# coding=utf8 # Copyright 2014 IBM Corporation # Copyright 2015 Lenovo # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """This module provides access to SDR offered by a BMC This data is common between 'sensors' and 'inventory' modules since SDR is both used to enumerate sensors for sensor commands and FRU ids for FRU commands For now, we will not offer persistent SDR caching as we do in xCAT's IPMI code. Will see if it is adequate to advocate for high object reuse in a persistent process for the moment. Focus is at least initially on the aspects that make the most sense for a remote client to care about. For example, smbus information is being skipped for now """ import math import os import random import string import struct import weakref import six import pyghmi.constants as const import pyghmi.exceptions as exc TYPE_UNKNOWN = 0 TYPE_SENSOR = 1 TYPE_FRU = 2 shared_sdrs = {} oem_type_offsets = { 343: { # Intel 149: { # Cascade Lake-AP 0x7a: { 0xda: { 3: { 'desc': 'Allowed', 'severity': const.Health.Ok, }, 4: { 'desc': 'Restricted', 'severity': const.Health.Ok, }, 5: { 'desc': 'Disabled', 'severity': const.Health.Ok, }, }, }, }, }, } def ones_complement(value, bits): # utility function to help with the large amount of 2s # complement prevalent in ipmi spec signbit = 0b1 << (bits - 1) if value & signbit: # if negative, subtract 1, then take 1s # complement given bits width return 0 - (value ^ ((0b1 << bits) - 1)) else: return value def twos_complement(value, bits): # utility function to help with the large amount of 2s # complement prevalent in ipmi spec signbit = 0b1 << (bits - 1) if value & signbit: # if negative, subtract 1, then take 1s # complement given bits width return 0 - ((value - 1) ^ ((0b1 << bits) - 1)) else: return value unit_types = { # table 43-15 'sensor unit type codes' 0: '', 1: '°C', 2: '°F', 3: 'K', 4: 'V', 5: 'A', 6: 'W', 7: 'J', 8: 'C', 9: 'VA', 10: 'nt', 11: 'lm', 12: 'lx', 13: 'cd', 14: 'kPa', 15: 'PSI', 16: 'N', 17: 'CFM', 18: 'RPM', 19: 'Hz', 20: 'μs', 21: 'ms', 22: 's', 23: 'min', 24: 'hr', 25: 'd', 26: 'week(s)', 27: 'mil', 28: 'inches', 29: 'ft', 30: 'cu in', 31: 'cu feet', 32: 'mm', 33: 'cm', 34: 'm', 35: 'cu cm', 36: 'cu m', 37: 'L', 38: 'fl. oz.', 39: 'radians', 40: 'steradians', 41: 'revolutions', 42: 'cycles', 43: 'g', 44: 'ounce', 45: 'lb', 46: 'ft-lb', 47: 'oz-in', 48: 'gauss', 49: 'gilberts', 50: 'henry', 51: 'millihenry', 52: 'farad', 53: 'microfarad', 54: 'ohms', 55: 'siemens', 56: 'mole', 57: 'becquerel', 58: 'ppm', 60: 'dB', 61: 'dBA', 62: 'dBC', 63: 'Gy', 64: 'sievert', 65: 'color temp deg K', 66: 'bit', 67: 'kb', 68: 'mb', 69: 'gb', 70: 'byte', 71: 'kB', 72: 'mB', 73: 'gB', 74: 'word', 75: 'dword', 76: 'qword', 77: 'line', 78: 'hit', 79: 'miss', 80: 'retry', 81: 'reset', 82: 'overrun/overflow', 83: 'underrun', 84: 'collision', 85: 'packets', 86: 'messages', 87: 'characters', 88: 'error', 89: 'uncorrectable error', 90: 'correctable error', 91: 'fatal error', 92: 'grams', } sensor_rates = { 0: '', 1: ' per us', 2: ' per ms', 3: ' per s', 4: ' per minute', 5: ' per hour', 6: ' per day', } class SensorReading(object): """Representation of the state of a sensor. It is initialized by pyghmi internally, it does not make sense for a developer to create one of these objects directly. It provides the following properties: name: UTF-8 string describing the sensor units: UTF-8 string describing the units of the sensor (if numeric) value: Value of the sensor if numeric imprecision: The amount by which the actual measured value may deviate from 'value' due to limitations in the resolution of the given sensor. """ def __init__(self, reading, suffix): self.broken_sensor_ids = {} self.health = const.Health.Ok self.type = reading['type'] self.value = None self.imprecision = None self.states = [] self.state_ids = [] self.unavailable = 0 try: self.health = reading['health'] self.states = reading['states'] self.state_ids = reading['state_ids'] self.value = reading['value'] self.imprecision = reading['imprecision'] except KeyError: pass if 'unavailable' in reading: self.unavailable = 1 self.units = suffix self.name = reading['name'] def __repr__(self): return repr({ 'value': self.value, 'states': self.states, 'state_ids': self.state_ids, 'units': self.units, 'imprecision': self.imprecision, 'name': self.name, 'type': self.type, 'unavailable': self.unavailable, 'health': self.health }) def simplestring(self): """Return a summary string of the reading. This is intended as a sampling of how the data could be presented by a UI. It's intended to help a developer understand the relation between the attributes of a sensor reading if it is not quite clear """ repr = self.name + ": " if self.value is not None: repr += str(self.value) repr += " ± " + str(self.imprecision) repr += self.units for state in self.states: repr += state + "," if self.health >= const.Health.Failed: repr += '(Failed)' elif self.health >= const.Health.Critical: repr += '(Critical)' elif self.health >= const.Health.Warning: repr += '(Warning)' return repr class SDREntry(object): """Represent a single entry in the IPMI SDR. This is created and consumed by pyghmi internally, there is no reason for external code to pay attention to this class. """ def __init__(self, entrybytes, event_consts, reportunsupported=False, mfg_id=0, prod_id=0): self.mfg_id = mfg_id self.prod_id = prod_id self.event_consts = event_consts # ignore record id for now, we only care about the sensor number for # moment self.readable = True self.reportunsupported = reportunsupported if entrybytes[2] != 0x51: # only recognize '1.5', the only version defined at time of writing raise NotImplementedError self.rectype = entrybytes[3] self.linearization = None # most important to get going are 1, 2, and 11 self.sdrtype = TYPE_SENSOR # assume a sensor if self.rectype == 1: # full sdr self.full_decode(entrybytes[5:]) elif self.rectype == 2: # full sdr self.compact_decode(entrybytes[5:]) elif self.rectype == 3: # event only self.eventonly_decode(entrybytes[5:]) elif self.rectype == 8: # entity association self.association_decode(entrybytes[5:]) elif self.rectype == 0x11: # FRU locator self.fru_decode(entrybytes[5:]) elif self.rectype == 0x12: # Management controller self.mclocate_decode(entrybytes[5:]) elif self.rectype == 0xc0: # OEM format self.sdrtype = TYPE_UNKNOWN # assume undefined self.oem_decode(entrybytes[5:]) elif self.reportunsupported: raise NotImplementedError else: self.sdrtype = TYPE_UNKNOWN @property def name(self): if self.sdrtype == TYPE_SENSOR: return self.sensor_name elif self.sdrtype == TYPE_FRU: return self.fru_name else: return "UNKNOWN" def oem_decode(self, entry): mfgid = entry[0] + (entry[1] << 8) + (entry[2] << 16) if self.reportunsupported: raise NotImplementedError("No support for mfgid %X" % mfgid) def mclocate_decode(self, entry): # For now, we don't have use for MC locator records # we'll ignore them at the moment self.sdrtype = TYPE_UNKNOWN pass def fru_decode(self, entry): # table 43-7 FRU Device Locator self.sdrtype = TYPE_FRU self.fru_name = self.tlv_decode(entry[10], entry[11:]) self.fru_number = entry[1] self.fru_logical = (entry[2] & 0b10000000) == 0b10000000 # 0x8 to 0x10.. 0 unspecified except on 0x10, 1 is dimm self.fru_type_and_modifier = (entry[5] << 8) + entry[6] def association_decode(self, entry): # table 43-4 Entity Associaition Record # TODO(jbjohnso): actually represent this data self.sdrtype = TYPE_UNKNOWN def eventonly_decode(self, entry): # table 43-3 event_only sensor record self._common_decode(entry) self.sensor_name = self.tlv_decode(entry[11], entry[12:]) self.readable = False def compact_decode(self, entry): # table 43-2 compact sensor record self._common_decode(entry) self.sensor_name = self.tlv_decode(entry[26], entry[27:]) def assert_trap_value(self, offset): trapval = (self.sensor_type_number << 16) + (self.reading_type << 8) return trapval + offset def _common_decode(self, entry): # event only, compact and full are very similar # this function handles the common aspects of compact and full # offsets from spec, minus 6 self.has_thresholds = False self.sensor_owner = entry[0] self.sensor_lun = entry[1] & 0x03 self.sensor_number = entry[2] self.entity = self.event_consts.entity_ids.get( entry[3], 'Unknown entity {0}'.format(entry[3])) if self.rectype == 3: self.sensor_type_number = entry[5] self.reading_type = entry[6] # table 42-1 else: self.sensor_type_number = entry[7] self.reading_type = entry[8] # table 42-1 if self.rectype == 1 and entry[6] & 0b00001100: self.has_thresholds = True try: self.sensor_type = self.event_consts.sensor_type_codes[ self.sensor_type_number] except KeyError: self.sensor_type = "UNKNOWN type " + str(self.sensor_type_number) if self.rectype == 3: return # 0: unspecified # 1: generic threshold based # 0x6f: discrete sensor-specific from table 42-3, sensor offsets # all others per table 42-2, generic discrete # numeric format is one of: # 0 - unsigned, 1 - 1s complement, 2 - 2s complement, 3 - ignore number # compact records are supposed to always write it as '3', presumably # to allow for the concept of a compact record with a numeric format # even though numerics are not allowed today. Some implementations # violate the spec and do something other than 3 today. Tolerate # the violation under the assumption that things are not so hard up # that there will ever be a need for compact sensors supporting numeric # values if self.rectype == 2: self.numeric_format = 3 else: self.numeric_format = (entry[15] & 0b11000000) >> 6 self.sensor_rate = sensor_rates[(entry[15] & 0b111000) >> 3] self.unit_mod = "" if (entry[15] & 0b110) == 0b10: # unit1 by unit2 self.unit_mod = "/" elif (entry[15] & 0b110) == 0b100: # combine the units by multiplying, SI nomenclature is either spac # or hyphen, so go with space self.unit_mod = " " self.percent = '' if entry[15] & 1 == 1: self.percent = '% ' if self.sensor_type_number == 0xb: if self.unit_mod == '': if entry[16] == 6: self.sensor_type = 'Power' elif self.unit_mod == ' ': if entry[16] == 6 and entry[17] in (22, 23, 24): self.sensor_type = 'Energy' self.baseunit = unit_types[entry[16]] self.modunit = unit_types[entry[17]] self.unit_suffix = self.percent + self.baseunit + self.unit_mod + \ self.modunit def full_decode(self, entry): # offsets are table from spec, minus 6 # TODO(jbjohnso): table 43-13, put in constants to interpret entry[3] self._common_decode(entry) # now must extract the formula data to transform values # entry[18 to entry[24]. # if not linear, must use get sensor reading factors # TODO(jbjohnso): the various other values self.sensor_name = self.tlv_decode(entry[42], entry[43:]) self.linearization = entry[18] & 0b1111111 if self.linearization <= 11: # the enumuration of linear sensors goes to 11, # static formula parameters are applicable, decode them # if 0x70, then the sesor reading will have to get the # factors on the fly. # the formula could apply if we bother with nominal # reading interpretation self.decode_formula(entry[19:25]) def _decode_state(self, state): mapping = self.event_consts.generic_type_offsets try: if self.reading_type in mapping: desc = mapping[self.reading_type][state]['desc'] health = mapping[self.reading_type][state]['severity'] elif self.reading_type == 0x6f: mapping = self.event_consts.sensor_type_offsets desc = mapping[self.sensor_type_number][state]['desc'] health = mapping[self.sensor_type_number][state]['severity'] elif self.reading_type >= 0x70 and self.reading_type <= 0x7f: sensedata = oem_type_offsets[self.mfg_id][self.prod_id][ self.reading_type][self.sensor_type_number][state] desc = sensedata['desc'] health = sensedata['severity'] else: desc = "Unknown state %d" % state health = const.Health.Ok except KeyError: desc = "Unknown state %d for reading type %d/sensor type %d" % ( state, self.reading_type, self.sensor_type_number) health = const.Health.Ok return desc, health def decode_sensor_reading(self, ipmicmd, reading): numeric = None output = { 'name': self.sensor_name, 'type': self.sensor_type, 'id': self.sensor_number, } if reading[1] & 0b100000 or not reading[1] & 0b1000000: output['unavailable'] = 1 return SensorReading(output, self.unit_suffix) if self.numeric_format == 2: numeric = twos_complement(reading[0], 8) elif self.numeric_format == 1: numeric = ones_complement(reading[0], 8) elif self.numeric_format == 0 and (self.has_thresholds or self.reading_type == 1): numeric = reading[0] discrete = True if numeric is not None: lowerbound = numeric - (0.5 + (self.tolerance / 2.0)) upperbound = numeric + (0.5 + (self.tolerance / 2.0)) lowerbound = self.decode_value(ipmicmd, lowerbound) upperbound = self.decode_value(ipmicmd, upperbound) output['value'] = (lowerbound + upperbound) / 2.0 output['imprecision'] = output['value'] - lowerbound discrete = False upper = 'upper' lower = 'lower' if self.linearization == 7: # if the formula is 1/x, then the intuitive sense of upper and # lower are backwards upper = 'lower' lower = 'upper' output['states'] = [] output['state_ids'] = [] output['health'] = const.Health.Ok if discrete: for state in range(8): if reading[2] & (0b1 << state): statedesc, health = self._decode_state(state) output['health'] |= health output['states'].append(statedesc) output['state_ids'].append(self.assert_trap_value(state)) if len(reading) > 3: for state in range(7): if reading[3] & (0b1 << state): statedesc, health = self._decode_state(state + 8) output['health'] |= health output['states'].append(statedesc) output['state_ids'].append( self.assert_trap_value(state + 8)) else: if reading[2] & 0b1: output['health'] |= const.Health.Warning output['states'].append(lower + " non-critical threshold") output['state_ids'].append(self.assert_trap_value(1)) if reading[2] & 0b10: output['health'] |= const.Health.Critical output['states'].append(lower + " critical threshold") output['state_ids'].append(self.assert_trap_value(2)) if reading[2] & 0b100: output['health'] |= const.Health.Failed output['states'].append(lower + " non-recoverable threshold") output['state_ids'].append(self.assert_trap_value(3)) if reading[2] & 0b1000: output['health'] |= const.Health.Warning output['states'].append(upper + " non-critical threshold") output['state_ids'].append(self.assert_trap_value(4)) if reading[2] & 0b10000: output['health'] |= const.Health.Critical output['states'].append(upper + " critical threshold") output['state_ids'].append(self.assert_trap_value(5)) if reading[2] & 0b100000: output['health'] |= const.Health.Failed output['states'].append(upper + " non-recoverable threshold") output['state_ids'].append(self.assert_trap_value(6)) return SensorReading(output, self.unit_suffix) def _set_tmp_formula(self, ipmicmd, value): rsp = ipmicmd.raw_command(netfn=4, command=0x23, data=(self.sensor_number, value)) # skip next reading field, not used in on-demand situation self.decode_formula(rsp['data'][1:]) def decode_value(self, ipmicmd, value): # Take the input value and return meaningful value linearization = self.linearization if linearization > 11: # direct calling code to get factors # for now, we will get the factors on demand # the facility is engineered such that at construction # time the entire BMC table should be fetchable in a reasonable # fashion. However for now opt for retrieving rows as needed # rather than tracking all that information for a relatively # rare behavior self._set_tmp_formula(ipmicmd, value) linearization = 0 # time to compute the pre-linearization value. decoded = float((value * self.m + self.b) * (10 ** self.resultexponent)) if linearization == 0: return decoded elif linearization == 1: return math.log(decoded) elif linearization == 2: return math.log(decoded, 10) elif linearization == 3: return math.log(decoded, 2) elif linearization == 4: return math.exp(decoded) elif linearization == 5: return 10 ** decoded elif linearization == 6: return 2 ** decoded elif linearization == 7: return 1 / decoded elif linearization == 8: return decoded ** 2 elif linearization == 9: return decoded ** 3 elif linearization == 10: return math.sqrt(decoded) elif linearization == 11: return decoded ** (1.0 / 3) else: raise NotImplementedError def decode_formula(self, entry): self.m = twos_complement(entry[0] + ((entry[1] & 0b11000000) << 2), 10) self.tolerance = entry[1] & 0b111111 self.b = twos_complement(entry[2] + ((entry[3] & 0b11000000) << 2), 10) self.accuracy = (entry[3] & 