public static StorageMetadata ReadMetadata(ILogger logger)
{
StorageMetadata result = null;
if (File.Exists("metadata.bin"))
{
try
{
int i = 5;
do
{
try
{
using (Stream s = File.Open("metadata.bin", FileMode.Open, FileAccess.ReadWrite))
{
BinaryFormatter bf = new BinaryFormatter();
result = bf.Deserialize(s) as StorageMetadata;
}
break;
}
catch (IOException)
{
if (--i <= 0)
{
throw;
}
logger.Log("StorageMetadata", "Reading metadata exception! Remaining atteprts: " + i,
MessageLevel.Warning);
Thread.Sleep(new TimeSpan(0, 0, 0, (5 - i) * 2));
}
}while (i > 0);
logger.Log("StorageMetadata", "StorageMetadata loaded successfully", MessageLevel.Info);
return(result);
}
catch (SerializationException)
{
logger.Log("StorageMetadata", "StorageMetadata not loaded. Creating new.", MessageLevel.Warning);
return(new StorageMetadata()
{
Databases = new ConcurrentDictionary <Did, IDatabaseParameters>()
});
}
}
else
{
logger.Log("StorageMetadata", "StorageMetadata not loaded. Creating new.", MessageLevel.Warning);
return(new StorageMetadata()
{
Databases = new ConcurrentDictionary <Did, IDatabaseParameters>()
});
}
}
public static void SaveMetadata(StorageMetadata metadata, ILogger logger)
{
try
{
using (Stream s = File.Open("metadata.bin", FileMode.Create, FileAccess.ReadWrite))
{
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(s, metadata);
}
logger.Log("StorageMetadata", "StorageMetadata saved successfully", MessageLevel.Info);
}
catch (SerializationException ex)
{
logger.Log("StorageMetadata", string.Format("StorageMetadata not saved.{0}", ex), MessageLevel.Error);
}
}