[Opensrf-commits] r1382 - trunk/bin

[svn at svn.open-ils.org]

Author: erickson
Date: 2008-07-31 09:36:00 -0400 (Thu, 31 Jul 2008)
New Revision: 1382

Added:
   trunk/bin/opensrf-perl.pl
Log:

This script provides per-service control of OpenSRF Perl processes.  In other words, you can
stop/start/restart individual services.  Note that you can only stop services that have
been started with this script.

TODO
Add start_all, stop_all, and restart_all to manage all host-specific Perl services



Added: trunk/bin/opensrf-perl.pl
===================================================================
--- trunk/bin/opensrf-perl.pl	                        (rev 0)
+++ trunk/bin/opensrf-perl.pl	2008-07-31 13:36:00 UTC (rev 1382)
@@ -0,0 +1,173 @@
+#!/usr/bin/perl
+# ---------------------------------------------------------------
+# Copyright (C) 2008  Georgia Public Library Service
+# Bill Erickson <erickson at esilibrary.com>
+#
+# 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 2
+# of the License, 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.
+# ---------------------------------------------------------------
+use strict; use warnings;
+use Getopt::Long;
+use Net::Domain qw/hostfqdn/;
+use POSIX qw/setsid :sys_wait_h/;
+use OpenSRF::Utils::Logger q/$logger/;
+use OpenSRF::System;
+use OpenSRF::Transport::PeerHandle;
+use OpenSRF::Utils::SettingsClient;
+use OpenSRF::Transport::Listener;
+use OpenSRF::Utils;
+use OpenSRF::Utils::Config;
+
+my $action = undef;
+my $service = undef;
+my $config = undef;
+my $pid_dir = '/tmp';
+my $no_daemon = 0;
+my $help = 0;
+my $sclient;
+my $hostname = hostfqdn();
+
+GetOptions(
+    'action=s' => \$action,
+    'service=s' => \$service,
+    'config=s' => \$config,
+    'pid_dir=s' => \$pid_dir,
+    'no_daemon' => \$no_daemon,
+    'help' => \$help,
+);
+
+my $pid_file = "$pid_dir/$service.pid" if $pid_dir and $service;
+
+# stop a specific service
+sub do_stop {
+    if(-e $pid_file) {
+        my $pid = `cat $pid_file`;
+        msg("Stopping $service parent process $pid");
+        kill('INT', $pid);
+        unlink $pid_file;
+    } else {
+        msg("$service not running");
+    }
+}
+
+# start a specific service
+sub do_start {
+
+    OpenSRF::System->bootstrap_client(config_file => $config);
+
+    die "Unable to bootstrap client for requests\n"
+        unless OpenSRF::Transport::PeerHandle->retrieve;
+
+    load_settings() if $service eq 'opensrf.settings';
+
+    my $sclient = OpenSRF::Utils::SettingsClient->new;
+    my $apps = $sclient->config_value("activeapps", "appname");
+    OpenSRF::Transport::PeerHandle->retrieve->disconnect;
+
+    if($apps) {
+        $apps = [$apps] unless ref $apps;
+        for my $app (@$apps) {
+            if($app eq $service) {
+                if($sclient->config_value('apps', $app, 'language') =~ /perl/i) {
+                    do_daemon() unless $no_daemon;
+                    launch_net_server();
+                    launch_listener();
+                    while(my $pid = waitpid(-1, 0)) {
+                        $logger->debug("Cleaning up Perl $service process $pid");
+                    }
+                }
+            }
+        }
+    }
+
+    msg("$service is not configured to run on $hostname");
+}
+
+# daemonize us
+sub do_daemon {
+    exit if OpenSRF::Utils::safe_fork();
+    chdir('/');
+    setsid();
+    close STDIN;
+    close STDOUT;
+    close STDERR;
+    `echo $$ > $pid_file`;
+}
+
+# parses the local settings file
+sub load_settings {
+    my $conf = OpenSRF::Utils::Config->current;
+    my $cfile = $conf->bootstrap->settings_config;
+    my $parser = OpenSRF::Utils::SettingsParser->new();
+    $parser->initialize( $cfile );
+    $OpenSRF::Utils::SettingsClient::host_config =
+        $parser->get_server_config($conf->env->hostname);
+}
+
+# starts up the unix::server master process
+sub launch_net_server {
+    push @OpenSRF::UnixServer::ISA, 'Net::Server::PreFork';
+    unless(OpenSRF::Utils::safe_fork()) {
+        $0 = "OpenSRF App ($service)";
+        OpenSRF::UnixServer->new($service)->serve;
+        exit;
+    }
+    return 1;
+}
+
+# starts up the inbound listener process
+sub launch_listener {
+    unless(OpenSRF::Utils::safe_fork()) {
+        $0 = "OpenSRF listener [$service]";
+        OpenSRF::Transport::Listener->new($service)->initialize->listen;
+        exit;
+    }
+    return 1;
+}
+
+sub msg {
+    my $m = shift;
+    print "* $m\n";
+}
+
+sub do_help {
+    # XXX add more comments
+    print <<HELP;
+
+    Usage: perl $0 --pid_dir /var/run/opensrf --config /etc/opensrf/opensrf_core.xml --service opensrf.settings --action start
+
+    --action <action>
+        Actions include start, stop, restart, and start_all, stop_all, and restart_all
+
+    --service <service>
+        Specifies which OpenSRF service to control
+
+    --config <file>
+        OpenSRF configuration file 
+        
+    --pid_dir <dir>
+        Directory where process-specific PID files are kept
+        
+    --no_daemon
+        Do not detach and run as a daemon process.  Useful for debugging.
+        
+    --help
+        Print this help message
+HELP
+exit;
+}
+
+
+do_help() if $help or not $action;
+do_start() if $action eq 'start';
+do_stop() if $action eq 'stop';
+do_stop() and do_start() if $action eq 'restart';
+
+


Property changes on: trunk/bin/opensrf-perl.pl
___________________________________________________________________
Name: svn:executable
   + *