0b111111) + (entry[4] & 0b11110000) << 2 self.accuracyexp = (entry[4] & 0b1100) >> 2 self.direction = entry[4] & 0b11 # 0 = n/a, 1 = input, 2 = output self.resultexponent = twos_complement((entry[5] & 0b11110000) >> 4, 4) bexponent = twos_complement(entry[5] & 0b1111, 4) # might as well do the math to 'b' now rather than wait for later self.b = self.b * (10**bexponent) def tlv_decode(self, tlv, data): # Per IPMI 'type/length byte format ipmitype = (tlv & 0b11000000) >> 6 if not len(data): return "" if ipmitype == 0: # Unicode per 43.15 in ipmi 2.0 spec # the spec is not specific about encoding, assuming utf8 return six.text_type(struct.pack("%dB" % len(data), *data), "utf_8") elif ipmitype == 1: # BCD '+' tmpl = "%02X" * len(data) tstr = tmpl % tuple(data) tstr = tstr.replace("A", " ").replace("B", "-").replace("C", ".") return tstr.replace("D", ":").replace("E", ",").replace("F", "_") elif ipmitype == 2: # 6 bit ascii, start at 0x20 # the ordering is very peculiar and is best understood from # IPMI SPEC "6-bit packed ascii example tstr = "" while len(data) >= 3: # the packing only works with 3 byte chunks tstr += chr((data[0] & 0b111111) + 0x20) tstr += chr(((data[1] & 0b1111) << 2) + (data[0] >> 6) + 0x20) tstr += chr(((data[2] & 0b11) << 4) + (data[1] >> 4) + 0x20) tstr += chr((data[2] >> 2) + 0x20) if not isinstance(tstr, str): tstr = tstr.decode('utf-8') return tstr elif ipmitype == 3: # ACSII+LATIN1 ret = struct.pack("%dB" % len(data), *data) if not isinstance(ret, str): ret = ret.decode('utf-8') return ret class SDR(object): """Examine the state of sensors managed by a BMC Presents the data from sensor read commands as directed by the SDR in a reasonable format. This module is used by the command module, and is not intended for consumption by external code directly :param ipmicmd: A Command class object """ def __init__(self, ipmicmd, cachedir=None): self.ipmicmd = weakref.proxy(ipmicmd) self.sensors = {} self.fru = {} self.cachedir = cachedir self.read_info() def read_info(self): # first, we want to know the device id rsp = self.ipmicmd.xraw_command(netfn=6, command=1) rsp['data'] = bytearray(rsp['data']) self.device_id = rsp['data'][0] self.device_rev = rsp['data'][1] & 0b111 # Going to ignore device available until get sdr command # since that provides usefully distinct state and this does not self.fw_major = rsp['data'][2] & 0b1111111 self.fw_minor = "%02X" % rsp['data'][3] # BCD encoding, oddly enough self.ipmiversion = rsp['data'][4] # 51h = 1.5, 02h = 2.0 self.mfg_id = (rsp['data'][8] << 16) + (rsp['data'][7] << 8) + \ rsp['data'][6] self.prod_id = (rsp['data'][10] << 8) + rsp['data'][9] if len(rsp['data']) > 11: self.aux_fw = self.decode_aux(rsp['data'][11:15]) if rsp['data'][1] & 0b10000000 and rsp['data'][5] & 0b10 == 0: # The device has device sdrs, also does not support SDR repository # device, so we are meant to use an alternative mechanism to get # SDR data if rsp['data'][5] & 1: # The device has sensor device support, so in theory we should # be able to proceed # However at the moment, we haven't done so raise NotImplementedError return # We have Device SDR, without SDR Repository device, but # also without sensor device support, no idea how to # continue self.get_sdr() def get_sdr_reservation(self): rsp = self.ipmicmd.raw_command(netfn=0x0a, command=0x22) if rsp['code'] != 0: raise exc.IpmiException(rsp['error']) return rsp['data'][0] + (rsp['data'][1] << 8) def get_sdr(self): repinfo = self.ipmicmd.xraw_command(netfn=0x0a, command=0x20) repinfo['data'] = bytearray(repinfo['data']) if (repinfo['data'][0] != 0x51): # we only understand SDR version 51h, the only version defined # at time of this writing raise NotImplementedError # NOTE(jbjohnso): we actually don't need to care about 'numrecords' # since FFFF marks the end explicitly # numrecords = (rsp['data'][2] << 8) + rsp['data'][1] # NOTE(jbjohnso): don't care about 'free space' at the moment # NOTE(jbjohnso): most recent timstamp data for add and erase could be # handy to detect cache staleness, but for now will assume invariant # over life of session # NOTE(jbjohnso): not looking to support the various options in op # support, ignore those for now, reservation if some BMCs can't read # full SDR in one slurp modtime = struct.unpack('!Q', bytes(repinfo['data'][5:13]))[0] recid = 0 rsvid = 0 # partial 'get sdr' will require this offset = 0 size = 0xff chunksize = 128 try: csdrs = shared_sdrs[ (self.fw_major, self.fw_minor, self.mfg_id, self.prod_id, self.device_id, modtime)] self.sensors = csdrs['sensors'] self.fru = csdrs['fru'] return except KeyError: pass cachefilename = None self.broken_sensor_ids = {} if self.cachedir: cachefilename = 'sdrcache-2.