private static void _InitCassandra()
{
_conn = new Cassandra.Connection();
Console.WriteLine("[cassandra] connected to cassandra version " + _conn.DescribeVersion());
Cassandra.KeySpaceDefinition ksdef = new Cassandra.KeySpaceDefinition()
{
Name = "tood",
ColumnFamilies =
{
new Cassandra.ColumnFamilyDefinition()
{
Keyspace = "tood",
Name = "users",
}
},
ReplicationFactor = 1,
ReplicationStrategy = Cassandra.ReplicationStrategy.SimpleStrategy,
};
_InitializeKeySpace(_conn, ksdef);
}
private static void _InitCassandra()
{
_conn = new Cassandra.Connection();
Console.WriteLine("[cassandra] connected to cassandra version " + _conn.DescribeVersion());
Cassandra.KeySpaceDefinition ksdef = new Cassandra.KeySpaceDefinition() {
Name = "tood",
ColumnFamilies = {
new Cassandra.ColumnFamilyDefinition() {
Keyspace = "tood",
Name = "users",
}
},
ReplicationFactor = 1,
ReplicationStrategy = Cassandra.ReplicationStrategy.SimpleStrategy,
};
_InitializeKeySpace(_conn, ksdef);
}
private static void _InitializeKeySpace(Cassandra.Connection conn, Cassandra.KeySpaceDefinition current)
{
Cassandra.KeySpaceDefinition existing;
try {
existing = conn.DescribeKeySpace(current.Name);
} catch (Cassandra.NotFoundException) {
_conn.SystemAddKeyspace(current);
_conn.SetKeyspace(current.Name);
Console.WriteLine("[cassandra] created keyspace '" + current.Name + "'");
return;
}
_conn.SetKeyspace(current.Name);
Dictionary <string, Cassandra.ColumnFamilyDefinition> cf_toremove = new Dictionary <string, Cassandra.ColumnFamilyDefinition>();
Dictionary <string, Cassandra.ColumnFamilyDefinition> cf_toadd = new Dictionary <string, Cassandra.ColumnFamilyDefinition>();
List <KeyValuePair <Cassandra.ColumnFamilyDefinition, Cassandra.ColumnFamilyDefinition> > cf_toupdate = new List <KeyValuePair <Cassandra.ColumnFamilyDefinition, Cassandra.ColumnFamilyDefinition> >();
foreach (var cf in existing.ColumnFamilies)
{
cf_toremove.Add(cf.Name, cf);
}
foreach (var cf in current.ColumnFamilies)
{
Cassandra.ColumnFamilyDefinition oldcf;
if (cf_toremove.TryGetValue(cf.Name, out oldcf))
{
cf_toremove.Remove(cf.Name);
cf_toupdate.Add(new KeyValuePair <Cassandra.ColumnFamilyDefinition, Cassandra.ColumnFamilyDefinition>(oldcf, cf));
}
else
{
cf_toadd.Add(cf.Name, cf);
}
}
foreach (var cf in cf_toremove.Keys)
{
_conn.SystemDropColumnFamily(cf);
Console.Error.WriteLine("[cassandra] dropped column family '" + cf + "' from keyspace '" + current.Name + "'");
}
foreach (var cf in cf_toadd.Values)
{
_conn.SystemAddColumnFamily(cf);
Console.Error.WriteLine("[cassandra] added column family '" + cf.Name + "' to keyspace '" + current.Name + "'");
}
foreach (var pair in cf_toupdate)
{
pair.Value.Id = pair.Key.Id;
_conn.SystemUpdateColumnFamily(pair.Value);
Console.Error.WriteLine("[cassandra] updated column family '" + pair.Value.Name + "' in keyspace '" + current.Name + "'");
}
var ksclone = current.Clone();
ksclone.ColumnFamilies.Clear();
conn.SystemUpdateKeyspace(ksclone);
Console.Error.WriteLine("[cassandra] updated keyspace '" + current.Name + "'");
}
