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Created January 8, 2016 10:58
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Catalyst with Perlbrew Setup
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gistfile1.md

Overview

Perlbrew is a way of managing perl versions and application specific libraries.

In general it doesn't require root, unless you want it installed in a location only writable by root. ;)

Its actually not such a great idea to have this in a home directory if you want it shared by multiple users, such as nginx/apache, so it may be a better idea to have your $PERLBREW_ROOT as /opt/perlbrew or something similar

CPAN documentation

Perlbrew install script

PERLV="perl-5.16.3"

#The default for this is $HOME
# export PERLBREW_ROOT=/opt/perlbrew

export PERLBREW_HOME=${HOME}/.perlbrew
export PERLBREW_ROOT=${HOME}/perl5/perlbrew

source $HOME/.bashrc
if [ ! -d $PERLBREW_ROOT ]; then
    #mkdir -p $PERLBREW_ROOT
    #cd $PERLBREW_ROOT
    curl -kL http://install.perlbrew.pl | bash

#If you want this in your home envir
    echo 'source ${PERLBREW_ROOT}/etc/bashrc' >> $HOME/.bashrc
    source ${PERLBREW_ROOT}/etc/bashrc
    source ~/.bashrc
    #perlbrew mirror
    #Perlbrew available will show the different versions available
    #perlbrew available
    perlbrew install --notest --thread --multi --debug $PERLV
    perlbrew switch $PERLV
    perlbrew install-cpanm
    cpanm App::cpanoutdated
else
#Uncomment this if you want updates of all perl modules
    cpanm App::cpanoutdated
    cpan-outdated | cpanm
    perlbrew switch $PERLV
fi

perlbrew switch $PERLV
#If you want application specific libraries...
#From the commandline you can do 
#perlbrew lib create perl-5.16.3@myapp
#perlbrew switch perl-5.16.3@myapp

export PERLL=myapp
export PERL5LIB=${PERLBREW_HOME}/libs/$PERLV@$PERLL/lib/perl5
export LD_LIBRARY_PATH=$PERL5LIB:$LD_LIBRARY_PATH

#This does not work directly
#export PERLBREW_LIB=myapp

#When in doubt on where things are installing do a 
# env |grep -i perl
# Your variables should look something like this
# PERLBREW_LIB=myapp
# PERLBREW_ROOT=/opt/perlbrew
# PERLBREW_HOME=${PERLBREW_ROOT}/.perlbrew
# MANPATH=${PERLBREW_ROOT}/perls/perl-5.16.3/man:/usr/local/share/man:/usr/share/man/en:/usr/share/man:/usr/local/man
# PERLBREW_VERSION=0.66
# PERLBREW_PERL=perl-5.16.3
# PERLBREW_LIB=myapp
# PERL5LIB=${PERLBREW_ROOT}/.perlbrew/libs/perl-5.16.3@myapp/lib/perl5
# PERL_MB_OPT=--install_base ${PERLBREW_ROOT}/.perlbrew/libs/perl-5.16.3@myapp
# PERL_MM_OPT=INSTALL_BASE=${PERLBREW_ROOT}/.perlbrew/libs/perl-5.16.3@myapp
# PATH=${PERLBREW_ROOT}/bin:${PERLBREW_ROOT}/perls/perl-5.16.3/bin:$PATH
# PERL_LOCAL_LIB_ROOT=${PERLBREW_ROOT}/.perlbrew/libs/perl-5.16.3@myapp

cpanm --notest Module::Install
#requires use of Test::TCP which needs to bind to a random port on localhost - not allowed with openshift
cpanm --notest Catalyst::Devel
cpanm --notest Catalyst::ScriptRunner
cpanm --notest Term::ReadKey Log::Log4perl::Catalyst Catalyst::Restarter Catalyst::View::TT
cpanm --notest HTML::FormHandler
cpanm --notest HTML::FormHandler::Model::DBIC
cpanm --notest File::Find::Rule
cpanm --notest MongoDB
cpanm --notest Carp::Always Devel::SimpleTrace
cpanm --notest File::Find::Rule

#Only need this for fastcgi
cpanm --notest Moose
cpanm --notest FCGI FCGI::ProcManager

cpanm --notest CatalystX::RoleApplicator
cpanm --notest Catalyst::TraitFor::Request::ProxyBase
cpanm --notest Catalyst::Plugin::Session::State::Cookie
cpanm --notest Catalyst::Plugin::Session::Store::File
cpanm --notest Catalyst::Authentication::Store::LDAP
cpanm --notest Catalyst::Plugin::StackTrace
cpanm --notest Catalyst::Plugin::Params::Nested
cpanm --notest Catalyst::Helper::Model::DBIC::Schema
cpanm --notest DBIx::Class::Schema::Loader
cpanm --notest MooseX::MarkAsMethods
cpanm --notest MooseX::NonMoose

cpanm --notest YAML
cpanm --notest Path::Class
cpanm --notest DBD::mysql
cpanm --notest Catalyst::Plugin::Redirect
cpanm --notest List::Uniq

