private void CleanUpUnusedFiles(ChannelSubscriptions channelSubscriptions, Playlist playlist)
{
_logger.WriteTimestampedMessage("Cleaning up unused files");
ReportProgress(0, 30, "Cleaning up files...");
// 1. channel data
try
{
CleanUpUnsubscribedChannelFiles(channelSubscriptions);
}
catch (Exception ex)
{
_logger.WriteError(ex);
}
ReportProgress(50, 40);
// 2. assets
HashSet <string> playlistAssetsToKeep = GetAssetsToKeep(playlist);
try
{
CleanUpAssetFolder(playlistAssetsToKeep);
}
catch (Exception ex)
{
_logger.WriteError(ex);
}
ReportProgress(100, 50);
}
/// <summary>
/// Executes LogExchanger steps.
/// </summary>
public void Execute()
{
if (!_bGlobalsSet)
{
return;
}
if (!FileAccessRights())
{
return;
}
if (!TryRecreateDirectoryStructureIfNecessary())
{
return;
}
ChannelSubscriptions channelSubscriptions = GetChannelSubscriptions();
_logger.WriteMessage("GetChannelSubscriptions returned.");
if (channelSubscriptions == null)
{
return; // log exchanger cannot run without channel subscriptions
}
// lock and load raw logs.
bool bRawLogsExist = LoadRawAll();
TimeSpanWrapperClass dateTimeDiff = GetDateTimeDiff();
foreach (ChannelSubscription channelSubscription in channelSubscriptions.SubscriptionSet)
{
if (!AggregateAndUploadNonAdvertSpecificLogs(channelSubscription.ChannelID, channelSubscription.GetGUIDSuffix(), dateTimeDiff, bRawLogsExist))
{
return;
}
}
// adverts: channel 0
if (!AggregateAndUploadNonAdvertSpecificLogs(0, "", dateTimeDiff, bRawLogsExist))
{
return;
}
// advert-specific logs (adverts - channel weighting calculations)
AggregateAndUploadAdvertSpecificLogs(channelSubscriptions, dateTimeDiff, bRawLogsExist);
// if raw files can't be truncated they will be reprocessed.
if (!TruncateRawFiles())
{
ReleaseRawFiles();
}
TryUploadTruncateReleaseUsageCountFile(bRawLogsExist);
_userDataMarshallerStreamerClient.Dispose();
}
private static void GetNonAdvertisingPlaylist(ChannelData channelData,
string password,
Playlist playlist,
DemographicRangeVerifier demographicRangeVerifier,
ChannelSubscriptions channelSubscriptions,
DateTime now,
float defaultDisplayDuration,
Logger logger)
{
//
// calculate content playlist
//
// calculate average play times
var avgPlayTimeQuery = from Channel channel in channelData.Channels
join channelSubscription in channelSubscriptions.SubscriptionSet on channel.ChannelID equals channelSubscription.ChannelID
from ChannelAsset channelAsset in channel.ChannelAssets
group channelAsset by channel.ChannelID into groupedAssets
select new
{
ChannelID = groupedAssets.Key,
AveragePlayTime = (float)groupedAssets.Average(channelAsset => channelAsset.DisplayDuration == -1F ? defaultDisplayDuration : channelAsset.DisplayDuration)
};
float sumAveragePlayTimes = 0F;
foreach (var channel in avgPlayTimeQuery)
{
sumAveragePlayTimes += channel.AveragePlayTime;
}
// calculate playing probability of each channel
var channelBuckets = HashSetLinqAccess.ToHashSet <ChannelBucket>(from ChannelSubscription channelSubscription in channelSubscriptions.SubscriptionSet
join channel in avgPlayTimeQuery on channelSubscription.ChannelID equals channel.ChannelID
join channelDataChannel in channelData.Channels on channel.ChannelID equals channelDataChannel.ChannelID
select new ChannelBucket
{
ChannelID = channel.ChannelID,
ChannelName = channelSubscription.ChannelName,
AveragePlayTime = channel.AveragePlayTime,
PlayingProbabilityUnnormalized = channel.AveragePlayTime > 0 && sumAveragePlayTimes > 0 ? (float)channelSubscription.ChannelWeightingUnnormalised / (channel.AveragePlayTime / sumAveragePlayTimes) : 0,
ContentAssets = ConvertChannelAssetsToPlayListAssetsIfDateTimeDemoPermits(channelDataChannel, demographicRangeVerifier, now)
});
if (channelBuckets.Count == 0)
{
return;
}
playlist.ChannelBuckets = channelBuckets;
// normalize playing probabilities
NormalizeChannelBucketPlayingProbabilities(playlist.ChannelBuckets, logger);
}
private bool AggregateAndUploadAdvertSpecificLogs(ChannelSubscriptions channelSubscriptions, TimeSpanWrapperClass dateTimeDiff, bool bRawLogsExist)
{
// work unit 1: aggregate to flat aggregated files
bool bAggregatedAdvertSpecificLogsExist = LoadAggregatedAdvertSpecific();
// if no logs exist, return.
