Class: Management::Server::Run

Inherits:
Command
  • Object
show all
Includes:
Helper
Defined in:
lib/management/commands/server/run.rb

Instance Method Summary collapse

Methods included from Helper

#cloud, #config, #get_address, #get_env, #get_script, #get_server, #get_type, #live_servers, #system_verbose

Methods inherited from Command

all, #arg_list, #call_with, #command_name, #fn, #help_string, inherited, maxlen, #true_arity

Instance Method Details

#copy_file(server, local_path, remote_path, opts = nil) ⇒ Object 



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# File 'lib/management/commands/server/run.rb', line 48

def copy_file(server, local_path, remote_path, opts = nil)
  should_template = opts && opts[:template]
  custom_chown = opts && opts[:chown]
  custom_chmod = opts && opts[:chmod]

  Dir.mktmpdir('management-file-dir') do |file_tmpdir|

    # copy to the fake "remote" path locally
    remote_looking_path = File.join(file_tmpdir, remote_path)
    FileUtils.mkdir_p File.dirname(remote_looking_path)
    FileUtils.cp_r local_path, remote_looking_path, preserve: true

    # overwrite the fake "remote" file with its own templated contents if necessary
    if should_template
      new_contents = ERB.new(File.read(remote_looking_path)).result(binding)
      File.write(remote_looking_path, new_contents)
    end

    Dir.mktmpdir('management-tar-dir') do |tar_tmpdir|

      # zip this file up, starting from its absolute path
      local_tar_path = File.join(tar_tmpdir, "__management__.tar.gz")
      zip_relevant_files(file_tmpdir, local_tar_path)

      # copy tar file to remote and extract
      remote_tar_path = "/tmp/__management__.tar.gz"
      server.copy_file(local_tar_path, remote_tar_path)
      server.extract_tar(remote_tar_path)
      server.chown_r(remote_path, custom_chown) if custom_chown
      server.chmod(remote_path, custom_chmod) if custom_chmod
    end
  end
end

#missing_local_files(script) ⇒ Object 



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# File 'lib/management/commands/server/run.rb', line 88

def missing_local_files(script)
  script.find_all do |tuple|
    type, data = *tuple.first
    if type == :copy
      local, remote = *data
      ! File.exists?(local)
    end
  end.map do |tuple|
    type, data = *tuple.first
    local, remote = *data
    local
  end
end

#relevant_files(at_dir) ⇒ Object 



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# File 'lib/management/commands/server/run.rb', line 102

def relevant_files(at_dir)
  abort unless at_dir.start_with? "/"

  Dir[File.join(at_dir, "**/*")].select do |path|
    File.file?(path) || (File.directory?(path) && Dir.entries(path) == [".", ".."])
  end.map do |path|
    path.slice! at_dir.end_with?("/") ? at_dir : "#{at_dir}/"
    "./#{path}"
  end
end

#run(server_name, script_name) ⇒ Object 



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# File 'lib/management/commands/server/run.rb', line 11

def run(server_name, script_name)
  require 'tmpdir'
  require 'fileutils'
  require 'erb'
  require 'shellwords'

  server = get_server(server_name)
  script = get_script(script_name)

  server.private_key_path = config[:ssh_key_path]

  missing = missing_local_files(script)
  abort "The following files are missing:" + (["\n"] + missing).join("\n - ") if !missing.empty?

  script.each do |tuple|
    type, data = *tuple.first

    case type.to_sym
    when :copy
      local_path, remote_path, opts = *data
      puts "############ Copying #{local_path} -> #{remote_path}"

      copy_file(server, local_path, remote_path, opts)
    when :run
      cmd = data
      puts "############ Running #{cmd}"

      code = run_remote_command(server, cmd)
      if code != 0
        abort "############ Failed. Exit code: #{code}"
      end
    end
  end

  puts "############ Success!"
end

#run_remote_command(server, cmd) ⇒ Object

returns error code



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# File 'lib/management/commands/server/run.rb', line 83

def run_remote_command(server, cmd)
  result = server.ssh("#{cmd}").first
  return result.status
end