{0}.{1}.{2}.{3}.{4}.{5}'.format( self.mfg_id, self.prod_id, self.device_id, self.fw_major, self.fw_minor, modtime) cachefilename = os.path.join(self.cachedir, cachefilename) if cachefilename and os.path.isfile(cachefilename): with open(cachefilename, 'rb') as cfile: csdrlen = cfile.read(2) while csdrlen: csdrlen = struct.unpack('!H', csdrlen)[0] self.add_sdr(cfile.read(csdrlen)) csdrlen = cfile.read(2) for sid in self.broken_sensor_ids: try: del self.sensors[sid] except KeyError: pass shared_sdrs[ (self.fw_major, self.fw_minor, self.mfg_id, self.prod_id, self.device_id, modtime)] = { 'sensors': self.sensors, 'fru': self.fru, } return sdrraw = [] if cachefilename else None while recid != 0xffff: # per 33.12 Get SDR command, 0xffff marks end newrecid = 0 currlen = 0 sdrdata = bytearray() while True: # loop until SDR fetched wholly if size != 0xff and rsvid == 0: rsvid = self.get_sdr_reservation() rqdata = [rsvid & 0xff, rsvid >> 8, recid & 0xff, recid >> 8, offset, size] sdrrec = self.ipmicmd.raw_command(netfn=0x0a, command=0x23, data=rqdata) if sdrrec['code'] == 0xca: if size == 0xff: # get just 5 to get header to know length size = 5 elif size > 5: size //= 2 # push things over such that it's less # likely to be just 1 short of a read # and incur a whole new request size += 2 chunksize = size continue if sdrrec['code'] == 0xc5: # need a new reservation id rsvid = 0 continue if sdrrec['code'] != 0: raise exc.IpmiException(sdrrec['error']) if newrecid == 0: newrecid = (sdrrec['data'][1] << 8) + sdrrec['data'][0] if currlen == 0: currlen = sdrrec['data'][6] + 5 # compensate for header sdrdata.extend(sdrrec['data'][2:]) # determine next offset to use based on current offset and the # size used last time. offset += size if offset >= currlen: break if size == 5 and offset == 5: # bump up size after header retrieval size = chunksize if (offset + size) > currlen: size = currlen - offset self.add_sdr(sdrdata) if sdrraw is not None: sdrraw.append(bytes(sdrdata)) offset = 0 if size != 0xff: size = 5 if newrecid == recid: raise exc.BmcErrorException("Incorrect SDR record id from BMC") recid = newrecid for sid in self.broken_sensor_ids: try: del self.sensors[sid] except KeyError: pass shared_sdrs[(self.fw_major, self.fw_minor, self.mfg_id, self.prod_id, self.device_id, modtime)] = { 'sensors': self.sensors, 'fru': self.fru, } if cachefilename: suffix = ''.join( random.choice(string.ascii_lowercase) for _ in range(12)) with open(cachefilename + '.' + suffix, 'wb') as cfile: for csdr in sdrraw: cfile.write(struct.pack('!H', len(csdr))) cfile.write(csdr) os.rename(cachefilename + '.' + suffix, cachefilename) def get_sensor_numbers(self): for number in self.sensors: if self.sensors[number].readable: yield number def make_sdr_entry(self, sdrbytes): return SDREntry(sdrbytes, self.ipmicmd.get_event_constants(), False, self.mfg_id, self.prod_id) def add_sdr(self, sdrbytes): if not isinstance(sdrbytes[0], int): sdrbytes = bytearray(sdrbytes) newent = self.make_sdr_entry(sdrbytes) if newent.sdrtype == TYPE_SENSOR: id = '{0}.{1}.{2}'.format( newent.sensor_owner, newent.sensor_number, newent.sensor_lun) if id in self.sensors: self.broken_sensor_ids[id] = True return self.sensors[id] = newent elif newent.sdrtype == TYPE_FRU: id = newent.fru_number if id in self.fru: self.broken_sensor_ids[id] = True return self.fru[id] = newent def decode_aux(self, auxdata): # This is where manufacturers can add their own # decode information return "".join(hex(x) for x in auxdata)