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@gilles
Created November 23, 2010 22:14
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install eggs with chef
require 'chef/mixin/command'
class Chef
class Recipe
include Chef::Mixin::Command
def install_egg(name, options={})
version = options.delete(:version)
module_name = options.delete(:module) || name
file_name = options.delete(:file) || name
if not is_installed?(file_name)
Chef::Log.debug("Egg Not installed: #{name}")
install(name, version)
else
if version
#check version, crappy strict equality
current_version = get_version(module_name)
Chef::Log.debug("#{version} -> #{current_version}")
if current_version != version.to_s
Chef::Log.debug("Egg update: #{name} #{current_version} -> #{version}")
install(name, version)
end
end
end
end
private
def install(name, version)
name = "#{name}==#{version}" if version
Chef::Log.info("Installing #{name} at version #{version}")
bash "install_egg_#{name}" do
code <<-EOF
easy_install-2.6 #{name}
EOF
end
end
def is_installed?(name)
command = "python26 -c \"import sys; print sys.path\""
check = false
popen4(command) do |pid, stdin, stdout, stderr|
stdout.each do |line|
if line.include? "#{name}"
check = true
end
end
end
check
end
def get_version(module_name)
package_version = nil
command = "python26 -c \"import #{module_name}; print #{module_name}.__file__\""
status = popen4(command) do |pid, stdin, stdout, stderr|
install_location = stdout.readline
install_location[/\S\S(.*)\/(.*)-(.*)-py(.*).egg\S/]
package_version = $3
end
package_version
end
end
end
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