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Diff for /loncom/Attic/lonc between versions 1.38 and 1.48

version 1.38, 2002/04/04 22:04:54 version 1.48, 2003/03/18 22:51:03
Line 37 Line 37
 # 6/4/99,6/5,6/7,6/8,6/9,6/10,6/11,6/12,7/14,7/19,  # 6/4/99,6/5,6/7,6/8,6/9,6/10,6/11,6/12,7/14,7/19,
 # 10/8,10/9,10/15,11/18,12/22,  # 10/8,10/9,10/15,11/18,12/22,
 # 2/8,7/25 Gerd Kortemeyer  # 2/8,7/25 Gerd Kortemeyer
 # 12/05 Scott Harrison  
 # 12/05 Gerd Kortemeyer  # 12/05 Gerd Kortemeyer
 # YEAR=2001  # YEAR=2001
 # 01/10/01 Scott Harrison  
 # 03/14/01,03/15,06/12,11/26,11/27,11/28 Gerd Kortemeyer  # 03/14/01,03/15,06/12,11/26,11/27,11/28 Gerd Kortemeyer
 # 12/20 Scott Harrison  
 # YEAR=2002  # YEAR=2002
 # 2/19/02,02/22/02,02/25/02 Gerd Kortemeyer  # 2/19/02,02/22/02,02/25/02 Gerd Kortemeyer
 # 3/07/02 Ron Fox   # 3/07/02 Ron Fox 
 # based on nonforker from Perl Cookbook  # based on nonforker from Perl Cookbook
 # - server who multiplexes without forking  # - server who multiplexes without forking
   
   use lib '/home/httpd/lib/perl/';
   use LONCAPA::Configuration;
   
 use POSIX;  use POSIX;
 use IO::Socket;  use IO::Socket;
 use IO::Select;  use IO::Select;
Line 71  $DEBUG = 0;   # Set to 1 for annoyingly Line 71  $DEBUG = 0;   # Set to 1 for annoyingly
 $SIG{QUIT}=\&catchexception;  $SIG{QUIT}=\&catchexception;
 $SIG{__DIE__}=\&catchexception;  $SIG{__DIE__}=\&catchexception;
   
 # ------------------------------------ Read httpd access.conf and get variables  # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
 &status("Read access.conf");  &status("Read loncapa.conf and loncapa_apache.conf");
 open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";  my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
   my %perlvar=%{$perlvarref};
 while ($configline=<CONFIG>) {  undef $perlvarref;
     if ($configline =~ /PerlSetVar/) {  
  my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);  
         chomp($varvalue);  
         $perlvar{$varname}=$varvalue;  
     }  
 }  
 close(CONFIG);  
   
 # ----------------------------- Make sure this process is running from user=www  # ----------------------------- Make sure this process is running from user=www
 &status("Check user ID");  &status("Check user ID");
Line 175  $SIG{USR1} = \&USRMAN; Line 168  $SIG{USR1} = \&USRMAN;
 # And maintain the population.  # And maintain the population.
 while (1) {  while (1) {
     my $deadpid = wait; # Wait for the next child to die.      my $deadpid = wait; # Wait for the next child to die.
                                     # See who died and start new one                                  # See who died and start new one
                                   # or a signal (e.g. USR1 for restart).
                                   # if a signal, the wait will fail
                                   # This is ordinarily detected by
                                   # checking for the existence of the
                                   # pid index inthe children hash since
                                   # the return value from a failed wait is -1
                                   # which is an impossible PID.
     &status("Woke up");      &status("Woke up");
     my $skipping='';      my $skipping='';
   
Line 255  unlink($port); Line 255  unlink($port);
     @allbuffered=grep /\.$conserver$/, readdir DIRHANDLE;      @allbuffered=grep /\.$conserver$/, readdir DIRHANDLE;
     closedir(DIRHANDLE);      closedir(DIRHANDLE);
     my $dfname;      my $dfname;
     foreach (@allbuffered) {      foreach (sort @allbuffered) {
         &status("Sending delayed: $_");          &status("Sending delayed: $_");
         $dfname="$path/$_";          $dfname="$path/$_";
         if($DEBUG) { &logthis('Sending '.$dfname); }          if($DEBUG) { &logthis('Sending '.$dfname); }
Line 325  tie %ready, 'Tie::RefHash'; Line 325  tie %ready, 'Tie::RefHash';
   
