Build.PL1006642645451113260624 313013023641473 16225 0ustar00kazuhokazuho000000000000Server-Starter-0.33# ========================================================================= # THIS FILE IS AUTOMATICALLY GENERATED BY MINILLA. # DO NOT EDIT DIRECTLY. # ========================================================================= use 5.008_001; use strict; use warnings; use utf8; use builder::MyBuilder; use File::Basename; use File::Spec; my %args = ( license => 'perl_5', dynamic_config => 0, configure_requires => { 'Module::Build' => '0.4005', }, requires => { 'perl' => '5.008', }, recommends => { }, suggests => { }, build_requires => { }, test_requires => { 'IO::Socket::IP' => '0', 'Net::EmptyPort' => '0', 'Test::Requires' => '0', 'Test::SharedFork' => '0', 'Test::TCP' => '2.08', }, name => 'Server-Starter', module_name => 'Server::Starter', allow_pureperl => 0, script_files => [glob('script/*'), glob('bin/*')], c_source => [qw()], PL_files => {}, test_files => ((-d '.git' || $ENV{RELEASE_TESTING}) && -d 'xt') ? 't/ xt/' : 't/', recursive_test_files => 1, ); if (-d 'share') { $args{share_dir} = 'share'; } my $builder = builder::MyBuilder->subclass( class => 'MyBuilder', code => q{ sub ACTION_distmeta { die "Do not run distmeta. Install Minilla and `minil install` instead.\n"; } sub ACTION_installdeps { die "Do not run installdeps. Run `cpanm --installdeps .` instead.\n"; } } )->new(%args); $builder->create_build_script(); Changes1006642645451113260624 722713023641473 16237 0ustar00kazuhokazuho000000000000Server-Starter-0.33Revision history for Perl extension Server::Starter. 0.33 2016-12-13T00:37:49Z - do not kill old worker too early (thanks to Xuanzhong Wei) #45 - allow use of `--enable-auto-restart` without an argument (thanks to Slaven Rezic) #41 0.32 2015-08-25T02:09:18Z - fix compatibility issue on Solaris (thanks to Syohei YOSHIDA) #40 0.31 2015-07-20T02:38:57Z - do not remove the socket file when becoming a daemon (thanks to andyjones) #34 #36 - emit name of the directory to which it failed to chdir(2) (thanks to tokuhirom) #33 0.30 2015-06-05T05:28:43Z - unlink the status file only when created by itself (thanks to tokuhirom) #32 - redo #26 (thanks to tokuhirom) #31 0.29 2015-06-04T06:45:26Z - build should fail on Windows (thanks to chorny) #26 - add `--stop` option (thanks to tokuhirom) #28 - do not close STDIN in case the listening port is mapped to fd zero (thanks to tokuhirom) #29 #24 - reopen STDIN to suppress unnecessary warnings (thanks to touhirom) #30 0.28 2015-05-28T22:08:37Z - add `--port=[host:]port=fd` option for specifying the file descriptor number (thanks to tokuhirom) #24 0.27 2015-04-28T01:02:28Z - revert 0.26 so that the install script can update the shebang (thanks to miyagawa) #22 - modernize the build tool (thanks to miyagawa) #23 0.26 - `start_server` command uses perl found in $PATH instead of /usr/bin/perl #21 0.25 - fix `already in use` error if the program is restarted (regression in 0.21) #18 - tests now pass on environments wo. IPv6 support #19 0.24 - introduce --daemonize option (#18 #6) - fix bug that causes a infinite loop in shutdown (amends #14) 0.23 - set IPV6_V6ONLY for socket bound to an IPv6 address (#16) 0.22 - support for IPv6 (#16) - include repository URL in META.yml (#15; thanks to ether) 0.21 - remove dependency against non-standard modules (#14) 0.19 - reimplement changes in 0.15, 0.16 for stability (#13) - update inc/Module/Install 0.17 - add option: --backlog to change the backlog size (default: SOMAXCONN) (thanks to Yuryu) 0.16 - [bugfix] unset the environment variable when a file is removed from the directory specified by --envdir 0.15 - added option: --envdir for reloading configuration (thanks to limitusus) - added options: --enable-auto-restart and interval for periodical automatic restarting (thanks to limitusus) - added option: --kill-old-delay for delaying SIGTERM (thanks to limitusus) 0.14 - fix regression in 0.13; start_server wo. "--dir" was causing errors 0.13 - add option: --dir (thanks to kazeburo) 0.12 - bugfix: support for programs with whitespaces (thanks to clkao) - add option: --signal-on-term (thanks to miyagawa) 0.11 - remove unix socket file on shutdown 0.10 - support for unix sockets with --path option 0.09 - added options: --signal-on-hup, --status-file, --restart 0.08 - added --pid-file option 0.07 Sat May 08 14:00:00 2010 - --port option is now omittable (so daemons _not_ binding to TCP ports (like FCGI servers binding to unix domain sockets) can be hot-deployied using Server::Starter) 0.06 Sat Jan 02 10:26:00 2010 - bugfix: start_server did not shutdown upon receiving SIGINT while the worker is failing to start up 0.05 Tue Oct 13 20:30:00 2009 - use $^X in tests (or tests will fail on hosts using a different installation of perl from one installed to /usr/bin/perl) 0.04 Fri Oct 09 19:25:00 2009 - signals received just after spawning worker process were dismissed (thanks to kazeburo for reporting and helping fix the problem) 0.03 Thu Sep 24 20:00:00 2009 - require 5.008 - require Test::TCP 0.11 to satisfy the dependencies 0.02 Thu Sep 09 17:06:00 2009 - add README, Changes 0.01 Thu Sep 09 17:00:00 2009 - initial version LICENSE1006642645451113260624 4364713023641473 15777 0ustar00kazuhokazuho000000000000Server-Starter-0.33This software is copyright (c) 2015 by Kazuho Oku. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. Terms of the Perl programming language system itself a) the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version, or b) the "Artistic License" --- The GNU General Public License, Version 1, February 1989 --- This software is Copyright (c) 2015 by Kazuho Oku. This is free software, licensed under: The GNU General Public License, Version 1, February 1989 GNU GENERAL PUBLIC LICENSE Version 1, February 1989 Copyright (C) 1989 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The license agreements of most software companies try to keep users at the mercy of those companies. By contrast, our General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. The General Public License applies to the Free Software Foundation's software and to any other program whose authors commit to using it. You can use it for your programs, too. When we speak of free software, we are referring to freedom, not price. Specifically, the General Public License is designed to make sure that you have the freedom to give away or sell copies of free software, that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of a such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must tell them their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License Agreement applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any work containing the Program or a portion of it, either verbatim or with modifications. Each licensee is addressed as "you". 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this General Public License and to the absence of any warranty; and give any other recipients of the Program a copy of this General Public License along with the Program. You may charge a fee for the physical act of transferring a copy. 2. