Class: Berkflow::Cli

Inherits:
Thor
  • Object
show all
Defined in:
lib/berkflow/cli.rb

Constant Summary collapse

LATEST = 
"latest".freeze

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/berkflow/cli.rb', line 9

def initialize(*args)
  super(*args)

  if @options[:verbose]
    Ridley.logger.level = ::Logger::INFO
  end

  if @options[:debug]
    Ridley.logger.level = ::Logger::DEBUG
  end
end

Instance Method Details

#exec(environment, command) ⇒ Object 



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# File 'lib/berkflow/cli.rb', line 140

def exec(environment, command)
  env = find_environment!(environment)

  say "Discovering nodes in #{environment}..."
  nodes = find_nodes(environment)

  if nodes.empty?
    say "No nodes in #{environment}. Done."
    exit(0)
  end

  say "Executing command on #{nodes.length} nodes..."
  success, failures, out = handle_results nodes.map { |node| ridley.node.run(node.public_hostname, command) }

  unless success.empty?
    say "Successfully executed command on #{success.length} nodes"
  end

  unless failures.empty?
    error "Failed to execute command on #{failures.length} nodes"
  end

  say "Done. See #{out} for logs."
  failures.empty? ? exit(0) : exit(1)
end

#install(url) ⇒ Object 



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# File 'lib/berkflow/cli.rb', line 61

def install(url)
  require 'uri'
  require 'open-uri'
  require 'zlib'
  require 'rubygems/package'

  if is_url?(url)
    tempfile = Tempfile.new("berkflow")
    begin
      open(url) { |remote_file| tempfile.write(remote_file.read) }
    rescue OpenURI::HTTPError => ex
      error "Error retrieving remote package: #{ex.message}."
      exit(1)
    end
    url = tempfile.path
  end

  unless File.exist?(url)
    error "Package not found: #{url}."
    exit(1)
  end

  tmpdir = Dir.mktmpdir("berkflow")

  begin
    zlib   = Zlib::GzipReader.new(File.open(url, "rb"))
    io     = StringIO.new(zlib.read)
    zlib.close

    Gem::Package::TarReader.new io do |tar|
      tar.each do |tarfile|
        destination_file = File.join(tmpdir, tarfile.full_name)

        if tarfile.directory?
          FileUtils.mkdir_p(destination_file)
        else
          destination_directory = File.dirname(destination_file)
          FileUtils.mkdir_p(destination_directory) unless File.directory?(destination_directory)
          File.open(destination_file, "wb") { |f| f.print tarfile.read }
        end
      end
    end
  rescue Zlib::GzipFile::Error => ex
    error "Error extracting package: #{ex.message}"
    exit(1)
  end

  cookbooks_dir = File.join(tmpdir, "cookbooks")

  unless File.exist?(cookbooks_dir)
    error "Package did not contain a 'cookbooks' directory."
    exit(1)
  end

  uploaded = Dir.entries(cookbooks_dir).collect do |path|
    path = File.join(cookbooks_dir, path)
    next unless File.cookbook?(path)
    begin
      cookbook = Ridley::Chef::Cookbook.from_path(path)
      say "Uploading #{cookbook.cookbook_name} (#{cookbook.version})"
      ridley.cookbook.upload(path, freeze: true, force: options[:force])
      true
    rescue Ridley::Errors::FrozenCookbook
      true
    end
  end.compact

  say "Uploaded #{uploaded.length} cookbooks."
  say "Done."
ensure
  tempfile.close(true) if tempfile
  FileUtils.rm_rf(tmpdir) if tmpdir
end

#run_chef(environment) ⇒ Object 



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# File 'lib/berkflow/cli.rb', line 167

def run_chef(environment)
  env = find_environment!(environment)

  say "Discovering nodes in #{environment}..."
  nodes = find_nodes(environment)

  if nodes.empty?
    say "No nodes in #{environment}. Done."
    exit(0)
  end

  say "Running Chef Client on #{nodes.length} nodes..."
  success, failures, out = handle_results nodes.map { |node| ridley.node.chef_run(node.public_hostname) }

  unless success.empty?
    say "Successfully ran Chef Client on #{success.length} nodes"
  end

  unless failures.empty?
    error "Failed to run Chef Client on #{failures.length} nodes"
  end

  say "Done. See #{out} for logs."
  failures.empty? ? exit(0) : exit(1)
end

#upgrade(environment, application, version = LATEST) ⇒ Object 



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# File 'lib/berkflow/cli.rb', line 203

def upgrade(environment, application, version = LATEST)
  version  = sanitize_version(version)
  env      = find_environment!(environment)
  cookbook = find_cookbook!(application, version)

  unless options[:force]
    if locked = env.cookbook_versions[application]
      if Semverse::Constraint.new(locked).version.to_s == cookbook.version
        say "Environment already at #{cookbook.version}."
        say "Done."
        exit(0)
      end
    end
  end

  file = Tempfile.new("berkflow")
  unless contents = cookbook.download_file(:root_file, Berkshelf::Lockfile::DEFAULT_FILENAME, file.path)
    error "#{application} (#{version}) did not contain a Berksfile.lock"
    exit(1)
  end

  say "Upgrading #{environment} to #{cookbook.version}"
  say "Applying cookbook locks to #{environment}..."
  lockfile = Berkshelf::Lockfile.from_file(file.path)
  unless lockfile.apply(environment)
    error "Failed to apply Berksfile.lock to #{environment}."
    exit(1)
  end

  run_chef(environment)
ensure
  file.close(true) if file
end

#version ⇒ Object 



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# File 'lib/berkflow/cli.rb', line 238

def version
  say Berkflow::VERSION
end