private ICassandraClient CreateClient(CassandraSettings settings)
{
var cassandraClient = new CassandraClient(CreateSession(settings))
{
RetrySetting = settings.RetrySetting ?? new RetrySetting()
};
return(cassandraClient);
}
public override async void Process(ApplicationEvent msg)
{
using (await _lock.LockAsync())
{
CassandraSettings updatedSettings = await _configProvider.GetSettings();
if (_signature.Equals(updatedSettings.Signature) == false)
{
_client = CreateClient(updatedSettings);
_signature = updatedSettings.Signature;
}
}
}
private async Task <ICassandraClient> GetClient()
{
if (_client != null)
{
return(_client);
}
else
{
using (await _lock.LockAsync())
{
if (_client != null)
{
return(_client);
}
CassandraSettings settings = await _configProvider.GetSettings();
_client = CreateClient(settings);
_signature = settings.Signature;
return(_client);
}
}
}
private ISession CreateSession(CassandraSettings db)
{
CompressionType compression = CompressionType.LZ4;
if (string.IsNullOrWhiteSpace(db.Compression))
{
compression = CompressionType.LZ4;
}
else
{
if (Enum.TryParse(db.Compression, out compression) == false)
{
compression = CompressionType.LZ4;
}
}
try
{
return(string.IsNullOrEmpty(db.Username) || string.IsNullOrEmpty(db.Password)
? Cluster
.Builder()
.AddContactPoints(db.Hosts)
.Build()
.Connect(db.KeySpace)
: Cluster
.Builder()
.AddContactPoints(db.Hosts)
.WithCredentials(db.Username, db.Password)
.Build()
.Connect(db.KeySpace));
}
catch (Exception ex)
{
throw ex;
}
}
