[libfcgi-procmanager-perl] 01/21: initial import of FCGI-ProcManager 0.10 from CPAN
Florian Schlichting
fsfs at moszumanska.debian.org
Mon Sep 18 21:29:18 UTC 2017
This is an automated email from the git hooks/post-receive script.
fsfs pushed a commit to annotated tag 0.21
in repository libfcgi-procmanager-perl.
commit 0baf5facb3b6bda24321b0ac45196fe407c68426
Author: James E Jurach Jr <muaddib at erf.net>
Date: Mon Nov 27 13:44:02 2000 -0800
initial import of FCGI-ProcManager 0.10 from CPAN
git-cpan-module: FCGI-ProcManager
git-cpan-version: 0.10
git-cpan-authorid: JURACH
git-cpan-file: authors/id/J/JU/JURACH/FCGI-ProcManager-0.10.tar.gz
---
COPYING | 515 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Changes | 0
MANIFEST | 9 +
MANIFEST.SKIP | 4 +
Makefile.PL | 22 +++
ProcManager.pm | 353 ++++++++++++++++++++++++++++++++++++++
README | 49 ++++++
TODO | 0
t/procmanager.t | 71 ++++++++
9 files changed, 1023 insertions(+)
diff --git a/COPYING b/COPYING
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index 0000000..c4792dd
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+++ b/COPYING
@@ -0,0 +1,515 @@
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diff --git a/Changes b/Changes
new file mode 100644
index 0000000..e69de29
diff --git a/MANIFEST b/MANIFEST
new file mode 100644
index 0000000..4c1b889
--- /dev/null
+++ b/MANIFEST
@@ -0,0 +1,9 @@
+Changes
+COPYING
+MANIFEST
+MANIFEST.SKIP
+Makefile.PL
+ProcManager.pm
+README
+TODO
+t/procmanager.t
diff --git a/MANIFEST.SKIP b/MANIFEST.SKIP
new file mode 100644
index 0000000..87e192e
--- /dev/null
+++ b/MANIFEST.SKIP
@@ -0,0 +1,4 @@
+Entries
+Root
+Repository
+Makefile
diff --git a/Makefile.PL b/Makefile.PL
new file mode 100644
index 0000000..7e2f807
--- /dev/null
+++ b/Makefile.PL
@@ -0,0 +1,22 @@
+# -*- perl -*-
+# Copyright (c) 2000, FundsXpress Financial Network, Inc.
+# This library is free software released "AS IS WITH ALL FAULTS"
+# and WITHOUT ANY WARRANTIES under the terms of the GNU Lesser
+# General Public License, Version 2.1, a copy of which can be
+# found in the "COPYING" file of this distribution.
+
+# $Id: Makefile.PL,v 1.2 2000/11/10 01:09:41 muaddib Exp $
+
+require 5.004;
+use strict;
+use ExtUtils::MakeMaker;
+
+WriteMakefile
+ (NAME => 'FCGI::ProcManager',
+ VERSION_FROM => 'ProcManager.pm', # finds $VERSION
+ DISTNAME => 'FCGI-ProcManager',
+ ($] >= 5.005 ?
+ (ABSTRACT => 'A perl-based FastCGI process manager',
+ AUTHOR => 'James E Jurach (muaddib at erf.net)') : ()),
+ dist => { COMPRESS => 'gzip', SUFFIX => 'gz' }
+ );
diff --git a/ProcManager.pm b/ProcManager.pm
new file mode 100644
index 0000000..14ef383
--- /dev/null
+++ b/ProcManager.pm
@@ -0,0 +1,353 @@
+package FCGI::ProcManager;
+
+# Copyright (c) 2000, FundsXpress Financial Network, Inc.
+# This library is free software released under the GNU Lesser General
+# Public License, Version 2.1. Please read the important licensing and
+# disclaimer information included below.
+
+# $Id: ProcManager.pm,v 1.5 2000/11/18 07:06:09 muaddib Exp $
+
+use strict;
+use vars qw(@valid_states);
+BEGIN {
+ $FCGI::ProcManager::VERSION = '0.10';
+ @valid_states = qw(managing handling idle);
+}
+
+=head1 NAME
+
+ FCGI::ProcManager - functions for managing FastCGI applications.