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 19yy This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) 19xx name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (a program to direct compilers to make passes at assemblers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice That's all there is to it! --- The Artistic License 1.0 --- This software is Copyright (c) 2015 by Kazuho Oku. This is free software, licensed under: The Artistic License 1.0 The Artistic License Preamble The intent of this document is to state the conditions under which a Package may be copied, such that the Copyright Holder maintains some semblance of artistic control over the development of the package, while giving the users of the package the right to use and distribute the Package in a more-or-less customary fashion, plus the right to make reasonable modifications. Definitions: - "Package" refers to the collection of files distributed by the Copyright Holder, and derivatives of that collection of files created through textual modification. - "Standard Version" refers to such a Package if it has not been modified, or has been modified in accordance with the wishes of the Copyright Holder. - "Copyright Holder" is whoever is named in the copyright or copyrights for the package. - "You" is you, if you're thinking about copying or distributing this Package. - "Reasonable copying fee" is whatever you can justify on the basis of media cost, duplication charges, time of people involved, and so on. (You will not be required to justify it to the Copyright Holder, but only to the computing community at large as a market that must bear the fee.) - "Freely Available" means that no fee is charged for the item itself, though there may be fees involved in handling the item. It also means that recipients of the item may redistribute it under the same conditions they received it. 1. You may make and give away verbatim copies of the source form of the Standard Version of this Package without restriction, provided that you duplicate all of the original copyright notices and associated disclaimers. 2. You may apply bug fixes, portability fixes and other modifications derived from the Public Domain or from the Copyright Holder. A Package modified in such a way shall still be considered the Standard Version. 3. 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You may distribute the programs of this Package in object code or executable form, provided that you do at least ONE of the following: a) distribute a Standard Version of the executables and library files, together with instructions (in the manual page or equivalent) on where to get the Standard Version. b) accompany the distribution with the machine-readable source of the Package with your modifications. c) accompany any non-standard executables with their corresponding Standard Version executables, giving the non-standard executables non-standard names, and clearly documenting the differences in manual pages (or equivalent), together with instructions on where to get the Standard Version. d) make other distribution arrangements with the Copyright Holder. 5. You may charge a reasonable copying fee for any distribution of this Package. You may charge any fee you choose for support of this Package. You may not charge a fee for this Package itself. However, you may distribute this Package in aggregate with other (possibly commercial) programs as part of a larger (possibly commercial) software distribution provided that you do not advertise this Package as a product of your own. 6. The scripts and library files supplied as input to or produced as output from the programs of this Package do not automatically fall under the copyright of this Package, but belong to whomever generated them, and may be sold commercially, and may be aggregated with this Package. 7. C or perl subroutines supplied by you and linked into this Package shall not be considered part of this Package. 8. The name of the Copyright Holder may not be used to endorse or promote products derived from this software without specific prior written permission. 9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. The End META.json1006642645451113260624 566013023641473 16364 0ustar00kazuhokazuho000000000000Server-Starter-0.33{ "abstract" : "a superdaemon for hot-deploying server programs", "author" : [ "Kazuho Oku" ], "dynamic_config" : 0, "generated_by" : "Minilla/v3.0.6", "license" : [ "perl_5" ], "meta-spec" : { "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec", "version" : "2" }, "name" : "Server-Starter", "no_index" : { "directory" : [ "t", "xt", "inc", "share", "eg", "examples", "author", "builder" ] }, "prereqs" : { "configure" : { "requires" : { "Module::Build" : "0.4005" } }, "develop" : { "requires" : { "Test::CPAN::Meta" : "0", "Test::MinimumVersion::Fast" : "0.04", "Test::PAUSE::Permissions" : "0.04", "Test::Pod" : "1.41", "Test::Spellunker" : "v0.2.7" } }, "runtime" : { "requires" : { "perl" : "5.008" } }, "test" : { "requires" : { "IO::Socket::IP" : "0", "Net::EmptyPort" : "0", "Test::Requires" : "0", "Test::SharedFork" : "0", "Test::TCP" : "2.08" } } }, "provides" : { "Server::Starter" : { "file" : "lib/Server/Starter.pm", "version" : "0.33" }, "Server::Starter::Guard" : { "file" : "lib/Server/Starter/Guard.pm" } }, "release_status" : "stable", "resources" : { "bugtracker" : { "web" : "https://github.com/kazuho/p5-Server-Starter/issues" }, "homepage" : "https://github.com/kazuho/p5-Server-Starter", "repository" : { "url" : "git://github.com/kazuho/p5-Server-Starter.git", "web" : "https://github.com/kazuho/p5-Server-Starter" } }, "version" : "0.33", "x_contributors" : [ "kazuho ", "yappo ", "Robert Buels ", "chromatic ", "Chia-liang Kao ", "Masahiro Nagano ", "Tomoya Kabe ", "Haruka Iwao ", "Kazuho Oku ", "Karen Etheridge ", "Bugdebugger ", "Tatsuhiko Miyagawa ", "Alexandr Ciornii ", "Tokuhiro Matsuno ", "Andy Jones ", "Arthur Axel 'fREW' Schmidt ", "Syohei YOSHIDA ", "Slaven Rezic ", "Mikhail Ivanov ", "Xuanzhong Wei ", "Kazuho Oku " ], "x_serialization_backend" : "JSON::PP version 2.27300" } README.md1006642645451113260624 477013023641473 16223 0ustar00kazuhokazuho000000000000Server-Starter-0.33# NAME Server::Starter - a superdaemon for hot-deploying server programs # SYNOPSIS # from command line % start_server --port=80 my_httpd # in my_httpd use Server::Starter qw(server_ports); my $listen_sock = IO::Socket::INET->new( Proto => 'tcp', ); $listen_sock->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind to listening socket:$!"; while (1) { if (my $conn = $listen_sock->accept) { .... } } # DESCRIPTION It is often a pain to write a server program that supports graceful restarts, with no resource leaks. [Server::Starter](https://metacpan.org/pod/Server::Starter) solves the problem by splitting the task into two. One is [start\_server](https://metacpan.org/pod/start_server), a script provided as a part of the module, which works as a superdaemon that binds to zero or more TCP ports or unix sockets, and repeatedly spawns the server program that actually handles the necessary tasks (for example, responding to incoming connections). The spawned server programs under [Server::Starter](https://metacpan.org/pod/Server::Starter) call accept(2) and handle the requests. To gracefully restart the server program, send