crate packaging standalone ruby applications
TRANSCRIPT
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COPIOUS FREE TIME
Fedora Packaging
•beanstalkd•haproxy•libtomcrypt•libtommath•nginx•ragel•tinyproxy
Ruby Gems
•amalgalite•crate•keybox•launchy•heel•hitimes•htauth•rabal•stickler
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Crate&
Amalgalite
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SURVEY
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PRE HISTORYRubyConf 2007 (Charlotte, NC)
• Sploitin’ with Ruby
• Aaron Bedra
• Deploying Ruby Runtimes
• Bruce Williams & Rich Kilmer
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STORYTIME
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PERL 4, 1993
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NO CONTROL
• interpreters? - perl probably, python maybe, ruby most likely not
• what libraries? - openssl? zlib?
• compiler? - quite possibly not
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What do you do, when only thing you know about your
deployment location, is the Operating System?
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AND YOU LOVE RUBY.
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YOU MAKE CRATE.
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SO WHAT IS CRATE?
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embedded Ruby
+ standard library+ main wrapper
+ application codeCrate based application
+ ruby extensions
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RUBYSCRIPT2EXE ?
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http://www.erikveen.dds.nl/rubyscript2exe
eee.exe trailereee.gz
application.exe
exe rubylib
dlls
Ruby
sitelib
Extension
gems
Application
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MY NEEDS
• Minimally Invasive
• do not unpack to a temporary location
• small as can be
• Wide deployment capabilities
• more than linux, mac, windows, cygwin
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CRuby
Statically Compile
Pack into Amalgalite
embedded Ruby
+ standard library+ main wrapper
+ application codeCrate based application
+ ruby extensions
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1 CREATE TABLE rubylibs (2 id INTEGER PRIMARY KEY AUTOINCREMENT,3 filename TEXT UNIQUE,4 compressed BOOLEAN,5 contents BLOB6 );
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Executable + C extensions
Ruby libs
Ruby 1.8.6
Crate/ruby 1.8.6
2.4 M 8.4 M
2.9 M 1.9 M
Inexact Size Measurements
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1 module Kernel 2 # alias the original require away to use later 3 alias :amalgalite_original_require :require 4 5 # 6 # hook into the system 'require' to allow for required text or blobs from an 7 # amalgalite database. 8 # 9 def require( filename )10 loaded = amalgalite_original_require( filename )11 rescue LoadError => load_error12 if load_error.message =~ /#{Regexp.escape filename}\z/ then13 loaded = Amalgalite::Requires.require( filename )14 else15 raise load_error16 end17 end18 19 private :require20 private :amalgalite_original_require21 end
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Amalgalite ruby driver is bootstrapped in its C extension
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DEMO
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BOOTSTRAPPING
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ISSUE #1 - AUTOLOAD
• Problem
• bypasses the require chain setup by amalgalite
• used by rack, active_support, active_record
• Solution
• Port tree style patches?
• custom gem builds?
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ISSUE #2 - VIEWS IN WEB FRAMEWORKS
• Problem
• layout and templates loaded from disk
• Solution
• wait for Rails 3
• sinatra, others, make patches for upstream, if needed.
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ISSUE #3 - CLASS RELOADING
• Problem
• Development mode reloads classes
• Solution ( for now )
• production mode when running as crate based apps
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ISSUE #4 - NOT WINDOWS FRIENDLY ( YET )
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QUESTIONS?