private static bool IsSetsidSupported()
{
if (Org.Apache.Hadoop.Util.Shell.Windows)
{
return(false);
}
Shell.ShellCommandExecutor shexec = null;
bool setsidSupported = true;
try
{
string[] args = new string[] { "setsid", "bash", "-c", "echo $$" };
shexec = new Shell.ShellCommandExecutor(args);
shexec.Execute();
}
catch (IOException)
{
Log.Debug("setsid is not available on this machine. So not using it.");
setsidSupported = false;
}
finally
{
// handle the exit code
if (Log.IsDebugEnabled())
{
Log.Debug("setsid exited with exit code " + (shexec != null ? shexec.GetExitCode(
) : "(null executor)"));
}
}
return(setsidSupported);
}
/// <exception cref="System.Exception"/>
public virtual void TestShellCommandTimeout()
{
if (Shell.Windows)
{
// setExecutable does not work on Windows
return;
}
string rootDir = new FilePath(Runtime.GetProperty("test.build.data", "/tmp")).GetAbsolutePath
();
FilePath shellFile = new FilePath(rootDir, "timeout.sh");
string timeoutCommand = "sleep 4; echo \"hello\"";
PrintWriter writer = new PrintWriter(new FileOutputStream(shellFile));
writer.WriteLine(timeoutCommand);
writer.Close();
FileUtil.SetExecutable(shellFile, true);
Shell.ShellCommandExecutor shexc = new Shell.ShellCommandExecutor(new string[] {
shellFile.GetAbsolutePath()
}, null, null, 100);
try
{
shexc.Execute();
}
catch (Exception)
{
}
//When timing out exception is thrown.
shellFile.Delete();
Assert.True("Script didnt not timeout", shexc.IsTimedOut());
}
/// <exception cref="System.Exception"/>
public virtual void TestShellCommandTimerLeak()
{
string[] quickCommand = new string[] { "/bin/sleep", "100" };
int timersBefore = CountTimerThreads();
System.Console.Error.WriteLine("before: " + timersBefore);
for (int i = 0; i < 10; i++)
{
Shell.ShellCommandExecutor shexec = new Shell.ShellCommandExecutor(quickCommand,
null, null, 1);
try
{
shexec.Execute();
Fail("Bad command should throw exception");
}
catch (Exception)
{
}
}
// expected
Thread.Sleep(1000);
int timersAfter = CountTimerThreads();
System.Console.Error.WriteLine("after: " + timersAfter);
Assert.Equal(timersBefore, timersAfter);
}
/// <summary>Static method to execute a shell command.</summary>
/// <remarks>
/// Static method to execute a shell command.
/// Covers most of the simple cases without requiring the user to implement
/// the <code>Shell</code> interface.
/// </remarks>
/// <param name="env">the map of environment key=value</param>
/// <param name="cmd">shell command to execute.</param>
/// <param name="timeout">time in milliseconds after which script should be marked timeout
/// </param>
/// <returns>the output of the executed command.o</returns>
/// <exception cref="System.IO.IOException"/>
public static string ExecCommand(IDictionary <string, string> env, string[] cmd, long
timeout)
{
Shell.ShellCommandExecutor exec = new Shell.ShellCommandExecutor(cmd, null, env,
timeout);
exec.Execute();
return(exec.GetOutput());
}
/// <exception cref="System.Exception"/>
public virtual void TestShellCommandExecutorToString()
{
Shell.ShellCommandExecutor sce = new Shell.ShellCommandExecutor(new string[] { "ls"
, "..", "arg 2" });
string command = sce.ToString();
AssertInString(command, "ls");
AssertInString(command, " .. ");
AssertInString(command, "\"arg 2\"");
}