SIGHUP to the superdaemon. The superdaemon spawns a new server program, and if (and only if) it starts up successfully, sends SIGTERM to the old server program. By using [Server::Starter](https://metacpan.org/pod/Server::Starter) it is much easier to write a hot-deployable server. Following are the only requirements a server program to be run under [Server::Starter](https://metacpan.org/pod/Server::Starter) should conform to: - receive file descriptors to listen to through an environment variable - perform a graceful shutdown when receiving SIGTERM A Net::Server personality that can be run under [Server::Starter](https://metacpan.org/pod/Server::Starter) exists under the name [Net::Server::SS::PreFork](https://metacpan.org/pod/Net::Server::SS::PreFork). # METHODS - server\_ports Returns zero or more file descriptors on which the server program should call accept(2) in a hashref. Each element of the hashref is: (host:port|port|path\_of\_unix\_socket) => file\_descriptor. - start\_server Starts the superdaemon. Used by the `start_server` script. # AUTHOR Kazuho Oku # SEE ALSO [Net::Server::SS::PreFork](https://metacpan.org/pod/Net::Server::SS::PreFork) # LICENSE This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. MyBuilder.pm1006642645451113260624 35413023641473 20576 0ustar00kazuhokazuho000000000000Server-Starter-0.33/builderpackage builder::MyBuilder; use strict; use warnings; use base qw(Module::Build); # https://github.com/kazuho/p5-Server-Starter/issues/25 if (lc $^O eq "mswin32") { die "OS unsupported\n"; #will result in NA by cpantesters } 1; cpanfile1006642645451113260624 31713023641473 16421 0ustar00kazuhokazuho000000000000Server-Starter-0.33requires 'perl', '5.008'; on test => sub { requires 'IO::Socket::IP'; requires 'Net::EmptyPort'; requires 'Test::Requires'; requires 'Test::SharedFork'; requires 'Test::TCP', '2.08'; }; Starter.pm1006642645451113260624 4616013023641473 20761 0ustar00kazuhokazuho000000000000Server-Starter-0.33/lib/Serverpackage Server::Starter; use 5.008; use strict; use warnings; use Carp; use Fcntl; use IO::Handle; use IO::Socket::UNIX; use POSIX qw(:sys_wait_h); use Socket (); use Server::Starter::Guard; use Fcntl qw(:flock); use Exporter qw(import); our $VERSION = '0.33'; our @EXPORT_OK = qw(start_server restart_server stop_server server_ports); my @signals_received; sub start_server { my $opts = { (@_ == 1 ? @$_[0] : @_), }; $opts->{interval} = 1 if not defined $opts->{interval}; $opts->{signal_on_hup} ||= 'TERM'; $opts->{signal_on_term} ||= 'TERM'; $opts->{backlog} ||= Socket::SOMAXCONN(); for ($opts->{signal_on_hup}, $opts->{signal_on_term}) { # normalize to the one that can be passed to kill tr/a-z/A-Z/; s/^SIG//i; } # prepare args my $ports = $opts->{port}; my $paths = $opts->{path}; croak "either of ``port'' or ``path'' option is mandatory\n" unless $ports || $paths; $ports = [ $ports ] if ! ref $ports && defined $ports; $paths = [ $paths ] if ! ref $paths && defined $paths; croak "mandatory option ``exec'' is missing or is not an arrayref\n" unless $opts->{exec} && ref $opts->{exec} eq 'ARRAY'; # set envs $ENV{ENVDIR} = $opts->{envdir} if defined $opts->{envdir}; $ENV{ENABLE_AUTO_RESTART} = $opts->{enable_auto_restart} if defined $opts->{enable_auto_restart}; $ENV{KILL_OLD_DELAY} = $opts->{kill_old_delay} if defined $opts->{kill_old_delay}; $ENV{AUTO_RESTART_INTERVAL} = $opts->{auto_restart_interval} if defined $opts->{auto_restart_interval}; # open log file my $logfh; if ($opts->{log_file}) { if ($opts->{log_file} =~ /^\s*\|\s*/s) { my $cmd = $'; open $logfh, '|-', $cmd or die "failed to open pipe:$opts->{log_file}: $!"; } else { open $logfh, '>>', $opts->{log_file} or die "failed to open log file:$opts->{log_file}: $!"; } $logfh->autoflush(1); } # create guard that removes the status file my $status_file_created; my $status_file_guard = $opts->{status_file} && Server::Starter::Guard->new( sub { if ($status_file_created) { unlink $opts->{status_file}; } }, ); print STDERR "start_server (pid:$$) starting now...\n"; # start listening, setup envvar my @sock; my @sockenv; for my $hostport (@$ports) { my ($domain, $sa); my $fd; my $sockopts = sub {}; if ($hostport =~ /^\s*(\d+)(?:\s*=(\d+))?\s*$/) { # by default, only bind to IPv4 (for compatibility) $hostport = $1; $fd = $2; $domain = Socket::PF_INET; $sa = pack_sockaddr_in $1, Socket::inet_aton("0.0.0.0"); } elsif ($hostport =~ /^\s*(?:\[\s*|)([^\]]*)\s*(?:\]\s*|):\s*(\d+)(?:\s*=(\d+))?\s*$/) { my ($host, $port) = ($1, $2); $fd = $3; if ($host =~ /:/) { # IPv6 local $@; eval { $hostport = "[$host]:$port"; my $addr = Socket::inet_pton(Socket::AF_INET6(), $host) or die "failed to resolve host:$host:$!"; $sa = Socket::pack_sockaddr_in6($port, $addr); $domain = Socket::PF_INET6(); }; if ($@) { die "No support for IPv6. Please update Perl (or Perl modules)"; } $sockopts = sub { my $sock = shift; local $@; eval { setsockopt $sock, Socket::IPPROTO_IPV6(), Socket::IPV6_V6ONLY(), 1; }; }; } else { # IPv4 $domain = Socket::PF_INET; $hostport = "$host:$port"; my $addr = gethostbyname $host or die "failed to resolve host:$host:$!"; $sa = Socket::pack_sockaddr_in($port, $addr); } } else { croak "invalid ``port'' value:$hostport\n" } socket my $sock, $domain, Socket::SOCK_STREAM(), 0 or die "failed to create socket:$!"; setsockopt $sock, Socket::SOL_SOCKET, Socket::SO_REUSEADDR(), pack("l", 1); $sockopts->($sock); bind $sock, $sa or die "failed to bind to $hostport:$!"; listen $sock, $opts->{backlog} or die "listen(2) failed:$!"; fcntl($sock, F_SETFD, my $flags = '') or die "fcntl(F_SETFD, 0) failed:$!"; if (defined $fd) { POSIX::dup2($sock->fileno, $fd) or die "dup2(2) failed(${fd}): $!"; print STDERR "socket is duplicated to file descriptor ${fd}\n"; close $sock; push @sockenv, "$hostport=$fd"; } else { push @sockenv, "$hostport=" . $sock->fileno; } push @sock, $sock; } my $path_remove_guard = Server::Starter::Guard->new( sub { -S $_ and unlink $_ for @$paths; }, ); for my $path (@$paths) { if (-S $path) { warn "removing existing socket file:$path"; unlink $path or die "failed to remove existing socket file:$path:$!"; } unlink $path; my $saved_umask = umask(0); my $sock = IO::Socket::UNIX->new( Listen => $opts->{backlog}, Local => $path, ) or die "failed to listen to file $path:$!"; umask($saved_umask); fcntl($sock, F_SETFD, my $flags = '') or die "fcntl(F_SETFD, 0) failed:$!"; push @sockenv, "$path=" . $sock->fileno; push @sock, $sock; } $ENV{SERVER_STARTER_PORT} = join ";", @sockenv; $ENV{SERVER_STARTER_GENERATION} = 0; # setup signal handlers _set_sighandler($_, sub { push @signals_received, $_[0]; }) for (qw/INT TERM HUP ALRM/); $SIG{PIPE} = 'IGNORE'; # setup status monitor my ($current_worker, %old_workers, $last_restart_time); my $update_status = $opts->{status_file} ? sub { my $tmpfn = "$opts->{status_file}.