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[2.1 2.2 2.3 2.4], # docker repository: "ruby"
  jruby: %w[1.7 9.1],         # docker repository: "jruby"
  rbx:   %w[latest],          # docker repository: "rubinius/docker"
}
DIRECTORY = 
"concourse"
PRIVATE_VAR_FILE = 
File.join DIRECTORY, "private.yml"
VERSION = 
"0.9.0"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(project_name) ⇒ Concourse

Returns a new instance of Concourse.



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# File 'lib/concourse.rb', line 31

def initialize project_name
  @project_name = project_name
  @pipeline_filename = File.join(DIRECTORY, "#{project_name}.yml")
  @pipeline_erb_filename = "#{pipeline_filename}.erb"
end

Instance Attribute Details

#pipeline_erb_filename ⇒ Object (readonly)

Returns the value of attribute pipeline_erb_filename.



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# File 'lib/concourse.rb', line 16

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 16

def pipeline_filename
  @pipeline_filename
end

#project_name ⇒ Object (readonly)

Returns the value of attribute project_name.



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# File 'lib/concourse.rb', line 16

def project_name
  @project_name
end

Class Method Details

.url_for(fly_target) ⇒ Object 



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# File 'lib/concourse.rb', line 25

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 18

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

#badge_url_for(url_prefix, team_name, job_name) ⇒ Object 



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# File 'lib/concourse.rb', line 182

def badge_url_for url_prefix, team_name, job_name
  File.join url_prefix,
            "api/v1/teams",
            team_name,
            "pipelines",
            project_name,
            "jobs",
            job_name,
            "badge"
end

#create_tasks! ⇒ Object 



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

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

  unless File.exist? pipeline_erb_filename
    raise "ERROR: concourse pipeline template #{pipeline_erb_filename.inspect} does not exist"
  end

  CLOBBER.include pipeline_filename if defined?(CLOBBER)

  namespace :concourse do
    #
    #  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].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]
      fly_execute_args = args[:fly_execute_args] || "--input=#{project_name}=."

      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

      puts concourse_task.to_yaml
      Tempfile.create 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} -x"
        end
      end
    end

    #
    #  badge commands
    #
    desc "display a list of jobs and badge urls"
    task "badges", [:fly_target, :team_name] => "generate" do |t, args|
      fly_target = Concourse.validate_fly_target t, args
      team_name = args[:team_name] || "main"

      puts ""
      puts "| Build | Status |"
      puts "|--|--|"

      each_job do |job|
        job_name = job["name"]
        puts "| #{titleize job_name} | #{markdown_badge fly_target, team_name, job_name} |"
      end
    end
  end
end

#each_job ⇒ Object 



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# File 'lib/concourse.rb', line 149

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 157

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 37

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 165

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

#job_url_for(url_prefix, team_name, job_name) ⇒ Object 



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# File 'lib/concourse.rb', line 193

def job_url_for url_prefix, team_name, job_name
  File.join url_prefix,
            "teams",
            team_name,
            "pipelines",
            project_name,
            "jobs",
            job_name
end

#markdown_badge(fly_target, team_name, job_name) ⇒ Object 



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# File 'lib/concourse.rb', line 177

def markdown_badge fly_target, team_name, job_name
  url_prefix = Concourse.url_for fly_target
  "[![name](#{badge_url_for(url_prefix, team_name, job_name)})](#{job_url_for(url_prefix, team_name, job_name)})"
end

#titleize(string) ⇒ Object 



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# File 'lib/concourse.rb', line 173

def titleize string
  string.gsub(/[^a-zA-Z0-9\.]/, " ")
end