/// <summary>
/// Executes a "get" over the connection. Return values are set into Output
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
ColumnOrSuperColumn columnOrSupercolumn = null;
ColumnPath columnPath = this.BuildColumnPath(this.ColumnFamily, this.SuperColumnName, this.ColumnName);
try
{
columnOrSupercolumn = cassandraClient.get(this.KeySpace, this.Key, columnPath, this.GetCassandraConsistencyLevel());
}
catch (NotFoundException ex)
{
logger.Warn(
logger.StringFormatInvariantCulture("{{ KeySpace: '{0}', Key: '{1}', ColumnFamily: '{2}', SuperColumn: '{3}', Column: '{4}' }} not found.",
this.KeySpace,
this.Key,
this.ColumnFamily,
(this.SuperColumnName != null) ? this.SuperColumnName : String.Empty,
(this.ColumnName != null) ? this.ColumnName : String.Empty),
ex);
}
if (columnOrSupercolumn != null)
{
this.buildOut(columnOrSupercolumn);
}
else
{
// in case of reuse of the command
this.Output = null;
}
}
/// <summary>
/// Executes a "multiget_slice" over the connection. No return values.
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
this.Output = null;
ColumnParent columnParent = this.BuildColumnParent(this.SuperColumn);
SlicePredicate predicate = this.Predicate.ToThrift();
Dictionary<string, List<ColumnOrSuperColumn>> output = cassandraClient.multiget_slice(this.KeySpace, this.Keys, columnParent, predicate, this.GetCassandraConsistencyLevel());
this.buildOut(output);
}
/// <summary>
/// Executes a "insert" over the connection. No return values.
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
logger.Debug(logger.StringFormatInvariantCulture("Adding key '{0}' from columnFamily '{1}' from KeySpace '{2}'.", this.Key, this.ColumnFamily, this.KeySpace));
Column column = this.Column.ToThrift();
ColumnPath columnPath = this.BuildColumnPath(this.ColumnFamily, this.SuperColumn, this.Column.ColumnName);
cassandraClient.insert(this.KeySpace, this.Key, columnPath, column.Value, column.Timestamp, this.GetCassandraConsistencyLevel());
}
/// <summary>
/// Executes a "get_range_slices" over the connection. No return values.
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
this.Output = null;
ColumnParent columnParent = this.BuildColumnParent(this.SuperColumn);
SlicePredicate predicate = this.Predicate.ToThrift();
// Dictionary<string, List<ColumnOrSuperColumn>> output
KeyRange keyRange = this.KeyTokenRange.ToThrift();
List<KeySlice> result = cassandraClient.get_range_slices(this.KeySpace, columnParent, predicate, keyRange, this.GetCassandraConsistencyLevel());
this.buildOut(result);
}
/// <summary>
/// Executes a "remove" over the connection. No return values
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
ColumnPath columnPath;
if (this.Column != null)
{
logger.Debug(logger.StringFormatInvariantCulture("Removing column '{0}' for key '{1}' from columnFamily '{2}' from KeySpace '{3}'.", this.Column.ColumnName, this.Key, this.ColumnFamily, this.KeySpace));
columnPath = this.BuildColumnPath(this.ColumnFamily, this.SuperColumnName, this.Column.ColumnName);
cassandraClient.remove(this.KeySpace, this.Key, columnPath, this.Column.Timestamp.Value, this.GetCassandraConsistencyLevel());
}
else
{
logger.Debug(logger.StringFormatInvariantCulture("Removing key '{0}' from columnFamily '{1}' from KeySpace '{2}'.", this.Key, this.ColumnFamily, this.KeySpace));
columnPath = this.BuildColumnPath(this.ColumnFamily, this.SuperColumnName, null);
cassandraClient.remove(this.KeySpace, this.Key, columnPath, UnixHelper.UnixTimestamp, this.GetCassandraConsistencyLevel());
}
}
public void Start(bool fromScratch = false)
{
Cassandra.Start(fromScratch);
}
/// <summary>
/// Executes a "login" over the connection.
/// <remarks>In case the login fails, posible login exceptions are AuthenticationException, AuthorizationException</remarks>
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
AuthenticationRequest authReq = this.BuildAuthenticationRequest();
cassandraClient.login(this.KeySpace, authReq);
}
/// <summary>
/// Executes a "remove" over the connection. No return values
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
Dictionary<string, Dictionary<string, List<Mutation>>> mutation_map = this.translate(this.Mutations);
cassandraClient.batch_mutate(this.KeySpace, mutation_map, this.GetCassandraConsistencyLevel());
}
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 + "'");
}
/// <summary>
/// Executes a "get_count" over the connection. Return values are set into Output
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
ColumnParent columnParent = this.BuildColumnParent(this.SuperColumnName);
this.Count = cassandraClient.get_count(this.KeySpace, this.Key, columnParent, this.GetCassandraConsistencyLevel());
}
public void AddColumn(string key, string cf, string name, int value, Cassandra.Client client)
{
client.insert(ToByte(key), GetParent(cf), NewColumn(name, value), ConsistencyLevel.ONE);
}
public static List<KeySlice> GetAllFromCF(string cf, int count, Cassandra.Client client)
{
return client.get_range_slices(GetParent(cf), GetPredicate(count), GetKeyRange(count), ConsistencyLevel.ONE);
}
public CassandraClient(Cassandra.Client cassandraClient, CassandraEndpoint endpoint)
{
this.InnerClient = cassandraClient;
this.Endpoint = endpoint;
}
/// <summary>
/// Executes a "describe_keyspaces" over the connection, set the KeySpaces property with the returned value.
/// </summary>
/// <param name="cassandraClient">opened Thrift client</param>
public void Execute(Cassandra.Client cassandraClient)
{
THashSet<string> keySpaces = cassandraClient.describe_keyspaces();
this.KeySpaces = new HashSet<string>(keySpaces);
}