$$"; open my $tmpfh, '>', $tmpfn or die "failed to create temporary file:$tmpfn:$!"; $status_file_created = 1; my %gen_pid = ( ($current_worker ? ($ENV{SERVER_STARTER_GENERATION} => $current_worker) : ()), map { $old_workers{$_} => $_ } keys %old_workers, ); print $tmpfh "$_:$gen_pid{$_}\n" for sort keys %gen_pid; close $tmpfh; rename $tmpfn, $opts->{status_file} or die "failed to rename $tmpfn to $opts->{status_file}:$!"; } : sub { }; # now that setup is complete, redirect outputs to the log file (if specified) if ($logfh) { STDOUT->flush; STDERR->flush; open STDOUT, '>&=', $logfh or die "failed to dup STDOUT to file: $!"; open STDERR, '>&=', $logfh or die "failed to dup STDERR to file: $!"; close $logfh; undef $logfh; } # daemonize if ($opts->{daemonize}) { my $pid = fork; die "fork failed:$!" unless defined $pid; if ($pid != 0) { $path_remove_guard->dismiss; exit 0; } # in child process POSIX::setsid(); $pid = fork; die "fork failed:$!" unless defined $pid; if ($pid != 0) { $path_remove_guard->dismiss; exit 0; } # do not close STDIN if `--port=n=0`. unless (grep /=0$/, @sockenv) { close STDIN; open STDIN, '<', '/dev/null' or die "reopen failed: $!"; } } # open pid file my $pid_file_guard = sub { return unless $opts->{pid_file}; open my $fh, '>', $opts->{pid_file} or die "failed to open file:$opts->{pid_file}: $!"; flock($fh, LOCK_EX) or die "flock failed($opts->{pid_file}): $!"; print $fh "$$\n"; $fh->flush(); return Server::Starter::Guard->new( sub { unlink $opts->{pid_file} or warn "failed to unlink file:$opts->{pid_file}:$!"; close $fh; }, ); }->(); # setup the start_worker function my $start_worker = sub { my $pid; while (1) { $ENV{SERVER_STARTER_GENERATION}++; $pid = fork; die "fork(2) failed:$!" unless defined $pid; if ($pid == 0) { my @args = @{$opts->{exec}}; # child process if (defined $opts->{dir}) { chdir $opts->{dir} or die "failed to chdir:$opts->{dir}:$!"; } { exec { $args[0] } @args }; print STDERR "failed to exec $args[0]$!"; exit(255); } print STDERR "starting new worker $pid\n"; sleep $opts->{interval}; if ((grep { $_ ne 'HUP' } @signals_received) || waitpid($pid, WNOHANG) <= 0) { last; } print STDERR "new worker $pid seems to have failed to start, exit status:$?\n"; } # ready, update the environment $current_worker = $pid; $last_restart_time = time; $update_status->(); }; # setup the wait function my $wait = sub { my $block = @signals_received == 0; my @r; if ($block && $ENV{ENABLE_AUTO_RESTART}) { alarm(1); @r = _wait3($block); alarm(0); } else { @r = _wait3($block); } return @r; }; # setup the cleanup function my $cleanup = sub { my $sig = shift; my $term_signal = $sig eq 'TERM' ? $opts->{signal_on_term} : 'TERM'; $old_workers{$current_worker} = $ENV{SERVER_STARTER_GENERATION}; undef $current_worker; print STDERR "received $sig, sending $term_signal to all workers:", join(',', sort keys %old_workers), "\n"; kill $term_signal, $_ for sort keys %old_workers; while (%old_workers) { if (my @r = _wait3(1)) { my ($died_worker, $status) = @r; print STDERR "worker $died_worker died, status:$status\n"; delete $old_workers{$died_worker}; $update_status->(); } } print STDERR "exiting\n"; }; # the main loop $start_worker->(); while (1) { # wait for next signal (or when auto-restart becomes necessary) my @r = $wait->(); # reload env if necessary my %loaded_env = _reload_env(); my @loaded_env_keys = keys %loaded_env; local @ENV{@loaded_env_keys} = map { $loaded_env{$_} } (@loaded_env_keys); $ENV{AUTO_RESTART_INTERVAL} ||= 360 if $ENV{ENABLE_AUTO_RESTART}; # restart if worker died if (@r) { my ($died_worker, $status) = @r; if ($died_worker == $current_worker) { print STDERR "worker $died_worker died unexpectedly with status:$status, restarting\n"; $start_worker->(); } else { print STDERR "old worker $died_worker died, status:$status\n"; delete $old_workers{$died_worker}; $update_status->(); } } # handle signals my $restart; while (@signals_received) { my $sig = shift @signals_received; if ($sig eq 'HUP') { print STDERR "received HUP, spawning a new worker\n"; $restart = 1; last; } elsif ($sig eq 'ALRM') { # skip } else { return $cleanup->($sig); } } if (! $restart && $ENV{ENABLE_AUTO_RESTART}) { my $auto_restart_interval = $ENV{AUTO_RESTART_INTERVAL}; my $elapsed_since_restart = time - $last_restart_time; if ($elapsed_since_restart >= $auto_restart_interval && ! %old_workers) { print STDERR "autorestart triggered (interval=$auto_restart_interval)\n"; $restart = 1; } elsif ($elapsed_since_restart >= $auto_restart_interval * 2) { print STDERR "autorestart triggered (forced, interval=$auto_restart_interval)\n"; $restart = 1; } } # restart if requested if ($restart) { $old_workers{$current_worker} = $ENV{SERVER_STARTER_GENERATION}; $start_worker->(); print STDERR "new worker is now running, sending $opts->{signal_on_hup} to old workers:"; if (%old_workers) { print STDERR join(',', sort keys %old_workers), "\n"; } else { print STDERR "none\n"; } my $kill_old_delay = defined $ENV{KILL_OLD_DELAY} ? $ENV{KILL_OLD_DELAY} : $ENV{ENABLE_AUTO_RESTART} ? 5 : 0; if ($kill_old_delay != 0) { print STDERR "sleeping $kill_old_delay secs before killing old workers\n"; while ($kill_old_delay > 0) { $kill_old_delay -= sleep $kill_old_delay || 1; } } print STDERR "killing old workers\n"; kill $opts->{signal_on_hup}, $_ for sort keys %old_workers; } } die "unreachable"; } sub restart_server { my $opts = { (@_ == 1 ? @$_[0] : @_), }; die "--restart option requires --pid-file and --status-file to be set as well\n" unless $opts->{pid_file} && $opts->{status_file}; # get pid my $pid = do { open my $fh, '<', $opts->{pid_file} or die "failed to open file:$opts->{pid_file}:$!"; my $line = <$fh>; chomp $line; $line; }; # function that returns a list of active generations in sorted order my $get_generations = sub { open my $fh, '<', $opts->{status_file} or die "failed to open file:$opts->{status_file}:$!"; my %gen; while (my $line = <$fh>) { if ($line =~ /^(\d+):/) { $gen{$1} = 1; } } sort { $a <=> $b } keys %gen; }; # wait for this generation my $wait_for = do { my @gens = $get_generations->() or die "no active process found in the status file"; pop(@gens) + 1; }; # send HUP kill 'HUP', $pid or die "failed to send SIGHUP to the server process:$!"; # wait for the generation while (1) { my @gens = $get_generations->(); last if scalar(@gens) == 1 && $gens[0] == $wait_for; sleep 1; } } sub stop_server { my $opts = { (@_ == 1 ? @$_[0] : @_), }; die "--stop option requires --pid-file to be set as well\n" unless $opts->{pid_file}; # get pid open my $fh, '+<', $opts->{pid_file} or die "failed to open file:$opts->{pid_file}:$!"; my $pid = do { my $line = <$fh>; chomp $line; $line; }; print STDERR "stop_server (pid:$$) stopping now (pid:$pid)...\n"; # send TERM kill 'TERM', $pid or die "failed to send SIGTERM to the server process:$!"; # wait process flock($fh, LOCK_EX) or die "flock failed($opts->{pid_file}): $!"; close $fh; } sub server_ports { die "no environment variable SERVER_STARTER_PORT. Did you start the process using server_starter?", unless $ENV{SERVER_STARTER_PORT}; my %ports = map { +(split /=/, $_, 2) } split /;/, $ENV{SERVER_STARTER_PORT}; \%ports; } sub _reload_env { my $dn = $ENV{ENVDIR}; return if !defined $dn or !