if (!bRawLogsExist && !bAggregatedAdvertSpecificLogsExist)
{
ReleaseAggregatedFiles();
return(true);
}
// if we have the time difference, time-correct
if (dateTimeDiff != null)
{
TimeCorrect(dateTimeDiff.TimeSpan);
}
AggregateRawDataToMemoryAdvertSpecific(channelSubscriptions);
// append aggregated data from memory to files.
AppendAggregatedDataAdvertSpecific();
ReleaseAggregatedFiles();
//
// Work unit 2: upload data from aggregated files and truncate if successful
//
// search again for responsive server
string sendLogURI = GetResponsiveServer(ServerType.RelayLogAdv, _maxNoRelayLogServers, _machineGUIDSuffix, "UserDataMarshaller.svc");
// if no responsive servers found, return
if (sendLogURI == "")
{
_logger.WriteTimestampedMessage("AggregateAndUploadNonAdvertSpecificLogs: URL not found");
return(true);
}
_logger.WriteTimestampedMessage("AggregateAndUploadNonAdvertSpecificLogs: URL: " + sendLogURI + "/file");
_userDataMarshallerStreamerClient.Endpoint.Address = new EndpointAddress(sendLogURI + "/file");
UploadAdvertSpecificAggregatedFiles();
// truncate aggregated files. no need to check if there was an error as this is near the end of the LogExchanger
TruncateAdvertSpecificAggregatedFilesIfUploaded();
ReleaseAggregatedFiles();
return(true);
}
[DynamicContent(MaxAgeInSeconds = 10800)] // 3 hours
public ActionResult Subscriptions(string id)
{
ChannelSubscriptions subscriptions = (new DAService("Oxigen")).GetUserChannelSubscriptions(null, id); // for backwards compatibility, unused userGUID param is set to null instead of creating another method and propagating it to the WCF contracts.
