/// <summary>
/// Retrieves stats for passed in servers (or all servers).
///
/// Returns a map keyed on the servername.
/// The value is another map which contains stats
/// with stat name as key and value as value.
/// </summary>
/// <param name="servers">string array of servers to retrieve stats from, or all if this is null</param>
/// <returns>Stats map</returns>
public Hashtable Stats(ArrayList servers)
{
// get SockIOPool instance
SockIOPool pool = SockIOPool.GetInstance(_poolName);
// return false if unable to get SockIO obj
if (pool == null)
{
return(null);
}
// get all servers and iterate over them
if (servers == null)
{
servers = pool.Servers;
}
// if no servers, then return early
if (servers == null || servers.Count <= 0)
{
return(null);
}
// array of stats Hashtables
Hashtable statsMaps = new Hashtable();
for (int i = 0; i < servers.Count; i++)
{
SockIO sock = pool.GetConnection((string)servers[i]);
if (sock == null)
{
continue;
}
// build command
string command = "stats\r\n";
try
{
sock.Write(UTF8Encoding.UTF8.GetBytes(command));
sock.Flush();
// map to hold key value pairs
Hashtable stats = new Hashtable();
// loop over results
while (true)
{
string line = sock.ReadLine();
if (line.StartsWith(STATS))
{
string[] info = line.Split(' ');
string key = info[1];
string val = info[2];
stats[key] = val;
}
else if (END == line)
{
break;
}
statsMaps[servers[i]] = stats;
}
}
catch (IOException e)
{
try
{
sock.TrueClose();
}
catch (IOException)
{
}
sock = null;
}
if (sock != null)
{
sock.Close();
}
}
return(statsMaps);
}
/// <summary>
/// Invalidates the entire cache.
///
/// Will return true only if succeeds in clearing all servers.
/// If pass in null, then will try to flush all servers.
/// </summary>
/// <param name="servers">optional array of host(s) to flush (host:port)</param>
/// <returns>success true/false</returns>
public bool FlushAll(ArrayList servers)
{
// get SockIOPool instance
SockIOPool pool = SockIOPool.GetInstance(_poolName);
// return false if unable to get SockIO obj
if (pool == null)
{
return(false);
}
// get all servers and iterate over them
if (servers == null)
{
servers = pool.Servers;
}
// if no servers, then return early
if (servers == null || servers.Count <= 0)
{
return(false);
}
bool success = true;
for (int i = 0; i < servers.Count; i++)
{
SockIO sock = pool.GetConnection((string)servers[i]);
if (sock == null)
{
success = false;
continue;
}
// build command
string command = "flush_all\r\n";
try
{
sock.Write(UTF8Encoding.UTF8.GetBytes(command));
sock.Flush();
// if we get appropriate response back, then we return true
string line = sock.ReadLine();
success = (OK == line)
? success && true
: false;
}
catch (IOException e)
{
try
{
sock.TrueClose();
}
catch (IOException ioe)
{
}
success = false;
sock = null;
}
if (sock != null)
{
sock.Close();
}
}
return(success);
}