public bool GetIsCacheExpired()
{
var cacheVersionstampFile = ApplicationPath.GetRepositoryDataFile(_client, "cache.versionstamp");
if (!File.Exists(cacheVersionstampFile))
{
return(true);
}
try
{
using (var file = File.OpenRead(cacheVersionstampFile))
{
var stamp = (CacheVersionStamp)CacheVersionStamp.Serializer.ReadObject(file);
if (stamp.GameVersion != _client.Version || stamp.CacheFormatVersion < CurrentCacheFormatVersion)
{
this.LogInfo("cache version stamp expired");
return(true);
}
}
}
catch (Exception ex)
{
this.LogError("failed to read cache versionstamp: {0}", ex.Message);
return(true);
}
return(false);
}
internal void UpdateCacheVersionstamp()
{
var cacheVersionstampFile = ApplicationPath.GetRepositoryDataFile(_client, "cache.versionstamp");
try
{
using (var file = File.Create(cacheVersionstampFile))
{
CacheVersionStamp.Serializer.WriteObject(file, new CacheVersionStamp(CurrentCacheFormatVersion, _client.Version));
}
}
catch (Exception ex)
{
this.LogError("failed to write xml cache versionstamp: {0}", ex.Message);
}
}
public T Load <T>(string cacheFilename, Func <T> buildAction, Func <Stream, T> loadAction, Action <Stream, T> saveAction)
{
var cacheFile = ApplicationPath.GetRepositoryDataFile(_client, cacheFilename);
if (!this.IsCacheExpired)
{
if (File.Exists(cacheFile))
{
try
{
using (var file = File.OpenRead(cacheFile))
{
return(loadAction(file));
}
}
catch (Exception ex)
{
this.LogError("failed to load cache file '{0}': {1}", cacheFilename, ex.Message);
}
}
}
else
{
this.LogInfo("cache of '{0}' is expired, gonna rebuild", cacheFilename);
}
var result = buildAction();
try
{
using (var file = File.Create(cacheFile))
{
saveAction(file, result);
}
}
catch (Exception ex)
{
this.LogError("failed to save cache for '{0}': {1}", cacheFilename, ex.Message);
}
return(result);
}
private T LoadDataContractSerialized <T>(string cacheFilename)
{
var cacheFile = ApplicationPath.GetRepositoryDataFile(_client, cacheFilename);
if (File.Exists(cacheFile))
{
try
{
var serializer = new DataContractSerializer(typeof(T));
using (var file = File.OpenRead(cacheFile))
{
return((T)serializer.ReadObject(file));
}
}
catch (Exception ex)
{
this.LogError("failed to load cache file '{0}': {1}", cacheFilename, ex.Message);
return(default(T));
}
}
return(default(T));
}
public XElement LoadXml(string cacheFilename, Func <XElement> buildAction)
{
var cacheFile = ApplicationPath.GetRepositoryDataFile(_client, cacheFilename);
if (!this.IsCacheExpired)
{
if (File.Exists(cacheFile))
{
try
{
return(XElement.Load(cacheFile));
}
catch (Exception ex)
{
this.LogError("failed to load xml cache file '{0}': {1}", cacheFilename, ex.Message);
}
}
}
else
{
this.LogInfo("xml cache of '{0}' is expired, gonna rebuild", cacheFilename);
}
var element = buildAction();
try
{
element.Save(cacheFile);
}
catch (Exception ex)
{
this.LogError("failed to save xml cache for '{0}': {1}", cacheFilename, ex.Message);
}
return(element);
}