public static void Main(string[] args)
{
// Run MONITOR command on redis-cli to display the commands that are being executed
using (var redis = ConnectionMultiplexer.Connect("127.0.0.1"))
{
var redisDb = redis.GetDatabase();
var server = redis.GetServer("127.0.0.1:6379");
// Reset the key
redisDb.KeyDelete("statistics");
// Converts the script to a single line in order to be loaded to Redis
// Also does some StackExchange.Redis specific arguments replacement
LuaScript prepared = LuaScript.Prepare(File.ReadAllText("calculate_stats.lua"));
// Loads the script into the server and returns the SHA
LoadedLuaScript loaded = prepared.Load(server);
Console.WriteLine("Script SHA is " + BitConverter.ToString(loaded.Hash).Replace("-", String.Empty));
for (int i = 1; i <= 5; ++i)
{
loaded.Evaluate(redisDb, new { key = (RedisKey)"statistics", value = 10 * i });
}
}
}
public void SetQuerry(string _queryText)
{
queryText = _queryText;
prepared = LuaScript.Prepare(queryText);
loaded = prepared.Load(REDISConnector.REDISConnector.GetRedis().GetServer(server));
}
private LoadedLuaScript LoadLuaScriptForGetRule(string scriptUrl)
{
string script = File.ReadAllText(scriptUrl);
LuaScript luaScript = LuaScript.Prepare(script);
var endpoints = Connection.GetEndPoints();
var endpoint = endpoints[0];
IServer server = Connection.GetServer(endpoint);
return(luaScript.Load(server));
}
/// <summary>
/// Prepares the scripts.
/// </summary>
/// <param name="server">The server.</param>
/// <exception cref="System.ArgumentNullException">server</exception>
private void PrepareScripts(IServer server)
{
if (server == null)
{
throw new ArgumentNullException("server");
}
const string deleteKeyPrefixScript = "local keys = redis.call('keys', ARGV[1]) for i=1,#keys,5000 do redis.call('del', unpack(keys, i, math.min(i+4999, #keys))) end return keys";
LuaScript deleteKeyPrefixPreparedScript = LuaScript.Prepare(deleteKeyPrefixScript);
_deleteKeyPrefixScript = deleteKeyPrefixPreparedScript.Load(server);
}
public RedisDatabase(string name)
{
if (!EnvironmentSettings.Redis.TryGetDatabase(name, out EnvironmentSettings.RedisSettings.RedisDatabaseEntry database))
{
throw new Exception("Unknown redis database: " + name);
}
this.m_redis = ConnectionMultiplexer.Connect(database.ConnectionString);
this.m_database = this.m_redis.GetDatabase();
EndPoint[] endPoints = this.m_redis.GetEndPoints();
LuaScript luaScript = LuaScript.Prepare(@"
local value = redis.call('GET', KEYS[1])
if value == ARGV[1] then
return redis.call('DEL', KEYS[1]);
end
return false;");
for (int i = 0; i < endPoints.Length; i++)
{
byte[] hash = luaScript.Load(this.m_redis.GetServer(endPoints[i])).Hash;
if (hash.Length != 20)
{
throw new Exception("RedisDatabase.ctor: hash length != 20");
}
if (this.m_removeIfScript != null)
{
for (int j = 0; j < 20; j++)
{
if (this.m_removeIfScript[j] != hash[j])
{
throw new Exception("RedisDatabase.ctor: hash mismatch");
}
}
}
else
{
this.m_removeIfScript = hash;
}
}
}
