entry.
+
+ Entries will be processed with converters specified during
+ Reader creation.
+ """
+ return self._convert_entry(
+ super(Reader, self).get_next(skip))
+
+ def query_unique(self, field):
+ """Return unique values appearing in the journal for given `field`.
+
+ Note this does not respect any journal matches.
+
+ Entries will be processed with converters specified during
+ Reader creation.
+ """
+ return set(self._convert_field(field, value)
+ for value in super(Reader, self).query_unique(field))
+
+ def wait(self, timeout=None):
+ """Wait for a change in the journal. `timeout` is the maximum
+ time in seconds to wait, or None, to wait forever.
+
+ Returns one of NOP (no change), APPEND (new entries have been
+ added to the end of the journal), or INVALIDATE (journal files
+ have been added or removed).
+ """
+ us = -1 if timeout is None else int(timeout * 1000000)
+ return super(Reader, self).wait(timeout)
+
+ def seek_realtime(self, realtime):
+ """Seek to a matching journal entry nearest to `realtime` time.
+
+ Argument `realtime` must be either an integer unix timestamp
+ or datetime.datetime instance.
+ """
+ if isinstance(realtime, _datetime.datetime):
+ realtime = float(realtime.strftime("%s.%f")) * 1000000
+ return super(Reader, self).seek_realtime(int(realtime))
+
+ def seek_monotonic(self, monotonic, bootid=None):
+ """Seek to a matching journal entry nearest to `monotonic` time.
+
+ Argument `monotonic` is a timestamp from boot in either
+ seconds or a datetime.timedelta instance. Argument `bootid`
+ is a string or UUID representing which boot the monotonic time
+ is reference to. Defaults to current bootid.
+ """
+ if isinstance(monotonic, _datetime.timedelta):
+ monotonic = monotonic.totalseconds()
+ monotonic = int(monotonic * 1000000)
+ if isinstance(bootid, _uuid.UUID):
+ bootid = bootid.get_hex()
+ return super(Reader, self).seek_monotonic(monotonic, bootid)
+
+ def log_level(self, level):
+ """Set maximum log `level` by setting matches for PRIORITY.
+ """
+ if 0 <= level <= 7:
+ for i in range(level+1):
+ self.add_match(PRIORITY="%d" % i)
+ else:
+ raise ValueError("Log level must be 0 <= level <= 7")
+
+ def messageid_match(self, messageid):
+ """Add match for log entries with specified `messageid`.
+
+ `messageid` can be string of hexadicimal digits or a UUID
+ instance. Standard message IDs can be found in systemd.id128.
+
+ Equivalent to add_match(MESSAGE_ID=`messageid`).
+ """
+ if isinstance(messageid, _uuid.UUID):
+ messageid = messageid.get_hex()
+ self.add_match(MESSAGE_ID=messageid)
+
+ def this_boot(self, bootid=None):
+ """Add match for _BOOT_ID equal to current boot ID or the specified boot ID.
+
+ If specified, bootid should be either a UUID or a 32 digit hex number.
+
+ Equivalent to add_match(_BOOT_ID='bootid').
+ """
+ if bootid is None:
+ bootid = _id128.get_boot().hex
+ else:
+ bootid = getattr(bootid, 'hex', bootid)
+ self.add_match(_BOOT_ID=bootid)
+
+ def this_machine(self, machineid=None):
+ """Add match for _MACHINE_ID equal to the ID of this machine.
+
+ If specified, machineid should be either a UUID or a 32 digit hex number.
+
+ Equivalent to add_match(_MACHINE_ID='machineid').
+ """
+ if machineid is None:
+ machineid = _id128.get_machine().hex