-d $dn; my $d; opendir($d, $dn) or return; my %env; while (my $n = readdir($d)) { next if $n =~ /^\./; open my $fh, '<', "$dn/$n" or next; chomp(my $v = <$fh>); $env{$n} = $v if defined $v; } return %env; } our $sighandler_should_die; my $sighandler_got_sig; sub _set_sighandler { my ($sig, $proc) = @_; $SIG{$sig} = sub { $proc->(@_); $sighandler_got_sig = 1; die "got signal" if $sighandler_should_die; }; } sub _wait3 { my $block = shift; my $pid = -1; if ($block) { local $@; eval { $sighandler_got_sig = 0; local $sighandler_should_die = 1; die "exit from eval" if $sighandler_got_sig; $pid = wait(); }; if ($pid == -1 && $@) { $! = Errno::EINTR; } } else { $pid = waitpid(-1, WNOHANG); } return $pid > 0 ? ($pid, $?) : (); } 1; __END__ =head1 NAME Server::Starter - a superdaemon for hot-deploying server programs =head1 SYNOPSIS # from command line % start_server --port=80 my_httpd # in my_httpd use Server::Starter qw(server_ports); my $listen_sock = IO::Socket::INET->new( Proto => 'tcp', ); $listen_sock->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind to listening socket:$!"; while (1) { if (my $conn = $listen_sock->accept) { .... } } =head1 DESCRIPTION It is often a pain to write a server program that supports graceful restarts, with no resource leaks. L solves the problem by splitting the task into two. One is L, a script provided as a part of the module, which works as a superdaemon that binds to zero or more TCP ports or unix sockets, and repeatedly spawns the server program that actually handles the necessary tasks (for example, responding to incoming connections). The spawned server programs under L call accept(2) and handle the requests. To gracefully restart the server program, send SIGHUP to the superdaemon. The superdaemon spawns a new server program, and if (and only if) it starts up successfully, sends SIGTERM to the old server program. By using L it is much easier to write a hot-deployable server. Following are the only requirements a server program to be run under L should conform to: =over 4 =item * receive file descriptors to listen to through an environment variable =item * perform a graceful shutdown when receiving SIGTERM =back A Net::Server personality that can be run under L exists under the name L. =head1 METHODS =over 4 =item server_ports Returns zero or more file descriptors on which the server program should call accept(2) in a hashref. Each element of the hashref is: (host:port|port|path_of_unix_socket) => file_descriptor. =item start_server Starts the superdaemon. Used by the C script. =back =head1 AUTHOR Kazuho Oku =head1 SEE ALSO L =head1 LICENSE This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut Guard.pm1006642645451113260624 46713023641473 21763 0ustar00kazuhokazuho000000000000Server-Starter-0.33/lib/Server/Starterpackage Server::Starter::Guard; use strict; use warnings; sub new { my ($klass, $handler) = @_; return bless { handler => $handler, active => 1, }, $klass; } sub dismiss { shift->{active} = 0 } sub DESTROY { my $self = shift; $self->{active} && $self->{handler}->(); } 1; minil.toml1006642645451113260624 5313023641473 16677 0ustar00kazuhokazuho000000000000Server-Starter-0.33[build] build_class = "builder::MyBuilder" start_server1007752645451113260624 1115713023641473 20736 0ustar00kazuhokazuho000000000000Server-Starter-0.33/script#!perl use strict; use warnings; use Getopt::Long; use Pod::Usage; use Server::Starter qw(start_server restart_server stop_server); my %opts = ( port => [], path => [], ); GetOptions( map { $_ => do { my $name = (split '=', $_, 2)[0]; $name =~ s/-/_/g; $opts{$name} ||= undef; ref($opts{$name}) ? $opts{$name} : \$opts{$name}; }, } qw(port=s path=s interval=i log-file=s pid-file=s dir=s signal-on-hup=s signal-on-term=s backlog=i envdir=s enable-auto-restart daemonize auto-restart-interval=i kill-old-delay=i status-file=s restart stop help version), ) or exit 1; pod2usage( -exitval => 0, -verbose => 1, ) if $opts{help}; if ($opts{version}) { print "$Server::Starter::VERSION\n"; exit 0; } if ($opts{restart}) { restart_server(%opts); exit 0; } if ($opts{stop}) { stop_server(%opts); exit 0; } if ($opts{daemonize}) { die "Usage: --log-file option must be specified together with --deamonize\n" unless defined $opts{log_file}; } # validate options die "server program not specified\n" unless @ARGV; start_server( %opts, exec => \@ARGV, ); __END__ =head1 NAME start_server - a superdaemon for hot-deploying server programs =head1 SYNOPSIS start_server [options] -- server-prog server-arg1 server-arg2 ... # start Plack using Starlet listening at TCP port 8000 start_server --port=8000 -- plackup -s Starlet --max-workers=100 index.psgi =head1 DESCRIPTION This script is a frontend of L. For more information please refer to the documentation of the module. =head1 OPTIONS =head2 --port=(port|host:port|port=fd|host:port=fd) TCP port to listen to (if omitted, will not bind to any ports) If host is not specified, then the program will bind to the default address of IPv4 ("0.0.0.0"). Square brackets should be used to specify an IPv6 address (e.g. --port=[::1]:8080) If fd is specified, then start_server allocates the socket at the given number. =head2 --path=path path at where to listen using unix socket (optional) =head2 --dir=path working directory, start_server do chdir to before exec (optional) =head2 --interval=seconds minimum interval to respawn the server program (default: 1) =head2 --signal-on-hup=SIGNAL name of the signal to be sent to the server process when start_server receives a SIGHUP (default: SIGTERM). If you use this option, be sure to also use C<--signal-on-term> below. =head2 --signal-on-term=SIGNAL name of the signal to be sent to the server process when start_server receives a SIGTERM (default: SIGTERM) =head2 --pid-file=filename if set, writes the process id of the start_server process to the file =head2 --status-file=filename if set, writes the status of the server process(es) to the file =head2 --envdir=ENVDIR directory that contains environment variables to the server processes. It is intended for use with C in C. This can be overwritten by environment variable C. =head2 --log-file=file =head2 --log-file="| cmd args..." if set, redirects STDOUT and STDERR to given file or command =head2 --daemonize deamonizes the server (by doing fork,setsid,fork). Must be used together with C<--log-file>. =head2 --enable-auto-restart enables automatic restart by time. This can be overwritten by environment variable C. =head2 --auto-restart-interval=seconds automatic restart interval (default 360). It is used with C<--enable-auto-restart> option. This can be overwritten by environment variable C. =head2 --kill-old-delay=seconds time to suspend to send a signal to the old worker. The default value is 5 when C<--enable-auto-restart> is set, 0 otherwise. This can be overwritten by environment variable C. =head2 --backlog=size specifies a listen backlog parameter, whose default is SOMAXCONN (usually 128 on Linux). While SOMAXCONN is enough for most loads, large backlog is required for heavy loads. =head2 --restart this is a wrapper command that reads the pid of the start_server process from --pid-file, sends SIGHUP to the process and waits until the server(s) of the older generation(s) die by monitoring the contents of the --status-file =head2 --stop this is a wrapper command that reads the pid of the start_server process from --pid-file, sends SIGTERM to the process. =head2 --help prints this help =head2 --version prints the version number =head1 AUTHOR Kazuho Oku =head1 SEE ALSO L =head1 LICENSE This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut 00-base.t1006642645451113260624 