 # Main loop: check reads/accepts, check writes, check ready to process  # Main loop: check reads/accepts, check writes, check ready to process
   
 status("Main loop");  status("Main loop $conserver");
 while (1) {  while (1) {
     my $client;      my $client;
     my $rv;      my $rv;
Line 365  while (1) { Line 365  while (1) {
  }   }
  $servers{$client->fileno} = $client;   $servers{$client->fileno} = $client;
  nonblock($client);   nonblock($client);
    $client->sockopt(SO_KEEPALIVE, 1);# Enable monitoring of
                                     # connection liveness.
     }      }
     HandleInput($infdset, \%servers, \%inbuffer, \%outbuffer, \%ready);      HandleInput($infdset, \%servers, \%inbuffer, \%outbuffer, \%ready);
     HandleOutput($outfdset, \%servers, \%outbuffer, \%inbuffer,      HandleOutput($outfdset, \%servers, \%outbuffer, \%inbuffer,
Line 700  sub openremote { Line 702  sub openremote {
   
     my $conserver=shift;      my $conserver=shift;
   
 &status("Opening TCP");  &status("Opening TCP $conserver");
     my $st=120+int(rand(240)); # Sleep before opening:      my $st=120+int(rand(240)); # Sleep before opening:
   
 unless (  unless (
Line 720  unless ( Line 722  unless (
 &logthis("<font color=green>INFO Connected to $conserver, initing </font>");  &logthis("<font color=green>INFO Connected to $conserver, initing </font>");
 &status("Init dialogue: $conserver");  &status("Init dialogue: $conserver");
   
     $answer = londtransaction($remotesock, "init", 60);      $answer = londtransaction($remotesock, "init:$conserver", 60);
     chomp($answer);      chomp($answer);
     $answer = londtransaction($remotesock, $answer, 60);      $answer = londtransaction($remotesock, $answer, 60);
     chomp($answer);      chomp($answer);
Line 740  if ($answer ne 'ok') { Line 742  if ($answer ne 'ok') {
 }  }
   
 sleep 5;  sleep 5;
 &status("Ponging");  &status("Ponging $conserver");
 print $remotesock "pong\n";  print $remotesock "pong\n";
 $answer=<$remotesock>;  $answer=<$remotesock>;
 chomp($answer);  chomp($answer);
Line 870  sub checkchildren { Line 872  sub checkchildren {
   
 sub USRMAN {  sub USRMAN {
     &logthis("USR1: Trying to establish connections again");      &logthis("USR1: Trying to establish connections again");
     %childatt=();      #
     &checkchildren();      #  It is really important not to just clear the childatt hash or we will
       #  lose all memory of the children.  What we really want to do is this:
       #  For each index where childatt is >= $childmaxattempts
       #  Zero the associated counter and do a make_child for the host.
       #  Regardles, the childatt entry is zeroed:
       my $host;
       foreach $host (keys %childatt) {
    if ($childatt{$host} >= $childmaxattempts) {
       $childatt{$host} = 0;
       &logthis("<font color=green>INFO: Restarting child for server: "
        .$host."</font>\n");
       make_new_child($host);
    }
    else {
       $childatt{$host} = 0;
    }
       }
       &checkchildren(); # See if any children are still dead...
 }  }
   
 # -------------------------------------------------- Non-critical communication  # -------------------------------------------------- Non-critical communication
Line 956  sub londtransaction { Line 975  sub londtransaction {
     alarm(0);      alarm(0);
  };   };
     } else {      } else {
  if($DEBUG) {   &logthis("lonc - suiciding on send Timeout");
     &logthis("Timeout on send in londtransaction");   die("lonc - suiciding on send Timeout");
  }  
     }      }
     if( ($@ =~ /timeout/)  && ($DEBUG)) {      if ($@ =~ /timeout/) {
  &logthis("Timeout on receive in londtransaction");   &logthis("lonc - suiciding on send Timeout");
    die("lonc - suiciding on send Timeout");
     }      }
     #      #
     # Restore the initial sigmask set.      # Restore the initial sigmask set.
Line 1016  sub status { Line 1035  sub status {
     my $now=time;      my $now=time;
     my $local=localtime($now);      my $local=localtime($now);
     $status=$local.': '.$what;      $status=$local.': '.$what;
       $0='lonc: '.$what.' '.$local;
 }  }
   
   
Removed from v.1.38  
changed lines
  Added in v.1.48

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