Now at any time you can run

perlbrew switch perl-5.16.3 #or perl-5.16.3@myapp
And this will set your paths fine

Run from a bash script

Or if you would like to source everything from a bash script

#!/bin/bash

## /var/www/MyApp/script/myapp_server.sh

export PERLBREW_HOME=${HOME}/.perlbrew
export PERLBREW_ROOT=${HOME}/perl5/perlbrew
#export PERLBREW_HOME=/data/apps/software/perl/.perlbrew
#export PERLBREW_ROOT=/data/apps/software/perl
source ${PERLBREW_ROOT}/etc/bashrc
PERLV="perl-5.16.3"
V="5.16.3"
PERLL="myapp"

export PERL5LIB=$PERLBREW_HOME/libs/$PERLV@$PERLL/lib/perl5
export LD_LIBRARY_PATH=$PERL5LIB:$LD_LIBRARY_PATH

#Any perl scripts must have the line #!/usr/bin/env perl
/var/www/MyApp/script/myapp_server.pl -r -p 8080

Setup as a service

On centos this goes into /etc/init.d/web_myapp

We are using this setup with nginx for production.

#!/bin/bash

# web_myapp Startup script for MyApp Web Server
#
# description: The MyApp Web Server
# processname: myapp_server.sh

PROG=myapp
SCRIPT="/var/www/MyApp/script/myapp_server.pl"
PORT_NUM=5000
PIDFILE=/var/run/${PROG}.pid
USER=apache

MyApp_prod=1
export MyApp_prod

PERLV="perl-5.16.3"
V="5.16.3"
PERLL="myapp"

export PERLBREW_HOME=/home/jillian/.perlbrew
export PERLBREW_ROOT=/home/jillian/perl5/perlbrew

#Does not work within a service
#source ${PERLBREW_ROOT}/etc/bashrc

export PERLBREW_PERL=$PERLV
export PATH=${PERLBREW_ROOT}/bin:${PERLBREW_ROOT}/perls/$PERLV/bin:$PATH
export PERLBREW_PATH=${PERLBREW_ROOT}/bin:${PERLBREW_ROOT}/perls/$PERLV/bin

export PERL5LIB=${PERLBREW_HOME}/libs/$PERLV@$PERLL/lib/perl5
export LD_LIBRARY_PATH=$PERL5LIB:$LD_LIBRARY_PATH

PID=`lsof -i:${PORT_NUM} | grep LISTEN | awk '{print $2}'`

#This one checks if its already running
start () {
    #echo PROG is on $PID
    if [ -z "$PID" ] ;  then
        runweb
    else
        echo "$PROG already running on $PID"
    fi  
}

#This is if we want to just start it anyways
runweb () {
    echo "Starting $PROG Web Services"
    nohup $SCRIPT -r -p $PORT_NUM > /tmp/${PROG}_server.log 2>&1 &
    # Wait for services to startup
    sleep 3
}
stop () {
    if [ ! -z "$PID" ] ;  then
        echo "Stopping $PROG Web Service"
        ps -ef | grep "$SCRIPT" | grep -v grep | awk '{print $2}' | xargs kill
        sleep 3
    else
        echo $PROG not running
    fi  
}

status () {
    if [ ! -z "$PID" ] ;  then
        echo "$PROG running on PORT $PORT_NUM pid=$PID"
    else
        echo $PROG not running
    fi  
}

case "$1" in
    restart)
        echo "Restarting $PROG Service"
        stop
        runweb
        ;;
    start)
        start
        ;;
    stop)
        stop
        ;;
    status)
        status
        ;;
    *)
        echo "Usage: `basename $0` {start|stop|restart|status}"
        exit 1
esac

exit 0

# end

Manage your sessions with Tmux and Tmuxifier

Just add the bits above with exporting the correct variables to the last script shown.

Catalyst and Tmux

This is what I use in my development environment.

Acknowledgements

This module was originally developed at and for Weill Cornell Medical College in Qatar within ITS Advanced Computing Team. With approval from WCMC-Q, this information was generalized and put on github, for which the authors would like to express their gratitude.

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