Class: Concourse

Inherits:
Object
  • Object
show all
Includes:
Rake::DSL
Defined in:
lib/concourse.rb,
lib/concourse/version.rb

Constant Summary collapse

RUBIES =

these numbers/names align with public docker image names

{
  mri:     %w[2.3 2.4 2.5 2.6], # docker repository: "ruby"
  jruby:   %w[9.1 9.2],     # docker repository: "jruby"
  rbx:     %w[latest],      # docker repository: "rubinius/docker"
  windows: %w[2.3 2.4 2.5 2.6]  # windows-ruby-dev-tools-release
}
DEFAULT_DIRECTORY = 
"concourse"
VERSION = 
"0.21.0"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(project_name, args = {}) ⇒ Concourse

Returns a new instance of Concourse.



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# File 'lib/concourse.rb', line 49

def initialize project_name, args={}
  @project_name = project_name
  @directory = args[:directory] || DEFAULT_DIRECTORY
  @pipeline_filename = File.join(@directory, "#{project_name}.final.yml")
  @pipeline_erb_filename = File.join(@directory, "#{project_name}.yml")
  @private_var_file = File.join(@directory, "private.yml")
end

Instance Attribute Details

#directory ⇒ Object (readonly)

Returns the value of attribute directory.



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# File 'lib/concourse.rb', line 18

def directory
  @directory
end

#pipeline_erb_filename ⇒ Object (readonly)

Returns the value of attribute pipeline_erb_filename.



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# File 'lib/concourse.rb', line 18

def pipeline_erb_filename
  @pipeline_erb_filename
end

#pipeline_filename ⇒ Object (readonly)

Returns the value of attribute pipeline_filename.



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# File 'lib/concourse.rb', line 18

def pipeline_filename
  @pipeline_filename
end

#private_var_file ⇒ Object (readonly)

Returns the value of attribute private_var_file.



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# File 'lib/concourse.rb', line 18

def private_var_file
  @private_var_file
end

#project_name ⇒ Object (readonly)

Returns the value of attribute project_name.



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# File 'lib/concourse.rb', line 18

def project_name
  @project_name
end

Class Method Details

.default_execute_args(task) ⇒ Object 



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# File 'lib/concourse.rb', line 33

def self.default_execute_args task
  args = []
  task["config"]["inputs"].each do |input|
    args << "--input=#{input["name"]}=."
  end
  args.join(" ")
end

.production_rubies ⇒ Object 



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# File 'lib/concourse.rb', line 41

def self.production_rubies
  RUBIES[:mri].reject { |r| r =~ /rc/ }
end

.rc_rubies ⇒ Object 



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# File 'lib/concourse.rb', line 45

def self.rc_rubies
  RUBIES[:mri].select { |r| r =~ /rc/ }
end

.url_for(fly_target) ⇒ Object 



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# File 'lib/concourse.rb', line 27

def self.url_for fly_target
  matching_line = `fly targets`.split("\n").grep(/^#{fly_target}/).first
  raise "invalid fly target #{fly_target}" unless matching_line
  matching_line.split(/ +/)[1]
end

.validate_fly_target(task, task_args) ⇒ Object 



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# File 'lib/concourse.rb', line 20

def self.validate_fly_target task, task_args
  unless task_args[:fly_target]
    raise "ERROR: must specify a fly target, like `rake #{task.name}[targetname]`"
  end
  return task_args[:fly_target]
end

Instance Method Details

#create_tasks! ⇒ Object 



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# File 'lib/concourse.rb', line 70

def create_tasks!
  unless Dir.exist? directory
    mkdir_p directory
  end

  unless File.exist? pipeline_erb_filename
    warn "WARNING: concourse template #{pipeline_erb_filename.inspect} does not exist, run `rake concourse:init`"
  end

  CLOBBER.include pipeline_filename if defined?(CLOBBER)

  namespace :concourse do
    #
    #  project commands
    #
    desc "bootstrap a concourse config"
    task :init do
      rake_init
    end