+
+=head1 SYNOPSIS
+
+ # In its simplest form.
+ use CGI::Fast;
+ use FCGI::ProcManager;
+ my $proc_manager = FCGI::ProcManager->new({n_processes=>10});
+ $proc_manager->manage();
+ while (my $cgi = CGI::Fast->new()) {
+ #...
+
+=head1 DESCRIPTION
+
+FCGI::ProcManager is used to serve as a FastCGI process manager.
+The parent uses fork(2) and wait(2) to manage a set of FastCGI application
+servers. more later.
+
+=head1 METHODS
+
+=head2 new
+
+=cut
+
+sub new {
+ my ($proto,$init) = @_;
+
+ my $this = {};
+ bless $this, ref($proto)||$proto;
+
+ $init and %$this = %$init;
+ defined $this->n_processes() or
+ $this->n_processes($ENV{PROCMANAGER_PROCESSES});
+
+ $this->{PIDS} = {};
+
+ return $this;
+}
+
+=head2 manage
+
+ global
+ () manage(int processes_to_spawn)
+
+DESCRIPTION:
+
+When this is called by a FastCGI script to manage application servers.
+
+=cut
+
+sub manage {
+ my ($this) = @_;
+
+ # initialize state and begin to handle signals.
+ $this->register_sig_handler();
+
+ # return right away if we are not managing any processes.
+ $this->n_processes() or return 1;
+
+ # call the (possibly overloaded) pre-manage initialization.
+ $this->state("managing");
+ $this->pre_manage_init();
+
+ # write out the pid file.
+ $this->write_pid_file();
+
+ my ($pid);
+ MANAGE: while (1) {
+
+ # do things that we only do when we're not already managing processes..
+ if (! %{$this->{PIDS}}) {
+ if (!$this->n_processes()) {
+ $this->remove_pid_file();
+ last;
+ } elsif ($this->want_to_die()) {
+ $this->remove_pid_file();
+ $this->exit("Manager $$ dying from death request.\n");
+ } elsif ($this->n_processes() < 0) {
+ $this->remove_pid_file();
+ $this->abort("Manager $$ dying from number of processes exception: ".
+ $this->n_processes(), -( 1 + $this->n_processes()));
+ }
+ }
+
+ # if we have fewer children than we want..
+ PIDS: while (keys(%{$this->{PIDS}}) < $this->n_processes()) {
+
+ # fork.
+ if ($pid = fork()) {
+ # the parent notes the child.
+ $this->warn("started process $pid\n");
+ $this->{PIDS}->{$pid} = { pid=>$pid };
+
+ } elsif (! defined $pid) {
+ # handle errors um gracefully.
+ $this->abort("fork: $!\n");
+
+ } else {
+ # the child returns to the calling application.
+ print "$$ lasting..\n";
+ last MANAGE;
+ }
+ }
+
+ # wait on the next child to die.
+ $this->abort("wait: $!\n") if ($pid = wait()) < 0;
+ $this->warn("Child process $pid died with exit status $?\n");
+ delete $this->{PIDS}->{$pid}
+ or $this->abort("Internal error: ".
+ "wait() returned non-existent pid=$pid??\n");
+
+ }# while 1
+
+ # call the (possibly overloaded) post-manage initialization.
+ $this->post_manage_init();
+
+ $this->state("idle");
+
+ print "$$ returning..\n";
+ # children and parent with n_processes == 0 return to calling app.
