102 lines
2.6 KiB
CoffeeScript
102 lines
2.6 KiB
CoffeeScript
config = require './config'
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db = require './db'
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getProfiles = (callback) ->
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db.memcached.get('profiles', (err, res) ->
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throw err if err
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if res
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callback(res)
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return
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db.profilesCollection.find().toArray((err, res) ->
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if err
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callback(err, res)
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return
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profiles = {}
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for p in res
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profiles[p['_id']] = p
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db.memcached.set('profiles', profiles, config.PROFILES_CACHE_DURATION)
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callback(profiles)
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)
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)
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getProfilesHash = (callback) ->
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db.memcached('profiles_hash', (err, res) ->
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if res
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callback(res)
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else
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getProfiles((profiles) ->
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hash = callback(calculateProfilesHash(profiles))
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db.memcached.set('profiles_hash', hash, config.PROFILES_CACHE_DURATION, (err, res) ->
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callback(hash)
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)
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)
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)
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calculateProfilesHash = (profiles) ->
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crypto = require('crypto')
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hash = crypto.createHash('md5').update(JSON.stringify(profiles)).digest('hex')
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return hash
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exports.findDeviceConfigurationDiscrepancy = (deviceId, profilesHash, callback) ->
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getProfiles((profiles) ->
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params = {'_tags' : 1}
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for p of profiles
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profile = profiles[p]
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for c in profile.configurations
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params[c.name] = 1
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db.devicesCollection.findOne({'_id' : deviceId}, params, (err, device) ->
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tags = device['_tags'] or []
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tags.push('default')
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deviceProfiles = []
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for t in tags
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if profiles[t]?
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deviceProfiles.push(profiles[t])
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combinedConfigurations = combineProfileConfigurations(deviceProfiles)
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discrepency = {}
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for c in combinedConfigurations
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if c.value != getDeviceParamFromPath(device, "#{c.name}._value")
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discrepency[c.name] = c.value
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if not profilesHash
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profilesHash = calculateProfilesHash(profiles)
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db.memcached.set('profiles_hash', profilesHash, config.PROFILES_CACHE_DURATION, (err, res) ->
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)
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db.memcached.set("#{deviceId}_profiles_hash", profilesHash, config.PROFILES_CACHE_DURATION, (err, res) ->
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callback(discrepency)
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)
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)
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)
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combineProfileConfigurations = (profiles) ->
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maxWeights = {}
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configurations = {}
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for p in profiles
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for c in p.configurations
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if not maxWeights[c.name]? or p.weight > maxWeights[c.name]
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configurations[c.name] = c
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maxWeights[c.name] = p.weight
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configurationsList = (configurations[c] for c of configurations)
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return configurationsList
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getDeviceParamFromPath = (device, paramPath) ->
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path = paramPath.split('.')
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ref = device
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for p in path
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ref = ref[p]
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return ref |