if (subscriptions.SubscriptionSet == null)
{
return(HttpNotFound());
}
byte[] subscriptionsInBytes = Serializer.SerializeClearToByteArray(subscriptions);
var fileContentResult = new FileContentResult(subscriptionsInBytes, System.Net.Mime.MediaTypeNames.Application.Octet);
fileContentResult.FileDownloadName = "ss_channel_subscription_data.dat";
return(fileContentResult);
}
private static void GetAdvertisingPlaylist(string advertListPath, string demographicDataPath,
DemographicRangeVerifier demographicRangeVerifier, string password, Playlist playlist, ChannelData channelData,
ChannelSubscriptions channelSubscriptions, DateTime now, Logger logger)
{
// if the advertisment or the demographic data file is not found, an exception will be thrown
// if user has corrupted any of the files, an exception will be thrown
AdvertList advertList = (AdvertList)Serializer.Deserialize(typeof(AdvertList), advertListPath, password);
// flatten channel definitions
HashSet <string> channelDefinitions = new HashSet <string>();
foreach (Channel channel in channelData.Channels)
{
SplitAndInsertChannelDefinitions(ref channelDefinitions, channel.ChannelDefinitions);
}
// flatten advert definitions
HashSet <string> advertDefinitions = new HashSet <string>();
foreach (AdvertAsset advertasset in advertList.Adverts)
{
SplitAndInsertChannelDefinitions(ref advertDefinitions, advertasset.AdvertDefinitions);
}
var advertListsFiltered = HashSetLinqAccess.ToHashSet <AdvertPlaylistAsset>(from AdvertAsset advertAsset in advertList.Adverts
where demographicRangeVerifier.IsAssetDemoSyntaxPlayable(advertAsset.DemoRequirements) &&
TreeSearch.IncludeByChannelClassifications(channelDefinitions, advertAsset.InclusionExclusionList) == true &&
TreeSearch.IncludeByAdvertClassifications(advertDefinitions, channelData, channelSubscriptions) == true &&
now >= advertAsset.StartDateTime &&
now <= advertAsset.EndDateTime
select new AdvertPlaylistAsset
{
AssetID = advertAsset.AssetID,
AssetFilename = advertAsset.AssetFilename,
ClickDestination = advertAsset.ClickDestination,
AssetWebSite = advertAsset.AssetWebSite,
PlayerType = advertAsset.PlayerType,
ScheduleInfo = advertAsset.ScheduleInfo,
DisplayLength = advertAsset.DisplayDuration,
WeightingUnnormalized = advertAsset.Weighting,
StartDateTime = advertAsset.StartDateTime,
EndDateTime = advertAsset.EndDateTime
});
playlist.AdvertBucket.AdvertAssets = advertListsFiltered;
}
private ChannelSubscriptions FilterChannelSubscriptionsByLock(ChannelSubscriptions channelSubscriptions)
{
ChannelSubscriptions newSubscriptions = new ChannelSubscriptions();
if (channelSubscriptions == null || channelSubscriptions.SubscriptionSet.Count == 0)
{
return(newSubscriptions);
}
foreach (ChannelSubscription subscription in channelSubscriptions.SubscriptionSet)
{
if (!subscription.Locked)
{
newSubscriptions.SubscriptionSet.Add(subscription);
}
}
return(newSubscriptions);
}
private void GetChannelDataFiles(ChannelSubscriptions channelSubscriptions, ref bool bCancelled, WebClient client)
{
ReportProgress(0, 10, "Updating your subscriptions' playlist");
_logger.WriteTimestampedMessage("Getting channel data files");
int noSubscriptions = channelSubscriptions.SubscriptionSet.Count;
float step = 100F / (float)noSubscriptions;
float count = 0;
RequestCacheLevel cacheLevel = _verboseMode ? RequestCacheLevel.Revalidate : RequestCacheLevel.Default;
client.CachePolicy = new RequestCachePolicy(cacheLevel);
// get channel data for each channel subscription
foreach (ChannelSubscription channelSubscription in channelSubscriptions.SubscriptionSet)
{
if (_worker != null && _worker.CancellationPending)
{
bCancelled = true;
return;
}
ReportProgress(count * step, 10, "Updating playlist for Stream: " + channelSubscription.ChannelName);
// checksum of channel file
string channelFileFullPath = _channelDataPath + channelSubscription.ChannelID + "_channel.dat";
try
{
_logger.WriteTimestampedMessage("Attempting to get Channel " + channelSubscription.ChannelID);
client.DownloadFile(_cdnSubdomain + "channel/" + channelSubscription.ChannelID + "_channel.dat", channelFileFullPath);
}
catch (Exception ex)
{
// write error but do not return. continue with the other channels.