+ return 1;
+}
+
+=head2 pre_manage_init
+
+=cut
+
+sub pre_manage_init {
+ my ($this) = @_;
+}
+
+=head2 post_manage_init
+
+=cut
+
+sub post_manage_init {
+ my ($this) = @_;
+}
+
+=head2 pre_dispatch
+
+=cut
+
+sub pre_dispatch {
+ my ($this) = @_;
+ $this->state("handling");
+}
+
+=head2 post_dispatch
+
+=cut
+
+sub post_dispatch {
+ my ($this) = @_;
+ $this->want_to_die() and
+ $this->exit("Process $$ responding to death request.");
+ $this->state("idle");
+}
+
+=head2 write_pid_file
+
+=cut
+
+sub write_pid_file {
+ my ($this,$fname) = @_;
+ $fname ||= $this->pid_fname() or return;
+ if (!open PIDFILE, ">$fname") {
+ $this->warn("open: $fname: $!\n");
+ return;
+ }
+ print PIDFILE "$$\n";
+ close PIDFILE;
+}
+
+=head2 remove_pid_file
+
+=cut
+
+sub remove_pid_file {
+ my ($this,$fname) = @_;
+ $fname ||= $this->pid_fname() or return;
+ my $ret = unlink($fname) or $this->warn("unlink: $fname: $!\n");
+ return $ret;
+}
+
+=head2 gen_mutator
+
+=cut
+
+sub gen_mutator {
+ my ($this,$key,$value) = @_;
+ defined $value and $this->{$key} = $value;
+ return $this->{$key};
+}
+
+=head2 n_processes
+
+=head2 want_to_die
+
+=head2 no_signals
+
+=head2 pid_fname
+
+=cut
+
+sub n_processes { shift->gen_mutator("n_processes", at _); }
+sub want_to_die { shift->gen_mutator("want_to_die", at _); }
+sub no_signals { shift->gen_mutator("no_signals", at _); }
+sub pid_fname { shift->gen_mutator("pid_fname", at _); }
+
+=head2 state
+
+=cut
+
+sub state {
+ my ($this,$new_state) = @_;
+ if (defined $new_state) {
+ if (!grep {$new_state eq $_} @valid_states) {
+ $this->abort("Invalid state: $new_state\n");
+ }
+ $this->{state} = $new_state;
+ }
+ defined $this->{state} or $this->{state} = "idle";
+ return $this->{state};
+}
+
+=head2 register_sig_handler
+
+=cut
+
+sub register_sig_handler {
+ my ($this) = @_;
+ return if $this->no_signals();
+ $SIG{TERM} = sub { $this->sig_method(@_) };
+ $SIG{HUP} = sub { $this->sig_method(@_) };
+}
+
+=head2 unregister_sig_handler
+
+=cut
+
+sub unregister_sig_handler {
+ my ($this) = @_;
+ return if $this->no_signals();
+ undef $SIG{TERM};
+ undef $SIG{HUP};
+}
+
+=head2 sig_method
+
+=cut
+
+sub sig_method {
+ my ($this,$name) = @_;
+ if ($name eq "TERM") {
+ if ($this->state() eq "idle") {
+ $this->exit("Process $$ dying after receiving SIG$name.\n");
+ } else {
+ $this->warn("Process $$ received SIG$name. Cleaning up.\n");
+ $this->want_to_die(1);
+ $this->n_processes(-1);
+ # is the following necessary?
+ kill $name, keys %{$this->{PIDS}};
+ }
+ } else {
+ $this->warn("I don't know what to do with $name yet.. ignoring?\n");
+ }
+}
+
+=head2 warn
+
+=cut
+
+sub warn {
+ my ($this,$msg) = @_;
+ print STDERR $msg;
+}
+
+=head2 exit
+
+=cut
+
+sub exit {
+ my ($this,$msg,$n) = @_;
+ $n ||= 0;
+ $this->warn($msg);
+ $@ = $msg;
+ exit $n;
+}
+
+=head2 abort
+
+=cut
+
+sub abort {
+ my ($this,$msg,$n) = @_;
+ $n ||= 1;
+ $this->exit($msg,1);
+}
+
+1;
+__END__
+
+=head1 BUGS
+
+No known bugs, but this does not mean no bugs exist.
+
+=head1 SEE ALSO
+
+L<FCGI>.