14013023641473 16466 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use Test::More tests => 1; BEGIN { use_ok('Server::Starter'); } 01-starter-echod.pl1007752645451113260624 126013023641473 20520 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); my $sigfn = shift @ARGV; open my $sigfh, '>', $sigfn or die "could not open file:$sigfn:$!"; $SIG{TERM} = $SIG{USR1} = sub { my $signame = shift; print $sigfh $signame; sleep 2; exit 0; }; my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { my $buf; while ($conn->sysread($buf, 1048576) > 0) { $conn->syswrite("$$:$buf"); } } } 01-starter.t1006642645451113260624 505013023641473 17266 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use File::Temp (); use Test::TCP; use Test::More tests => 28; use Server::Starter qw(start_server); $SIG{PIPE} = sub {}; my $tempdir = File::Temp::tempdir(CLEANUP => 1); for my $signal_on_hup ('TERM', 'USR1') { test_tcp( server => sub { my $port = shift; start_server( port => $port, exec => [ $^X, qw(t/01-starter-echod.pl), "$tempdir/signame", ], status_file => "$tempdir/status", ($signal_on_hup ne 'TERM' ? (signal_on_hup => $signal_on_hup) : ()), ); }, client => sub { my ($port, $server_pid) = @_; my $buf; #sleep 1; my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'connect'); # check response and get pid is($sock->syswrite("hello"), 5, 'write'); ok($sock->sysread($buf, 1048576), 'read'); undef $sock; like($buf, qr/^\d+:hello$/, 'read'); $buf =~ /^(\d+):/; my $worker_pid = $1; # switch to next gen sleep 3; my $status = get_status(); like(get_status(), qr/^1:\d+\n$/s, 'status before restart'); kill 'HUP', $server_pid; sleep 2; like(get_status(), qr/^1:\d+\n2:\d+$/s, 'status during restart'); sleep 2; like(get_status(), qr/^2:\d+\n$/s, 'status after restart'); is( do { open my $fh, '<', "$tempdir/signame" or die $!; <$fh>; }, $signal_on_hup, 'signal sent on hup', ); $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'reconnect'); is($sock->syswrite("hello"), 5, 'write after switching'); ok($sock->sysread($buf, 1048576), 'read after switching'); like($buf, qr/^\d+:hello$/, 'read after swiching (format)'); isnt($buf, "$worker_pid:hello", 'pid should have changed'); }, ); ok ! -e "$tempdir/status", 'no more status file'; } sub get_status { open my $fh, '<', "$tempdir/status" or die "failed to open file:$tempdir/status:$!"; do { undef $/; <$fh> }; } 02-startfail-server.pl1007752645451113260624 105313023641473 21252 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); $SIG{TERM} = sub { exit 0; }; my $gen = $ENV{SERVER_STARTER_GENERATION}; if ($gen == 1 || 3 <= $gen && $gen < 5) { # emulate startup failure exit 1; } my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { $conn->syswrite($gen); } } 02-startfail.t1006642645451113260624 314613023641473 17600 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use Test::TCP; use Test::More tests => 9; use Server::Starter qw(start_server); test_tcp( server => sub { my $port = shift; start_server( port => $port, exec => [ $^X, qw(t/02-startfail-server.pl) ], ); }, client => sub { my ($port, $server_pid) = @_; my $buf; sleep 3; { my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'connect'); # check generation ok($sock->sysread($buf, 1048576), 'read'); is($buf, 2, 'check generation'); } # request restart, that will fail kill 'HUP', $server_pid; sleep 1; { my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'connect'); ok( $sock->sysread($buf, 1048576), 'read while worker is failing to reboot', ); is($buf, 2, 'check generation'); } # wait until server succeds in reboot sleep 5; { my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'connect'); ok( $sock->sysread($buf, 1048576), 'read after worker succeeds to reboot', ); is($buf, 5, 'check generation'); } }, ); 03-starter-unix-echod.pl1006642645451113260624 74513023641473 21467 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::UNIX; use Server::Starter qw(server_ports); my $listener = IO::Socket::UNIX->new() or die "failed to create unix socket:$!"; $listener->fdopen((values %{server_ports()})[0], 'w') or die "failde to bind to listening socket:$!"; while (1) { if (my $conn = $listener->accept) { while ($conn->sysread(my $buf, 1048576) > 0) { $conn->syswrite($buf); } } } 03-starter-unix.t1006642645451113260624 155613023641473 20260 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use File::Temp (); use IO::Socket::UNIX; use Test::More tests => 4; use Test::SharedFork; use Server::Starter qw(start_server); $SIG{PIPE} = sub {}; my $sockfile = File::Temp::tmpnam(); my $pid = fork; die "fork failed: $!" unless defined $pid; if ($pid == 0) { # child start_server( path => $sockfile, exec => [ $^X, qw(t/03-starter-unix-echod.pl) ], ); exit 0; } else { # parent sleep 1 until -e $sockfile; my $sock = IO::Socket::UNIX->new( Peer => $sockfile, ) or die "failed to connect to unix socket:$!"; is $sock->syswrite('hello', 5), 5, 'write'; is $sock->sysread(my $buf, 5), 5, 'read length'; is $buf, 'hello', 'read data'; kill 'TERM', $pid; while (wait != $pid) {} ok ! -e $sockfile, 'socket file removed after shutdown'; } unlink $sockfile; 04-starter-dir.t1006642645451113260624 217013023641473 20045 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use File::Temp (); use Test::More tests => 1; use Net::EmptyPort qw/empty_port/; use IO::Select; use Server::Starter qw(start_server); $SIG{PIPE} = sub {}; pipe my $logrh, my $logwh or die "Died: failed to create pipe:$!"; my $port = empty_port or die "could not get any port"; my $tempdir = File::Temp::tempdir(CLEANUP => 0); open(my $fh, '>', "$tempdir/dir_status") or die "$!"; close($fh); my $pid = fork; if ( ! defined $pid ) { die "Died: fork failed: $!"; } elsif ( $pid == 0 ) { close $logrh; open STDOUT, '>&', $logwh or die "Died: failed to redirect STDOUT"; close $logwh; start_server( port => $port, #not use exec => [ $^X, '-e', 'printf "%s\n", -f "dir_status" ? "OK" : "NG"; sleep(1)' ], dir => $tempdir ); exit(255); } close $logwh; my $result; my $s = IO::Select->new($logrh); my @ready = $s->can_read(10); die "could not read logs from pipe" unless @ready; sysread($logrh, my $buf, 65536); like($buf, qr/OK\W/); kill 'TERM', $pid; while (wait != $pid) {} unlink "$tempdir/status"; rmdir $tempdir; 05-killolddelay-echod.pl1007752645451113260624 126013023641473 21511 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); my $sigfn = shift @ARGV; open my $sigfh, '>', $sigfn or die "could not open file:$sigfn:$!"; $SIG{TERM} = $SIG{USR1} = sub { my $signame = shift; print $sigfh $signame; sleep 1; exit 0; }; my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { my $buf; while ($conn->sysread($buf, 1048576) > 0) { $conn->syswrite("$$:$buf"); } } } 05-killolddelay.t1006642645451113260624 545013023641473 20263 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use File::Temp (); use Test::TCP; use Test::More tests => 28; use Server::Starter qw(start_server); $SIG{PIPE} = sub {}; my $tempdir = File::Temp::tempdir(CLEANUP => 1); for my $signal_on_hup ('TERM', 'USR1') { test_tcp( server => sub { my $port = shift; start_server( port => $port, exec => [ $^X, qw(t/05-killolddelay-echod.pl), "$tempdir/signame", ], status_file => "$tempdir/status", enable_auto_restart => 0, kill_old_delay => 