_logger.WriteError(ex);
}
}
ReportProgress(100, 20);
}
private void CleanUpUnsubscribedChannelFiles(ChannelSubscriptions channelSubscriptions)
{
string[] allChannelDataFilenames = Directory.GetFiles(_channelDataPath, "*.dat");
int noSubscriptions = channelSubscriptions.SubscriptionSet.Count;
if (allChannelDataFilenames.Length == 0)
{
//_logger.WriteTimestampedMessage("No channel data files.");
return;
}
int subscriptionCount = 0;
// create an array to contain the files that correspond to the updates subscribed channel list
string[] channelSubscriptionFiles = new string[noSubscriptions];
foreach (ChannelSubscription channelSubscription in channelSubscriptions.SubscriptionSet)
{
channelSubscriptionFiles[subscriptionCount] = _channelDataPath + channelSubscription.ChannelID.ToString() + "_channel.dat";
subscriptionCount++;
}
int noAllChannelDataFileNames = allChannelDataFilenames.Length;
if (noAllChannelDataFileNames > 0)
{
// search the two arrays and clean the files that no longer match the subscription list
foreach (string existingFileName in allChannelDataFilenames)
{
if (Array.IndexOf <string>(channelSubscriptionFiles, existingFileName) == -1)
{
_logger.WriteTimestampedMessage("Deleting " + existingFileName);
File.Delete(existingFileName);
}
}
}
}
private ChannelSubscriptions GetChannelSubscriptions()
{
if (!File.Exists(_userChannelSubscriptionsPath))
{
_logger.WriteTimestampedMessage("Channel subscriptions don't exist");
return(null);
}
ChannelSubscriptions channelSubscriptions = null;
try
{
channelSubscriptions = (ChannelSubscriptions)Serializer.Deserialize(typeof(ChannelSubscriptions), _userChannelSubscriptionsPath, _systemPassPhrase);
}
catch (Exception ex)
{
_logger.WriteError(ex);
return(null);
}
return(channelSubscriptions);
}
/// <summary>
/// Gets the channel subscriptions from disk and normalizes their channel weightings
/// </summary>
/// <returns>a ChannelSubscriptions object with channel subscription information</returns>
private ChannelSubscriptions GetChannelSubscriptions()
{
if (!File.Exists(_channelSubscriptionPath))
{
return(null);
}
ChannelSubscriptions channelSubscriptions = null;
try
{
channelSubscriptions = (ChannelSubscriptions)Serializer.Deserialize(typeof(ChannelSubscriptions), _channelSubscriptionPath, _password);
}
catch (Exception ex)
{
_logger.WriteError(ex);
return(null);
}
channelSubscriptions.NormalizeChannelWeightings();
return(channelSubscriptions);
}
/// <summary>
/// Creates the playlist for the user
/// </summary>
/// <param name="channelDataPath">Directory on the end user's computer where channel content files reside</param>
/// <param name="advertListPath">Fully qualified path of the advert list file on the end user's computer</param>
/// <param name="demographicDataPath">Fully qualified path of the demographic data path on the end user's computer</param>
/// <param name="playlistDataPath">Fully qualified path on the end user's computer to save the playlist to</param>
/// <param name="password">Encryption password</param>
/// <param name="channelSubscriptions">ChannelSubscriptions object with the user's channel subscriptions</param>
/// <param name="logger">Logger to log debug/error messages</param>
/// <exception cref="System.Runtime.Serialization.SerializationException">Thrown when an error occurs during serialization/deserializaton</exception>
/// <exception cref="InvalidOperationException">Thrown when file to be serialized don't match the deserializer's expected type</exception>
/// <exception cref="DirectoryNotFoundException">thrown when directory to save or load a file from is not found</exception>
/// <exception cref="FileNotFoundException">thrown when a file is not found</exception>
/// <exception cref="CryptographicException">thrown when a serialized file is corrupted</exception>
public static Playlist CreatePlaylist(string channelDataPath,
string advertListPath,
string demographicDataPath,
string playlistDataPath,
string password,
float defaultDisplayDuration,
ChannelSubscriptions channelSubscriptions,
Logger logger)
{
Playlist playlist = new Playlist();
// holds the channels to which the user is subscribed
ChannelData channelData = new ChannelData();
// check if channel data directory exists!
