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(-)a/misc/plack/README.plack (+42 lines)
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Bug 7844 - plack intranet tooling for developers
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koha.psgi example and plackup.sh script to run any Koha site
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intranet or opac interface under plack with optional multi-process
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Starman server
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  plackup.sh site-name [intranet]
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site-name is used to find config /etc/koha/sites/site-name/koha-conf.xml
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All configuration is specified in koha.psgi, which you are welcomed to edit
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and tune according to your development needs (enable memcache, enable/disable
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debugging modules for plack and so on).
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For deployment of opac or intranet you would probably want to take a look
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in plackup.sh and enable starman as web server (which is pre-forking server
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written in perl) and put some web server in front of it to serve static web
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files (e.g. ngnix, apache)
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When you are happy with it, rename koha.psgi and plackup.sh it to site name
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and save it for safe-keeping.
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This commit message is included in patch as README.plack because it includes
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useful information for people using plack for first time.
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Test scenario:
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1. install plack and dependencies, as documented at
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   http://wiki.koha-community.org/wiki/Plack
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2. start ./plackup.sh sitename i[ntranet]
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3. open intranet page http://localhost:5001/ and verify that it redirects
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   to http://localhost:5001/cgi-bin/koha/mainpage.pl
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4. start ./plackup.sh sitename
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5. open OPAC http://localhost:5000/ and verify that it redirects to
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   http://localhost:5000/cgi-bin/koha/opac-main.pl
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6. next step is to take a look into koha.psgi and enable additional
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   debug modules, save file and reload page (plackup will reload
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   code automatically)
(-)a/misc/plack/koha.psgi (+86 lines)
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#!/usr/bin/perl
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use Plack::Builder;
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use Plack::App::CGIBin;
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use lib qw( ./lib );
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use Plack::Middleware::Debug;
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use Plack::App::Directory;
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BEGIN {
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# override configuration from startup script below:
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# (requires --reload option)
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$ENV{PLACK_DEBUG} = 1; # toggle debugging
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# memcache change requires restart
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$ENV{MEMCACHED_SERVERS} = "localhost:11211";
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#$ENV{MEMCACHED_DEBUG} = 0;
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$ENV{PROFILE_PER_PAGE} = 1; # reset persistant and profile counters after each page, like CGI
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#$ENV{INTRANET} = 1; # usually passed from script
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#$ENV{DBI_AUTOPROXY}='dbi:Gofer:transport=null;cache=DBI::Util::CacheMemory'
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} # BEGIN
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use C4::Context;
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use C4::Languages;
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use C4::Members;
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use C4::Dates;
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use C4::Boolean;
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use C4::Letters;
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use C4::Koha;
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use C4::XSLT;
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use C4::Branch;
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use C4::Category;
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=for preload
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use C4::Tags; # FIXME
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=cut
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use Devel::Size 0.77; # 0.71 doesn't work for Koha
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my $watch_capture_regex = '(C4|Koha)';
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sub watch_for_size {
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	my @watch =
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	map { s/^.*$watch_capture_regex/$1/; s/\//::/g; s/\.pm$//; $_ } # fix paths
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	grep { /$watch_capture_regex/ }
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	keys %INC
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	;
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	warn "# watch_for_size ",join(' ',@watch);
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	return @watch;
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};
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my $CGI_ROOT = $ENV{INTRANET} ? $ENV{INTRANETDIR} : $ENV{OPACDIR};
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warn "# using Koha ", $ENV{INTRANET} ? 'intranet' : 'OPAC', " CGI from $CGI_ROOT\n";
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my $app=Plack::App::CGIBin->new(root => $CGI_ROOT);
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my $home = sub {
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	return [ 302, [ Location => '/cgi-bin/koha/' . ( $ENV{INTRANET} ? 'mainpage.pl' : 'opac-main.pl' ) ] ];
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};
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builder {
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	# please don't use plugins which are under enable_if $ENV{PLACK_DEBUG} in production!