+
+=head1 COPYRIGHT
+
+ FCGI-ProcManager - A Perl FCGI Process Manager
+ Copyright (c) 2000, FundsXpress Financial Network, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ BECAUSE THIS LIBRARY IS LICENSED FREE OF CHARGE, THIS LIBRARY IS
+ BEING PROVIDED "AS IS WITH ALL FAULTS," WITHOUT ANY WARRANTIES
+ OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT
+ LIMITATION, ANY IMPLIED WARRANTIES OF TITLE, NONINFRINGEMENT,
+ MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, AND THE
+ ENTIRE RISK AS TO SATISFACTORY QUALITY, PERFORMANCE, ACCURACY,
+ AND EFFORT IS WITH THE YOU. See the GNU Lesser General Public
+ License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+=cut
diff --git a/README b/README
new file mode 100644
index 0000000..7ca6c0c
--- /dev/null
+++ b/README
@@ -0,0 +1,49 @@
+$Id: README,v 1.3 2000/11/15 20:14:56 muaddib Exp $
+
+General Information
+-------------------
+
+FCGI-ProcManager is a process manager for FCGI.
+
+more info later.
+
+Installation
+------------
+
+FCGI-ProcManager is expected to compile and run on all systems which
+support normal UNIX fork/wait semantics. FCGI-ProcManager is known to
+compile and run on the following systems:
+
+ - Linux (2.0.x, 2.1.x, 2.2.x, 2.3.x)
+ - Solaris (2.5.1, 2.6, 2.7)
+ - Digital UNIX 4.0
+ - NetBSD 1.4
+
+Full installation instructions can be found in the INSTALL file.
+To build,
+
+ perl Makefile.PL
+ make all
+ make install
+
+Usage
+-----
+
+More info here later.
+
+
+Copyright
+---------
+Copyright (c) 2000, FundsXpress Financial Network, Inc.
+
+
+Disclaimer
+----------
+
+This library is free software released "AS IS WITH ALL FAULTS"
+and WITHOUT ANY WARRANTIES under the terms of the GNU Lesser
+General Public License, Version 2.1, a copy of which can be
+found in the "COPYING" file of this distribution.
+
+
+James Jurach <muaddib at erf.net>
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..e69de29
diff --git a/t/procmanager.t b/t/procmanager.t
new file mode 100644
index 0000000..436a2a8
--- /dev/null
+++ b/t/procmanager.t
@@ -0,0 +1,71 @@
+# -*- perl -*-
+# Copyright (c) 2000, FundsXpress Financial Network, Inc.
+# This library is free software released "AS IS WITH ALL FAULTS"
+# and WITHOUT ANY WARRANTIES under the terms of the GNU Lesser
+# General Public License, Version 2.1, a copy of which can be
+# found in the "COPYING" file of this distribution.
+
+# $Id: procmanager.t,v 1.2 2000/11/10 01:09:48 muaddib Exp $
+
+use strict;
+use Test;
+
+BEGIN { plan tests => 8; }
+
+use FCGI::ProcManager;
+
+my $m;
+
+ok $m = FCGI::ProcManager->new();
+ok $m->state() eq "idle";
+
+ok $m->n_processes(100) == 100;
+ok $m->n_processes(2) == 2;
+ok $m->n_processes(0) == 0;
+
+ok $m->manage();
+ok $m->want_to_die(1);
+
+# i'm not sure how to test these
+#eval { $m->manage(); };
+#ok $@ =~ /dying from death request/;
+#undef $@;
+
+ok $m->want_to_die(0) == 0;
+
+#ok $m->n_processes(-3);
+#eval { $m->manage(); };
+#ok $@ =~ /dying from number of processes exception: -3/;
+#undef $@;
+
+$m->n_processes(1);
+
+#$m->manage();
+#sample_handler($m);
+
+exit 0;
+
+sub sample_handler {
+ my ($m) = @_;
+
+ while (1) {
+ $m->state("handling");
+
+ # Simulate a request dispatch.
+ my $t = int(rand(6)+10);
+ print "$$ sleeping $t..\n";
+ while (my $nslept = sleep $t) {
+ $t -= $nslept;
+ last unless $t;
+ }
+
+ $m->want_to_die()
+ and $m->exit("Process $$ dying from SIGTERM after cleanup.\n");
+ $m->state("idle");
+
+ # Simulate blocking for a request.
+ my $t1 = int(rand(5)+3);
+ print "$$ waiting for $t1..\n";
+ sleep $t1;
+ }
+}
--
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