Question

My requirements are as follows:

1. Once the application starts the PostgreSQL service will be started by the application
2. Once the application closes the PostgreSQL service will be closed by the application
3. … so i will be taking care of the PostgreSQL setup and running the scripts and starting the service etc

How i am doing this at present is:

1. when i start PostgreSQL in a new process i am redirecting the RedirectStandardError and RedirectStandardOutput, it is a silent start, user cannot see the command window etc

The problem is,

• When I coded this I looked for message strings and only supported English. In other words, I used to look for the string success in RedirectStandardOutput but now we are supporting multiple languages so the comparison fails.

Is there any way i can find out whether PostgreSQL set up was successfully started and PostgreSQL service is running or not?

I am starting PostgreSQL by calling pg_ctl.exe in separate process.

Answer 1

(we are doing something similar)
you star the Postgres service by using this batch file

"C:\Program Files\PostgreSQL\9.0\bin\pg_ctl.exe"  -D "C:\Program Files\PostgreSQL\9.0\data" start

and for [Stopping] the service

"C:\Program Files\PostgreSQL\9.0\bin\pg_ctl.exe"  -D "C:\Program Files\PostgreSQL\9.0\data" stop

where C:\Program Files\PostgreSQL\9.0\bin\pg_ctl.exe is the location of your installation of PostgreSQl which u can get from

    HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-9.0

Now on running the Batch file to check if the service is indeed running you can use
this code from Process running
check for postgres.exe if its running or not.

Also 1. checking-if-windows-application-is-running
2. how-can-i-know-if-a-process-is-running

  public bool IsProcessOpen(string name)
    {
 //here we're going to get a list of all running processes on
 //the computer
 foreach (Process clsProcess in Process.GetProcesses()) {
    //now we're going to see if any of the running processes
    //match the currently running processes. Be sure to not
    //add the .exe to the name you provide, i.e: NOTEPAD,
    //not NOTEPAD.EXE or false is always returned even if
    //notepad is running.
    //Remember, if you have the process running more than once, 
    //say IE open 4 times the loop thr way it is now will close all 4,
    //if you want it to just close the first one it finds
    //then add a return; after the Kill
    if (clsProcess.ProcessName.Contains(name))
    {
        //if the process is found to be running then we
        //return a true
        return true;
    }
}
//otherwise we return a false
return false;
}