Deploying Java Applications with Capistrano

Posted by Ben Poweski Fri, 22 Feb 2008 18:01:00 GMT

Capistrano 2, the fantastic sequel to the already superb Rails deployment framework, is an excellent solution to the otherwise mundane task of deploying Java applications.

Network security restrictions prohibit me from using the typically SCM -> Production server configuration. Next, I ran into a few problems uploading Jar files using the put command. Luckily Alex Gorbatchev, posted an example of how to use SFTP within a Capistrano deployment recipe.

I used his idea and adapted my rails recipe using SFTP deployment.

namespace :deploy do                
  task :update_code do
    on_rollback { run "rm -rf #{release_path}" }
    run "mkdir #{release_path}" 
    files = Dir.glob('lib/*.jar') + Dir.glob('dist/*.jar')
    execute_on_servers(options) do |servers|
      servers.each do |server|
        files.each do |path|
          logger.info "uploading #{File.basename(path)} to #{server}"  
          sftp = sessions[server].sftp  
          sftp.connect unless sftp.state == :open  
          sftp.put_file path, File.join(current_path, File.basename(path))  
          logger.debug "done uploading #{File.basename(path)} to #{server}"  
        end
      end
    end    
    finalize_update
  end
end

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