3, ($signal_on_hup ne 'TERM' ? (signal_on_hup => $signal_on_hup) : ()), ); }, client => sub { my ($port, $server_pid) = @_; my $buf; #sleep 1; my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'connect'); # check response and get pid is($sock->syswrite("hello"), 5, 'write'); ok($sock->sysread($buf, 1048576), 'read'); undef $sock; like($buf, qr/^\d+:hello$/, 'read'); $buf =~ /^(\d+):/; my $worker_pid = $1; # switch to next gen sleep 2; my $status = get_status(); like(get_status(), qr/^1:\d+\n$/s, 'status before restart'); kill 'HUP', $server_pid; sleep 4; like(get_status(), qr/^1:\d+\n2:\d+$/s, 'status during restart'); # Child process has finished in 2 seconds but the parent # checks and calls waitpid every second, so wait for an # additional 1 second. sleep 3; like(get_status(), qr/^2:\d+\n$/s, 'status after restart'); is( do { open my $fh, '<', "$tempdir/signame" or die $!; <$fh>; }, $signal_on_hup, 'signal sent on hup', ); $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'reconnect'); is($sock->syswrite("hello"), 5, 'write after switching'); ok($sock->sysread($buf, 1048576), 'read after switching'); like($buf, qr/^\d+:hello$/, 'read after swiching (format)'); isnt($buf, "$worker_pid:hello", 'pid should have changed'); }, ); ok ! -e "$tempdir/status", 'no more status file'; } sub get_status { open my $fh, '<', "$tempdir/status" or die "failed to open file:$tempdir/status:$!"; do { undef $/; <$fh> }; } 06-autorestart-echod.pl1007752645451113260624 124313023641473 21417 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); my $sigfn = shift @ARGV; open my $sigfh, '>', $sigfn or die "could not open file:$sigfn:$!"; $SIG{TERM} = $SIG{USR1} = sub { my $signame = shift; print $sigfh $signame; exit 0; }; my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { my $buf; while ($conn->sysread($buf, 1048576) > 0) { $conn->syswrite("$$:$buf"); } } } 06-autorestart.t1006642645451113260624 552613023641473 20174 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use File::Temp (); use Test::TCP; use Test::More tests => 28; use Server::Starter qw(start_server); $SIG{PIPE} = sub {}; my $tempdir = File::Temp::tempdir(CLEANUP => 1); for my $signal_on_hup ('TERM', 'USR1') { test_tcp( server => sub { my $port = shift; start_server( port => $port, exec => [ $^X, qw(t/05-killolddelay-echod.pl), "$tempdir/signame", ], status_file => "$tempdir/status", enable_auto_restart => 1, auto_restart_interval => 6, kill_old_delay => 2, ($signal_on_hup ne 'TERM' ? (signal_on_hup => $signal_on_hup) : ()), ); }, client => sub { my ($port, $server_pid) = @_; my $buf; #sleep 1; my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'connect'); # check response and get pid is($sock->syswrite("hello"), 5, 'write'); ok($sock->sysread($buf, 1048576), 'read'); undef $sock; like($buf, qr/^\d+:hello$/, 'read'); $buf =~ /^(\d+):/; my $worker_pid = $1; # switch to next gen sleep 2; my $status = get_status(); like(get_status(), qr/^1:\d+\n$/s, 'status before auto-restart'); sleep 7; # new worker spawn at 7 (since start, interval(1) + auto_restart_interval(6)), status updated at 8 (7 + interval(1)), old dies at 11 (8 + kill_old_delay(2) + sleep(1) in the child source code) like(get_status(), qr/^1:\d+\n2:\d+$/s, 'status during transient state'); sleep 3; like(get_status(), qr/^2:\d+\n$/s, 'status after auto-restart'); is( do { open my $fh, '<', "$tempdir/signame" or die $!; <$fh>; }, $signal_on_hup, 'signal sent on hup', ); $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'reconnect'); is($sock->syswrite("hello"), 5, 'write after switching'); ok($sock->sysread($buf, 1048576), 'read after switching'); like($buf, qr/^\d+:hello$/, 'read after swiching (format)'); isnt($buf, "$worker_pid:hello", 'pid should have changed'); }, ); ok ! -e "$tempdir/status", 'no more status file'; } sub get_status { open my $fh, '<', "$tempdir/status" or die "failed to open file:$tempdir/status:$!"; do { undef $/; <$fh> }; } 07-envdir-print.pl1007752645451113260624 105613023641473 20406 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); $SIG{TERM} = $SIG{USR1} = sub { exit 0; }; my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { my $s = ""; for my $envkey (keys %ENV) { $s .= $envkey . "=" . $ENV{$envkey} . "\n"; } $conn->syswrite($s); } } 07-envdir.t1006642645451113260624 400613023641473 17077 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use File::Temp (); use Test::TCP; use Test::More tests => 4; use Server::Starter qw(start_server); $SIG{PIPE} = sub {}; my $tempdir = File::Temp::tempdir(CLEANUP => 1); # Prepare envdir mkdir "$tempdir/env" or die $!; open my $envfh, ">", "$tempdir/env/FOO" or die $!; print $envfh "foo-value1"; close $envfh; undef $envfh; sleep 1; test_tcp( server => sub { my $port = shift; start_server( port => $port, exec => [ $^X, qw(t/07-envdir-print.pl), ], status_file => "$tempdir/status", envdir => "$tempdir/env", ); }, client => sub { my ($port, $server_pid) = @_; #sleep 1; my $fetch_env = sub { my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ) or die $!; my $buf; $sock->sysread($buf, 1048576) or die $!; undef $sock; $buf; }; my $restart = sub { sleep 1; kill "HUP", $server_pid; sleep 2; }; # Initial worker does not read envdir my $buf = $fetch_env->(); ok($buf !~ qr/^FOO=foo-value1$/m, 'changed env'); # rewrite envdir open my $envfh, ">", "$tempdir/env/FOO" or die $!; print $envfh "foo-value2"; close $envfh; undef $envfh; # switch to next gen $restart->(); # new worker reads the rewritten envdir $buf = $fetch_env->(); ok($buf =~ /^FOO=foo-value2$/m, 'changed env'); # remove the env file and check that the removal gets reflected unlink "$tempdir/env/FOO" or die $!; # switch to next gen $restart->(); # new worker reads the rewritten envdir $buf = $fetch_env->(); ok($buf !~ /^FOO=foo-value2$/m, 'removed env'); }, ); ok ! -e "$tempdir/status", 'no more status file'; 08-wait3.t1006642645451113260624 144413023641473 16643 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use Test::More; use Server::Starter; my $gotsig = 0; Server::Starter::_set_sighandler('USR1', sub { warn "got SIGUSR1"; ++$gotsig; }); my $pid = fork; die "fork failed:$!" unless defined $pid; if ($pid == 0) { # child process, send signal twice sleep 1; kill 'USR1', getppid; sleep 1; kill 'USR1', getppid; sleep 10; die "child process not killed"; } my @r = Server::Starter::_wait3(0); ok ! @r, "nonblocking wait returns without pid"; for (my $i = 1; $i <= 2; ++$i) { @r = Server::Starter::_wait3(1); is $gotsig, $i, "woke up after signal (count: $i)"; ok ! @r, "child is alive"; } kill 'KILL', $pid; @r = Server::Starter::_wait3(1); is $gotsig, 2, "did not receive signal"; is $r[0], $pid, "child died"; done_testing; 09-guard.t1006642645451113260624 75613023641473 16704 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use Test::More; use_ok("Server::Starter::Guard"); subtest "guard is called when it goes out of scope" => sub { my $cnt = 0; my $guard = Server::Starter::Guard->new(sub { $cnt++; }); is $cnt, 0; undef $guard; is $cnt, 1; }; subtest "guard can be dismissed" => sub { my $cnt = 0; my $guard = Server::Starter::Guard->new(sub { $cnt++; }); $guard->dismiss; undef $guard; is $cnt, 0; }; done_testing; 10-bindaddr-server.pl1007752645451113260624 67713023641473 