if (!Directory.Exists(channelDataPath))
{
return(null);
}
string[] fileEntries = Directory.GetFiles(channelDataPath, "*.dat");
if (channelSubscriptions.SubscriptionSet.Count == 0 || fileEntries.Length == 0)
{
return(playlist);
}
foreach (string file in fileEntries)
{
channelData.Channels.Add((Channel)Serializer.Deserialize(typeof(Channel), file, "password"));
}
if (!File.Exists(demographicDataPath))
{
return(null);
}
DateTime now = DateTime.Now;
DemographicData demographicData = (DemographicData)Serializer.Deserialize(typeof(DemographicData), demographicDataPath, password);
DemographicRangeVerifier demographicRangeVerifier = new DemographicRangeVerifier(demographicData);
GetNonAdvertisingPlaylist(channelData,
password,
playlist,
demographicRangeVerifier,
channelSubscriptions,
now,
defaultDisplayDuration,
logger);
// advertising playlist
GetAdvertisingPlaylist(advertListPath,
demographicDataPath,
demographicRangeVerifier,
password,
playlist,
channelData,
channelSubscriptions,
now,
logger);
Serializer.Serialize(playlist, playlistDataPath, password);
return(playlist);
}
/// <summary>
/// Updates application data and asset files from the relay server, generates the user's playlist
/// and cleans up any old files
/// </summary>
internal ExchangeStatus Execute()
{
CELog log = null;
ExchangeStatus status = new ExchangeStatus();
bool bContentDownloaded = false;
if (!_bGlobalsSet)
{
_logger.WriteTimestampedMessage("Error Setting Globals. Exiting Content Exchanger");
status.ExitWithError = true;
status.ContentDownloaded = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
status.LowDiskSpace = IsDiskSpaceLow();
if (status.LowDiskSpace)
{
_logger.WriteTimestampedMessage("Low Disk Space. Exiting Content Exchanger");
status.ExitWithError = true;
status.ContentDownloaded = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
if (!DirStructureOK())
{
_logger.WriteTimestampedMessage("Error checking disk structure. Exiting Content Exchanger");
status.ExitWithError = true;
status.ContentDownloaded = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
if (!FileAccessRights())
{
_logger.WriteTimestampedMessage("Insufficient file access rights. Exiting Content Exchanger");
status.ExitWithError = true;
status.ContentDownloaded = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
try
{
FailedInternetConnectionAttemptFileAccessor failedAttemptAccessor = new FailedInternetConnectionAttemptFileAccessor();
try
{
SendHeartbeat(_machineGUID);
failedAttemptAccessor.ResetFailedAttempts();
}
catch (WebException)
{
failedAttemptAccessor.RecordFailedAttempt();
if (RunsInTheBackground)
{
if (failedAttemptAccessor.GetFailedAttempts() >= MAX_NO_FAILED_INTERNET_CONNECTION_ATTEMPTS)
{
MessageBox.Show("Oxigen is having trouble communicating via the Internet. Please see the FAQs to ensure your PC is correctly configured.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
failedAttemptAccessor.ResetFailedAttempts();
status.ExitWithError = true;
status.ContentDownloaded = false;
return(status);
}
}
throw;
}
// update config files
bool bCancelled = false;
using (WebClient client = new WebClient())
{
if (client.Proxy != null)
{
client.Proxy.Credentials = CredentialCache.DefaultCredentials;
}
UpdateConfigFiles(client, ref bCancelled);
if (bCancelled)
{
status.ExitWithError = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
// raed the downloaded channel subscriptions
ChannelSubscriptions channelSubscriptions = GetChannelSubscriptions();
if (channelSubscriptions == null)
{
_logger.WriteTimestampedMessage("No channel subscripitions found. Exiting Content Exchanger");
ReportProgress(100, 100);
status.ExitWithError = false;
status.ContentDownloaded = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
channelSubscriptions = FilterChannelSubscriptionsByLock(channelSubscriptions);
// get the channel data files
GetChannelDataFiles(channelSubscriptions, ref bCancelled, client);
if (bCancelled)
{
status.ExitWithError = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
// Generate Playlist
Playlist playlist = null;
ReportProgress(0, 20, "Creating the local playlist");
try
{
playlist = PlaylistMaker.CreatePlaylist(_channelDataPath,
_advertDataPath,
_demographicDataPath,
_playlistPath,
_password,
