//max memory to use for memcached items in megabytes, default is 64 MB
public MemCache(int memorySize)
{
//the goal is copy memcached.exe to %windir% folder, then from there, install memcached windows service so that the executable path of the service is %windir%\memcached.exe. Thus, PBS folder could be moved to anywhere else.
string strCmdResult;
try
{
//check if memcached.exe,msvcr71.dll exists in PBS folder
if (!File.Exists("memcached.exe"))
{
throw new Exception("memcached.exe doesn't exists!");
}
if (!File.Exists("msvcr71.dll"))
{
throw new Exception("msvcr71.dll doesn't exists!");
}
_memcachedInWinFolder = Environment.ExpandEnvironmentVariables("%SystemRoot%") + "\\memcached.exe";
//check if memcached.exe,pthreadGC2.dll exists in windows path
if (!File.Exists(_memcachedInWinFolder))
{
File.Copy("memcached.exe", _memcachedInWinFolder, true);
}
if (!File.Exists(Environment.ExpandEnvironmentVariables("%SystemRoot%") + "\\msvcr71.dll"))
{
File.Copy("msvcr71.dll", Environment.ExpandEnvironmentVariables("%SystemRoot%") + "\\msvcr71.dll", true);
}
//if windows service exists, check if the exe path of the service is in windows directory
if (Utility.IsWindowsServiceExisted("memcached Server"))
{
Utility.Cmd("sc qc \"memcached Server\"", false, out strCmdResult);
if (!strCmdResult.Contains("\\Windows\\"))
{
Utility.Cmd("sc delete \"memcached Server\"", false, out strCmdResult);//try to uninstall windows service
}
}
//check if windows service exists
if (!Utility.IsWindowsServiceExisted("memcached Server"))
{
Utility.Cmd(_memcachedInWinFolder + " -d install", false, out strCmdResult); //install memcached windows service
//google:使用cmd命令手动、自动启动和禁用服务
Utility.Cmd("sc config \"memcached Server\" start= demand", false, out strCmdResult); //set to 手动启动
}
Utility.Cmd(_memcachedInWinFolder + " -d stop", false, out strCmdResult);
_cmdMemcachedProcess = Utility.Cmd(_memcachedInWinFolder + " -m " + memorySize + " -d start", true, out strCmdResult);
string[] serverlist = { "127.0.0.1:11211" };
// initialize the pool for memcache servers
_pool = SockIOPool.GetInstance();
_pool.SetServers(serverlist);
_pool.InitConnections = 3;
_pool.MinConnections = 3;
_pool.MaxConnections = 5;
_pool.SocketConnectTimeout = 1000;
_pool.SocketTimeout = 3000;
_pool.MaintenanceSleep = 30;
_pool.Failover = true;
_pool.Nagle = false;
_pool.Initialize();
if (_pool.GetConnection(serverlist[0]) == null)
{
_pool.Shutdown();
Utility.Cmd("sc delete \"memcached Server\"", false, out strCmdResult);//try to uninstall windows service
throw new Exception("Can not managed to run 'memcached -d start' on your machine.");
}
MC = new MemcachedClient()
{
EnableCompression = false
};
//try to cache one object in memory to ensure memcached ability can be used
if (!MC.Set("test", DateTime.Now.ToString()))
{
throw new Exception("Can't managed to set key-value in memched!");
}
IsActived = true;
}
catch (Exception e)
{
IsActived = false;
Shutdown();//important
//copy error:"Access to the path 'C:\Windows\system32\memcached.exe' is denied."
if (e.Message.Contains("Access") && e.Message.Contains("denied"))
{
throw new Exception("Copy memcached.exe to '%windir%' failed.\r\nPlease reopen PortableBasemapServer by right clicking and select 'Run as Administrator'.");
}
throw new Exception(e.Message);
}
}