/// <summary>
/// Get the player info from game's databse
/// </summary>
static private async Task <NameOutfitFactionRecord> FetchPlayerInfo(JsonString id)
{
JsonObject json;
int retry = 0;
// try to resolve player info from database at most 3 times before returning unresolved record
do
{
string uri = $@"http://census.daybreakgames.com/s:{PS2APIConstants.ServiceId}/get/ps2/character_name/?character_id={id.InnerString}&c:join=character^inject_at:character^show:faction_id(outfit_member_extended^inject_at:outfit^show:alias%27name)";
json = await PS2APIUtils.RestAPIRequestClient(uri);
} while (json == null && ++retry < 3);
NameOutfitFactionRecord record = new NameOutfitFactionRecord();
if ((record.Name = (json?["character_name_list"]?[0]?["name"]?["first"] as JsonString)?.InnerString) == null)
{
record.Name = $"<Character:{id.InnerString}>";
}
if ((record.Faction = (json?["character_name_list"]?[0]?["character"]?["faction_id"] as JsonString)?.InnerString) == null)
{
record.Faction = $"<CharacterFaction:{id.InnerString}>";
}
// no outfit is possible value
record.Outfit = (json?["character_name_list"]?[0]?["character"]?["outfit"]?["alias"] as JsonString)?.InnerString;
record.Id = id;
return(record);
}
/// <summary>
/// Gets player name from cache if present or otherwise directly from Rest APIa
/// </summary>
public static async Task <NameOutfitFactionRecord> GetPlayer(JsonString id)
{
CacheStruct cacheItem;
if (id == null || id.InnerString == "0")
{
return(default(NameOutfitFactionRecord));
}
try
{
// check whether player is cached and still valid (fast check)
rwl.EnterReadLock();
try
{
if (ResolvedPlayers.TryGetValue(id, out cacheItem) && DateTime.Now - cacheItem.cachedTime < cacheTimeoutMinutes)
{
return(cacheItem.cachedValue);
}
}
finally
{
rwl.ExitReadLock();
}
// check if this player's query is already in progress and either get that query's semaphore or create new one
SemaphoreSlim queryLock;
lock (QueriesInProgress)
{
if (!QueriesInProgress.TryGetValue(id, out queryLock))
{
QueriesInProgress.Add(id, queryLock = new SemaphoreSlim(1, 1));
}
}
// wait for query lock
await queryLock.WaitAsync();
try
{
// while we waited for query semaphore, someone else finished query and result is now available
if (ResolvedPlayers.TryGetValue(id, out cacheItem) && DateTime.Now - cacheItem.cachedTime < cacheTimeoutMinutes)
{
return(cacheItem.cachedValue);
}
// fetch player info from Rest API
NameOutfitFactionRecord record = await FetchPlayerInfo(id);
// if all mandatory record items are valid, save the record to cache
if (!record.Name.StartsWith("<") && !record.Faction.StartsWith("<"))
{
cacheItem.cachedTime = DateTime.Now;
cacheItem.cachedValue = record;
rwl.EnterWriteLock();
try
{
ResolvedPlayers[id] = cacheItem;
}
finally
{
rwl.ExitWriteLock();
}
}
return(record);
}
finally
{
queryLock.Release();
}
} catch (Exception e)
{
Console.WriteLine($"Player cache ID:{id}\n{e.ToString()}");
return(default(NameOutfitFactionRecord));
}
}