_defaultDisplayDuration,
channelSubscriptions,
_logger);
}
catch (Exception ex)
{
_logger.WriteError(ex);
_logger.WriteTimestampedMessage("Exiting Content Exchanger");
ReportProgress(100, 100);
status.ExitWithError = true;
status.ContentDownloaded = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
ReportProgress(100, 30);
// clean up unused files
CleanUpUnusedFiles(channelSubscriptions, playlist);
if (_worker != null && _worker.CancellationPending)
{
status.ExitWithError = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
bool bLowAssetSpace = false;
// Get content and advert files
bool bAssetFilesSuccessful = GetAssetFiles(playlist, ref bLowAssetSpace, ref bContentDownloaded,
ref bCancelled, client);
if (bCancelled)
{
status.ContentDownloaded = bContentDownloaded;
status.ExitWithError = false;
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
status.ContentDownloaded = bContentDownloaded;
status.ExitWithError = !bAssetFilesSuccessful;
status.LowAssetSpace = bLowAssetSpace;
}
}
catch (Exception ex)
{
_logger.WriteError(ex);
status.ExitWithError = true;
}
_logger.WriteTimestampedMessage("Exiting Content Exchanger");
ReportProgress(100, 100);
log = new CELog(DateTime.Now, status.ContentDownloaded, status.ExitWithError);
log.SaveLog();
return(status);
}
/// <summary>
/// Calculates the Advert click proportions per channel according to channel weighting
/// </summary>
/// <param name="advertClickLog">advert click log</param>
/// <param name="channelSubscriptions">user channel subscriptions with normalized channel weightings</param>
/// <returns>a List with the proportions</returns>
public static List <AdvertChannelOperationProportions> GetAdvertChannelClickProportions(List <ClickLogEntry> advertClickLog,
ChannelSubscriptions channelSubscriptions)
{
var advertTotalClicks = from ClickLogEntry clickLogEntry in advertClickLog
group clickLogEntry by clickLogEntry.AssetID into groupedAdvertsByID
select new
{
AdvertID = groupedAdvertsByID.Key,
AdvertTotalClicks = groupedAdvertsByID.Count()
};
var advertChannelClickProportions = from advert in advertTotalClicks
select new AdvertChannelOperationProportions
{
AdvertAssetID = advert.AdvertID,
ChannelAdvertOperationStats = (from ChannelSubscription channelSubscription in channelSubscriptions.SubscriptionSet
select new ChannelAdvertOperationStat
{
ChannelID = channelSubscription.ChannelID,
AdvertOperationProportion = (float)advert.AdvertTotalClicks * channelSubscription.ChannelWeightingNormalised
}).ToList <ChannelAdvertOperationStat>()
};
return(advertChannelClickProportions.ToList <AdvertChannelOperationProportions>());
}
/// <summary>
/// Calculates the Advert show proportions per channel according to channel weighting
/// </summary>
/// <param name="advertImpressionLog">advert show log</param>
/// <param name="channelSubscriptions">user channel subscriptions with normalized channel weightings</param>
/// <returns>a List with the proportions</returns>
public static List <AdvertChannelOperationProportions> GetAdvertChannelImpressionProportions(List <ImpressionLogEntry> advertImpressionLog,
ChannelSubscriptions channelSubscriptions)
{
var advertTotalPlayTimes = from ImpressionLogEntry impressionLogEntry in advertImpressionLog
group impressionLogEntry by impressionLogEntry.AssetID into groupedAdvertsByID
select new
{
AdvertID = groupedAdvertsByID.Key,
AdvertTotalPlayTime = groupedAdvertsByID.Sum(impressionLogEntry => impressionLogEntry.Duration)
};
var advertChannelPlayProportions = from advert in advertTotalPlayTimes
select new AdvertChannelOperationProportions
{
AdvertAssetID = advert.AdvertID,
ChannelAdvertOperationStats = (from ChannelSubscription channelSubscription in channelSubscriptions.SubscriptionSet
select new ChannelAdvertOperationStat
{
ChannelID = channelSubscription.ChannelID,
AdvertOperationProportion = (float)advert.AdvertTotalPlayTime * channelSubscription.ChannelWeightingNormalised
}).ToList <ChannelAdvertOperationStat>()
};
return(advertChannelPlayProportions.ToList <AdvertChannelOperationProportions>());
}
/// <summary>
/// Checks if an advert is to be included in the playlist by checking the advert's classifications against the channel's rules
/// (channels selecting which adverts to feature).
