snmpsimd.py 文件源码

def evaluateValue(self, oid, tag, value, **context):
        # Variation module reference
        if ':' in tag:
            modName, tag = tag[tag.index(':')+1:], tag[:tag.index(':')]
        else:
            modName = None

        if modName:
            if ('variationModules' in context and
                    modName in context['variationModules']):
                if 'dataValidation' in context:
                    return oid, tag, univ.Null
                else:
                    if context['setFlag']:
                        hexvalue = self.grammar.hexifyValue(context['origValue'])
                        if hexvalue is not None:
                            context['hexvalue'] = hexvalue
                            context['hextag'] = self.grammar.getTagByType(context['origValue']) + 'x'

                    # prepare agent and record contexts on first reference
                    (variationModule,
                     agentContexts,
                     recordContexts) = context['variationModules'][modName]
                    if context['dataFile'] not in agentContexts:
                        agentContexts[context['dataFile']] = {}
                    if context['dataFile'] not in recordContexts:
                        recordContexts[context['dataFile']] = {}
                    variationModule['agentContext'] = agentContexts[context['dataFile']]
                    recordContexts = recordContexts[context['dataFile']]
                    if oid not in recordContexts:
                        recordContexts[oid] = {}

                    variationModule['recordContext'] = recordContexts[oid]

                    # invoke variation module
                    oid, tag, value = variationModule['variate'](oid, tag, value, **context)
            else:
                raise SnmpsimError('Variation module "%s" referenced but not loaded\r\n' % modName)

        if not modName:
            if 'dataValidation' in context:
                snmprec.SnmprecRecord.evaluateValue(
                    self, oid, tag, value, **context
                )

            if (not context['nextFlag'] and not context['exactMatch'] or
                    context['setFlag']):
                return context['origOid'], tag, context['errorStatus']

        if not hasattr(value, 'tagSet'):  # not already a pyasn1 object
            return snmprec.SnmprecRecord.evaluateValue(
                       self, oid, tag, value, **context
                   )

        return oid, tag, value