    #
    #  pipeline commands
    #
    desc "generate and validate the pipeline file for #{project_name}"
    task "generate" do |t|
      File.open pipeline_filename, "w" do |f|
        f.write erbify(File.read(pipeline_erb_filename))
      end
      sh "fly validate-pipeline -c #{pipeline_filename}"
    end

    desc "upload the pipeline file for #{project_name}"
    task "set", [:fly_target] => ["generate"] do |t, args|
      fly_target = Concourse.validate_fly_target t, args
      options = [
        "-p '#{project_name}'",
        "-c '#{pipeline_filename}'",
      ]
      if File.exist? private_var_file
        puts "using #{private_var_file} to resolve template vars"
        options << "-l '#{private_var_file}'"
      end
      sh "fly -t #{fly_target} set-pipeline #{options.join(" ")}"
    end

    %w[expose hide pause unpause destroy].each do |command|
      desc "#{command} the #{project_name} pipeline"
      task "#{command}", [:fly_target] do |t, args|
        fly_target = Concourse.validate_fly_target t, args
        sh "fly -t #{fly_target} #{command}-pipeline -p #{project_name}"
      end
    end

    desc "remove generate pipeline file"
    task "clean" do |t|
      rm_f pipeline_filename
    end

    #
    #  task commands
    #
    desc "list all the available tasks from the #{project_name} pipeline"
    task "tasks" => "generate" do
      tasks = []

      each_task do |job, task|
        tasks << "#{job["name"]}/#{task["task"]}"
      end

      puts "Available Concourse tasks for #{project_name} are:"
      tasks.sort.each { |task| puts " * #{task}" }
    end

    desc "fly execute the specified task"
    task "task", [:fly_target, :job_task, :fly_execute_args] => "generate" do |t, args|
      fly_target = Concourse.validate_fly_target t, args

      job_task = args[:job_task]
      unless job_task
        raise "ERROR: must specify a task name, like `rake #{t.name}[target,taskname]`"
      end

      concourse_task = find_task job_task
      raise "ERROR: could not find task `#{job_task}`" unless concourse_task

      fly_execute_args = args[:fly_execute_args] || Concourse.default_execute_args(concourse_task)

      puts concourse_task.to_yaml
      Tempfile.create("concourse-task") do |f|
        f.write concourse_task["config"].to_yaml
        f.close
        Bundler.with_clean_env do
          sh "fly -t #{fly_target} execute #{fly_execute_args} -c #{f.path}"
        end
      end
    end

    #
    #  builds commands
    #
    desc "abort all running builds for this pipeline"
    task "abort-builds", [:fly_target] do |t, args|
      fly_target = Concourse.validate_fly_target t, args

      `fly -t #{fly_target} builds`.split("\n").each do |line|
        pipeline_job, build_id, status = *line.split(/\s+/)[1,3]
        next unless status == "started"

        sh "fly -t #{fly_target} abort-build -j #{pipeline_job} -b #{build_id}"
      end
    end
  end
end

#each_job ⇒ Object 



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# File 'lib/concourse.rb', line 184

def each_job
  pipeline = YAML.load_file(pipeline_filename)

  pipeline["jobs"].each do |job|
    yield job
  end
end

#each_task ⇒ Object 



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# File 'lib/concourse.rb', line 192

def each_task
  each_job do |job|
    job["plan"].each do |task|
      yield job, task if task["task"]
    end
  end
end

#erbify(document_string, *args) ⇒ Object 



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# File 'lib/concourse.rb', line 57

def erbify document_string, *args
  ERB.new(document_string, nil, "%-").result(binding)
end

#find_task(job_task) ⇒ Object 



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# File 'lib/concourse.rb', line 200

def find_task job_task
  job_name, task_name = *job_task.split("/")
  each_task do |job, task|
    return task if task["task"] == task_name && job["name"] == job_name
  end
  nil
end

#rake_init ⇒ Object 



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# File 'lib/concourse.rb', line 61

def rake_init
  FileUtils.mkdir_p File.join(directory, "tasks")
  FileUtils.touch pipeline_erb_filename
  File.open ".gitignore", "a" do |f|
    f.puts private_var_file
    f.puts pipeline_filename
  end
end