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	# they are known to leek memory
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	enable_if { $ENV{PLACK_DEBUG} } 'Debug',  panels => [
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		qw(Environment Response Timer Memory),
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		# optional plugins (uncomment to enable) are sorted according to performance implact
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#		[ 'Devel::Size', for => \&watch_for_size ], # https://github.com/dpavlin/p5-plack-devel-debug-devel-size
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#		[ 'DBIProfile', profile => 2 ],
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#		[ 'DBITrace', level => 1 ], # a LOT of fine-graded SQL trace
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#		[ 'Profiler::NYTProf', exclude => [qw(.*\.css .*\.png .*\.ico .*\.js .*\.gif)] ],
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	];
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	# don't enable this plugin in production, since stack traces reveal too much information
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	# about system to potential attackers!
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	enable_if { $ENV{PLACK_DEBUG} } 'StackTrace';
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	# this enables plackup or starman to serve static files and provide working plack
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	# setup without need for front-end web server to serve static files
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	enable_if { $ENV{INTRANETDIR} } "Plack::Middleware::Static",
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		path => qr{^/(intranet|opac)-tmpl/},
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		root => "$ENV{INTRANETDIR}/koha-tmpl/";
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	mount "/cgi-bin/koha" => $app;
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	mount "/" => $home;
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};
(-)a/misc/plack/plackup.sh (-1 / +54 lines)
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- 
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#!/bin/sh -e
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# This is plack startup script for Koha
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# ./plackup.sh [site] [intranet]
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site=$1
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test ! -z "$site" && shift || ( echo "usage: $0 [site] [i[tranet]]" ; exit 1 )
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# extract useful paths from koha-conf.xml
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export KOHA_CONF=/etc/koha/sites/$site/koha-conf.xml
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export LOGDIR="$( sudo -u $site-koha xmlstarlet sel -t -v 'yazgfs/config/logdir' $KOHA_CONF )"
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export INTRANETDIR="$( sudo -u $site-koha xmlstarlet sel -t -v 'yazgfs/config/intranetdir' $KOHA_CONF )"
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export OPACDIR="$( sudo -u $site-koha xmlstarlet sel -t -v 'yazgfs/config/opacdir' $KOHA_CONF | sed 's,/cgi-bin/opac,,' )"
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dir=`dirname $0`
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# enable memcache - it's safe even on installation which don't have it
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# since Koha has check on C4::Context
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#export MEMCACHED_SERVERS=localhost:11211
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# pass site name as namespace to perl code
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export MEMCACHED_NAMESPACE=$site
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#export MEMCACHED_DEBUG=1
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if [ ! -e "$INTRANETDIR/C4" ] ; then
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	echo "intranetdir in $KOHA_CONF doesn't point to Koha git checkout"
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	exit 1
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fi
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if [ -z "$1" ] ; then # type anything after site name for intranet!
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	INTRANET=0
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	PORT=5000
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else
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	INTRANET=1
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	PORT=5001
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	shift # pass rest of arguments to plackup
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fi
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export INTRANET # pass to plack
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# uncomment to enable logging
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#opt="$opt --access-log $LOGDIR/opac-access.log --error-log $LOGDIR/opac-error.log"
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# --max-requests 50 decreased from 1000 to keep memory usage sane
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# --workers 4       number of cores on machine
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#test "$INTRANET" != 1 && \ # don't use Starman for intranet
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opt="$opt --server Starman -M FindBin --max-requests 50 --workers 4"
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# -E deployment     turn off access log on STDOUT
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opt="$opt -E deployment"
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# comment out reload in production!
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opt="$opt --reload -R $INTRANETDIR/C4 -R $INTRANETDIR/Koha"
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sudo -E -u $site-koha plackup --port $PORT -I $INTRANETDIR -I $INTRANETDIR/installer $opt $* $dir/koha.psgi

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