21022 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); $SIG{TERM} = $SIG{USR1} = sub { exit 0; }; $SIG{HUP} = sub {}; my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { close $conn; } } 10-bindaddr.t1006642645451113260624 231613023641473 17353 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use Test::More; use Test::Requires qw(IO::Socket::IP); use Net::EmptyPort qw(can_bind empty_port); use Server::Starter qw(start_server); plan skip_all => 'IPv6 not available' unless can_bind('::1'); my $port = empty_port; sub doit { my ($bind_addr, $other_addr) = @_; my $pid = fork; die "fork failed:$!" unless defined $pid; if ($pid == 0) { # server start_server( port => "[$bind_addr]:$port", exec => [ $^X, qw(t/10-bindaddr-server.pl), ], ); exit 0; } # client sleep 1; my $sock = IO::Socket::IP->new( PeerHost => $bind_addr, PeerPort => $port, Proto => 'tcp', ); ok($sock, "connected to bindaddr"); $sock->sysread(my $buf, 1024); # wait for disconnect undef $sock; $sock = IO::Socket::IP->new( PeerHost => $other_addr, PeerPort => $port, Proto => 'tcp', ); ok ! defined $sock, "cannot connect to other addr"; kill 'TERM', $pid; wait(); } subtest "v4" => sub { doit("127.0.0.1", "::1"); }; subtest "v6" => sub { doit("::1", "127.0.0.1"); }; done_testing; 11-specified-fd-server.pl1006642645451113260624 100413023641473 21574 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); die "fd must be zero" unless ((values %{server_ports()})[0]) eq 0; my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen(0, 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { my $buf; while ($conn->sysread($buf, 1048576) > 0) { $conn->syswrite("$$:$buf"); } } } 11-specified-fd.t1006642645451113260624 157013023641473 20130 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use File::Temp (); use Test::TCP; use Test::More tests => 4; use Server::Starter qw(start_server); $SIG{PIPE} = sub {}; test_tcp( server => sub { my $port = shift; start_server( port => "$port=0", exec => [ $^X, qw(t/11-specified-fd-server.pl) ], ); exit 0; }, client => sub { my ($port, $server_pid) = @_; my $buf; #sleep 1; my $sock = IO::Socket::INET->new( PeerAddr => "127.0.0.1:$port", Proto => 'tcp', ); ok($sock, 'connect'); # check response and get pid is($sock->syswrite("hello"), 5, 'write'); ok($sock->sysread($buf, 1048576), 'read'); undef $sock; like($buf, qr/^\d+:hello$/, 'read'); kill $server_pid; }, ); 12-stop-server.pl1007752645451113260624 73513023641473 20235 0ustar00kazuhokazuho000000000000Server-Starter-0.33/t#! /usr/bin/perl use strict; use warnings; use lib qw(blib/lib lib); use IO::Socket::INET; use Server::Starter qw(server_ports); my $listener = IO::Socket::INET->new( Proto => 'tcp', ); $listener->fdopen((values %{server_ports()})[0], 'w') or die "failed to bind listening socket:$!"; while (1) { if (my $conn = $listener->accept) { my $buf; while ($conn->sysread($buf, 1048576) > 0) { $conn->syswrite("$$:$buf"); } } } 12-stop.t1006642645451113260624 206613023641473 16575 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use utf8; use Test::More; use Server::Starter qw(start_server restart_server stop_server); use File::Temp qw(tempdir); use Test::TCP; plan tests => 2; my $dir = tempdir( CLEANUP => 1 ); my $pidfile = "$dir/pid"; test_tcp( server => sub { my $port = shift; start_server( pid_file => $pidfile, daemonize => 1, port => $port, exec => [ $^X, 't/12-stop-server.pl' ], ); exit 0; }, client => sub { my $port = shift; while (!-s $pidfile) { note 'pid file is not available'; sleep 1; # wait pid file } my $pid = do { open my $fh, '<', $pidfile or die "Cannot open $pidfile: $!"; local $/; <$fh>; }; note "PID=$pid"; is(kill(0, $pid), 1, 'there is a process'); stop_server( pid_file => $pidfile, port => $port, ); ok((!-e $pidfile), 'pid file was unlinked'); }, ); 13-unix-daemonize.t1006642645451113260624 261113023641473 20541 0ustar00kazuhokazuho000000000000Server-Starter-0.33/tuse strict; use warnings; use utf8; use Test::More; use Server::Starter qw(start_server stop_server); use Server::Starter::Guard; use File::Temp qw(tempdir); plan tests => 1; my $dir = tempdir( CLEANUP => 1 ); my $pidfile = "$dir/pid"; my $sockfile = "$dir/server.sock"; fork_ok( child => sub { start_server( pid_file => $pidfile, daemonize => 1, path => $sockfile, exec => [ $^X, qw(t/03-starter-unix-echod.pl) ], ); }, parent => sub { my $guard = Server::Starter::Guard->new(sub { stop_server( pid_file => $pidfile ); }); wait_for(sub { -e $pidfile }) or BAIL_OUT("Pidfile '$pidfile' was not created in a timely fashion"); wait_for(sub { -e $sockfile }) or BAIL_OUT("Socket '$sockfile' was not created in a timely fashion"); ok(-e $sockfile, 'there is a socket'); }, ) or die "fork failed: $!"; sub fork_ok { my (%args) = @_; my $pid = fork; return unless defined $pid; if ($pid == 0) { $args{child}->(); } else { $args{parent}->($pid); } return 1; } sub wait_for { my ($code, %opts) = @_; my $times = $opts{times} || 10; my $every = $opts{every} || 1; while ( $times > 0 ) { return 1 if $code->(); $times--; sleep $every; } return 0; } META.yml1006642645451113260624 366113023641473 16213 0ustar00kazuhokazuho000000000000Server-Starter-0.33--- abstract: 'a superdaemon for hot-deploying server programs' author: - 'Kazuho Oku' build_requires: IO::Socket::IP: '0' Net::EmptyPort: '0' Test::Requires: '0' Test::SharedFork: '0' Test::TCP: '2.08' configure_requires: Module::Build: '0.4005' dynamic_config: 0 generated_by: 'Minilla/v3.0.6, CPAN::Meta::Converter version 2.150005' license: perl meta-spec: url: http://module-build.sourceforge.net/META-spec-v1.4.html version: '1.4' name: Server-Starter no_index: directory: - t - xt - inc - share - eg - examples - author - builder provides: Server::Starter: file: lib/Server/Starter.pm version: '0.33' Server::Starter::Guard: file: lib/Server/Starter/Guard.pm requires: perl: '5.008' resources: bugtracker: https://github.com/kazuho/p5-Server-Starter/issues homepage: https://github.com/kazuho/p5-Server-Starter repository: git://github.com/kazuho/p5-Server-Starter.git version: '0.33' x_contributors: - 'kazuho ' - 'yappo ' - 'Robert Buels ' - 'chromatic ' - 'Chia-liang Kao ' - 'Masahiro Nagano ' - 'Tomoya Kabe ' - 'Haruka Iwao ' - 'Kazuho Oku ' - 'Karen Etheridge ' - 'Bugdebugger ' - 'Tatsuhiko Miyagawa ' - 'Alexandr Ciornii ' - 'Tokuhiro Matsuno ' - 'Andy Jones ' - "Arthur Axel 'fREW' Schmidt " - 'Syohei YOSHIDA ' - 'Slaven Rezic ' - 'Mikhail Ivanov ' - 'Xuanzhong Wei ' - 'Kazuho Oku ' x_serialization_backend: 'CPAN::Meta::YAML version 0.018' MANIFEST1006642645451113260624 116113023641473 16064 0ustar00kazuhokazuho000000000000Server-Starter-0.33Build.PL Changes LICENSE META.json README.md builder/MyBuilder.pm cpanfile lib/Server/Starter.pm lib/Server/Starter/Guard.pm minil.toml script/start_server t/00-base.t t/01-starter-echod.pl t/01-starter.t t/02-startfail-server.pl t/02-startfail.t t/03-starter-unix-echod.pl t/03-starter-unix.t t/04-starter-dir.t t/05-killolddelay-echod.pl t/05-killolddelay.t t/06-autorestart-echod.pl t/06-autorestart.t t/07-envdir-print.pl t/07-envdir.t t/08-wait3.t t/09-guard.t t/10-bindaddr-server.pl t/10-bindaddr.t t/11-specified-fd-server.pl t/11-specified-fd.t t/12-stop-server.pl t/12-stop.t t/13-unix-daemonize.t META.yml MANIFEST