Question

codebase4 gem过时了（仅限Capistrano 2），我想知道如何使用Capistrano 3，因为它取消了配方并改为使用任务。

Answer 1

这项任务非常适合与gem结合使用：

namespace :codebase do
  desc "Logs the deployment of your Codebase 4 repository"
  task :log_deployment do

    previous_revision = fetch :previous_revision
    current_revision = fetch :current_revision

    if previous_revision == current_revision
      puts "\e[31m    The old revision & new revision are the same - you didn't deploy anything new. Skipping logging.\e[0m"
      next
    end

    cmd = ["cb deploy #{previous_revision or "0000000000000000000000000000000000000000"} #{current_revision}"]

    if respond_to?(:environment)
      set :environment, environment
    elsif respond_to?(:rails_env)
      set :environment, rails_env
    end

    branch = fetch :branch
    roles = fetch :roles
    stage = fetch :stage
    app = fetch :application

    cmd << "-s #{app}"
    cmd << "-b #{branch}"
    cmd << "-e #{stage}"

    ## get the repo and project name etc...
    account, project, repo = nil, nil, nil
    case fetch(:repo_url)
    when /git\@codebasehq.com\:(.+)\/(.+)\/(.+)\.git\z/
      account, project, repo = $1, $2, $3
    when /ssh:\/\/.+\@codebasehq.com\/(.+)\/(.+)\/(.+)\.hg\z/
      account, project, repo = $1, $2, $3
    when /https?:\/\/.+\@(.+)\.codebasehq.com\/(.+)\/(.+)\.(?:hg|svn)\z/
      account, project, repo = $1, $2, $3
    when /https?:\/\/(?:.+\@)?(.+)\.svn\.codebasehq.com\/(.+?)\/(.+?)(?:\/.*)\z/
      account, project, repo = $1, $2, $3
    else
      puts "! Repository path not supported by deployment logging"
      next
    end

    cmd << "-r #{project}:#{repo}"
    cmd << "-h #{account}.codebasehq.com"
    cmd << "--protocol https"

    run_locally do
      execute cmd.join(' ') + "; true"
    end

  end
end

示例部署：

namespace :deploy do
    after 'deploy:symlink:release', 'codebase:log_deployment'
end

如果您正在运行已删除先前修订版的Capistrano版本。

将此添加到您部署文件或添加为另一个自定义任务文件：

on roles(:app) do
  within current_path do
    revision = capture "cat #{current_path}/REVISION"
    set :previous_revision, revision
  end
end

然后正常修改版本。

previous_revision = fetch :previous_revision
current_revision = fetch :current_revision

我的Ruby目前有点生疏，所以如果可以巩固/改进，请告诉我，谢谢。

Answer 2

codebase4 gem已更新为包含Capistrano 3版本的脚本。

以下为我工作（在Rails 4项目上测试）。

在Capfile中，添加以下内容：

require 'capistrano/git'
require 'codebase/capistrano3'

# Loads custom tasks from `lib/capistrano/tasks' if you have any defined.
Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }
Dir.glob('lib/capistrano/tasks/*.cap').each { |r| import r }
Dir.glob('lib/capistrano/**/*.rb').each { |r| import r }

在部署脚本中的某处添加以下任务。我把它放在一个名为lib/capistrano/tasks/git.cap的单独文件中。

namespace :git do
  desc 'Determine the previous revision that was deployed'
  task :set_previous_revision do
    on release_roles :all do
      within repo_path do
        with fetch(:git_environmental_variables) do
          set :previous_revision, strategy.fetch_revision
        end
      end
    end
  end

  before 'git:update', 'git:set_previous_revision'
end

就是这样。

我一直试图在Rails 3项目上进行这项工作很长一段时间，但出于某种原因，到current_revision和previous_revision变量为fetch时（在部署过程结束时，执行部署跟踪代码时，变量不存在;他们返回空白字符串。

相同的代码在Rails 4项目上完美运行。我不确定在部署跟踪代码运行之前是否发生了清除这两个变量的事情。

使用Capistrano 3部署时更新codebasehq.com

2 个答案: