Good stuff, Ezra. This is great! I look forward to seeing what the standard cap recipes look like with this.
Thanks! - Jamis On Jan 21, 2007, at 8:05 PM, Ezra Zygmuntowicz wrote: > > Hey Folks- > > I spent the weekend working on a shell script builder DSL for > writing your capistrano tasks in ruby instead of putting shell script > snippets in strings to the run method. > > I wrote about this on my blog with a call for some input on look and > feel and whatnot. > > http://brainspl.at/articles/2007/01/22/shellscriptbuilder-for- > capistrano > http://brainspl.at/shell_script_builder.tar.gz > > Right now it is just a standalone library that generates shell > scripts. I haven't made the mechanism that will allow cap to upload > these scripts to the servers and execute them but thats an easy task. > I am going to try to rewrite all the standard cap recipes to use this > Builder instead of shell scripts. > > The reasoning is that with this dsl you will not have to remember > what all the flags to bash's if statements are. And you also don';t > have to worry about shell escaping or the way capistrano escapes > commands itself. > > I would love some feedback and thoughts from folks as to whether > they would use this or not. > > Here is a small example: > > script = shell do |sh| > sh.sudo.ln_nsf "foo/bar", "bar/bar" > > sh.echo "some string" => "/path/to/log.txt" > > sh.if :directory? => "some/dir" do |sub| > sub.rm_rf 'some/dir' > sub.ln_nsf "shared/foo", "some/dir" > sub.if_not :file? => 'foo' do |ssub| > ssub.mkdir_p "some/foo" > end > end > > sh.unless :file? => 'foo/bario' do |sub| > sub.touch 'foo/bario' > end > > sh.if :writable? => "some/file.txt" do |sub| > sub.echo "#{Time.now}" => 'some/file.txt' > end > sh.mkdir_p 'foo/bar' > sh.rm_rf 'foo/bar' > end > > puts script > OUTPUT: > > #!/bin/sh > sudo ln -nsf foo/bar bar/bar > echo "some string" >> /path/to/log.txt > if [ -d some/dir ] > then > rm -rf some/dir > ln -nsf shared/foo some/dir > if [ ! -a foo ] > then > mkdir -p some/foo > fi > fi > if [ ! -a foo/bario ] > then > touch foo/bario > fi > if [ -w some/file.txt ] > then > echo "#{time}" >> some/file.txt > fi > mkdir -p foo/bar > rm -rf foo/bar > > > Cheers- > -- Ezra Zygmuntowicz > -- Lead Rails Evangelist > -- [EMAIL PROTECTED] > -- Engine Yard, Serious Rails Hosting > -- (866) 518-YARD (9273) > > > > > > > --~--~---------~--~----~------------~-------~--~----~ To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/capistrano -~----------~----~----~----~------~----~------~--~---
