private static bool TryGetCachedMarketStat(int typeID, int regionID, out MarketStat value)
{
Dictionary<int, MarketStat> regionCache;
// check cache
lock (m_cache)
{
if (m_cache.TryGetValue(regionID, out regionCache)
&& regionCache.TryGetValue(typeID, out value)
&& DateTime.Now.Subtract(value.TimeStamp) < m_cacheDuration)
return true;
}
// default
value = new MarketStat();
return false;
}
private static void CacheMarketStat(int typeID, int regionID, MarketStat value)
{
Dictionary<int, MarketStat> regionCache;
lock (m_cache)
{
// fetch or create the region cache
if (!m_cache.TryGetValue(regionID, out regionCache))
{
regionCache = new Dictionary<int, MarketStat>();
m_cache[regionID] = regionCache;
}
// store the value
regionCache[typeID] = value;
m_cacheDirty = true;
}
}
private static Dictionary<int, MarketStat> ParseMarketStat(string path)
{
Dictionary<int, MarketStat> results = new Dictionary<int, MarketStat>();
DateTime now = DateTime.Now;
// parse the requested value from the eve-central XML
using (FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read))
{
XPathDocument doc = new XPathDocument(fs);
XPathNavigator nav = doc.CreateNavigator();
XPathNodeIterator typeNodes = nav.Select("//marketstat/type");
MarketStat stat;
int typeID;
while (typeNodes.MoveNext())
{
// read the data from this node
try
{
typeID = typeNodes.Current.SelectSingleNode("@id").ValueAsInt;
stat = new MarketStat();
stat.TimeStamp = now;
stat.All = ParseMarketStatEntry(typeNodes.Current.SelectSingleNode("all"));
stat.Buy = ParseMarketStatEntry(typeNodes.Current.SelectSingleNode("buy"));
stat.Sell = ParseMarketStatEntry(typeNodes.Current.SelectSingleNode("sell"));
results[typeID] = stat;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
}
}
}
return results;
}