/// The list that holds the inclusion and exclusion rules.It has already been sorted from least specific to most specific.
/// </summary>
/// <param name="advertDefinitions">All the advert definitions of all the adverts in the Advert Taxonomy tree</param>
/// <param name="channelData">The Channel Data with advert exclusion/inclusion listings. The listings are already sorted from less to more specific (per channel and not overall).</param>
/// <param name="channelSubscriptions">User's channel subscription class. Used to extract channel weighting information.</param>
/// <returns>true means advert is included in the playlist</returns>
public static bool IncludeByAdvertClassifications(HashSet <string> advertDefinitions, ChannelData channelData, ChannelSubscriptions channelSubscriptions)
{
// initialize the 'decision lolipop'
bool bInclude = true;
// initialize a Dictionary with channel inclusions exclusions
Dictionary <Channel, bool> channelInclusionsExclusions = new Dictionary <Channel, bool>();
// fill in the dictionary of channel inclusions exclusions with all the channels.
// default all inclusions/exclusions to true, as bool is value-type
foreach (Channel channel in channelData.Channels)
{
channelInclusionsExclusions.Add(channel, true);
}
// keep the voting thresholds of the channels who vote to exclude the advert
HashSet <float> excludingVotingThresholds = new HashSet <float>();
float currentChannelWeighting = 0F;
float totalChannelWeighting = 0F;
float totalExcludeChannelWeighting = 0F;
float averageExclusionPercentage = 0F;
// Algorithm starts here
foreach (Channel channel in channelData.Channels)
{
channelInclusionsExclusions[channel] = true;
foreach (string advertDefinition in advertDefinitions)
{
bInclude = true;
foreach (InclusionExclusionRule inclusionExclusionRule in channel.InclusionExclusionList)
{
if (advertDefinition.StartsWith(inclusionExclusionRule.Rule))
{
bInclude = inclusionExclusionRule.IncEx == IncludeExclude.Include;
}
}
// Until either an Advert Classification (Definition) is classsified as Excluded
if (!bInclude)
{
channelInclusionsExclusions[channel] = false;
break;
}
}
}
// calculate the AEP
foreach (Channel channel in channelData.Channels)
{
currentChannelWeighting = (float)channelSubscriptions.GetChannelWeightingUnnormalisedByChannelID(channel.ChannelID);
totalChannelWeighting += currentChannelWeighting;
// The channel weightings between 0 - 100
if (!channelInclusionsExclusions[channel])
{
totalExcludeChannelWeighting += currentChannelWeighting;
}
}
averageExclusionPercentage = (totalExcludeChannelWeighting / totalChannelWeighting) * 100F;
foreach (Channel channel in channelData.Channels)
{
if (!channelInclusionsExclusions[channel])
{
// The voting thresholds are between 0 - 100
if (averageExclusionPercentage >= channel.VotingThreshold)
{
return(false);
}
}
}
return(true);
}
private void AggregateRawDataToMemoryAdvertSpecific(ChannelSubscriptions channelSubscriptions)
{
_advertChannelClickProportionsSet = LogStatsCalculator.GetAdvertChannelClickProportions(_advertClickLog, channelSubscriptions);
_advertChannelImpressionProportionsSet = LogStatsCalculator.GetAdvertChannelImpressionProportions(_advertImpressionLog, channelSubscriptions);
}